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1. Management of lower limb ischaemia using hybrid techniques: a single-centre experience

Author

MS Chana, S Leckey, SCV Paravastu, and SR Kulkarni

Abstract

Introduction: Modern vascular surgery combines procedures with both open and endovascular techniques, with these hybrid procedures becoming part of routine arterial surgery. Hybrid procedures have been established in this centre with access to a hybrid suite since 2014. The aim of this study was to characterise patients undergoing hybrid procedures including an open groin dissection plus an endovascular component. Methods: A retrospective review of operation notes, electronic health records and radiology software for patients undergoing hybrid revascularisation for critical limb threatening ischaemia (CLTI) or intermittent claudication (IC) between January 2017 and December 2021 was performed. Any open groin surgical procedure including common femoral endarterectomy and/or lower limb bypass plus any endovascular procedure were recorded. Primary outcomes were recorded as stent patency, a composite of tissue healing or symptom resolution, and wound complications including surgical site infections. Secondary outcomes were length of stay, rate of readmission and mortality at 30 days. Results: A total of 98 patients (77 men) of median age 73 years (IQR 68–78) underwent a hybrid procedure during this period. Treatment was for CLTI in 66% of the patients and for IC in 34%. The median length of stay was 5 days. Overall graft and stent patency was 85%. The overall rate of tissue healing and symptom resolution was 92%. The surgical site infection rate was 14% (14/98) and mortality at 30 days was 2%. Conclusion: Hybrid revascularisation is safe and effective in treating CLTI and IC with an acceptable risk of surgical site infections. Our short-term results suggest that hybrid revascularisation should be considered in patients with multilevel disease.

Published
2023

2. PHENIX Collaboration

Author

A. Adare, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, R. Akimoto, H. Al-Bataineh, J. Alexander, M. Alfred, A. Al-Jamel, H. Al-Ta'ani, K.R. Andrews, V. Andrieux, A. Angerami, K. Aoki, N. Apadula, L. Aphecetche, E. Appelt, Y. Aramaki, R. Armendariz, S.H. Aronson, J. Asai, H. Asano, E.C. Aschenauer, E.T. Atomssa, R. Averbeck, T.C. Awes, C. Ayuso, B. Azmoun, V. Babintsev, A. Bagoly, M. Bai, X. Bai, G. Baksay, L. Baksay, A. Baldisseri, N.S. Bandara, B. Bannier, K.N. Barish, P.D. Barnes, B. Bassalleck, A.T. Basye, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, C. Baumann, S. Baumgart, A. Bazilevsky, M. Beaumier, S. Beckman, S. Belikov, R. Belmont, J. Ben-Benjamin, R. Bennett, A. Berdnikov, Y. Berdnikov, J.H. Bhom, A.A. Bickley, M.T. Bjorndal, D. Black, D.S. Blau, M. Boer, J.G. Boissevain, J.S. Bok, H. Borel, K. Boyle, M.L. Brooks, D.S. Brown, D. Broxmeyer, J. Bryslawskyj, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J.M. Burward-Hoy, C. Butler, S. Butsyk, C.M. Camacho, S. Campbell, V. Canoa Roman, A. Caringi, P. Castera, R. Cervantes, J.-S. Chai, B.S. Chang, W.C. Chang, J.-L. Charvet, C.-H. Chen, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J.B. Choi, S. Choi, R.K. Choudhury, P. Christiansen, T. Chujo, P. Chung, A. Churyn, O. Chvala, V. Cianciolo, Z. Citron, C.R. Cleven, Y. Cobigo, B.A. Cole, M.P. Comets, Z. Conesa del Valle, M. Connors, P. Constantin, N. Cronin, N. Crossette, M. Csanád, T. Csörgő, T. Dahms, S. Dairaku, I. Danchev, T.W. Danley, K. Das, A. Datta, M.S. Daugherity, G. David, M.K. Dayananda, M.B. Deaton, K. DeBlasio, K. Dehmelt, H. Delagrange, A. Denisov, D. d'Enterria, A. Deshpande, E.J. Desmond, K.V. Dharmawardane, O. Dietzsch, L. Ding, A. Dion, P.B. Diss, D. Dixit, J.H. Do, M. Donadelli, L. D'Orazio, J.L. Drachenberg, O. Drapier, A. Drees, K.A. Drees, A.K. Dubey, M. Dumancic, J.M. Durham, A. Durum, D. Dutta, V. Dzhordzhadze, S. Edwards, Y.V. Efremenko, J. Egdemir, T. Elder, F. Ellinghaus, W.S. Emam, T. Engelmore, A. Enokizono, H. En'yo, B. Espagnon, S. Esumi, K.O. Eyser, B. Fadem, W. Fan, N. Feege, D.E. Fields, M. Finger, F. Fleuret, S.L. Fokin, B. Forestier, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, K. Fujiwara, Y. Fukao, Y. Fukuda, S.-Y. Fung, T. Fusayasu, S. Gadrat, K. Gainey, C. Gal, P. Gallus, P. Garg, A. Garishvili, I. Garishvili, F. Gastineau, H. Ge, M. Germain, F. Giordano, A. Glenn, H. Gong, X. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, G. Grim, M. Grosse Perdekamp, Y. Gu, T. Gunji, L. Guo, H. Guragain, H.-Å. Gustafsson, T. Hachiya, A. Hadj Henni, C. Haegemann, J.S. Haggerty, M.N. Hagiwara, K.I. Hahn, H. Hamagaki, J. Hamblen, H.F. Hamilton, R. Han, S.Y. Han, J. Hanks, H. Harada, C. Harper, E.P. Hartouni, K. Haruna, M. Harvey, S. Hasegawa, T.O.S. Haseler, K. Hashimoto, E. Haslum, K. Hasuko, R. Hayano, S. Hayashi, X. He, M. Heffner, T.K. Hemmick, T. Hester, J.M. Heuser, H. Hiejima, J.C. Hill, K. Hill, R. Hobbs, M. Hohlmann, R.S. Hollis, M. Holmes, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, Y. Hori, D. Hornback, T. Hoshino, N. Hotvedt, J. Huang, S. Huang, M.G. Hur, T. Ichihara, R. Ichimiya, J. Ide, H. Iinuma, Y. Ikeda, K. Imai, Y. Imazu, J. Imrek, M. Inaba, Y. Inoue, A. Iordanova, D. Isenhower, L. Isenhower, M. Ishihara, A. Isinhue, T. Isobe, M. Issah, A. Isupov, Y. Ito, D. Ivanishchev, Y. Iwanaga, B.V. Jacak, M. Javani, S.J. Jeon, M. Jezghani, Z. Ji, J. Jia, X. Jiang, J. Jin, O. Jinnouchi, D. John, B.M. Johnson, T. Jones, E. Joo, K.S. Joo, V. Jorjadze, D. Jouan, D.S. Jumper, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, S. Kanda, M. Kaneta, S. Kaneti, B.H. Kang, J.H. Kang, J.S. Kang, H. Kanou, D. Kapukchyan, J. Kapustinsky, K. Karatsu, S. Karthas, M. Kasai, T. Kawagishi, D. Kawall, M. Kawashima, A.V. Kazantsev, S. Kelly, T. Kempel, J.A. Key, V. Khachatryan, P.K. Khandai, A. Khanzadeev, K. Kihara, K.M. Kijima, J. Kikuchi, A. Kim, B.I. Kim, C. Kim, D.H. Kim, D.J. Kim, E. Kim, E.-J. Kim, G.W. Kim, H.-J. Kim, H.J. Kim, K.-B. Kim, M. Kim, M.H. Kim, S.H. Kim, Y.-J. Kim, Y.K. Kim, Y.-S. Kim, B. Kimelman, D. Kincses, E. Kinney, K. Kiriluk, Á. Kiss, E. Kistenev, R. Kitamura, A. Kiyomichi, J. Klatsky, J. Klay, C. Klein-Boesing, D. Kleinjan, P. Kline, T. Koblesky, L. Kochenda, V. Kochetkov, M. Kofarago, Y. Komatsu, B. Komkov, M. Konno, J. Koster, D. Kotchetkov, D. Kotov, A. Kozlov, A. Král, A. Kravitz, F. Krizek, P.J. Kroon, J. Kubart, S. Kudo, G.J. Kunde, N. Kurihara, K. Kurita, M. Kurosawa, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, Y.S. Lai, J.G. Lajoie, E.O. Lallow, D. Layton, A. Lebedev, Y. Le Bornec, S. Leckey, B. Lee, D.M. Lee, G.H. Lee, J. Lee, K. Lee, K.B. Lee, K.S. Lee, M.K. Lee, S. Lee, S.H. Lee, S.R. Lee, T. Lee, M.J. Leitch, M.A.L. Leite, M. Leitgab, E. Leitner, B. Lenzi, Y.H. Leung, B. Lewis, N.A. Lewis, X. Li, X.H. Li, P. Lichtenwalner, P. Liebing, H. Lim, S.H. Lim, L.A. Linden Levy, T. Liška, A. Litvinenko, H. Liu, L.D. Liu, M.X. Liu, V.-R. Loggins, S. Lokos, K. Lovasz, B. Love, R. Luechtenborg, D. Lynch, C.F. Maguire, T. Majoros, Y.I. Makdisi, M. Makek, M. Malaev, A. Malakhov, M.D. Malik, A. Manion, V.I. Manko, E. Mannel, Y. Mao, L. Mašek, H. Masuda, H. Masui, S. Masumoto, F. Matathias, M.C. McCain, M. McCumber, P.L. McGaughey, D. McGlinchey, C. McKinney, N. Means, A. Meles, M. Mendoza, B. Meredith, W.J. Metzger, Y. Miake, T. Mibe, J. Midori, A.C. Mignerey, D.E. Mihalik, P. Mikeš, K. Miki, A.J. Miller, T.E. Miller, A. Milov, S. Mioduszewski, D.K. Mishra, G.C. Mishra, M. Mishra, J.T. Mitchell, M. Mitrovski, G. Mitsuka, Y. Miyachi, S. Miyasaka, S. Mizuno, A.K. Mohanty, S. Mohapatra, P. Montuenga, H.J. Moon, T. Moon, Y. Morino, A. Morreale, D.P. Morrison, S.I.M. Morrow, M. Moskowitz, J.M. Moss, S. Motschwiller, T.V. Moukhanova, D. Mukhopadhyay, T. Murakami, J. Murata, A. Mwai, T. Nagae, K. Nagai, S. Nagamiya, K. Nagashima, T. Nagashima, Y. Nagata, J.L. Nagle, M. Naglis, M.I. Nagy, I. Nakagawa, H. Nakagomi, Y. Nakamiya, K.R. Nakamura, T. Nakamura, K. Nakano, S. Nam, C. Nattrass, A. Nederlof, P.K. Netrakanti, J. Newby, M. Nguyen, M. Nihashi, T. Niida, S. Nishimura, B.E. Norman, R. Nouicer, T. Novák, N. Novitzky, R. Novotny, A. Nukariya, A.S. Nyanin, J. Nystrand, C. Oakley, H. Obayashi, E. O'Brien, S.X. Oda, C.A. Ogilvie, H. Ohnishi, H. Oide, I.D. Ojha, M. Oka, K. Okada, O.O. Omiwade, Y. Onuki, J.D. Orjuela Koop, J.D. Osborn, A. Oskarsson, I. Otterlund, G.J. Ottino, M. Ouchida, K. Ozawa, R. Pak, D. Pal, A.P.T. Palounek, V. Pantuev, V. Papavassiliou, B.H. Park, I.H. Park, J. Park, J.S. Park, S. Park, S.K. Park, W.J. Park, S.F. Pate, L. Patel, M. Patel, H. Pei, J.-C. Peng, W. Peng, H. Pereira, D.V. Perepelitsa, G.D.N. Perera, V. Peresedov, D.Yu. Peressounko, C.E. PerezLara, J. Perry, R. Petti, M. Phipps, C. Pinkenburg, R. Pinson, R.P. Pisani, M. Proissl, A. Pun, M.L. Purschke, A.K. Purwar, H. Qu, P.V. Radzevich, J. Rak, A. Rakotozafindrabe, B.J. Ramson, I. Ravinovich, K.F. Read, S. Rembeczki, M. Reuter, K. Reygers, D. Reynolds, V. Riabov, Y. Riabov, E. Richardson, D. Richford, T. Rinn, N. Riveli, D. Roach, G. Roche, S.D. Rolnick, A. Romana, M. Rosati, C.A. Rosen, S.S.E. Rosendahl, P. Rosnet, Z. Rowan, J.G. Rubin, P. Rukoyatkin, J. Runchey, P. Ružička, V.L. Rykov, M.S. Ryu, S.S. Ryu, A.S. Safonov, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, K. Sakashita, H. Sakata, H. Sako, V. Samsonov, M. Sano, S. Sano, M. Sarsour, H.D. Sato, K. Sato, S. Sato, T. Sato, M. Savastio, S. Sawada, B. Schaefer, B.K. Schmoll, K. Sedgwick, J. Seele, R. Seidl, Y. Sekiguchi, A.Yu. Semenov, V. Semenov, A. Sen, R. Seto, P. Sett, A. Sexton, D. Sharma, A. Shaver, T.K. Shea, I. Shein, A. Shevel, T.-A. Shibata, K. Shigaki, H.H. Shim, M. Shimomura, T. Shioya, T. Shohjoh, K. Shoji, P. Shukla, A. Sickles, C.L. Silva, D. Silvermyr, C. Silvestre, K.S. Sim, B.K. Singh, C.P. Singh, V. Singh, M.J. Skoby, M. Skolnik, S. Skutnik, M. Slunečka, K.L. Smith, W.C. Smith, M. Snowball, T. Sodre, S. Solano, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, N.A. Sparks, F. Staley, P.W. Stankus, P. Steinberg, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, M.R. Stone, T. Sugitate, C. Suire, A. Sukhanov, J.P. Sullivan, T. Sumita, J. Sun, S. Syed, J. Sziklai, T. Tabaru, S. Takagi, E.M. Takagui, A. Takahara, A. Takeda, A. Taketani, R. Tanabe, K.H. Tanaka, Y. Tanaka, S. Taneja, K. Tanida, M.J. Tannenbaum, S. Tarafdar, A. Taranenko, P. Tarján, G. Tarnai, E. Tennant, H. Themann, D. Thomas, T.L. Thomas, R. Tieulent, A. Timilsina, T. Todoroki, M. Togawa, A. Toia, J. Tojo, L. Tomášek, M. Tomášek, Y. Tomita, H. Torii, C.L. Towell, M. Towell, R. Towell, R.S. Towell, V.-N. Tram, I. Tserruya, Y. Tsuchimoto, T. Tsuji, S.K. Tuli, H. Tydesjö, N. Tyurin, Y. Ueda, B. Ujvari, K. Utsunomiya, C. Vale, H. Valle, H.W. van Hecke, M. Vargyas, S. Vazquez-Carson, E. Vazquez-Zambrano, A. Veicht, J. Velkovska, R. Vértesi, A.A. Vinogradov, M. Virius, B. Voas, A. Vossen, V. Vrba, N. Vukman, E. Vznuzdaev, M. Wagner, D. Walker, X.R. Wang, Z. Wang, D. Watanabe, K. Watanabe, Y. Watanabe, Y.S. Watanabe, F. Wei, R. Wei, J. Wessels, S. Whitaker, A.S. White, S.N. White, N. Willis, D. Winter, S. Wolin, C.P. Wong, J.P. Wood, C.L. Woody, R.M. Wright, M. Wysocki, B. Xia, W. Xie, C. Xu, Q. Xu, L. Xue, S. Yalcin, Y.L. Yamaguchi, H. Yamamoto, K. Yamaura, R. Yang, A. Yanovich, Z. Yasin, P. Yin, J. Ying, S. Yokkaichi, J.H. Yoo, J.S. Yoo, I. Yoon, Z. You, G.R. Young, I. Younus, H. Yu, I.E. Yushmanov, W.A. Zajc, O. Zaudtke, A. Zelenski, C. Zhang, S. Zharko, S. Zhou, J. Zimamyi, L. Zolin, and L. Zou

Subjects
Nuclear and High Energy Physics
Published
2019

3. Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions

Author

A. Sen, V. S. Pantuev, M. Sano, M. Stepanov, Emily D. Richardson, X. He, J. Zimamyi, O. O. Omiwade, M. Harvey, S. Belikov, K. S. Joo, A. Rakotozafindrabe, J. Hamblen, K. Hasuko, Y. Aramaki, V. Peresedov, Y. Watanabe, Ajit Kumar Mohanty, T. A. Shibata, C. L. Silva, R. A. Soltz, T. Sato, C. M. Camacho, R. S. Towell, Prashant Shukla, S. F. Pate, Dmitry Blau, Y. Fukao, A. Shevel, O. Jinnouchi, H. En'yo, J. Koster, M. Grosse Perdekamp, A. Hadj Henni, T. Hester, I. Younus, Ke. Nakamura, O. Drapier, H. Al-Bataineh, E. Vazquez-Zambrano, A. Nederlof, J. Park, H. Masui, A. K. Dubey, F. Matathias, H. Asano, Florian Bauer, M. Kasai, Y. Iwanaga, Joakim Nystrand, A. Vossen, T. L. Thomas, I. E. Yushmanov, Eun-Hee Kim, P. Constantin, Beomkyu Kim, Wei Xie, M. J. Leitch, A. A. Bickley, C. L. Woody, A. Veicht, A. Mwai, Eva Haslum, B. Lenzi, A. Soldatov, D. Isenhower, A. Toia, Tamas Novak, T. Moon, Kensuke Homma, H. Pei, L. Guo, Alexei Khanzadeev, Shinichi Masumoto, E. Stenlund, J. B. Choi, H. Sakata, Min-Hye Kim, R. Vértesi, S. H. Lee, Dipak Kumar Mishra, C. Baumann, M. S. Daugherity, C. P. Singh, T. Jones, Z. Rowan, Tomoya Tsuji, J. H. Bhom, T. V. Moukhanova, M. Mendoza, Peter Christiansen, R. Ichimiya, Atsushi Takahara, L. Mašek, D. Kawall, K. Tanida, Ryugo S. Hayano, I. J. Choi, B. Xia, S. Motschwiller, D. Ivanishchev, Dennis Perepelitsa, H. Themann, S. Chernichenko, V. Papavassiliou, Z. Ji, D. Winter, D. Yu Peressounko, Y. Riabov, Y. Onuki, C. E. Perezlara, Filip Krizek, N. A. Lewis, K. A. Drees, H. Lim, B. Bassalleck, S. Takagi, J. Bryslawskyj, Kenta Shigaki, M. Boer, M. Nguyen, V. I. Kochetkov, L. Aphecetche, S. Park, J. Murata, I. Nakagawa, Aaron Angerami, V-N. Tram, N. Grau, R. J. Petti, Sándor Lökös, K. N. Barish, J. M. Burward-Hoy, P. Tarján, S. N. White, J. G. Lajoie, Deepa Thomas, Jan Rak, R. Lacey, A. V. Kazantsev, Alexander Milov, Tae-Yeon Lee, Martin Purschke, C. A. Aidala, H. J. Kim, R. Granier de Cassagnac, A. Isupov, C. Suire, A. S. Nyanin, S. Zharko, S. Sano, S. Butsyk, Vladimir Samsonov, M. Konno, Gerd Joachim Kunde, A. Dion, Johannes Peter Wessels, I. Ravinovich, J. L. Charvet, S. Afanasiev, A. Ster, N. Feege, I. Otterlund, Christine Nattrass, A. Adare, J. Klatsky, C. P. Wong, M. Connors, W. A. Zajc, V. Baublis, A. Denisov, M. Leitgab, J. Sziklai, I. Shein, V. Cianciolo, Zvi Hirsh Citron, H. Ge, Rachid Nouicer, A. N. Zelenski, M. Proissl, Young-Ki Kim, T. Engelmore, Y. Tomita, Motoi Inaba, K. Nakano, M. J. Skoby, J. Newby, G. Roche, M. Mitrovski, Takafumi Niida, J. Huang, Hiroaki Ohnishi, K. B. Lee, Brian Cole, L. Tomášek, R. M. Wright, T. E. Miller, M. Kurosawa, Sergey Fokin, Z. Sun, A. Yu. Semenov, Bum-Hoon Lee, D. E. Mihalik, Senta Greene, K. Sedgwick, M. L. Brooks, S. Yokkaichi, W. C. Smith, B. M. Johnson, Alberto Baldisseri, Mihael Makek, K. Das, J. T. Mitchell, P. Mikeš, N. Hotvedt, R. Seidl, M. K. Dayananda, Prakhar Garg, B. Bannier, R. Belmont, M. Sarsour, A. T. Basye, M. K. Lee, B. Love, Marie Germain, C. Xu, E. P. Hartouni, Y. Miyachi, K. B. Kim, W. E. Sondheim, K. Boyle, P. A. Rukoyatkin, K. S. Sim, Kei Nagashima, V. Canoa Roman, P. Chung, M. I. Nagy, A. Morreale, Z. Fraenkel, Y. Nagata, M. Bai, D. Watanabe, M. D. Malik, Vladislav Manko, Saskia Mioduszewski, H. A. Gustafsson, M. Slunečka, E. Vznuzdaev, E. C. Aschenauer, S. S. Ryu, J. S. Kang, Junji Tojo, J. Gosset, Mate Csanad, A. Berdnikov, C. Zhang, J. P. Sullivan, A. Iordanova, A. Caringi, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, B. H. Kang, M. Naglis, Tomofumi Nagae, J. L. Nagle, S. Y. Fung, M. B. Deaton, Y. Tanaka, T. K. Shea, P. Rosnet, B. Meredith, V. Khachatryan, D. Hornback, B. Komkov, P. Castera, J. Imrek, V. E. Semenov, B. E. Norman, M. Holmes, P. Ružička, Raphael Noel Tieulent, W. S. Emam, A. Datta, M. Javani, B. Fadem, E. O'Brien, Y. Kwon, A. G. Litvinenko, A. Kozlov, R. Seto, A. Bagoly, Maya Hachiya Shimomura, R. S. Hollis, G. David, L. Patel, T. C. Awes, Kyoichiro Ozawa, T. Liška, K. O. Eyser, K. Fujiwara, Y. L. Yamaguchi, N. Kamihara, R. K. Choudhury, T. Murakami, Robert F. Hobbs, B. Lewis, Viktor Riabov, Jun Kikuchi, Tadaaki Isobe, B. Azmoun, Y. J. Mao, K. Haruna, T. W. Danley, J. D. Osborn, A. Taranenko, R. Yang, H. Hiejima, S. Taneja, Kazushi Miki, H. Al-Ta'Ani, A. Král, M. J. Kweon, H. Kanou, J. S. Chai, Petr Gallus, T. Majoros, L. Ding, D. Roach, K. M. Kijima, Taku Gunji, H. Gong, M. Nihashi, Tatsuya Chujo, D. Richford, Zhiying You, K. Imai, Shoji Nagamiya, John Hill, K. Hashimoto, T. Horaguchi, Brajesh K. Singh, C. Silvestre, R. Bennett, M. Kawashima, J. Seele, Yoshifumi Ueda, H. J. Moon, Norio Saito, Tsutomu Mibe, P. Liebing, M. A. L. Leite, D. Sharma, C. Vale, P. L. McGaughey, K. Karatsu, M. Patel, F. Kajihara, F. Staley, L. Baksay, V. Dzhordzhadze, I. Danchev, A. Garishvili, David D'Enterria, Gary Grim, J. H. Do, T. Tabaru, S. Batsouli, B. Kurgyis, Toru Sugitate, L. D. Isenhower, K. V. Dharmawardane, Susumu Sato, Y. I. Makdisi, M. Kaneta, Xingguo Li, B. S. Chang, Y. Le Bornec, Ahmed Al-Jamel, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Charles Maguire, J. L. Drachenberg, S. Leckey, M. Finger, S. Tarafdar, G. Mitsuka, Y. Hori, Anne Marie Sickles, J. Jin, J. E. Frantz, Jen-Chieh Peng, K. Gainey, I. V. Sourikova, N. Novitzky, Jongmin Lee, S. Choi, J. Klay, S. I. Morrow, H. Delagrange, Y. S. Kim, Y. H. Leung, Josh Moss, E. M. Takagui, S. P. Sorensen, Dylan Walker, R. P. Pisani, Debashish Pal, Y. Nakamiya, D. Lynch, S. Sawada, J. S. Bok, D. Kotchetkov, D. Reynolds, François Fleuret, H. W. Van Hecke, Y. Tsuchimoto, T. Ichihara, M. Oka, O. Chvala, H. Iinuma, M. C. McCain, S. Hasegawa, R. Tanabe, D. Layton, I. Garishvili, Akio Kiyomichi, J. Ying, Seong H. Kim, F. Wei, Inkyu Park, M. McCumber, J. Runchey, E. Kistenev, Xiong Wang, Z. Conesa del Valle, S. Zhou, Matthew G. Reuter, Herve Borel, B. Ujvari, Nikolay Tyurin, M. N. Wagner, Susanta K. Mohapatra, J. S. Kapustinsky, Takahiro Fusayasu, G. R. Young, M. Alfred, T. Hachiya, G. Baksay, Dong Jo Kim, A. P.T. Palounek, K. Okada, P. Lichtenwalner, A. Kiss, P. Kline, K. S. Lee, S. D. Rolnick, A. Enokizono, B. Espagnon, L. Zou, H. Harada, I. D. Ojha, Alexander Malakhov, Qiao Xu, N. Kurihara, ShinIchi Esumi, A. Glenn, A. Kravitz, J. M. Heuser, W. C. Chang, Z. Yasin, Henner Buesching, J. Sun, B. Forestier, M. T. Bjorndal, D. Silvermyr, S. Baumgart, L. S. Zolin, M. Ouchida, V. Babintsev, W. J. Park, Steve Edwards, M. Tomášek, N. Means, J. Asai, Atsushi Taketani, M. Wysocki, I. Tserruya, Masamichi Ishihara, A. Sukhanov, K. Kurita, Rushan Han, M. N. Hagiwara, Christopher Rosen, S. H. Lim, H. Pereira, P. D. Barnes, H. Yu, X. Gong, Y. Morino, Yu. Efremenko, A. Yanovich, V. Singh, V. L. Rykov, T. Dahms, A. Hodges, Marcus Hohlmann, G. S. Kyle, C. O. Kim, R. Pak, N. Willis, C. Y. Chi, M. J. Tannenbaum, James Alexander, Y. Ikeda, Shingo Sakai, S. P. Stoll, L. A. Linden Levy, J. G. Boissevain, Yasutada Akiba, H. Torii, P. V. Radzevich, Hirohiko Sato, S. K. Tuli, Minghui Liu, S. Bathe, Eunja Kim, E. J. Mannel, Agneta Oskarsson, S. Dairaku, D. Kincses, T. Rinn, Y. Berdnikov, R. Averbeck, Byung-Sik Hong, C. McKinney, M. Mishra, Kazuhiro Tanaka, Vaclav Vrba, Klaus Johannes Reygers, K. Hill, O. Zaudtke, Rui Wei, R. Akimoto, B. Sahlmueller, E. J. Desmond, A. Bazilevsky, Y. J. Kim, B. K. Schmoll, M. Virius, E. T. Atomssa, M. Heffner, A. Kim, Jaehyeok Yoo, D. Mukhopadhyay, E. Tennant, S. Rembeczki, M. Gonin, C. Pinkenburg, K. Dehmelt, J. D. Orjuela Koop, S. Kametani, C. H. Chen, Kenneth Francis Read, A. Manion, Y. Cobigo, Alexandre Lebedev, J. H. Kang, D. M. Lee, D. Bucher, J. S. Haggerty, S. R. Lee, A. Romana, S. Gadrat, Y. S. Lai, K. Kiriluk, J. Chiba, Alice Mignerey, X. Jiang, L. D'Orazio, S. Miyasaka, A. Franz, G. C. Mishra, Xiao-yan Li, Hiroyuki Sako, Y. Komatsu, Takao Sakaguchi, S. W. Nam, C. Klein-Boesing, A. D. Frawley, S. Huang, S. H. Aronson, W. Holzmann, O. Dietzsch, H. Valle, M. Chiu, Dipanwita Dutta, C. A. Ogilvie, Sung Keun Park, C. Gal, Julia Velkovska, S. Kelly, M. Rosati, N. N. Ajitanand, T. K. Hemmick, J. M. Durham, Yasuo Miake, Tamás Csörgő, Takahiro Nakamura, D. McGlinchey, Susumu Oda, A. A. Vinogradov, Henrik Tydesjö, L. Kochenda, M. Issah, T. Shohjoh, A. Durum, T. Kawagishi, Jiangyong Jia, D. S. Brown, K. Yamaura, S. Wolin, D. Kleinjan, S. Campbell, Hongfang Liu, D. E. Fields, B. V. Jacak, A. K. Purwar, R. Armendariz, J. Hanks, Byoungchoo Park, N. Apadula, C. Oakley, A. Drees, J. Kubart, K. Sakashita, D. Kotov, J. Egdemir, D. S. Jumper, F. Gastineau, Jason Kamin, Y. Goto, S. S.E. Rosendahl, K. Watanabe, G. Bunce, K. Shoji, A. Churyn, D. Jouan, W. Peng, P. W. Stankus, C. R. Cleven, C. Haegemann, Y. Inoue, P. J. Kroon, T. Kempel, Dong-Hun Kim, S. Kaneti, M. G. Hur, Steven E. Skutnik, M. Togawa, T. O. S. Haseler, H. Qu, Hideki Hamagaki, W. Fan, K. Aoki, M. Vargyas, T. Todoroki, K. I. Hahn, A. Deshpande, Helsinki Institute of Physics, Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PHENIX, Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique subatomique et des technologies associées ( SUBATECH ), IMT Atlantique Bretagne-Pays de la Loire ( IMT Atlantique ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Nantes ( UN ), Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Institut de Physique Nucléaire d'Orsay ( IPNO ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de Physique Nucléaire de Lyon ( IPNL ), Université Claude Bernard Lyon 1 ( UCBL ), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Photon, heavy ion: scattering, 62.4 GeV-cms, Au+Au collisions, General Physics and Astronomy, transverse momentum dependence, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 39 GeV-cms/nucleon62.4 GeV-cms, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment, 39 GeV-cms/nucleon, Physics, Range (particle radiation), RHIC, Large Hadron Collider, Multiplicative function, PHENIX, nucleus nucleus: colliding beams, PRIRODNE ZNANOSTI. Fizika, photon: direct production, CERN LHC Coll, photon: yield, COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS, quark-gluon plasma, beam energy scan, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 114 Physical sciences, energy dependence, Nuclear physics, direct photons, energy: scaling, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], DILEPTONS, Au+Au collisions, beam energy scan, quark-gluon plasma, direct photons, PHENIX, RHIC, 0103 physical sciences, 010306 general physics, impact parameter: dependence, Scaling, Nuclear Physics, gold, NATURAL SCIENCES. Physics, Yield (chemistry), High Energy Physics::Experiment, Relativistic Heavy Ion Collider, Beam (structure), experimental results
Abstract

The PHENIX collaboration presents first measurements of low-momentum ($0.4$1\,GeV/$c$) direct-photon yield $dN_{\gamma}^{\rm dir}/d\eta$ is a smooth function of $dN_{\rm ch}/d\eta$ and can be well described as proportional to $(dN_{\rm ch}/d\eta)^\alpha$ with $\alpha{\approx}1.25$. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different, $A$$+$$A$ collision systems. At a given beam energy the scaling also holds for high $p_T$ ($>5$\,GeV/$c$) but when results from different collision energies are compared, an additional $\sqrt{s_{_{NN}}}$-dependent multiplicative factor is needed to describe the integrated-direct-photon yield., Comment: 673 authors from 82 institutions, 10 pages, 4 figures. v2 is version accepted for publication in Physical Review Letters. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

Published
2019

4. Transverse energy production and charged-particle multiplicity at midrapidity in various systems fromsNN=7.7to 200 GeV

Author

I. Garishvili, Akio Kiyomichi, F. Wei, N. Kurihara, Animesh Datta, T. Sumita, M. G. Hur, M. Kurosawa, J. H. Yoo, B. Lewis, J. M. Burward-Hoy, C. Baumann, S. Kametani, C. P. Singh, S. Hayashi, D. Pal, J. Jin, B. M. Johnson, Filip Krizek, K. Dehmelt, A. Isupov, J. Sziklai, Brian Cole, Mate Csanad, Jen-Chieh Peng, B. Voas, K. O. Eyser, Y. Onuki, J. L. Charvet, P. Tarján, Y. J. Mao, A. Král, S. Takagi, H. Van Hecke, S. Bathe, A. Nukariya, D. Reynolds, Inkyu Park, Xiong Wang, Z. Conesa del Valle, Dong Jo Kim, Y. Ikeda, T. Murakami, E. M. Takagui, R. Lacey, Atsushi Takahara, I. Ravinovich, M. Nihashi, Kensuke Homma, E. Richardson, K. N. Barish, Shunji Nishimura, M. Gonin, M. Patel, X. Jiang, Ryugo S. Hayano, J. G. Boissevain, T. E. Miller, Tadaaki Isobe, R. Granier de Cassagnac, A. Adare, J. S. Chai, Robert F. Hobbs, Min-Hye Kim, Y. Le Bornec, Masashi Kaneta, Alberica Toia, C. Silvestre, S. Chernichenko, R. A. Soltz, David D'Enterria, N. Crossette, H. Lim, A. Veicht, Charles Maguire, A. Kiss, M. Naglis, Y. Nagata, B. Bassalleck, Yuhei Morino, Steven Kelly, K. A. Drees, J. Rak, Y. Riabov, S. Sano, Kei Nagashima, R. P. Pisani, M. Bai, H. Nakagomi, M. Skolnik, T. Hoshino, G. W. Kim, P. Chung, A. Denisov, Marisilvia Donadelli, Kenta Shigaki, M. Konno, Torsten Dahms, M. Slunečka, V. Bumazhnov, M. P. Comets, J. Klatsky, D. Black, E. C. Aschenauer, R. Akimoto, S. S. Ryu, Hari Guragain, J. Imrek, M. Holmes, C. L. Silva, D. H. Kim, S. Sawada, K. Hasuko, Z. Yasin, B. Azmoun, G. C. Mishra, J. Ying, A. Franz, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, P. L. McGaughey, M. Nguyen, Young-Ki Kim, Henner Buesching, Raphael Noel Tieulent, Nikolay Tyurin, T. Engelmore, N. Novitzky, Jihyun Bhom, J. B. Choi, W. S. Emam, Y. Nakamiya, D. Lynch, M. N. Wagner, M. Kawashima, Steve Edwards, S. Tarafdar, H. Pei, J. Chiba, Alice Mignerey, A. Sukhanov, K. Kurita, K. S. Sim, T. Tabaru, Y. Gu, H. Asano, R. S. Towell, Prashant Shukla, H. Kanou, Jong-Min Park, S. F. Pate, Y. Fukao, Y. J. Kwon, J. Alexander, Taku Gunji, H. Gong, M. I. Nagy, M. S. Daugherity, H. Pereira, F. Kajihara, A. S. Nyanin, G. Baksay, A. Shevel, A. Basye, Junji Tojo, C. Pinkenburg, O. Drapier, Frank Ellinghaus, Matthew Snowball, J. D. Osborn, Inseok Yoon, Zhiying You, S. Beckman, Eun Joo Kim, R. S. Hollis, Ferdinando Giordano, Ke. Nakamura, E. P. Hartouni, R. Bennett, H. Al-Bataineh, H. Delagrange, R. Tanabe, Y. Komatsu, B. Love, M. T. Bjorndal, T. Hester, L. D'Orazio, M. R. Stone, S. Miyasaka, R. Yang, J. A. Key, S. Butsyk, Rachid Nouicer, D. Watanabe, A. N. Zelenski, Hiromi Iinuma, H. Hiejima, D. S. Brown, Marcus Hohlmann, S. W. Nam, Ralf Peter Averbeck, S. Motschwiller, E. R. Kinney, Marie Germain, S. Zhou, Ahmed Al-Jamel, T. L.T. Thomas, M. Finger, W. C. Smith, J. M. Durham, H. A. Gustafsson, D. P. Morrison, J. E. Frantz, D. Ivanishchev, Jongmin Lee, S. D. Rolnick, Y. S. Kim, B. Komkov, M. D. Malik, X. Gong, Pawan Kumar Netrakanti, E. Vznuzdaev, V. Papavassiliou, Sébastien Gadrat, C.Y. Chi, Joakim Nystrand, J. H. Do, A. Iordanova, C. L. Towell, Susumu Sato, C. O. Kim, Senta Greene, J. T. Mitchell, K. Imai, Ajit Kumar Mohanty, S. Campbell, T. A. Shibata, M. Stepanov, G. Roche, T. Sato, Laurent Bernard Aphecetche, L. Zou, A. G. Litvinenko, P. Kline, K. S. Lee, Herve Borel, A. Dion, S. Taneja, Eva Haslum, B. H. Kang, J. Murata, V. E. Semenov, N. Hotvedt, R. Seidl, R. Pak, Aaron White, Norio Saito, Tsutomu Mibe, M. A. L. Leite, Hideyuki Oide, J. Huang, Bum-Hoon Lee, S. Solano, A. Isinhue, Vladislav Manko, S. Baumgart, A. Enokizono, D. Isenhower, Masamichi Ishihara, P. K. Khandai, M. K. Dayananda, Prakhar Garg, Margaret Harvey, A. Taketani, Priyanka Sett, K. Karatsu, Tamas Novak, T. Moon, L. Mašek, M. Wysocki, B. Bannier, V-N. Tram, N. Grau, M. K. Lee, Y. Hori, Anne Marie Sickles, H. Al-Ta'Ani, Tatsuya Chujo, I. Tserruya, J. Gosset, H. Themann, K. Gainey, Minghui Liu, Takao Sakaguchi, A. Sen, L. Guo, J. L. Klay, Alexei Khanzadeev, Barbara Jacak, D. S. Jumper, M. 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McCain, G. S. Kyle, N. Willis, N. Means, D. K. Mishra, P. Ružička, M. Virius, J. Asai, Manabu Togawa, V. S. Pantuev, Byung-Sik Hong, M. Sarsour, J. G. Lajoie, M. Grosse Perdekamp, J. G. Rubin, X. Bai, Y. Watanabe, L. Tomášek, G. R. Young, D. Kotov, J. Sun, M. Alfred, T. Hachiya, P. Mikeš, M. Sano, Agneta Oskarsson, S. Lee, J. Egdemir, Jennifer E. Perry, N. Apadula, M. E. Connors, Bruno Espagnon, H. W. Yu, Shingo Sakai, S. H. Aronson, S. K. Park, Viktor Riabov, Shoichi Hasegawa, J. D. Orjuela Koop, C. H. Chen, D. Mukhopadhyay, G. David, A. Vossen, Tomofumi Nagae, J. L. Nagle, L. Patel, S. Leckey, A. Shaver, A. Kravitz, Sung Keun Park, A. Taranenko, J. Hamblen, A. A. Vinogradov, D. M. Lee, Hiroaki Ohnishi, K. B. Lee, Henrik Tydesjö, S. P. Whitaker, A. Manion, S. H. Lee, Serpil Yalcin, G. H. Lee, Y. Cobigo, C. McKinney, S. Choi, P. Castera, A. Glenn, Hirohiko Sato, S. Yokkaichi, S. K. Tuli, J. M. Heuser, R. Petti, M. Mishra, Brennan Schaefer, S. Nagamiya, S. J. Jeon, Kazuhiro Tanaka, A. Soldatov, J. Bryslawskyj, Jiangyong Jia, Y. Goto, T. Horaguchi, Y. Sekiguchi, T. C. Awes, Kyoichiro Ozawa, T. Liška, Josh Moss, Aaron Angerami, D. Kawall, Jun Kikuchi, K. Tanida, N. N. Ajitanand, Vaclav Vrba, Klaus Johannes Reygers, Astrid Morreale, Jason Kamin, T. V. Moukhanova, S. Esumi, Eunja Kim, Kenjiro Miki, H. Obayashi, David Olle Rickard Silvermyr, Bruno Lenzi, Rui Wei, W. Holzmann, H. F. Hamilton, D. Sharma, E. Kistenev, Maya Hachiya Shimomura, V. I. Kochetkov, C. L. Woody, Vardan Khachatryan, A. Berdnikov, W. A. Zajc, Yu. Efremenko, M. Proissl, P. Rosnet, L. Ding, Dmitry Blau, S. Mioduszewski, M. Kofarago, D. Kleinjan, L. Xue, K. Fujiwara, R. Ichimiya, D. Winter, D. Yu Peressounko, Y. I. Makdisi, D. Roach, K. M. Kijima, P. Lichtenwalner, G. D. N. Perera, V. Baublis, Yuki Watanabe, Y. L. Yamaguchi, V. Cianciolo, Zvi Hirsh Citron, Dennis Perepelitsa, H. Harada, K. Hashimoto, S. P. Stoll, E. J. Desmond, Sergey Fokin, J. H. Kang, Y. Miyachi, A. Caringi, J. S. Haggerty, Takahiro Nakamura, Tae-Yeon Lee, S. R. Lee, A. Romana, Xingguo Li, Gerd Joachim Kunde, Martin Purschke, F. Gastineau, S. Mizuno, I. Shein, K. Okada, T. W. Jones, Petr Gallus, J. Hanks, M. B. Deaton, E. Vazquez-Zambrano, A. Nederlof, B. Sahlmueller, Y. Berdnikov, O. Dietzsch, A. Garishvili, A. Hadj Henni, I. Danchev, E. T. Atomssa, Gary Grim, H. Valle, K. Sedgwick, H. En'yo, I. V. Sourikova, Dipanwita Dutta, S. Batsouli, K. V. Dharmawardane, A. Rakotozafindrabe, Y. Tanaka, Susumu Oda, E. Mannel, T. K. Shea, J. L. Drachenberg, Alberto Baldisseri, Mihael Makek, C. Gal, M. J. Leitch, M. J. Kweon, Julia Velkovska, Y. S. Lai, D. Kotchetkov, Beomkyu Kim, M. Javani, T. Shohjoh, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, S. S.E. Rosendahl, M. J. Tannenbaum, H. J. Moon, F. Staley, L. Baksay, Wei Xie, A. Deshpande, A. Durum, M. Moskowitz, I. E. Yushmanov, G. Bunce, R. Kitamura, Z. Fraenkel, B. K. Schmoll, J.-G. Park, N. Cronin, A. P.T. Palounek, E. Tennant, I. J. Choi, S. Rembeczki, B. Xia, R. K. Choudhury, D. Bucher, K. Yamaura, A. Meles, Osamu Jinnouchi, P. Steinberg, Matthew G. Reuter, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, L. S. Zolin, W. J. Park, Christopher Rosen, P. D. Barnes, A. Yanovich, Z. Rowan, Tomoya Tsuji, M. Mendoza, M. L. Brooks, S. N. White, Deepa Thomas, H. Ge, K. Das, K. Nakano, K. B. Kim, W. E. Sondheim, K. Boyle, P. A. Rukoyatkin, D. Hornback, S. Y. Fung, A. Churyn, D. Danley, B. Meredith, Hongfang Liu, D. E. Fields, H. A. Torii, Toru Sugitate, L. D. Isenhower, D. Jouan, M. McCumber, A. K. Purwar, N. Riveli, François Fleuret, B. Forestier, M. Chiu, M. K. Mitrovski, C. A. Ogilvie, T. K. Hemmick, Bhawani Singh, B. J. Ramson, Yasuo Miake, K. DeBlasio, L. Kochenda, M. Issah, R. Pinson, Y. Akiba, Don McGlinchey, T. Kawagishi, S. Wolin, K. Watanabe, Christian Klein-Boesing, N. Kamihara, Aram Kim, F. Matathias, R. Armendariz, Byoungchoo Park, K. Shoji, Anand Kumar Dubey, C. Oakley, A. Drees, J. Kubart, S. Kanda, Yongsun Kim, P. W. Stankus, B. Kimelman, J. Midori, P. Montuenga, C. R. Cleven, I. Younus, C. Haegemann, Y. Inoue, Peter Christiansen, P. J. Kroon, T. Kempel, Y. Imazu, Steven E. Skutnik, T. O. S. Haseler, H. Qu, P. B. Diss, Hideki Hamagaki, K. Aoki, M. Vargyas, T. Todoroki, K. I. Hahn, A. Sexton, A. Kozlov, R. Seto, K. Haruna, B. Fadem, V. Dzhordzhadze, X. He, J. Zimamyi, O. O. Omiwade, Y. Aramaki, V. Peresedov, Robert Vertesi, J. Koster, H. Masui, A. A. Bickley, and A. Mwai

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Critical phenomena, Constituent quark, Kinetic energy, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Nucleon, Glauber
Abstract

Measurements of midrapidity charged particle multiplicity distributions, $dN_{\rm ch}/d\eta$, and midrapidity transverse-energy distributions, $dE_T/d\eta$, are presented for a variety of collision systems and energies. Included are distributions for Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$, 130, 62.4, 39, 27, 19.6, 14.5, and 7.7 GeV, Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ and 62.4 GeV, Cu$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV, U$+$U collisions at $\sqrt{s_{_{NN}}}=193$ GeV, $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV, $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV, and $p$$+$$p$ collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Centrality-dependent distributions at midrapidity are presented in terms of the number of nucleon participants, $N_{\rm part}$, and the number of constituent quark participants, $N_{q{\rm p}}$. For all $A$$+$$A$ collisions down to $\sqrt{s_{_{NN}}}=7.7$ GeV, it is observed that the midrapidity data are better described by scaling with $N_{q{\rm p}}$ than scaling with $N_{\rm part}$. Also presented are estimates of the Bjorken energy density, $\varepsilon_{\rm BJ}$, and the ratio of $dE_T/d\eta$ to $dN_{\rm ch}/d\eta$, the latter of which is seen to be constant as a function of centrality for all systems.

Published
2016

5. Photoproduction of J/ψ and of high mass e+e− in ultra-peripheral Au + Au collisions at sNN=200 GeV

Author

T. L. Thomas, R. Vértesi, Masamichi Ishihara, Kensuke Homma, J. M. Heuser, Ryugo S. Hayano, J. Gosset, M. Gonin, J. P. Sullivan, S. Chernichenko, Y. Riabov, Minghui Liu, Kenta Shigaki, H. Lim, K. Hasuko, B. Bassalleck, M. Nguyen, A. S. Nyanin, Hiroyuki Okada, K. Kurita, M. Heffner, Kenneth Francis Read, T. Ichihara, H. Pereira, J. Murata, J. Chiba, M. Konno, J. M. Burward-Hoy, Joakim Nystrand, Eva Haslum, P. Tarján, G. C. Mishra, E. J. Desmond, Takao Sakaguchi, M. Togawa, S. Kelly, V. Bumazhnov, M. P. Comets, J. Park, Y. J. Kwon, W. C. Smith, Florian Bauer, S. Bathe, S. Yokkaichi, N. N. Ajitanand, C. Klein-Boesing, Y. Tsuchimoto, A. D. Frawley, Robert F. Hobbs, M. Rosati, T. Tabaru, J. L. Drachenberg, Y. Berdnikov, I. E. Yushmanov, Eun-Hee Kim, S. Y. Fung, M. K. Lee, Takahiro Nakamura, Alexei Khanzadeev, I. Tserruya, T. V. Moukhanova, S. H. Aronson, Y. Akiba, S. Nagamiya, J. T. Mitchell, S. Kametani, Senta Greene, S. P. Sorensen, Yu. Efremenko, B. Komkov, Hans-Åke Gustafsson, A. A. Vinogradov, K. Das, Henrik Tydesjö, T. Shohjoh, A. Ster, W. Holzmann, Kazuhiro Tanaka, C. A. Ogilvie, Jiangyong Jia, Tadaaki Isobe, Vladislav Manko, Evert Anders Stenlund, Debashish Pal, V. Singh, J. S. Chai, Norio Saito, T. K. Hemmick, M. A. L. Leite, A. Durum, J. H. Kang, J. S. Haggerty, S. Sawada, E. P. Hartouni, A. Hadj Henni, J. Newby, G. Roche, Yasuo Miake, Maya Hachiya Shimomura, B. E. Norman, Y. Tanaka, A. Franz, Y. Goto, John Hill, H. A. Torii, L. Kochenda, Y. I. Makdisi, A. Romana, E. O'Brien, P. L. McGaughey, D. S. Brown, M. N. Hagiwara, Wei Xie, Shingo Sakai, C. L. Woody, S. Gadrat, Toru Sugitate, T. Kawagishi, B. Azmoun, J. G. Lajoie, T. Hachiya, David D'Enterria, R. A. Soltz, H. Borel, A. V. Kazantsev, C. Vale, Ingvar Otterlund, B. Espagnon, Klaus Johannes Reygers, Anders Nils Erik Oskarsson, I. J. Choi, Christine Angela Aidala, M. J. Tannenbaum, S. Batsouli, M. Grosse Perdekamp, V. Babintsev, L. D. Isenhower, Hiroaki Ohnishi, T. K. Shea, R. P. Pisani, A. Taranenko, D. Mukhopadhyay, M. J. Kweon, G. S. Kyle, François Fleuret, N. Kamihara, F. Matathias, R. Armendariz, O. Dietzsch, H. Valle, D. Bucher, N. Willis, D. E. Fields, I. V. Sourikova, Osamu Jinnouchi, Y. Le Bornec, B. V. Jacak, S. V. Afanasiev, L. Aphecetche, James Alexander, Matthew G. Reuter, A. Drees, T. C. Awes, Kyoichiro Ozawa, R. Averbeck, Byung-Sik Hong, Nikolay Tyurin, M. C. McCain, J. G. Boissevain, A. Bazilevsky, M. N. Wagner, Masashi Kaneta, B. Forestier, M. T. Bjorndal, I. D. Ojha, Alexander Malakhov, A. K. Purwar, Julia Velkovska, J. Egdemir, A. P.T. Palounek, H. Pei, M. Wysocki, D. Winter, D. Silvermyr, D. Yu Peressounko, P. Rosnet, Y. Fukao, Xingguo Li, Alexandre Lebedev, D. M. Lee, L. S. Zolin, C. Pinkenburg, Johannes Peter Wessels, M. Csanad, S. P. Stoll, W. J. Park, R. S. Towell, S. S.E. Rosendahl, G. Bunce, P. D. Barnes, A. Yanovich, M. Stepanov, Akio Kiyomichi, C. Zhang, Hirohiko Sato, A. Dion, M. Issah, S. F. Pate, D. Jouan, Margaret Harvey, V-N. Tram, S. N. White, N. Kurihara, M. D. Malik, E. Vznuzdaev, S. K. Tuli, Viktor Riabov, Motoi Inaba, M. G. Hur, C. Y. Chi, Charles Maguire, S. Leckey, C. R. Cleven, W. E. Sondheim, V. Papavassiliou, K. Boyle, P. A. Rukoyatkin, S. Belikov, K. S. Joo, W. A. Zajc, Josh Moss, J. E. Frantz, H. W. Van Hecke, V. Baublis, A. Denisov, V. Cianciolo, Jen-Chieh Peng, E. Kistenev, P. J. Kroon, Sergey Fokin, C. P. Singh, T. Horaguchi, B. M. Johnson, H. Harada, S. Esumi, A. Kiss, D. Sharma, A. Glenn, A. Taketani, Xiong Wang, Z. Conesa del Valle, K. S. Sim, Steven E. Skutnik, Henner Buesching, Dong Jo Kim, Martin Purschke, F. Gastineau, V. L. Rykov, T. Dahms, A. Isupov, C. Suire, H. Qu, D. Kotchetkov, Hideki Hamagaki, K. Aoki, G. David, Junji Tojo, Z. Fraenkel, Alexander Milov, N. Grau, J. Sziklai, K. Shoji, I. Ravinovich, O. Drapier, P. W. Stankus, E. R. Kinney, Brian Cole, D. P. Morrison, S. Campbell, V. E. Semenov, J. Zimányi, Tatsuya Chujo, Y. Nagata, H. Hiejima, S. S. Ryu, Saskia Mioduszewski, K. Imai, R. Bennett, Ahmed Al-Jamel, J. Jin, E. M. Takagui, O. Zaudtke, Jan Rak, R. Lacey, R. Granier de Cassagnac, Y. Cobigo, Anne Marie Sickles, G. R. Young, M. Naglis, C. L. Silva, V. S. Pantuev, Susumu Sato, S. Butsyk, Vladimir Samsonov, Tamas Ferenc Csorgo, K. Okada, J. L. Nagle, B. Sahlmueller, H. En'yo, P. Constantin, M. J. Leitch, F. Staley, A. Deshpande, Y. Watanabe, I. Younus, A. Soldatov, K. Tanida, V. I. Kochetkov, Gerd Joachim Kunde, I. Shein, X. He, O. O. Omiwade, V. Peresedov, H. Masui, A. K. Dubey, S. Takagi, K. N. Barish, Taku Gunji, F. Kajihara, H. Delagrange, A. Baldisseri, Y. S. Kim, T. E. Miller, A. Enokizono, M. Holmes, M. Chiu, T. A. Shibata, M. L. Brooks, D. Isenhower, Marie Germain, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, and V. Dzhordzhadze

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, High mass, High Energy Physics::Experiment, Neutron, Coulomb excitation, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, 01 natural sciences
Abstract

We present the first measurement of photoproduction of J/psi and of two-photon production of high-mass e(+)e(-) pairs in electromagnetic (or ultra-peripheral) nucleus-nucleus interactions, using Au + Au data at root s(NN) = 200 GeV. The events are tagged with forward neutrons emitted following Coulomb excitation of one or both Au* nuclei. The event sample consists of 28 events with m(e+e-) > 2 GeV/c(2) with zero like-sign background. The measured cross sections at midrapidity of d sigma/dy (J/psi + Xn, y = 0) = 76 +/- 33 (stat) +/- 11 (syst) pb and d(2)sigma /dm dy (e(+) e(-) + Xn, y = 0) = 86 +/- 23(stat) +/- 16(syst) mu b/ (GeV/c(2)) for m(e+e-) epsilon vertical bar 2.0, 2.8 vertical bar GeV/c(2) have been compared and found to be consistent with models for photoproduction of J/psi and QED based calculations of two-photon production of e(+)e(-) pairs. (C) 2009 Elsevier B.V. All rights reserved.

Published
2009

6. Correlated production of p and p¯ in Au+Au collisions at sNN=200 GeV

Author

J. Chiba, M. B. Deaton, R. A. Soltz, H. Borel, M. Grosse Perdekamp, Y. Tanaka, T. K. Shea, G. C. Mishra, Takao Sakaguchi, S. Bathe, Agneta Oskarsson, B. Love, Marie Germain, J. L. Charvet, C. R. Cleven, C. Haegemann, Y. Inoue, C. Klein-Boesing, A. D. Frawley, Y. Berdnikov, Y. Akiba, S. Afanasiev, A. Ster, I. Tserruya, A. G. Litvinenko, P. J. Kroon, T. Tabaru, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, J. Newby, G. Roche, T. E. Miller, E. T. Atomssa, S. Esumi, Yu. Efremenko, V. Singh, Dong-Hun Kim, S. H. Aronson, L. Baksay, Vaclav Vrba, Klaus Johannes Reygers, Charles Maguire, P. Chung, Robert F. Hobbs, T. Hester, W. A. Zajc, V. Baublis, M. Issah, Debashish Pal, S. Sawada, A. Kozlov, W. Holzmann, J. Ying, A. Franz, S. Leckey, Josh Moss, E. Kistenev, D. Hornback, M. Heffner, A. Denisov, S. Belikov, K. S. Joo, V. Cianciolo, R. Seto, K. Haruna, M. Mitrovski, Y. L. Yamaguchi, Tadaaki Isobe, Maya Hachiya Shimomura, Y. I. Makdisi, A. Taranenko, Kazushi Miki, M. Wysocki, Sergey Fokin, M. Holmes, M. D. Malik, E. Vznuzdaev, D. Winter, M. P. Comets, D. Yu Peressounko, V. Dzhordzhadze, Hirohiko Sato, Alexei Khanzadeev, H. Harada, H. Pei, J. S. Chai, T. Horaguchi, N. Grau, K. Shoji, A. Kiss, E. Stenlund, J. L. Drachenberg, S. F. Pate, W. S. Emam, P. L. McGaughey, P. Tarján, J. M. Burward-Hoy, B. Komkov, Norio Saito, M. A. L. Leite, S. Batsouli, X. He, Y. Nakamiya, S. K. Tuli, O. O. Omiwade, K. Dehmelt, P. W. Stankus, M. J. Tannenbaum, Marisilvia Donadelli, V. Bumazhnov, Z. Yasin, Henner Buesching, H. Sakata, L. Aphecetche, H. Al-Bataineh, V. Papavassiliou, J. Egdemir, M. Chiu, T. A. Shibata, S. P. Sorensen, V. Peresedov, Y. Le Bornec, K. Hasuko, Steven E. Skutnik, Jason Kamin, M. C. McCain, G. Baksay, V-N. Tram, S. Kelly, N. N. Ajitanand, Dylan Walker, W. C. Smith, Marcus Hohlmann, Andry Malala Rakotozafindrabe, Senta Greene, D. Isenhower, D. Mukhopadhyay, S. Rembeczki, D. Sharma, Jen-Chieh Peng, K. Das, B. Forestier, Jan Rak, Hiroyuki Okada, V. Babintsev, A. P.T. Palounek, S. P. Stoll, A. Toia, L. Mašek, M. T. Bjorndal, Johannes Peter Wessels, B. E. Norman, Minghui Liu, D. Bucher, E. P. Hartouni, H. Masui, A. K. Dubey, Joakim Nystrand, G. S. Kyle, Tae-Yeon Lee, Eva Haslum, B. Lenzi, Martin Purschke, F. Gastineau, H. Qu, R. Granier de Cassagnac, M. K. Lee, Takahiro Nakamura, A. Adare, P. Rosnet, Kenneth Francis Read, Xiong Wang, A. A. Bickley, K. O. Eyser, S. S.E. Rosendahl, G. Bunce, K. Fujiwara, H. A. Gustafsson, Susumu Oda, D. Kotchetkov, T. Shohjoh, H. Kanou, Taku Gunji, H. Gong, L. Tomášek, A. Hadj Henni, A. V. Kazantsev, S. Takagi, Hideki Hamagaki, K. Aoki, G. David, T. V. Moukhanova, C. Zhang, J. Seele, James Alexander, R. Averbeck, Byung-Sik Hong, A. Durum, V. S. Pantuev, A. Bazilevsky, K. N. Barish, F. Kajihara, F. Matathias, Dong Jo Kim, A. Morreale, Osamu Jinnouchi, A. Churyn, Z. Fraenkel, P. Mikeš, Kensuke Homma, E. O'Brien, Catherine Micaela Silvestre, D. S. Brown, Motoi Inaba, J. G. Lajoie, T. Hachiya, H. Delagrange, K. Boyle, D. Jouan, Wei Xie, Yoichiro Fukao, M. Harvey, Roy A. Lacey, R. Vértesi, B. Azmoun, A. Král, M. J. Kweon, S. Chernichenko, H. Lim, Alexandre Lebedev, Viktor Riabov, T. C. Awes, D. M. Lee, B. Bassalleck, Anne Marie Sickles, Junji Tojo, D. E. Fields, S. Zhou, Kyoichiro Ozawa, T. Liška, Mate Csanad, Rushan Han, M. N. Hagiwara, Jun Kikuchi, M. Konno, B. V. Jacak, H. W. Van Hecke, C. A. Ogilvie, M. L. Brooks, I. J. Choi, A. Baldisseri, J. T. Mitchell, A. Kravitz, M. McCumber, A. K. Purwar, K. Okada, M. Oka, Hiroaki Ohnishi, Y. S. Kim, A. Dion, R. Seidl, S. Butsyk, Vladislav Manko, Christophe Pierre Suire, Alexander Milov, T. K. Hemmick, I. Nakagawa, M. Slunečka, Yasuo Miake, Vladimir Samsonov, Atsushi Taketani, A. Enokizono, I. Otterlund, B. Sahlmueller, E. H. Kim, H. En'yo, P. Constantin, M. J. Leitch, O. Drapier, Frank Ellinghaus, G. R. Young, E. R. Kinney, D. P. Morrison, L. Kochenda, N. Willis, C. Vale, T. Kawagishi, S. Campbell, B. S. Chang, Christine Angela Aidala, J. Klay, V. E. Semenov, J. Zimányi, R. Pak, Tamas Ferenc Csorgo, K. S. Sim, J. L. Nagle, Tatsuya Chujo, N. Kamihara, Y. Kwon, R. Armendariz, Xingguo Li, M. Gonin, H. Hiejima, Kazuyoshi Kurita, E. J. Desmond, T. L. Thomas, David D'Enterria, K. Imai, A. Drees, Xiao-yan Li, J. Kubart, H. Pereira, M. Togawa, J. Park, Florian Bauer, Ryugo S. Hayano, R. P. Pisani, Y. Riabov, Y. Tsuchimoto, Kenta Shigaki, M. Nguyen, I. E. Yushmanov, Nikolay Tyurin, A. S. Nyanin, M. N. Wagner, J. E. Frantz, M. Ouchida, J. Asai, Shingo Sakai, C. L. Woody, A. Shevel, D. Lynch, I. V. Sourikova, A. Glenn, V. L. Rykov, T. Dahms, I. Ravinovich, Y. Nagata, A. Deshpande, Y. Watanabe, S. S. Ryu, T. Ichihara, I. Younus, Matthew G. Reuter, A. Soldatov, D. Kawall, K. Tanida, V. I. Kochetkov, Takahiro Fusayasu, J. Murata, R. Bennett, Gerd Joachim Kunde, I. Shein, C. P. Singh, B. M. Johnson, I. D. Ojha, Alexander Malakhov, A. Isupov, Ahmed Al-Jamel, M. Finger, J. Sziklai, D. Silvermyr, Brian Cole, M. Naglis, L. S. Zolin, C. L. Silva, Saskia Mioduszewski, W. J. Park, Masayasu Ishihara, O. Zaudtke, Susumu Sato, F. Staley, M. Virius, P. D. Barnes, A. Yanovich, J. Jin, E. M. Takagui, R. S. Towell, S. Y. Fung, I. Garishvili, Akio Kiyomichi, N. Kurihara, Y. Cobigo, M. G. Hur, C. Y. Chi, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, François Fleuret, S. N. White, K. Nakano, W. E. Sondheim, O. Dietzsch, H. Valle, Y. J. Mao, S. Kametani, P. A. Rukoyatkin, J. H. Kang, Julia Velkovska, J. S. Haggerty, A. Romana, M. Rosati, S. Gadrat, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, Jiangyong Jia, Y. S. Lai, Y. Goto, J. Gosset, J. P. Sullivan, S. Yokkaichi, J. M. Heuser, J. G. Boissevain, Masashi Kaneta, C. Pinkenburg, and M. Stepanov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Meson, 010308 nuclear & particles physics, Nuclear Theory, High Energy Physics::Phenomenology, Parton, 01 natural sciences, Nuclear physics, Baryon, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Sign (mathematics), Bar (unit)
Abstract

Correlations between p and (p) over bar at transverse momenta typical of enhanced baryon production in Au + Au collisions are reported. The PHENIX experiment has measured same and opposite sign baryon pairs in Au + Au collisions at root s(NN) = 200 GeV. Correlated production of p and p with the trigger particle from the range 2.5 < p(T) < 4.0 GeV/c and the associated particle with 1.8 < p(T) < 2.5 GeV/c is observed to be nearly independent of the centrality of the collisions. Same sign pairs show no correlation at any centrality. The conditional yield of mesons triggered by baryons (and anti-baryons) and mesons in the same p(T) range rises with increasing centrality, except for the most central collisions, where baryons show a significantly smaller number of associated mesons. These data are consistent with a picture in which hard scattered partons produce correlated p and (p) over bar in the p(T) region of the baryon excess. (c) 2007 Elsevier B.V. All rights reserved.

Published
2007

7. Systematic study of azimuthal anisotropy in Cu + Cu and Au + Au collisions atsNN=62.4and 200 GeV

Author

F. Matathias, Kensuke Homma, S. Chernichenko, H. Lim, B. Bassalleck, M. Konno, Tadaaki Isobe, J. S. Chai, P. L. McGaughey, Y. Nakamiya, D. Lynch, G. Baksay, B. Forestier, M. T. Bjorndal, B. Sahlmueller, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, C. Vale, B. S. Chang, J. Klay, P. Rosnet, O. Dietzsch, S. Afanasiev, A. Ster, K. O. Eyser, K. Fujiwara, H. Valle, J. Newby, G. Roche, Julia Velkovska, J. Chiba, T. Ichihara, D. Hornback, V. S. Pantuev, A. Taranenko, H. W. Van Hecke, G. C. Mishra, Takao Sakaguchi, Kazushi Miki, M. Harvey, J. L. Drachenberg, C. Klein-Boesing, Osamu Jinnouchi, Takahiro Fusayasu, I. D. Ojha, J. G. Boissevain, Masashi Kaneta, Alexander Malakhov, H. Pei, A. D. Frawley, D. Silvermyr, Y. Fukao, A. Shevel, K. Hasuko, D. Kawall, L. S. Zolin, W. J. Park, K. Okada, S. P. Sorensen, M. Gonin, C. Pinkenburg, S. Huang, S. H. Aronson, V. I. Kochetkov, M. Rosati, Tamás Csörgő, Dylan Walker, T. Hester, H. En'yo, P. D. Barnes, A. Yanovich, B. Love, Joakim Nystrand, P. Constantin, M. J. Leitch, Eva Haslum, B. Lenzi, M. Stepanov, W. Holzmann, Marie Germain, J. Murata, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, Maya Hachiya Shimomura, A. G. Litvinenko, J. Gosset, S. N. White, Jiangyong Jia, Y. Goto, J. P. Sullivan, Y. I. Makdisi, Gerd Joachim Kunde, I. Shein, G. S. Kyle, J. M. Burward-Hoy, Alexei Khanzadeev, A. Kozlov, R. Seto, V-N. Tram, K. Nakano, E. Stenlund, K. Haruna, James Alexander, H. Sakata, Charles Maguire, W. C. Smith, S. Leckey, W. E. Sondheim, C. L. Woody, M. J. Tannenbaum, Motoi Inaba, R. Averbeck, Byung-Sik Hong, S. Yokkaichi, J. M. Heuser, V. Dzhordzhadze, Robert F. Hobbs, X. He, Alberto Baldisseri, A. Deshpande, C. P. Singh, A. Bazilevsky, K. Das, K. Boyle, P. A. Rukoyatkin, Mate Csanad, M. K. Lee, I. Tserruya, Y. J. Mao, O. O. Omiwade, S. Y. Fung, Josh Moss, D. Mukhopadhyay, Yu. Efremenko, S. Kametani, V. Peresedov, Robert Vertesi, Y. Le Bornec, B. M. Johnson, E. P. Hartouni, S. Rembeczki, J. G. Lajoie, V. Singh, Alexandre Lebedev, Kiyoshi Tanida, J. H. Kang, D. Bucher, D. M. Lee, Steven E. Skutnik, J. S. Haggerty, A. Romana, T. Hachiya, A. Kiss, A. Isupov, Y. Watanabe, E. Kistenev, John Hill, Anne Marie Sickles, David D'Enterria, I. V. Sourikova, S. Butsyk, H. A. Torii, Toru Sugitate, T. L. Thomas, L. D. Isenhower, Y. L. Yamaguchi, S. Gadrat, H. Masui, A. K. Dubey, J. Sziklai, A. A. Bickley, Minghui Liu, T. V. Moukhanova, Vladimir Samsonov, B. Komkov, I. Younus, Ryugo S. Hayano, S. Takagi, I. Otterlund, S. Bathe, Norio Saito, T. Todoroki, H. Harada, Z. Yasin, Hirohiko Sato, S. K. Tuli, Henner Buesching, M. A. L. Leite, Y. Riabov, Brian Cole, M. Heffner, K. N. Barish, R. P. Pisani, Kenneth Francis Read, Kenta Shigaki, A. Soldatov, Debashish Pal, M. Nguyen, G. R. Young, H. Qu, François Fleuret, R. S. Towell, M. B. Deaton, A. S. Nyanin, Christophe Pierre Suire, Alexander Milov, I. Garishvili, Akio Kiyomichi, S. Sawada, Y. S. Lai, S. Batsouli, Rachid Nouicer, Nikolay Tyurin, I. J. Choi, A. Kravitz, I. Nakagawa, A. V. Kazantsev, M. Naglis, Hideki Hamagaki, K. Aoki, G. David, N. Kurihara, Frank Ellinghaus, Y. Tanaka, V. Babintsev, C. L. Silva, B. Azmoun, J. Ying, E. R. Kinney, K. S. Sim, D. P. Morrison, T. K. Shea, S. Campbell, A. Král, M. J. Kweon, L. Tomášek, A. Franz, M. N. Wagner, Marcus Hohlmann, J. L. Nagle, M. L. Brooks, V. E. Semenov, Junji Tojo, Y. Kwon, P. Mikeš, M. Reuter, H. Iinuma, M. C. McCain, J. Zimányi, Masayasu Ishihara, Tatsuya Chujo, Torsten Dahms, K. Dehmelt, M. G. Hur, C. Y. Chi, H. Hiejima, Jen-Chieh Peng, Susumu Sato, F. Staley, L. Baksay, E. J. Desmond, N. Grau, A. P.T. Palounek, M. Oka, Xiao-yan Li, K. Shoji, K. Imai, Marisilvia Donadelli, V. Bumazhnov, T. C. Awes, Kyoichiro Ozawa, T. Liška, A. Dion, M. Togawa, Jun Kikuchi, Saskia Mioduszewski, Jan Rak, P. W. Stankus, J. Park, R. Lacey, K. Kurita, A. Enokizono, H. Pereira, Florian Bauer, W. A. Zajc, S. Kelly, R. Granier de Cassagnac, A. Adare, V. Baublis, S. Belikov, K. S. Joo, N. Kamihara, A. Rakotozafindrabe, N. N. Ajitanand, A. Denisov, V. Cianciolo, J. Jin, E. M. Takagui, Sergey Fokin, Y. Tsuchimoto, J. E. Frantz, Laurent Bernard Aphecetche, Herve Borel, A. Glenn, A. Taketani, V. L. Rykov, O. Zaudtke, M. Virius, Takahiro Nakamura, R. Armendariz, T. Horaguchi, C. R. Cleven, C. Haegemann, Y. Inoue, Rushan Han, M. N. Hagiwara, S. Esumi, D. Sharma, Y. Cobigo, I. Ravinovich, Susumu Oda, I. E. Yushmanov, Tae-Yeon Lee, Martin Purschke, C. A. Aidala, F. Gastineau, Y. Nagata, P. J. Kroon, T. Shohjoh, A. Durum, A. Drees, Dong-Hun Kim, H. A. Gustafsson, S. S. Ryu, Eun-Hee Kim, Catherine Micaela Silvestre, Agneta Oskarsson, D. Kotchetkov, D. S. Brown, C. Zhang, R. Bennett, A. Morreale, Ahmed Al-Jamel, J. Kubart, M. Finger, Z. Fraenkel, Y. Berdnikov, Viktor Riabov, M. Ouchida, Y. Akiba, R. Pak, S. F. Pate, M. Mishra, S. Nagamiya, J. Asai, Kazuhiro Tanaka, O. Drapier, J. Egdemir, H. Al-Bataineh, D. E. Fields, B. V. Jacak, M. McCumber, A. K. Purwar, Jason Kamin, Vaclav Vrba, Klaus Johannes Reygers, S. P. Stoll, V. Papavassiliou, Shingo Sakai, M. Mitrovski, M. Wysocki, S. S.E. Rosendahl, G. Bunce, A. Churyn, D. Jouan, Johannes Peter Wessels, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, L. Kochenda, M. Issah, T. Kawagishi, Hiroaki Ohnishi, M. D. Malik, E. Vznuzdaev, N. Willis, A. Hadj Henni, Wei Xie, Xingguo Li, R. A. Soltz, M. Grosse Perdekamp, D. Winter, M. P. Comets, D. Yu Peressounko, P. Tarján, T. Tabaru, Senta Greene, B. E. Norman, E. O'Brien, Xiong Wang, Dong Jo Kim, M. Chiu, T. A. Shibata, D. Isenhower, A. Toia, L. Mašek, J. L. Charvet, T. E. Miller, E. T. Atomssa, P. Chung, M. Holmes, W. S. Emam, H. Kanou, Taku Gunji, H. Gong, J. Seele, F. Kajihara, H. Delagrange, S. Zhou, and Y. S. Kim

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Angular momentum, Quantitative Biology::Neurons and Cognition, Hadron, Kinetic energy, Particle identification, Nuclear physics, High Energy Physics::Experiment, Impact parameter, Nuclear Experiment, Anisotropy, Energy (signal processing)
Abstract

We have studied the dependence of azimuthal anisotropy $v_2$ for inclusive and identified charged hadrons in Au$+$Au and Cu$+$Cu collisions on collision energy, species, and centrality. The values of $v_2$ as a function of transverse momentum $p_T$ and centrality in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$=200~GeV and 62.4~GeV are the same within uncertainties. However, in Cu$+$Cu collisions we observe a decrease in $v_2$ values as the collision energy is reduced from 200 to 62.4~GeV. The decrease is larger in the more peripheral collisions. By examining both Au$+$Au and Cu$+$Cu collisions we find that $v_2$ depends both on eccentricity and the number of participants, $N_{\rm part}$. We observe that $v_2$ divided by eccentricity ($\varepsilon$) monotonically increases with $N_{\rm part}$ and scales as ${N_{\rm part}^{1/3}}$. The Cu$+$Cu data at 62.4 GeV falls below the other scaled $v_{2}$ data. For identified hadrons, $v_2$ divided by the number of constituent quarks $n_q$ is independent of hadron species as a function of transverse kinetic energy $KE_T=m_T-m$ between $0.1

Published
2015

8. Predicting functional performance by patients with Alzheimer's disease using the Problems in Everyday Living (PEDL) Test: A preliminary study

Author

William W. Beatty and George S. Leckey

Subjects
education.field_of_study, Activities of daily living, General Neuroscience, Population, Neuropsychology, Disease, medicine.disease, Psychiatry and Mental health, Clinical Psychology, Predictive value of tests, Severity of illness, medicine, Dementia, Dementia diagnosis, Neurology (clinical), Psychology, education, human activities, Clinical psychology
Abstract

Findings from a recent population-based survey indicate that about 33% of patients with dementia reside alone. Because many of these patients may not have a caregiver who visits them regularly, the need for a neuropsychological (NP) test to predict patients' functional competence to live alone safely is evident. In this study, we compared the accuracy of predicting Instrumental and Basic Activities (IADLs and ADLs) of 22 patients with Alzheimer's disease using several standard NP tests and the newly developed Problems in Everyday Living (PEDL) test. Performance of IADLs and ADLs as rated by caregivers was significantly correlated with performance on the PEDL, the Mini-Mental State Exam (MMSE), and with the Shipley Institute of Living Test of Verbal Abstraction (SILS-A), but not with vocabulary or naming. The PEDL was the best predictor of IADL scores (r = 0.71), compared to the MMSE (r = 0.52) and the SILS-A (r = 0.57), while the MMSE was the best predictor of ADL performance (r = 0.69), compared to the PEDL (r = 0.58) and the SILS-A (r = 0.50). (JINS, 2002, 8, 48–57.)

Published
2002

9. Transverse-energy distributions at midrapidity inp+p,d+Au, andAu+Aucollisions atsNN=62.4–200 GeV and implications for particle-production models

Author

J. M. Burward-Hoy, R. A. Soltz, V. Bumazhnov, M. P. Comets, P. Rosnet, Vladislav Manko, Y. J. Kwon, Saskia Mioduszewski, W. C. Smith, Robert F. Hobbs, L. Sanfratello, W. C. Chang, Ferenc Deák, N. Kamihara, M. K. Lee, Yves Roland Schutz, F. Matathias, R. Armendariz, X. Camard, M. N. Hagiwara, Debashish Pal, S. Sawada, S. Butsyk, C. Vale, Vladimir Samsonov, A. Drees, I. Otterlund, J. Jin, A. Franz, A. Devismes, E. M. Takagui, T. L. Thomas, Taku Gunji, B. D. Fox, F. Kajihara, B. Espagnon, K. Das, E. P. Hartouni, R. S. Towell, H. Delagrange, C. H. Kuberg, Tamas Ferenc Csorgo, Akio Kiyomichi, O. Zaudtke, J. Chiba, H. W. Van Hecke, J. L. Nagle, V. S. Pantuev, N. Kurihara, S. Zhou, M. A. Volkov, M. Harvey, Y. S. Kim, M. Wysocki, B. Khachaturov, T. Matsumoto, M. G. Hur, C. Y. Chi, Y. Cobigo, M. Grosse Perdekamp, Ryugo S. Hayano, K. Hasuko, C. A. Ogilvie, M. Chiu, Ajit Kumar Mohanty, Kensuke Homma, T. A. Shibata, A. Deshpande, J. L. Drachenberg, K. Okada, T. K. Hemmick, N. N. Ajitanand, H. Kobayashi, A. Pierson, S. Bathe, Agneta Oskarsson, I. Ravinovich, G. C. Mishra, Y. Nagata, S. Chernichenko, H. En'yo, P. Constantin, Yasuo Miake, M. J. Leitch, H. Lim, Marie Germain, T. Ichihara, S. C. Johnson, B. Bassalleck, Y. Berdnikov, D. Isenhower, Joakim Nystrand, Takao Sakaguchi, S. S. Ryu, N. Grau, S. F. Pate, Eva Haslum, C. P. Singh, Y. Akiba, C. Klein-Boesing, Osamu Jinnouchi, H. Pei, M. Konno, German Martinez, Y. Riabov, Kenta Shigaki, David Olle Rickard Silvermyr, K. Shoji, S. Nagamiya, Kazuhiro Tanaka, B. M. Johnson, Takahiro Nakamura, A. D. Frawley, L. Kochenda, F. K. Wohn, Matthew G. Reuter, Klaus Johannes Reygers, B. Azmoun, M. J. Kweon, R. Bennett, A. Isupov, C. Suire, X. R. Wang, S. Afanasiev, M. Nguyen, D. Winter, D. Yu Peressounko, A. Ster, P. W. Stankus, Ahmed Al-Jamel, S. H. Aronson, T. Kawagishi, T. E. Miller, A. G. Litvinenko, J. E. Frantz, J. Sziklai, R. Santo, A. Enokizono, A. S. Nyanin, A. Kiss, G. Roche, Y. Le Bornec, S. P. Sorensen, W. Holzmann, Herve Borel, Brian Cole, M. Holmes, P. Tarján, Sean A. Kelly, Henner Buesching, A. Glenn, A. Taketani, R. Kohara, I. D. Ojha, Alexander Malakhov, V. L. Rykov, T. Dahms, Viktor Veszpremi, V. Papavassiliou, Maya Hachiya Shimomura, P. Chand, Y. I. Makdisi, J. Egdemir, T. Shohjoh, Y. Watanabe, A. Durum, C. R. Cleven, A. Dion, B. Forestier, M. T. Bjorndal, J. G. Boissevain, I. Younus, Masashi Kaneta, E. Kim, S. P. Stoll, A. Kozlov, L. S. Zolin, K. S. Sim, T. Tabaru, P. J. Kroon, R. Seto, K. Haruna, A. Taranenko, M. J. Tannenbaum, D. S. Brown, Senta Greene, W. J. Park, S. Belikov, K. S. Joo, V. V. Ikonnikov, Junji Tojo, S. S.E. Rosendahl, B. Sahlmueller, G. Bunce, A. Soldatov, B. E. Norman, E. O'Brien, K. Katou, P. D. Barnes, Steven E. Skutnik, D. Mukhopadhyay, V. Dzhordzhadze, D. Bucher, H. J. Kim, H. Qu, A. Yanovich, C. L. Woody, M. Inuzuka, Hideki Hamagaki, K. Aoki, D. E. Fields, G. David, X. He, O. O. Omiwade, B. V. Jacak, C. Pinkenburg, M. Naglis, S. Y. Fung, H. Hiejima, D. Jouan, A. K. Purwar, V. Peresedov, C. L. Silva, John Hill, K. Oyama, M. Stepanov, S. Esumi, Toru Sugitate, L. D. Isenhower, D. Sharma, Masayasu Ishihara, Susumu Sato, H. Masui, A. K. Dubey, J. Gosset, J. P. Sullivan, S. Takagi, M. Muniruzzaman, Martin Purschke, C. A. Aidala, F. Gastineau, K. N. Barish, I. V. Sourikova, H. Torii, François Fleuret, K. Imai, S. N. White, J. G. Lajoie, V. I. Kochetkov, J. Murata, T. J. Uam, D. Kotchetkov, M. L. Brooks, Gerd Joachim Kunde, W. E. Sondheim, I. Shein, S. Yokkaichi, J. M. Heuser, T. Hachiya, K. Boyle, P. A. Rukoyatkin, Alberto Baldisseri, Z. Fraenkel, Y. J. Mao, S. Kametani, Pàl Hidas, Anne Marie Sickles, Y. Tanaka, J. H. Kang, J. S. Haggerty, T. K. Shea, A. Romana, R. K. Choudhury, A. G. Hansen, Shingo Sakai, S. Gadrat, Nagahiro Saito, F. Staley, Charles Maguire, S. Leckey, G. R. Young, I. J. Choi, Josh Moss, Kiyoshi Tanida, E. Kistenev, Hiroaki Ohnishi, H. Harada, Y. Fukao, Jan Rak, R. Lacey, R. Granier de Cassagnac, V-N. Tram, J. M. Qualls, Motoi Inaba, M. Sarsour, Mate Csanad, David D'Enterria, R. P. Pisani, Xingguo Li, M. Gonin, Nikolay Tyurin, V.N. Penev, M. N. Wagner, K. Kurita, H. Pereira, Minghui Liu, M. Heffner, Kenneth Francis Read, Tadaaki Isobe, J. S. Chai, P. L. McGaughey, A. V. Kazantsev, Alexei Khanzadeev, N. Bruner, E. Stenlund, Jen-Chieh Peng, T. V. Moukhanova, E. J. Desmond, Dong Jo Kim, Jean-Pierre Cussonneau, M. Togawa, T. C. Awes, Kyoichiro Ozawa, J. Park, Florian Bauer, Jun Kikuchi, Y. Tsuchimoto, I. E. Yushmanov, Eun-Hee Kim, R. Vértesi, Ch. Finck, Jason Newby, Alexander Milov, O. Drapier, M. Rosati, M. Velkovsky, E. R. Kinney, D. P. Morrison, A. A. Vinogradov, Henrik Tydesjö, H. A. Gustafsson, S. Campbell, Jiangyong Jia, Y. Goto, V. E. Semenov, J. Zimányi, C. Zhang, Tatsuya Chujo, I. Tserruya, Yu. Efremenko, V. Singh, G. B. Kim, Viktor Riabov, B. Komkov, O. Dietzsch, H. Valle, S. Batsouli, Dipanwita Dutta, Julia Velkovska, M. A. L. Leite, Hirohiko Sato, S. K. Tuli, H. Iinuma, M. C. McCain, A. P.T. Palounek, V. Babintsev, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, T. Horaguchi, A. Hoover, S. S. Adler, G. S. Kyle, N. Willis, James Alexander, M. Issah, M. D. Malik, E. Vznuzdaev, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Alexandre Lebedev, D. M. Lee, Xiaopeng Zong, L. Aphecetche, Takeo Kawabata, Johannes Peter Wessels, A. Hadj Henni, Wei Xie, and J. T. Mitchell

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Transverse plane, Deuterium, Production model, High Energy Physics::Experiment, Nuclear Experiment, 16. Peace & justice, Nucleon, Glauber, Ansatz
Abstract

Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, /N-part increases with N-part, while /N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T distributions, is simply a proxy for N-qp, and that the N-coll term does not represent a hard-scattering component in E-T distributions. The dE(T)/d eta distributions of Au+Au and d+Au are then calculated from the measured p + p E-T distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not.

Published
2014

10. Direct photon production ind+Au collisions atsNN=200GeV

Author

A. Devismes, Y. Onuki, Taku Gunji, H. Gong, J. Seele, Alexander Milov, I. Nakagawa, Jan Rak, T. Engelmore, F. Kajihara, S. V. Afanasiev, L. Aphecetche, Takeo Kawabata, H. Pei, M. C. McCain, R. Lacey, Aaron Angerami, Tadaaki Isobe, O. Drapier, S. S. Adler, G. S. Kyle, H. Delagrange, Frank Ellinghaus, N. Willis, R. Granier de Cassagnac, A. Adare, E. R. Kinney, D. P. Morrison, James Alexander, S. Campbell, W. A. Zajc, Hongfang Liu, D. E. Fields, A. Dion, M. Slunečka, R. Averbeck, P. L. McGaughey, Byung-Sik Hong, V. Baublis, S. Zhou, A. Denisov, V. E. Semenov, J. Zimányi, B. V. Jacak, A. Bazilevsky, V. Cianciolo, Johannes Peter Wessels, Hiroaki Ohnishi, K. B. Lee, H. J. Kim, Y. Fukao, S. D. Rolnick, T. Murakami, Y. Tomita, Philippe Rosnet, Sergey Fokin, C. Silvestre, M. McCumber, A. K. Purwar, Robert F. Hobbs, J. M. Qualls, T. Hester, Alexandre Lebedev, R. Vértesi, A. Hoover, A. Hadj Henni, Dmitry Blau, Ch. Finck, Jason Newby, J. Murata, I. Tserruya, Yu. Efremenko, D. M. Lee, Xiaopeng Zong, E. J. Desmond, Masamichi Ishihara, B. Khachaturov, Beomkyu Kim, Jean-Pierre Cussonneau, M. Togawa, J. Hanks, E. Vazquez-Zambrano, D. Roach, S. Belikov, K. S. Joo, Florian Bauer, K. Watanabe, V. Singh, K. Shoji, A. Rakotozafindrabe, P. Tarján, Marisilvia Donadelli, K. M. Kijima, V. Bumazhnov, M. P. Comets, G. B. Kim, Sean A. Kelly, Minghui Liu, Wei Xie, V. S. Pantuev, M. Kasai, T. Matsumoto, K. Kiriluk, M. Chiu, Ajit Kumar Mohanty, Y. Tsuchimoto, Y. Iwanaga, Maya Hachiya Shimomura, I. E. Yushmanov, Eun-Hee Kim, M. Ouchida, Alexei Khanzadeev, Viktor Veszpremi, T. A. Shibata, C. L. Silva, T. Sato, N. Bruner, N. Means, E. Stenlund, Sung Keun Park, J. B. Choi, M. Heffner, P. W. Stankus, Kenneth Francis Read, S. Sawada, J. Ying, A. Franz, K. Hasuko, B. D. Fox, S. Tarafdar, K. S. Sim, J. Hamblen, A. Yu. Semenov, J. Asai, J. H. Bhom, H. A. Gustafsson, T. Ichihara, N. Apadula, R. Tanabe, D. Layton, N. N. Ajitanand, T. V. Moukhanova, Margaret Harvey, V-N. Tram, N. Grau, O. Dietzsch, B. Komkov, E. T. Atomssa, Y. I. Makdisi, Xingguo Li, Junji Tojo, Y. Kwon, J. Gosset, H. Valle, D. Isenhower, A. Toia, L. Mašek, A. G. Hansen, Shingo Sakai, Hirohiko Sato, Takahiro Nakamura, A. V. Kazantsev, Y. Tanaka, E. Mannel, T. K. Shea, J. P. Sullivan, R. Yang, H. Hiejima, Dipanwita Dutta, B. Espagnon, Joakim Nystrand, Eunja Kim, Eva Haslum, B. Lenzi, K. A. Drees, C. Zhang, German Martinez, Motoi Inaba, P. Ružička, Senta Greene, S. Taneja, K. Okada, Jen-Chieh Peng, W. C. Chang, D. McGlinchey, M. I. Nagy, Julia Velkovska, R. M. Wright, L. Tomášek, M. Rosati, M. Velkovsky, S. P. Sorensen, H. En'yo, D. Watanabe, Susumu Oda, A. T. Basye, M. D. Malik, C. L. Woody, A. Berdnikov, J. L. Charvet, Viktor Riabov, K. Imai, P. Constantin, M. J. Leitch, E. Vznuzdaev, H. Qu, H. J. Moon, F. Staley, L. Baksay, O. Chvala, M. Nihashi, A. Durum, B. Fadem, E. O'Brien, Gary Grim, M. J. Tannenbaum, Rushan Han, S. Esumi, S. Batsouli, K. V. Dharmawardane, A. Caringi, T. E. Miller, K. Karatsu, Inkyu Park, M. Inuzuka, R. A. Soltz, D. S. Brown, K. Yamaura, Z. Conesa del Valle, Hideki Hamagaki, K. Aoki, Seong H. Kim, Charles Maguire, S. Leckey, Takafumi Niida, Anne Marie Sickles, A. A. Vinogradov, Henrik Tydesjö, T. C. Awes, Kyoichiro Ozawa, T. Liška, R. Santo, Jiangyong Jia, Y. Goto, A. Ster, A. Enokizono, J. S. Bok, Jun Kikuchi, J. G. Lajoie, T. Hachiya, David D'Enterria, G. David, M. Grosse Perdekamp, V. V. Ikonnikov, K. I. Hahn, P. Chung, Dong Jo Kim, M. E. Connors, A. Pierson, J. M. Burward-Hoy, Josh Moss, Kiyoshi Tanida, M. K. Dayananda, M. Wysocki, D. Sharma, J. Imrek, D. Kleinjan, R. P. Pisani, D. Mukhopadhyay, R. Ichimiya, S. Rembeczki, S. Butsyk, Vladimir Samsonov, H. Iinuma, I. Otterlund, A. Veicht, A. Datta, E. Kistenev, I. J. Choi, A. Kravitz, J. M. Heuser, M. Gonin, Nikolay Tyurin, D. Bucher, I. V. Sourikova, H. Torii, T. L. Thomas, S. Yokkaichi, A. P.T. Palounek, C. H. Kuberg, G. R. Young, L. Sanfratello, David Olle Rickard Silvermyr, T. Jones, Peter Christiansen, K. Das, P. Lichtenwalner, D. Hornback, Tae-Yeon Lee, V.N. Penev, Martin Purschke, M. A. Volkov, J. Chiba, Alice Mignerey, Ryugo S. Hayano, L. D'Orazio, C. A. Aidala, D. Winter, D. Yu Peressounko, C. M. Camacho, E. P. Hartouni, A. Sukhanov, K. Kurita, H. Pereira, Prashant Shukla, G. C. Mishra, Y. Riabov, Kenta Shigaki, P. J. Kroon, Y. Ikeda, A. Taranenko, M. Nguyen, Kazushi Miki, Takao Sakaguchi, Tamas Ferenc Csorgo, T. Kempel, Dong-Hun Kim, J. G. Boissevain, S. F. Pate, Y. Morino, Masashi Kaneta, A. S. Nyanin, C. Klein-Boesing, Ke. Nakamura, Brajesh K. Singh, Rachid Nouicer, Norio Saito, M. Proissl, Tsutomu Mibe, J. L. Nagle, H. Al-Bataineh, X. R. Wang, K. Katou, A. D. Frawley, R. Pak, S. Huang, S. H. Aronson, C. Pinkenburg, V. Papavassiliou, W. Holzmann, Sébastien Gadrat, D. Kotchetkov, M. Stepanov, G. Roche, S. Kametani, T. Horaguchi, Pàl Hidas, J. H. Kang, J. S. Haggerty, A. Romana, A. Morreale, M. A. L. Leite, Z. Fraenkel, J. L. Drachenberg, Y. S. Lai, R. K. Choudhury, S. C. Johnson, B. Azmoun, Y. J. Mao, A. Král, M. J. Kweon, Y. Le Bornec, M. Oka, K. S. Lee, P. Liebing, C. A. Ogilvie, T. K. Hemmick, R. Belmont, J. S. Kapustinsky, J. M. Durham, V. Babintsev, A. Kiss, Henner Buesching, Steve Edwards, Yasuo Miake, P. Chand, Marcus Hohlmann, L. A. Linden Levy, P. Mikeš, X. Jiang, L. Kochenda, M. Issah, H. Kobayashi, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, K. Sakashita, Vaclav Vrba, Klaus Johannes Reygers, R. Kohara, Jason Kamin, M. Csanad, Rui Wei, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, J.-G. Park, A. Churyn, D. Jouan, Ferenc Deák, N. Kamihara, Aram Kim, R. Armendariz, C. Oakley, A. Drees, Xiao-yan Li, K. O. Eyser, K. Fujiwara, S. W. Nam, Y. L. Yamaguchi, I. Ravinovich, M. Bai, S. S. Ryu, Zhiying You, R. Bennett, H. W. Van Hecke, M. Kawashima, Ahmed Al-Jamel, M. Finger, S. Dairaku, O. Zaudtke, M. Virius, C. H. Chen, Y. Cobigo, J. E. Frantz, Jongmin Lee, Herve Borel, A. Glenn, A. Taketani, D. S. Jumper, V. L. Rykov, T. Dahms, X. He, Y. Aramaki, V. Peresedov, J. Koster, H. Masui, A. K. Dubey, A. A. Bickley, S. Takagi, S. Y. Fung, B. Meredith, K. N. Barish, S. Bathe, F. Matathias, Kensuke Homma, E. Richardson, John Hill, K. Oyama, S. Chernichenko, S. Sano, H. Lim, B. Bassalleck, Toru Sugitate, L. D. Isenhower, T. J. Uam, M. Konno, M. L. Brooks, B. Love, François Fleuret, Marie Germain, A. G. Litvinenko, J. T. Mitchell, Osamu Jinnouchi, F. K. Wohn, A. Kozlov, R. Seto, K. Haruna, Matthew G. Reuter, Takahiro Fusayasu, R. Seidl, Vladislav Manko, I. D. Ojha, Alexander Malakhov, V. Dzhordzhadze, I. Danchev, L. S. Zolin, W. J. Park, Christopher Rosen, P. D. Barnes, A. Yanovich, S. N. White, Deepa Thomas, T. Chujo, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, X. Camard, C. Vale, B. S. Chang, J. Klay, Y. Nakamiya, D. Lynch, G. Baksay, M. T. Bjorndal, B. Sahlmueller, Y. J. Kim, A. Deshpande, Y. Watanabe, I. Younus, A. Soldatov, D. Kawall, H. Themann, V. I. Kochetkov, Gerd Joachim Kunde, I. Shein, M. Kurosawa, Saskia Mioduszewski, K. Sedgwick, Alberto Baldisseri, Yves Roland Schutz, D. Pal, J. Jin, M. Naglis, E. M. Takagui, C. Baumann, C. P. Singh, B. M. Johnson, R. J. Petti, A. Isupov, C. Suire, J. Sziklai, Brian Cole, R. S. Towell, Susumu Sato, M. Muniruzzaman, I. Garishvili, Akio Kiyomichi, F. Wei, and C. Y. Chi

Subjects
Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, Virtual particle, 01 natural sciences, 7. Clean energy, Photon yield, Nuclear physics, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

Direct photons have been measured in root s(NN) = 200 GeV d + Au collisions at midrapidity. A wide p(T) range is covered by measurements of nearly real virtual photons (1 < p(T) < 6 GeV/c) and real photons (5 < p(T) < 16 GeV/c). The invariant yield of the direct photons in d + Au collisions over the scaled p + p cross section is consistent with unity. Theoretical calculations assuming standard cold-nuclear-matter effects describe the data well for the entire p(T) range. This indicates that the large enhancement of direct photons observed in Au + Au collisions for 1.0 < p(T) < 2.5 GeV/c is attributable to a source other than the initial-state nuclear effects.

Published
2013

11. Measurement of Direct Photons inAu+AuCollisions atsNN=200 GeV

Author

I. Ravinovich, M. Rosati, Y. Nagata, G. C. Mishra, A. V. Kazantsev, Takao Sakaguchi, S. S. Ryu, C. Klein-Boesing, A. A. Vinogradov, Henrik Tydesjö, R. A. Soltz, J. G. Boissevain, Masashi Kaneta, J. M. Burward-Hoy, A. D. Frawley, Jiangyong Jia, J. T. Mitchell, A. Ster, Y. Goto, H. A. Gustafsson, M. Grosse Perdekamp, M. E. Connors, R. Bennett, Robert F. Hobbs, S. H. Aronson, R. S. Towell, Akio Kiyomichi, N. Kurihara, Marie Germain, M. G. Hur, Ahmed Al-Jamel, C. Y. Chi, T. C. Awes, Kyoichiro Ozawa, C. Zhang, Osamu Jinnouchi, Matthew G. Reuter, David D'Enterria, C. Pinkenburg, Y. J. Kwon, W. C. Smith, J. Newby, Anne Marie Sickles, A. G. Litvinenko, B. Azmoun, W. Holzmann, M. J. Kweon, B. Komkov, I. D. Ojha, M. K. Lee, Vladislav Manko, Alexander Malakhov, R. P. Pisani, A. Deshpande, D. Winter, M. Chiu, M. Stepanov, G. Roche, V. Bumazhnov, M. P. Comets, D. Yu Peressounko, Steven E. Skutnik, J. E. Frantz, D. Silvermyr, Y. Le Bornec, S. P. Sorensen, K. Das, Masamichi Ishihara, Nikolay Tyurin, E. P. Hartouni, Minghui Liu, Viktor Riabov, M. N. Wagner, C. A. Ogilvie, Herve Borel, T. A. Shibata, Shingo Sakai, L. S. Zolin, T. K. Hemmick, P. Tarján, M. Heffner, Kenneth Francis Read, T. L. Thomas, Alexei Khanzadeev, Debashish Pal, S. Sawada, A. Kozlov, A. Franz, T. Ichihara, Y. Fukao, R. Seto, K. Haruna, Norio Saito, A. Glenn, A. Taketani, H. Qu, M. A. L. Leite, Yasuo Miake, A. Dion, D. E. Fields, B. V. Jacak, V. L. Rykov, T. Dahms, T. Tabaru, Ryugo S. Hayano, Jen-Chieh Peng, Y. Riabov, Hideki Hamagaki, K. Aoki, G. David, S. Kametani, V. Dzhordzhadze, S. Takagi, B. Espagnon, Kenta Shigaki, Senta Greene, M. Nguyen, E. Stenlund, A. K. Purwar, D. Isenhower, C. Vale, M. Issah, W. A. Zajc, K. N. Barish, J. H. Kang, J. S. Haggerty, A. Romana, L. Kochenda, A. Kiss, A. Taranenko, O. Zaudtke, Margaret Harvey, B. E. Norman, V-N. Tram, A. S. Nyanin, E. O'Brien, Christine Angela Aidala, S. F. Pate, G. R. Young, M. D. Malik, Charles Maguire, S. Leckey, Motoi Inaba, V. Baublis, A. Denisov, V. Cianciolo, E. Vznuzdaev, J. G. Lajoie, M. N. Hagiwara, V. S. Pantuev, O. Dietzsch, Xiong Wang, S. Kelly, C. R. Cleven, Henner Buesching, Sergey Fokin, V. Babintsev, T. Hachiya, N. N. Ajitanand, H. Valle, Josh Moss, S. Butsyk, Vladimir Samsonov, Dong Jo Kim, I. Otterlund, G. S. Kyle, T. Horaguchi, J. L. Drachenberg, N. Willis, James Alexander, T. Kawagishi, P. J. Kroon, Y. Cobigo, Takahiro Nakamura, M. T. Bjorndal, V. Papavassiliou, Sébastien Gadrat, T. E. Miller, Jan Rak, I. J. Choi, Maya Hachiya Shimomura, J. M. Heuser, Julia Velkovska, Kiyoshi Tanida, Tadaaki Isobe, Y. I. Makdisi, R. Averbeck, Byung-Sik Hong, Tamas Ferenc Csorgo, R. Lacey, M. Gonin, M. L. Brooks, A. Bazilevsky, J. S. Chai, A. Enokizono, L. Aphecetche, J. L. Nagle, Philippe Rosnet, B. Sahlmueller, K. Okada, K. Hasuko, S. Afanasiev, R. Granier de Cassagnac, E. Kistenev, Alexandre Lebedev, T. Shohjoh, H. En'yo, N. Grau, J. Egdemir, K. Kurita, H. Pereira, D. M. Lee, A. Durum, P. L. McGaughey, J. Imrek, M. Holmes, P. Constantin, M. J. Tannenbaum, M. J. Leitch, K. Shoji, Joakim Nystrand, Alexander Milov, X. He, O. O. Omiwade, D. S. Brown, Eva Haslum, P. W. Stankus, D. Mukhopadhyay, V. Peresedov, D. Bucher, O. Drapier, R. Pak, Taku Gunji, K. S. Sim, Hiroaki Ohnishi, M. Csanad, S. P. Stoll, E. R. Kinney, Junji Tojo, F. Kajihara, D. P. Morrison, S. Campbell, H. Hiejima, T. V. Moukhanova, S. S.E. Rosendahl, Johannes Peter Wessels, H. Delagrange, V. E. Semenov, J. Zimányi, K. Imai, H. Masui, G. Bunce, Tatsuya Chujo, I. Tserruya, C. L. Woody, Yu. Efremenko, H. Harada, W. J. Park, J.-G. Park, E. J. Desmond, A. K. Dubey, P. D. Barnes, A. Yanovich, S. N. White, V. Singh, W. E. Sondheim, K. Boyle, P. A. Rukoyatkin, S. Y. Fung, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, Xingguo Li, Kensuke Homma, A. Hadj Henni, S. Chernichenko, M. Togawa, S. Batsouli, D. Jouan, H. Lim, Y. S. Kim, B. Bassalleck, François Fleuret, B. Forestier, I. V. Sourikova, H. W. Van Hecke, Florian Bauer, Wei Xie, M. Konno, Hirohiko Sato, S. K. Tuli, S. Bathe, Y. Tsuchimoto, Agneta Oskarsson, J. Gosset, H. Iinuma, M. C. McCain, Y. Berdnikov, Y. Akiba, I. E. Yushmanov, Eun-Hee Kim, A. P.T. Palounek, S. Nagamiya, Kazuhiro Tanaka, J. P. Sullivan, Klaus Johannes Reygers, Y. Tanaka, N. Kamihara, S. Yokkaichi, T. K. Shea, F. Matathias, R. Armendariz, A. Drees, F. Staley, H. Pei, R. Vértesi, J. Murata, Y. Watanabe, Saskia Mioduszewski, J. Jin, E. M. Takagui, C. P. Singh, B. M. Johnson, A. Isupov, C. Suire, J. Sziklai, Brian Cole, I. Younus, S. Belikov, K. S. Joo, M. Wysocki, A. Soldatov, M. Naglis, C. L. Silva, S. Esumi, D. Sharma, Martin Purschke, F. Gastineau, Susumu Sato, D. Kotchetkov, V. I. Kochetkov, Z. Fraenkel, Gerd Joachim Kunde, I. Shein, Alberto Baldisseri, and J. Chiba

Subjects
Physics, Range (particle radiation), Photon, 010308 nuclear & particles physics, Bremsstrahlung, General Physics and Astronomy, Parton, Plasma, 01 natural sciences, 7. Clean energy, Distribution function, Isospin, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

We report the measurement of direct photons at midrapidity in Au + Au collisions at root s(NN) = 200 GeV. The direct photon signal was extracted for the transverse momentum range of 4 GeV/c < pT < 22 GeV/c, using a statistical method to subtract decay photons from the inclusive photon sample. The direct photon nuclear modification factor R-AA was calculated as a function of p(T) for different Au + Au collision centralities using the measured p + p direct photon spectrum and compared to theoretical predictions. R-AA was found to be consistent with unity for all centralities over the entire measured pT range. Theoretical models that account for modifications of initial direct photon production due to modified parton distribution functions in Au and the different isospin composition of the nuclei predict a modest change of R-AA from unity. They are consistent with the data. Models with compensating effects of the quark-gluon plasma on high-energy photons, such as suppression of jet-fragmentation photons and induced-photon bremsstrahlung from partons traversing the medium, are also consistent with this measurement.

Published
2012

12. Measurement of direct photons in Au+Au collisions at √(s(NN))=200 GeV

Author

S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, A, Al-Jamel, J, Alexander, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, T, Chujo, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, M, Connors, P, Constantin, M, Csanád, T, Csörgő, T, Dahms, K, Das, G, David, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, D E, Fields, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, S-Y, Fung, S, Gadrat, F, Gastineau, M, Germain, A, Glenn, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-Å, Gustafsson, T, Hachiya, A, Hadj Henni, J S, Haggerty, M N, Hagiwara, H, Hamagaki, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, X, He, M, Heffner, T K, Hemmick, J M, Heuser, H, Hiejima, J C, Hill, R, Hobbs, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, M G, Hur, T, Ichihara, H, Iinuma, K, Imai, J, Imrek, M, Inaba, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, T, Kawagishi, A V, Kazantsev, S, Kelly, A, Khanzadeev, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, P J, Kroon, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, M J, Leitch, M A L, Leite, X H, Li, H, Lim, A, Litvinenko, M X, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, H, Masui, F, Matathias, M C, McCain, P L, McGaughey, Y, Miake, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, J T, Mitchell, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, T, Nakamura, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, O O, Omiwade, A, Oskarsson, I, Otterlund, K, Ozawa, R, Pak, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, V, Samsonov, H D, Sato, S, Sato, S, Sawada, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, S, Skutnik, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, J, Tojo, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, van Hecke, J, Velkovska, R, Vértesi, A A, Vinogradov, E, Vznuzdaev, M, Wagner, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, A, Yanovich, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, J, Zimányi, and L, Zolin

Abstract

We report the measurement of direct photons at midrapidity in Au+Au collisions at √(s(NN))=200 GeV. The direct photon signal was extracted for the transverse momentum range of 4 GeV/cp(T)22 GeV/c, using a statistical method to subtract decay photons from the inclusive photon sample. The direct photon nuclear modification factor R(AA) was calculated as a function of p(T) for different Au+Au collision centralities using the measured p+p direct photon spectrum and compared to theoretical predictions. R(AA) was found to be consistent with unity for all centralities over the entire measured p(T) range. Theoretical models that account for modifications of initial direct photon production due to modified parton distribution functions in Au and the different isospin composition of the nuclei predict a modest change of R(AA) from unity. They are consistent with the data. Models with compensating effects of the quark-gluon plasma on high-energy photons, such as suppression of jet-fragmentation photons and induced-photon bremsstrahlung from partons traversing the medium, are also consistent with this measurement.

Published
2012

13. Heavy-quark production inp+pand energy loss and flow of heavy quarks in Au + Au collisions atsNN=200GeV

Author

S. Y. Fung, M. Chiu, Maya Hachiya Shimomura, T. A. Shibata, Y. I. Makdisi, Z. Fraenkel, Steven E. Skutnik, S. Bathe, John Hill, Agneta Oskarsson, V. S. Pantuev, H. A. Torii, Toru Sugitate, L. D. Isenhower, Y. Berdnikov, Y. Akiba, M. Harvey, M. J. Tannenbaum, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, D. Isenhower, A. Toia, L. Mašek, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, Vaclav Vrba, Klaus Johannes Reygers, H. Qu, C. Vale, Junji Tojo, B. S. Chang, Christine Angela Aidala, J. Klay, D. Mukhopadhyay, S. Rembeczki, M. Rosati, François Fleuret, D. Bucher, B. Forestier, I. Ravinovich, Y. Nagata, J. Gosset, J. P. Sullivan, R. Vértesi, K. Okada, B. Sahlmueller, H. En'yo, P. Constantin, Saskia Mioduszewski, S. N. White, S. F. Pate, Anne Marie Sickles, S. Kelly, Hideki Hamagaki, K. Aoki, G. David, F. Matathias, S. S. Ryu, M. J. Leitch, M. Gonin, J. Chiba, N. N. Ajitanand, Mate Csanad, P. Tarján, A. A. Vinogradov, Henrik Tydesjö, K. Nakano, Kensuke Homma, S. Chernichenko, H. Lim, B. Bassalleck, M. Konno, Y. Nakamiya, G. C. Mishra, G. Baksay, M. T. Bjorndal, R. Bennett, Ahmed Al-Jamel, M. Finger, Y. L. Yamaguchi, B. Komkov, Takao Sakaguchi, H. Al-Bataineh, W. E. Sondheim, Norio Saito, Takahiro Nakamura, M. A. L. Leite, C. Klein-Boesing, K. Dehmelt, A. Kiss, D. Kawall, C. L. Woody, Z. Yasin, Henner Buesching, Jiangyong Jia, Y. Goto, O. Zaudtke, A. D. Frawley, T. Tabaru, Jen-Chieh Peng, S. Yokkaichi, P. A. Rukoyatkin, H. Pei, G. R. Young, J. M. Burward-Hoy, H. Pereira, V. I. Kochetkov, Alexei Khanzadeev, J. M. Heuser, T. Ichihara, Osamu Jinnouchi, S. H. Aronson, J. Jin, E. M. Takagui, Marcus Hohlmann, M. Virius, W. Holzmann, C. P. Singh, B. M. Johnson, J. Murata, B. Azmoun, A. Král, M. J. Kweon, Y. Le Bornec, Gerd Joachim Kunde, Matthew G. Reuter, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, Susumu Oda, T. Shohjoh, A. Durum, W. C. Smith, V. Babintsev, K. O. Eyser, K. Fujiwara, C. R. Cleven, C. Haegemann, Y. Inoue, Y. Cobigo, D. Silvermyr, V. Papavassiliou, Sébastien Gadrat, A. Isupov, C. Suire, I. Shein, D. S. Brown, Jan Rak, Xiong Wang, J. G. Boissevain, I. V. Sourikova, Masashi Kaneta, R. Pak, N. Kamihara, X. He, O. O. Omiwade, V. Peresedov, Dong Jo Kim, E. Stenlund, H. Sakata, M. K. Lee, E. H. Kim, L. S. Zolin, David D'Enterria, P. J. Kroon, Dong-Hun Kim, P. D. Barnes, J. E. Frantz, Hiroaki Ohnishi, R. Lacey, J. Sziklai, W. J. Park, Alberto Baldisseri, R. Armendariz, C. Pinkenburg, A. Yanovich, M. Oka, S. K. Tuli, R. Granier de Cassagnac, Herve Borel, D. Lynch, A. Adare, M. Naglis, Senta Greene, D. E. Fields, K. Hasuko, B. V. Jacak, Brian Cole, R. P. Pisani, C. L. Silva, R. S. Towell, M. Stepanov, G. Roche, Kazuyoshi Kurita, H. Masui, A. K. Dubey, A. Glenn, O. Dietzsch, E. T. Atomssa, Masayasu Ishihara, Y. J. Mao, S. Kametani, A. Dion, Susumu Sato, I. Garishvili, Akio Kiyomichi, M. Mitrovski, A. Deshpande, M. McCumber, A. K. Purwar, H. Valle, Alexander Milov, I. Nakagawa, H. W. Van Hecke, V. L. Rykov, T. Dahms, A. A. Bickley, A. Drees, N. Grau, J. H. Kang, J. S. Haggerty, T. V. Moukhanova, K. Shoji, J. Kubart, O. Drapier, Frank Ellinghaus, B. E. Norman, Xiao-yan Li, N. Kurihara, S. Takagi, M. Ouchida, Nikolay Tyurin, Y. Watanabe, Atsushi Taketani, K. N. Barish, E. R. Kinney, I. Younus, D. P. Morrison, S. Campbell, E. O'Brien, R. A. Soltz, Julia Velkovska, P. W. Stankus, A. Soldatov, J. Asai, A. Enokizono, M. Wysocki, V. E. Semenov, M. B. Deaton, E. J. Desmond, M. N. Wagner, Y. Fukao, G. S. Kyle, A. Shevel, M. Grosse Perdekamp, Y. Tanaka, N. Willis, James Alexander, K. S. Sim, Tatsuya Chujo, Y. S. Lai, I. Tserruya, M. G. Hur, C. Y. Chi, Tae-Yeon Lee, J. Egdemir, M. Togawa, Yu. Efremenko, V. Singh, T. K. Shea, R. Averbeck, Martin Purschke, T. Hester, Robert F. Hobbs, Byung-Sik Hong, A. Bazilevsky, Y. Kwon, Joakim Nystrand, J. Park, M. L. Brooks, Florian Bauer, Philippe Rosnet, Jason Kamin, F. Gastineau, H. Hiejima, B. Love, Alexandre Lebedev, F. Staley, L. Baksay, K. Das, D. Winter, Charles Maguire, S. Leckey, D. Yu Peressounko, D. M. Lee, Marie Germain, S. P. Stoll, Eva Haslum, B. Lenzi, Shingo Sakai, Josh Moss, Kiyoshi Tanida, Xingguo Li, Debashish Pal, Y. Tsuchimoto, J. L. Drachenberg, S. Sawada, E. P. Hartouni, A. G. Litvinenko, K. Imai, E. Kistenev, Hirohiko Sato, J. Ying, A. Franz, T. L. Thomas, H. Harada, S. S.E. Rosendahl, G. Bunce, D. Kotchetkov, A. Kozlov, R. Seto, S. P. Sorensen, K. Haruna, Dylan Walker, B. Espagnon, V. Dzhordzhadze, S. Afanasiev, A. Morreale, V-N. Tram, I. E. Yushmanov, J. G. Lajoie, A. Churyn, D. Jouan, A. Ster, T. Hachiya, Motoi Inaba, I. J. Choi, A. Kravitz, Ryugo S. Hayano, A. Romana, J. Newby, K. S. Joo, Y. Riabov, Kenta Shigaki, C. A. Ogilvie, T. K. Hemmick, D. Hornback, M. Nguyen, A. Taranenko, Yasuo Miake, Kazushi Miki, S. Esumi, D. Sharma, A. S. Nyanin, L. Kochenda, Rachid Nouicer, T. Kawagishi, S. Belikov, L. Aphecetche, Minghui Liu, M. Heffner, C. Silvestre, Kenneth Francis Read, A. V. Kazantsev, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, L. Tomášek, P. Mikeš, Andry Malala Rakotozafindrabe, T. C. Awes, Kyoichiro Ozawa, T. Liška, Jun Kikuchi, Johannes Peter Wessels, Tadaaki Isobe, J. S. Chai, P. L. McGaughey, Rushan Han, M. N. Hagiwara, M. Issah, C. Zhang, J. Zimányi, S. Butsyk, Vladimir Samsonov, M. D. Malik, I. Otterlund, E. Vznuzdaev, Viktor Riabov, W. A. Zajc, Tamas Ferenc Csorgo, V. Baublis, A. Hadj Henni, J. L. Nagle, A. Denisov, V. Cianciolo, Sergey Fokin, T. Horaguchi, K. Boyle, H. Å Gustafsson, Wei Xie, S. Batsouli, H. Iinuma, M. C. McCain, A. P.T. Palounek, H. Kanou, Taku Gunji, H. Gong, J. Seele, F. Kajihara, H. Delagrange, S. Zhou, Y. S. Kim, J. L. Charvet, T. E. Miller, P. Chung, M. Holmes, and W. S. Emam

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Electron, 01 natural sciences, 7. Clean energy, Spectral line, Nuclear physics, Flow (mathematics), 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Anisotropy, Relativistic Heavy Ion Collider
Abstract

Transverse momentum spectra of electrons (p(T)(e)) from semileptonic weak decays of heavy-flavor mesons in the range of 0.3 < p(T)(e) < 9.0 GeV/c have been measured at midrapidity (|y| < 0.35) by the PHENIX experiment at the Relativistic Heavy Ion Collider in p + p and Au + Au collisions at root s(NN) = 200 GeV. In addition, the azimuthal anisotropy parameter v(2) has been measured for 0.3 < p(T)(e) < 5.0 GeV/c in Au + Au collisions. The substantial modification in the p(T)(e) spectra in Au + Au compared with p + p collisions as well as the nonzero v(2) indicate substantial interactions and flow of heavy quarks in traversing the produced medium. Comparisons of these observables with detailed theoretical calculations can be used to identify the nature of these interactions and to quantify their extent.

Published
2011

14. Nuclear modification factors ofϕmesons ind+Au,Cu+Cu, andAu+Aucollisions atsNN=200 GeV

Author

Aaron Angerami, J. M. Burward-Hoy, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Hongfang Liu, D. E. Fields, W. C. Smith, H. A. Gustafsson, C. Zhang, B. V. Jacak, P. Ružička, Viktor Riabov, Sergey Fokin, T. Horaguchi, M. McCumber, A. K. Purwar, M. K. Lee, J. L. Drachenberg, R. A. Soltz, H. Borel, Gary Grim, S. Batsouli, K. V. Dharmawardane, M. Grosse Perdekamp, J. Hanks, Prashant Shukla, S. F. Pate, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, M. E. Connors, K. A. Drees, J. Gosset, A. V. Kazantsev, S. Belikov, K. S. Joo, J. L. Charvet, H. Iinuma, M. C. McCain, A. P.T. Palounek, Ke. Nakamura, V. S. Pantuev, Sung Keun Park, S. Kelly, N. N. Ajitanand, J. P. Sullivan, K. Sakashita, D. Watanabe, M. D. Malik, T. E. Miller, K. Tanida, E. Vznuzdaev, Takahiro Nakamura, T. Jones, J. Hamblen, Peter Christiansen, S. P. Sorensen, K. Watanabe, M. Rosati, L. Tomášek, R. Tanabe, H. Al-Bataineh, K. Das, A. Enokizono, Dylan Walker, K. Shoji, D. Winter, D. Yu Peressounko, Y. Fukao, Susumu Oda, A. Shevel, P. Mikeš, P. Tarján, P. Chung, D. Kotov, N. Apadula, R. Vértesi, K. Okada, M. Holmes, E. P. Hartouni, B. Sahlmueller, T. Shohjoh, A. Durum, X. Jiang, S. Yokkaichi, H. En'yo, S. V. Afanasiev, Catherine Micaela Silvestre, L. Aphecetche, P. W. Stankus, P. Constantin, M. J. Leitch, W. S. Emam, A. Datta, D. S. Brown, K. Yamaura, H. Kanou, Y. Ikeda, S. Bathe, J. G. Boissevain, T. Hester, J. Egdemir, Taku Gunji, H. Gong, J. Seele, Masashi Kaneta, T. Tabaru, Senta Greene, F. Kajihara, Agneta Oskarsson, A. Dion, M. I. Nagy, T. C. Awes, H. Delagrange, S. Esumi, Kyoichiro Ozawa, T. Liška, C. Pinkenburg, A. T. Basye, Johannes Peter Wessels, J. S. Bok, O. Chvala, Jun Kikuchi, C. R. Cleven, B. E. Norman, B. Fadem, E. O'Brien, D. Sharma, R. Ichimiya, Jason Kamin, Rushan Han, M. N. Hagiwara, Y. Berdnikov, C. Haegemann, Y. Inoue, A. Hadj Henni, V. Papavassiliou, Sébastien Gadrat, Xiao-yan Li, T. Murakami, M. Stepanov, Robert F. Hobbs, G. Roche, S. Kametani, S. Butsyk, S. Zhou, A. A. Vinogradov, Henrik Tydesjö, Y. Akiba, B. Azmoun, Y. J. Mao, M. Mishra, A. Král, M. J. Kweon, J. H. Kang, Beomkyu Kim, J. S. Haggerty, P. J. Kroon, Wei Xie, Vladimir Samsonov, I. Otterlund, A. Baldisseri, A. Romana, S. Nagamiya, Kazuhiro Tanaka, S. P. Stoll, T. Kempel, S. D. Rolnick, Masamichi Ishihara, Y. Le Bornec, Y. S. Kim, Dong-Hun Kim, S. W. Nam, Vaclav Vrba, Minghui Liu, B. Komkov, Klaus Johannes Reygers, Jiangyong Jia, Y. Goto, M. Chiu, Ajit Kumar Mohanty, Debashish Pal, M. Heffner, Kenneth Francis Read, Tamas Ferenc Csorgo, T. A. Shibata, C. L. Silva, T. Sato, T. Ichihara, Y. S. Lai, J. L. Nagle, J. Murata, M. Oka, S. Sawada, Tadaaki Isobe, J. Ying, A. Franz, Steven E. Skutnik, K. S. Lee, J. S. Chai, Margaret Harvey, V-N. Tram, N. Grau, Norio Saito, Tsutomu Mibe, D. Isenhower, A. Toia, S. S.E. Rosendahl, G. Bunce, M. Slunečka, P. L. McGaughey, B. Espagnon, P. Liebing, Tae-Yeon Lee, M. A. L. Leite, J. G. Lajoie, L. Mašek, Martin Purschke, F. Gastineau, D. Kotchetkov, H. Qu, Alexei Khanzadeev, A. Morreale, Z. Fraenkel, A. Kiss, Motoi Inaba, T. Hachiya, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, R. K. Choudhury, A. Churyn, R. Belmont, J. S. Kapustinsky, R. M. Wright, Mate Csanad, M. Mitrovski, V. Babintsev, Z. Yasin, Henner Buesching, E. Stenlund, D. Jouan, G. S. Kyle, Steve Edwards, N. Willis, J. B. Choi, H. Sakata, James Alexander, O. Dietzsch, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, M. Nihashi, E. T. Atomssa, H. Valle, I. J. Choi, A. Kravitz, Philippe Rosnet, J. M. Heuser, Marcus Hohlmann, Alexandre Lebedev, David D'Enterria, Dipanwita Dutta, D. M. Lee, C. A. Ogilvie, Julia Velkovska, R. P. Pisani, M. Gonin, Maya Hachiya Shimomura, M. K. Dayananda, L. A. Linden Levy, T. K. Hemmick, M. Wysocki, J. M. Durham, Nikolay Tyurin, J. H. Bhom, Yasuo Miake, K. O. Eyser, K. Fujiwara, M. N. Wagner, Y. L. Yamaguchi, Y. I. Makdisi, T. V. Moukhanova, L. Kochenda, M. Issah, Dmitry Blau, A. Sukhanov, M. B. Deaton, K. Kurita, H. Pereira, H. W. Van Hecke, Y. Morino, T. Kawagishi, E. J. Desmond, R. Pak, Hiroaki Ohnishi, K. B. Lee, Y. Tanaka, E. Mannel, M. Togawa, E. Vazquez-Zambrano, T. K. Shea, J. Park, Florian Bauer, N. Kamihara, M. J. Tannenbaum, A. Rakotozafindrabe, Aram Kim, M. Kasai, R. Armendariz, Y. Tsuchimoto, Y. Iwanaga, H. Torii, I. E. Yushmanov, C. Oakley, A. Drees, Eun-Hee Kim, H. J. Moon, L. Baksay, J. Kubart, Charles Maguire, S. Leckey, D. Mukhopadhyay, S. Rembeczki, D. Bucher, Josh Moss, D. Kawall, J. Chiba, Alice Mignerey, E. Kistenev, H. Themann, L. D'Orazio, V. I. Kochetkov, G. C. Mishra, P. Lichtenwalner, Takao Sakaguchi, M. Kurosawa, Y. Nakamiya, D. Lynch, C. Klein-Boesing, Gerd Joachim Kunde, H. Harada, I. Shein, A. D. Frawley, H. Pei, G. Baksay, Saskia Mioduszewski, M. T. Bjorndal, K. Sedgwick, S. Huang, S. H. Aronson, S. Dairaku, A. Deshpande, W. Holzmann, O. Zaudtke, Y. J. Kim, J. T. Mitchell, Y. Watanabe, R. Seidl, I. Younus, A. Soldatov, Vladislav Manko, M. Naglis, J. Jin, M. Virius, Susumu Sato, E. M. Takagui, F. Staley, C. Vale, B. S. Chang, R. S. Towell, Christine Angela Aidala, J. Klay, N. Borggren, C. H. Chen, I. Garishvili, Akio Kiyomichi, F. Wei, F. Matathias, Y. Cobigo, Kensuke Homma, E. Richardson, X. He, O. O. Omiwade, S. Chernichenko, J. E. Frantz, Jongmin Lee, H. Lim, Y. Aramaki, V. Peresedov, B. Bassalleck, N. Kurihara, J. Koster, M. Konno, H. Masui, A. K. Dubey, A. Glenn, A. Taketani, A. A. Bickley, D. S. Jumper, B. Love, Marie Germain, V. L. Rykov, T. Dahms, M. G. Hur, C. Y. Chi, A. G. Litvinenko, I. Ravinovich, A. Kozlov, Y. Nagata, R. Seto, M. Bai, K. Haruna, S. S. Ryu, C. Baumann, V. Dzhordzhadze, I. Danchev, S. Takagi, K. N. Barish, Zhiying You, R. Bennett, M. Kawashima, K. S. Sim, C. P. Singh, B. M. Johnson, Ahmed Al-Jamel, M. Finger, S. Sano, Junji Tojo, Y. Kwon, R. J. Petti, R. Yang, H. Hiejima, M. Ouchida, N. Means, A. Isupov, C. Suire, J. Sziklai, I. Tserruya, M. L. Brooks, S. Taneja, Yu. Efremenko, J. Asai, Brian Cole, V. Singh, K. Imai, Shingo Sakai, Hirohiko Sato, S. K. Tuli, Eunja Kim, T. L. Thomas, K. Dehmelt, Jen-Chieh Peng, S. Y. Fung, K. Karatsu, Inkyu Park, Xiong Wang, Z. Conesa del Valle, Anne Marie Sickles, Dong Jo Kim, B. Meredith, A. Veicht, Ryugo S. Hayano, Alexander Milov, I. Nakagawa, T. Engelmore, O. Drapier, John Hill, Frank Ellinghaus, E. R. Kinney, Y. Riabov, D. P. Morrison, S. Campbell, V. E. Semenov, J. Zimányi, Kenta Shigaki, G. R. Young, Tatsuya Chujo, Toru Sugitate, M. Nguyen, L. D. Isenhower, Y. Onuki, A. Ster, D. Roach, K. M. Kijima, A. S. Nyanin, Jan Rak, J. Newby, Rachid Nouicer, Xingguo Li, M. Proissl, R. Lacey, D. Hornback, François Fleuret, B. Forestier, A. Taranenko, Kazushi Miki, Brajesh K. Singh, R. Granier de Cassagnac, A. Adare, C. L. Woody, A. Berdnikov, K. Hasuko, S. Tarafdar, S. N. White, A. Caringi, Joakim Nystrand, Eva Haslum, B. Lenzi, Deepa Thomas, I. V. Sourikova, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, Osamu Jinnouchi, Matthew G. Reuter, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, Christopher Rosen, P. D. Barnes, and A. Yanovich

Subjects
Physics, Nuclear and High Energy Physics, Valence (chemistry), Meson, Proton, 010308 nuclear & particles physics, Hadron, Phi meson, 01 natural sciences, 7. Clean energy, Baryon, Nuclear physics, Antiproton, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has performed systematic measurements of phi meson production in the K+K- decay channel at midrapidity in p + p, d + Au, Cu + Cu, and Au + Au collisions at root s(NN) = 200 GeV. Results are presented on the phi invariant yield and the nuclear modification factor R-AA for Au + Au and Cu + Cu, and R-dA for d + Au collisions, studied as a function of transverse momentum (1 < p(T) < 7 GeV/c) and centrality. In central and midcentral Au + Au collisions, the R-AA of phi exhibits a suppression relative to expectations from binary scaled p + p results. The amount of suppression is smaller than that of the pi(0) and the. in the intermediate p(T) range (2-5 GeV/c), whereas, at higher p(T), the phi, pi(0), and. show similar suppression. The baryon (proton and antiproton) excess observed in central Au + Au collisions at intermediate p(T) is not observed for the phi meson despite the similar masses of the proton and the phi. This suggests that the excess is linked to the number of valence quarks in the hadron rather than its mass. The difference gradually disappears with decreasing centrality, and, for peripheral collisions, the R-AA values for both particle species are consistent with binary scaling. Cu + Cu collisions show the same yield and suppression as Au + Au collisions for the same number of N-part. The R-dA of phi shows no evidence for cold nuclear effects within uncertainties.

Published
2011

15. Enhanced Production of Direct Photons inAu+AuCollisions atsNN=200 GeVand Implications for the Initial Temperature

Author

V. Peresedov, Marisilvia Donadelli, S. Y. Fung, H. Kanou, H. Gong, J. Seele, V. Bumazhnov, M. P. Comets, F. Kajihara, K. Hasuko, J. Rak, Hiroyuki Okada, Joakim Nystrand, D. J. Kim, F. Matathias, H. Masui, A. K. Dubey, E. J. Desmond, Eva Haslum, B. Lenzi, Kensuke Homma, S. Afanasiev, A. Ster, J. Newby, Charles Maguire, S. Leckey, A. A. Bickley, D. Hornback, M. Heffner, A. Taranenko, Kazushi Miki, John Hill, S. Zhou, M. Togawa, S. Chernichenko, Anne Marie Sickles, C. P. Singh, A. Deshpande, H. Lim, B. M. Johnson, Josh Moss, B. Bassalleck, A. Baldisseri, J. Park, Florian Bauer, I. Ravinovich, J. Egdemir, A. Isupov, C. Suire, P. Tarján, L. D. Isenhower, Y. S. Kim, B. Love, Y. Nagata, M. Konno, M. Gonin, J. Sziklai, G. R. Young, K. Shigaki, E. Kistenev, Y. Tsuchimoto, J. L. Charvet, François Fleuret, I. Tserruya, Yu. Efremenko, V. Singh, S. S. Ryu, Rushan Han, M. N. Hagiwara, Jason Kamin, S. P. Stoll, W. A. Zajc, V. Baublis, Brian Cole, Y. Watanabe, B. Forestier, D. E. Fields, J. T. Mitchell, Mate Csanad, I. Younus, V. S. Pantuev, T. E. Miller, R. Vértesi, H. Pereira, B. V. Jacak, H. Harada, M. Mitrovski, Y. L. Yamaguchi, A. G. Litvinenko, R. Bennett, A. Denisov, V. Cianciolo, M. Harvey, J. H. Kang, M. Wysocki, Hirohiko Sato, T. Ichihara, S. Butsyk, P. Chung, R. Seidl, Vladislav Manko, S. S.E. Rosendahl, M. Slunečka, M. McCumber, A. K. Purwar, G. Bunce, Vladimir Samsonov, I. Otterlund, Ahmed Al-Jamel, A. Soldatov, Robert F. Hobbs, S. K. Tuli, M. Finger, Junji Tojo, Matthew G. Reuter, M. Holmes, A. Kozlov, Saskia Mioduszewski, Takahiro Fusayasu, J. Chiba, Senta Greene, K. S. Sim, O. Zaudtke, Y. Kwon, M. Naglis, C. L. Silva, R. Seto, K. Haruna, I. D. Ojha, Alexander Malakhov, ShinIchi Esumi, K. Dehmelt, H. Hiejima, B. Komkov, Tamas Ferenc Csorgo, A. Churyn, D. Jouan, K. Okada, B. Sahlmueller, G. C. Mishra, H. Pei, H. En'yo, Jen-Chieh Peng, B. E. Norman, E. O'Brien, P. Constantin, O. Dietzsch, V. Dzhordzhadze, D. Silvermyr, A. Kiss, L. S. Zolin, W. J. Park, Z. Yasin, C. Vale, S. Takagi, J. L. Drachenberg, J. Jin, E. M. Takagui, T. Horaguchi, M. J. Leitch, K. Imai, Xiong Wang, J. L. Nagle, Osamu Jinnouchi, David D'Enterria, S. P. Sorensen, M. Virius, Dylan Walker, Norio Saito, E. T. Atomssa, Christine Angela Aidala, Masayasu Ishihara, Susumu Sato, J. Klay, H. Borel, Tae-Yeon Lee, Martin Purschke, T. Chujo, N. Grau, K. N. Barish, K. Shoji, P. D. Barnes, A. Yanovich, H. Valle, F. Gastineau, S. Kelly, R. S. Towell, M. A. L. Leite, I. Garishvili, Akio Kiyomichi, S. Batsouli, N. N. Ajitanand, W. S. Emam, Takao Sakaguchi, Y. Mao, J. M. Burward-Hoy, B. Chang, M. Chiu, T. A. Shibata, Debashish Pal, S. Sawada, J. Ying, A. Franz, B. Espagnon, Y. Nakamiya, F. Staley, D. Kawall, K. Das, S. Gadrat, Marcus Hohlmann, M. Grosse Perdekamp, N. Kurihara, Alexander Milov, I. Nakagawa, E. P. Hartouni, E. Stenlund, H. Sakata, C. Klein-Boesing, C. A. Ogilvie, T. K. Hemmick, K. Tanida, S. F. Pate, Julia Velkovska, Takahiro Nakamura, O. Drapier, Frank Ellinghaus, A. D. Frawley, R. Lacey, T. Tabaru, P. W. Stankus, E. R. Kinney, S. N. White, D. P. Morrison, V. I. Kochetkov, Y. Cobigo, W. C. Smith, R. Granier de Cassagnac, M. Rosati, J. G. Lajoie, Susumu Oda, M. G. Hur, C. Y. Chi, G. Baksay, T. Hachiya, A. Adare, S. Campbell, D. Kotchetkov, R. P. Pisani, V. E. Semenov, Nikolay Tyurin, P. Rosnet, J. Zimányi, H. Al-Bataineh, J. Murata, L. Kochenda, T. Shohjoh, K. Ozawa, A. Durum, Steven E. Skutnik, S. H. Aronson, S. Bathe, M. K. Lee, I. J. Choi, A. Morreale, V. Babintsev, J. E. Frantz, M. C. McCain, M. T. Bjorndal, Catherine Micaela Silvestre, A. Kravitz, D. Winter, Hiroaki Ohnishi, D. Isenhower, Y. Akiba, K. Nakano, Gerd Joachim Kunde, W. Holzmann, M. N. Wagner, I. Shein, M. Mishra, A. Toia, E. H. Kim, A. A. Vinogradov, Henrik Tydesjö, T. Kawagishi, D. S. Brown, M. L. Brooks, D. Yu Peressounko, S. Nagamiya, Kazuhiro Tanaka, Maya Hachiya Shimomura, Y. Fukao, A. Shevel, Z. Fraenkel, V. Papavassiliou, Vaclav Vrba, A. Rakotozafindrabe, W. E. Sondheim, A. P.T. Palounek, D. Lynch, H. Qu, R. Pak, L. Mašek, Y. Berdnikov, T. V. Moukhanova, Klaus Johannes Reygers, Y. I. Makdisi, A. Oskarsson, Jiangyong Jia, Y. Goto, I. Yushmanov, T. Gunji, Y. Miake, H. Buesching, P. A. Rukoyatkin, N. Kamihara, S. Fokin, J. P. Wessels, K. O. Eyser, K. Fujiwara, T. C. Awes, S. Belikov, K. S. Joo, K. Aoki, A. Glenn, G. David, R. Armendariz, Xiao-yan Li, T. Hester, Xingguo Li, V. L. Rykov, T. Dahms, Kazuyoshi Kurita, H. A. Gustafsson, M. B. Deaton, G. S. Kyle, A. Drees, M. J. Tannenbaum, N. Willis, James Alexander, H. Torii, H. W. Van Hecke, C. R. Cleven, C. Haegemann, Y. Inoue, J. Kubart, R. Soltz, Y. Tanaka, R. Averbeck, M. Inaba, C. Zhang, Byung-Sik Hong, A. Bazilevsky, T. K. Shea, P. J. Kroon, D. Mukhopadhyay, S. Rembeczki, Dong-Hun Kim, D. Bucher, A. Khanzadeev, Alexandre Lebedev, D. Sharma, D. M. Lee, L. Baksay, V-N. Tram, M. Germain, Viktor Riabov, B. Azmoun, A. Král, M. J. Kweon, Y. Le Bornec, M. Oka, A. Dion, Atsushi Taketani, A. Enokizono, T. L. Thomas, Ryugo S. Hayano, J. Gosset, J. P. Sullivan, Y. Riabov, S. Yokkaichi, J. M. Heuser, M. Nguyen, H. Delagrange, J. G. Boissevain, Masashi Kaneta, A. S. Nyanin, C. Pinkenburg, M. Stepanov, G. Roche, S. Kametani, J. S. Haggerty, A. Romana, Y. S. Lai, M. Ouchida, J. Asai, Shingo Sakai, C. L. Woody, Minghui Liu, T. Sugitate, Kenneth Francis Read, I. V. Sourikova, Tadaaki Isobe, J. S. Chai, H. Hamagaki, P. L. McGaughey, A. V. Kazantsev, L. Tomášek, P. Mikeš, T. Liška, Jun Kikuchi, L. Aphecetche, M. Issah, M. D. Malik, E. Vznuzdaev, A. Hadj Henni, K. Boyle, Wei Xie, X. He, and O. O. Omiwade

Subjects
Physics, Quantum chromodynamics, Antiparticle, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Elementary particle, 01 natural sciences, 7. Clean energy, Nuclear physics, Internal conversion, Pair production, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Lepton
Abstract

The production of e(+)e(-) pairs for m(e+e-) < 0.3 GeV/c(2) and 1< p(T) < 5 GeV/c is measured in p + p and Au + Au collisions at root s(NN) = 200 GeV. An enhanced yield above hadronic sources is observed. Treating the excess as photon internal conversions, the invariant yield of direct photons is deduced. In central Au + Au collisions, the excess of the direct photon yield over p + p is exponential in transverse momentum, with an inverse slope T = 221 +/- 19(stat) +/- 19(syst) MeV. Hydrodynamical models with initial temperatures ranging from T-init similar to 300-600 MeV at times of similar to 0.6-0.15 fm/c after the collision are in qualitative agreement with the data. Lattice QCD predicts a phase transition to quark gluon plasma at similar to 170 MeV.

Published
2010

16. Detailed measurement of thee+e−pair continuum inp+pandAu+Aucollisions atsNN=200GeV and implications for direct photon production

Author

Tae-Yeon Lee, Martin Purschke, F. Gastineau, Tadaaki Isobe, J. S. Chai, C. Silvestre, Anne Marie Sickles, Y. Fukao, A. Shevel, P. L. McGaughey, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, O. Dietzsch, E. T. Atomssa, H. Valle, Julia Velkovska, T. Hester, D. Kotchetkov, A. Kiss, Andry Malala Rakotozafindrabe, G. R. Young, Z. Yasin, Henner Buesching, D. Kawall, K. Tanida, G. S. Kyle, N. Willis, James Alexander, A. Morreale, M. Rosati, A. A. Vinogradov, Henrik Tydesjö, R. Vértesi, Jiangyong Jia, Y. Goto, T. Ichihara, M. Ouchida, R. Averbeck, J. Chiba, Z. Fraenkel, Byung-Sik Hong, J. Asai, Matthew G. Reuter, Takahiro Fusayasu, Marcus Hohlmann, Jan Rak, I. D. Ojha, Alexander Malakhov, P. Tarján, A. Bazilevsky, G. C. Mishra, X. He, Philippe Rosnet, I. Ravinovich, V-N. Tram, Charles Maguire, S. Leckey, J. Gosset, J. M. Burward-Hoy, S. Kelly, J. P. Sullivan, Minghui Liu, R. Lacey, D. Silvermyr, V. I. Kochetkov, Shingo Sakai, R. Granier de Cassagnac, Takao Sakaguchi, Alexandre Lebedev, K. O. Eyser, K. Fujiwara, O. O. Omiwade, C. Klein-Boesing, C. L. Woody, S. Belikov, K. S. Joo, C. P. Singh, R. Pak, A. Adare, Josh Moss, Y. Nagata, L. S. Zolin, N. Kamihara, D. M. Lee, Kenneth Francis Read, A. D. Frawley, B. M. Johnson, V. Peresedov, W. J. Park, T. Tabaru, Y. Nakamiya, E. Kistenev, Motoi Inaba, K. Hasuko, N. N. Ajitanand, J. Murata, R. Armendariz, A. Isupov, C. Suire, W. C. Smith, Rushan Han, M. N. Hagiwara, S. H. Aronson, Kazuyoshi Kurita, P. D. Barnes, A. Yanovich, Hiroyuki Okada, S. S. Ryu, A. V. Kazantsev, I. V. Sourikova, T. L. Thomas, J. Sziklai, M. K. Lee, S. Yokkaichi, G. Baksay, A. Drees, Brian Cole, N. Grau, H. Harada, Alexei Khanzadeev, W. Holzmann, J. M. Heuser, Joakim Nystrand, Eva Haslum, B. Lenzi, J. Kubart, Senta Greene, R. S. Towell, M. T. Bjorndal, Ryugo S. Hayano, S. Butsyk, Y. L. Yamaguchi, Gerd Joachim Kunde, H. W. Van Hecke, Y. Riabov, I. Shein, I. Garishvili, Akio Kiyomichi, L. Aphecetche, D. Sharma, M. B. Deaton, E. Stenlund, Takahiro Nakamura, H. Masui, A. K. Dubey, A. A. Bickley, Vladimir Samsonov, I. Otterlund, Maya Hachiya Shimomura, Mate Csanad, M. Gonin, Kenta Shigaki, S. N. White, H. Sakata, Y. I. Makdisi, P. Mikeš, B. Komkov, M. Nguyen, K. S. Sim, B. Azmoun, K. Shoji, B. Love, B. E. Norman, A. Král, M. J. Kweon, J. G. Boissevain, S. Afanasiev, A. S. Nyanin, N. Kurihara, Rachid Nouicer, Norio Saito, Y. Tanaka, Y. Kwon, M. A. L. Leite, K. Das, A. Ster, H. Hiejima, L. Tomášek, C. A. Ogilvie, Marie Germain, V. S. Pantuev, E. O'Brien, Masashi Kaneta, R. A. Soltz, Y. Le Bornec, J. Newby, Tamas Ferenc Csorgo, T. K. Shea, S. Bathe, E. P. Hartouni, Agneta Oskarsson, P. W. Stankus, T. K. Hemmick, A. G. Litvinenko, M. Harvey, Yasuo Miake, M. G. Hur, C. Y. Chi, Susumu Oda, J. L. Nagle, M. Oka, K. Imai, Alberto Baldisseri, A. Deshpande, Y. Berdnikov, M. Grosse Perdekamp, Y. Akiba, Junji Tojo, M. J. Tannenbaum, T. C. Awes, Kyoichiro Ozawa, T. Liška, Jun Kikuchi, M. Mishra, C. Pinkenburg, F. Matathias, S. Nagamiya, T. Shohjoh, R. Bennett, Kazuhiro Tanaka, Kensuke Homma, A. Dion, F. Staley, L. Baksay, V. Babintsev, L. Kochenda, T. V. Moukhanova, D. Hornback, A. Kozlov, Johannes Peter Wessels, Ahmed Al-Jamel, A. Durum, Vaclav Vrba, Klaus Johannes Reygers, R. Seto, K. Haruna, D. Mukhopadhyay, E. H. Kim, S. Rembeczki, Saskia Mioduszewski, M. Heffner, Atsushi Taketani, T. Kawagishi, A. Enokizono, K. Okada, H. Pereira, B. Sahlmueller, S. Chernichenko, M. Stepanov, G. Roche, E. J. Desmond, M. Finger, Y. J. Mao, S. Kametani, K. Nakano, H. Lim, A. Taranenko, H. En'yo, David D'Enterria, A. Hadj Henni, V. Dzhordzhadze, J. Egdemir, P. Constantin, D. Bucher, M. J. Leitch, B. Bassalleck, M. Togawa, S. Takagi, J. H. Kang, J. S. Haggerty, D. S. Brown, Kazushi Miki, Y. Watanabe, Jason Kamin, J. Jin, J. Park, E. M. Takagui, S. P. Stoll, Xiao-yan Li, J. E. Frantz, M. Konno, D. Winter, D. Yu Peressounko, Florian Bauer, K. Boyle, K. N. Barish, A. Romana, W. E. Sondheim, S. S.E. Rosendahl, G. Bunce, I. Younus, Wei Xie, J. T. Mitchell, C. R. Cleven, R. P. Pisani, Y. Tsuchimoto, A. Churyn, R. Seidl, I. E. Yushmanov, Herve Borel, D. Lynch, Vladislav Manko, A. Soldatov, C. Haegemann, Y. Inoue, M. Slunečka, D. Jouan, M. L. Brooks, Y. S. Lai, A. Glenn, P. A. Rukoyatkin, V. L. Rykov, T. Dahms, M. Naglis, D. E. Fields, C. L. Silva, Nikolay Tyurin, P. J. Kroon, B. V. Jacak, M. N. Wagner, C. Vale, B. S. Chang, Dong-Hun Kim, Christine Angela Aidala, S. Y. Fung, Masayasu Ishihara, J. Klay, J. L. Drachenberg, M. Issah, Susumu Sato, M. D. Malik, E. Vznuzdaev, O. Zaudtke, M. Virius, M. McCumber, A. K. Purwar, S. P. Sorensen, Steven E. Skutnik, Y. Cobigo, John Hill, Dylan Walker, H. A. Torii, H. Qu, Toru Sugitate, S. Esumi, W. A. Zajc, Hideki Hamagaki, K. Aoki, L. D. Isenhower, V. Baublis, J. G. Lajoie, A. Denisov, T. Hachiya, G. David, I. J. Choi, A. Kravitz, Hiroaki Ohnishi, V. Cianciolo, Sergey Fokin, T. Horaguchi, S. Batsouli, M. C. McCain, A. P.T. Palounek, Xingguo Li, François Fleuret, B. Forestier, H. A. Gustafsson, C. Zhang, Viktor Riabov, I. Tserruya, Yu. Efremenko, V. Singh, Hirohiko Sato, S. K. Tuli, Alexander Milov, I. Nakagawa, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, S. Campbell, V. E. Semenov, J. Zimányi, Tatsuya Chujo, K. Dehmelt, Jen-Chieh Peng, Xiong Wang, Dong Jo Kim, Osamu Jinnouchi, S. F. Pate, H. Al-Bataineh, H. Kanou, V. Papavassiliou, Taku Gunji, H. Gong, J. Seele, Sébastien Gadrat, Robert F. Hobbs, F. Kajihara, H. Delagrange, Debashish Pal, S. Sawada, J. Ying, A. Franz, B. Espagnon, M. Mitrovski, S. Zhou, M. Wysocki, Y. S. Kim, M. Chiu, T. A. Shibata, D. Isenhower, A. Toia, L. Mašek, J. L. Charvet, T. E. Miller, P. Chung, M. Holmes, W. S. Emam, and H. Pei

Subjects
Physics, Nuclear and High Energy Physics, Antiparticle, Meson, 010308 nuclear & particles physics, Hadron, Elementary particle, Quarkonium, 01 natural sciences, Nuclear physics, Antimatter, 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Lepton
Abstract

PHENIX has measured the e(+)e(-) pair continuum in root s(NN) = 200 GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. The e(+)e(-) yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate-mass region, between the masses of the phi and the J/psi meson, the yield is consistent with expectations from correlated c (c) over bar production, although other mechanisms are not ruled out. In the low-mass region, below the phi, the p+p inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of 4.7 +/- 0.4(stat) +/- 1.5(syst) +/- 0.9(model). At low mass (m(ee) < 0.3 GeV/c(2)) and high p(T) (1 < p(T) < 5 GeV/c) an enhanced e(+)e(-) pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the p+p is exponential in p(T), with inverse slope T = 221 +/- 19(stat) +/- 19(syst) MeV. Hydrodynamical models with initial temperatures ranging from T-init similar or equal to 300-600 MeV at times of 0.6-0.15 fm/c after the collision are in qualitative agreement with the direct photon data in Au+Au. For low p(T) < 1 GeV/c the low-mass region shows a further significant enhancement that increases with centrality and has an inverse slope of T similar or equal to 100 MeV. Theoretical models underpredict the low-mass, low-p(T) enhancement.

Published
2010

17. High-pT π0production with respect to the reaction plane inAu+Aucollisions atsNN=200GeV

Author

Youngil Kwon, J. Egdemir, Taku Gunji, F. Kajihara, Tadaaki Isobe, J. S. Chai, S. P. Stoll, H. Delagrange, E. J. Desmond, K. Hasuko, S. S.E. Rosendahl, D. E. Fields, G. Bunce, K. Das, P. L. McGaughey, Hiroyuki Okada, E. P. Hartouni, B. V. Jacak, Y. S. Kim, Joakim Nystrand, M. Togawa, Eva Haslum, J. Park, Florian Bauer, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, L. Kochenda, A. K. Purwar, D. Jouan, T. Kawagishi, G. S. Kyle, A. V. Kazantsev, M. Chiu, T. A. Shibata, N. Willis, James Alexander, C. R. Cleven, R. Averbeck, Byung-Sik Hong, T. Ichihara, Matthew G. Reuter, N. Kamihara, S. Butsyk, Vladimir Samsonov, A. Bazilevsky, S. Afanasiev, F. Matathias, A. Ster, R. Armendariz, S. Takagi, Kazuyoshi Kurita, A. Drees, Philippe Rosnet, I. D. Ojha, D. Isenhower, Alexander Malakhov, P. J. Kroon, J. Newby, V-N. Tram, Alexandre Lebedev, V. S. Pantuev, L. Aphecetche, K. N. Barish, P. Tarján, T. L. Thomas, D. Silvermyr, M. Gonin, L. S. Zolin, Y. Tsuchimoto, S. Kelly, D. M. Lee, Yoichiro Fukao, N. N. Ajitanand, S. Kametani, W. J. Park, Kensuke Homma, M. Rosati, M. Heffner, Ryugo S. Hayano, Tamas Ferenc Csorgo, M. Harvey, T. C. Awes, Kyoichiro Ozawa, Junji Tojo, Motoi Inaba, S. Esumi, J. L. Nagle, Takahiro Nakamura, J. H. Kang, T. E. Miller, A. Taranenko, A. Enokizono, Jen-Chieh Peng, P. D. Barnes, A. Yanovich, N. Grau, K. Shoji, E. H. Kim, Y. Riabov, Kenta Shigaki, I. E. Yushmanov, Maya Hachiya Shimomura, Johannes Peter Wessels, J. S. Haggerty, A. Romana, W. A. Zajc, M. Wysocki, M. Holmes, T. Shohjoh, A. Durum, H. Pereira, S. Y. Fung, M. Nguyen, R. Vértesi, M. L. Brooks, A. S. Nyanin, K. Okada, K. S. Sim, Y. Watanabe, A. Hadj Henni, S. Chernichenko, H. Lim, V. Baublis, John Hill, P. W. Stankus, H. W. Van Hecke, A. Denisov, V. Cianciolo, J. E. Frantz, B. Bassalleck, A. A. Vinogradov, Henrik Tydesjö, D. S. Brown, Minghui Liu, Robert F. Hobbs, B. Sahlmueller, Y. I. Makdisi, Dong Jo Kim, V. Bumazhnov, M. P. Comets, K. Boyle, Sergey Fokin, Anders Nils Erik Oskarsson, H. En'yo, P. Constantin, M. Konno, H. A. Torii, Osamu Jinnouchi, Wei Xie, Marie Germain, Jiangyong Jia, Y. Goto, M. J. Leitch, Toru Sugitate, A. Kiss, Kenneth Francis Read, L. D. Isenhower, T. Horaguchi, Henner Buesching, Senta Greene, A. G. Litvinenko, J. L. Drachenberg, H. Hiejima, B. Komkov, Steven E. Skutnik, Hans-Åke Gustafsson, Martin Purschke, J. M. Burward-Hoy, Debashish Pal, J. Gosset, B. E. Norman, Norio Saito, J. P. Sullivan, S. Sawada, E. O'Brien, Alexander Milov, M. A. L. Leite, A. Franz, R. A. Soltz, A. Kozlov, F. Gastineau, Shingo Sakai, K. Imai, H. Qu, M. N. Hagiwara, Herve Borel, R. Seto, K. Haruna, W. C. Smith, S. Bathe, C. L. Woody, S. P. Sorensen, François Fleuret, M. Issah, O. Drapier, Hideki Hamagaki, K. Aoki, G. David, M. Grosse Perdekamp, M. J. Tannenbaum, B. Forestier, Y. Berdnikov, V. Babintsev, M. D. Malik, B. Espagnon, Y. Akiba, S. Yokkaichi, V. Dzhordzhadze, M. T. Bjorndal, A. Glenn, J. M. Heuser, S. Nagamiya, Kazuhiro Tanaka, E. Vznuzdaev, X. He, E. R. Kinney, Klaus Johannes Reygers, D. P. Morrison, O. O. Omiwade, M. K. Lee, Anne Marie Sickles, S. N. White, S. Campbell, S. F. Pate, O. Dietzsch, V. Peresedov, J. G. Boissevain, Masashi Kaneta, V. L. Rykov, T. Dahms, I. V. Sourikova, H. Valle, C. Zhang, V. E. Semenov, D. Winter, D. Yu Peressounko, Alexei Khanzadeev, Julia Velkovska, X. R. Wang, D. Mukhopadhyay, G. R. Young, J. Zimányi, C. Pinkenburg, J. T. Mitchell, H. Masui, A. K. Dubey, J. G. Lajoie, W. E. Sondheim, D. Kotchetkov, Tatsuya Chujo, T. Hachiya, O. Zaudtke, D. Bucher, P. A. Rukoyatkin, E. Stenlund, Vladislav Manko, I. Tserruya, M. Stepanov, G. Roche, Yu. Efremenko, Jan Rak, R. Lacey, Ingvar Otterlund, R. Granier de Cassagnac, J. Chiba, V. Papavassiliou, Sébastien Gadrat, V. Singh, I. J. Choi, Hiroaki Ohnishi, C. Vale, Viktor Riabov, Christine Angela Aidala, G. C. Mishra, Z. Fraenkel, Takao Sakaguchi, C. Klein-Boesing, Y. Cobigo, I. Ravinovich, A. D. Frawley, T. Tabaru, Y. Nagata, S. Batsouli, S. H. Aronson, W. Holzmann, S. S. Ryu, T. V. Moukhanova, R. Bennett, Hirohiko Sato, S. K. Tuli, Ahmed Al-Jamel, Xingguo Li, B. Azmoun, M. J. Kweon, M. C. McCain, A. P.T. Palounek, Y. Le Bornec, A. Dion, Atsushi Taketani, S. Belikov, K. S. Joo, H. Pei, D. Sharma, Mate Csanad, David D'Enterria, R. P. Pisani, Nikolay Tyurin, M. N. Wagner, Saskia Mioduszewski, J. Jin, E. M. Takagui, C. P. Singh, B. M. Johnson, A. Isupov, C. Suire, J. Sziklai, Brian Cole, Charles Maguire, S. Leckey, R. S. Towell, Josh Moss, Akio Kiyomichi, E. Kistenev, H. Harada, N. Kurihara, M. G. Hur, C. Y. Chi, Y. Tanaka, T. K. Shea, M. Naglis, C. L. Silva, Masayasu Ishihara, F. Staley, Susumu Sato, A. Deshpande, I. Younus, A. Soldatov, K. Tanida, V. I. Kochetkov, J. Murata, Gerd Joachim Kunde, I. Shein, and Alberto Baldisseri

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Plane (geometry), Elliptic flow, Parton, 01 natural sciences, Azimuth, Nuclear physics, Pion, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Jet quenching
Abstract

Measurements of the azimuthal anisotropy of high-p(T) neutral pion (pi(0)) production in Au+Au collisions at s(NN)=200 GeV by the PHENIX experiment are presented. The data included in this article were collected during the 2004 Relativistic Heavy Ion Collider running period and represent approximately an order of magnitude increase in the number of analyzed events relative to previously published results. Azimuthal angle distributions of pi(0) mesons detected in the PHENIX electromagnetic calorimeters are measured relative to the reaction plane determined event-by-event using the forward and backward beam-beam counters. Amplitudes of the second Fourier component (v(2)) of the angular distributions are presented as a function of pi(0) transverse momentum (p(T)) for different bins in collision centrality. Measured reaction plane dependent pi(0) yields are used to determine the azimuthal dependence of the pi(0) suppression as a function of p(T), R-AA(Delta phi,p(T)). A jet-quenching motivated geometric analysis is presented that attempts to simultaneously describe the centrality dependence and reaction plane angle dependence of the pi(0) suppression in terms of the path lengths of hypothetical parent partons in the medium. This set of results allows for a detailed examination of the influence of geometry in the collision region and of the interplay between collective flow and jet-quenching effects along the azimuthal axis.

Published
2009

18. Charged Kaon Interferometric Probes of Space-Time Evolution inAu+AuCollisions atsNN=200 GeV

Author

S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, A. Al-Jamel, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, R. Bennett, Y. Berdnikov, M. T. Bjorndal, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, D. S. Brown, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, S. Campbell, J.-S. Chai, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, T. Chujo, V. Cianciolo, C. R. Cleven, Y. Cobigo, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgő, T. Dahms, K. Das, G. David, H. Delagrange, A. Denisov, D. d’Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, J. L. Drachenberg, O. Drapier, A. Drees, A. K. Dubey, A. Durum, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, A. Enokizono, H. En’yo, B. Espagnon, S. Esumi, D. E. Fields, F. Fleuret, S. L. Fokin, B. Forestier, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, S.-Y. Fung, S. Gadrat, F. Gastineau, M. Germain, A. Glenn, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H.-Å. Gustafsson, T. Hachiya, A. Hadj Henni, J. S. Haggerty, M. N. Hagiwara, H. Hamagaki, H. Harada, E. P. Hartouni, K. Haruna, M. Harvey, E. Haslum, K. Hasuko, R. Hayano, M. Heffner, T. K. Hemmick, J. M. Heuser, X. He, H. Hiejima, J. C. Hill, R. Hobbs, M. Holmes, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, M. G. Hur, T. Ichihara, K. Imai, M. Inaba, D. Isenhower, L. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, B. V. Jacak, J. Jia, J. Jin, O. Jinnouchi, B. M. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, M. Kaneta, J. H. Kang, T. Kawagishi, A. V. Kazantsev, S. Kelly, A. Khanzadeev, D. J. Kim, E. Kim, Y.-S. Kim, E. Kinney, Á. Kiss, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, L. Kochenda, V. Kochetkov, B. Komkov, M. Konno, D. Kotchetkov, A. Kozlov, P. J. Kroon, G. J. Kunde, N. Kurihara, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, M. K. Lee, M. J. Leitch, M. A. L. Leite, H. Lim, A. Litvinenko, M. X. Liu, X. H. Li, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, H. Masui, F. Matathias, M. C. McCain, P. L. McGaughey, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, G. C. Mishra, J. T. Mitchell, D. P. Morrison, J. M. Moss, T. V. Moukhanova, D. Mukhopadhyay, J. Murata, S. Nagamiya, Y. Nagata, J. L. Nagle, M. Naglis, T. Nakamura, J. Newby, M. Nguyen, B. E. Norman, R. Nouicer, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, O. O. Omiwade, A. Oskarsson, I. Otterlund, K. Ozawa, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, J.-C. Peng, H. Pereira, V. Peresedov, D. Yu. Peressounko, C. Pinkenburg, R. P. Pisani, M. L. Purschke, A. K. Purwar, H. Qu, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, S. S. E. Rosendahl, P. Rosnet, P. Rukoyatkin, V. L. Rykov, S. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, V. Samsonov, H. D. Sato, S. Sato, S. Sawada, V. Semenov, R. Seto, D. Sharma, T. K. Shea, I. Shein, T.-A. Shibata, K. Shigaki, M. Shimomura, T. Shohjoh, K. Shoji, A. Sickles, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, S. Skutnik, W. C. Smith, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, J. P. Sullivan, J. Sziklai, T. Tabaru, S. Takagi, E. M. Takagui, A. Taketani, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, T. L. Thomas, M. Togawa, J. Tojo, H. Torii, R. S. Towell, V-N. Tram, I. Tserruya, Y. Tsuchimoto, S. K. Tuli, H. Tydesjö, N. Tyurin, C. Vale, H. Valle, H. W. van Hecke, J. Velkovska, R. Vértesi, A. A. Vinogradov, E. Vznuzdaev, M. Wagner, X. R. Wang, Y. Watanabe, J. Wessels, S. N. White, N. Willis, D. Winter, C. L. Woody, M. Wysocki, W. Xie, A. Yanovich, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, J. Zimányi, and L. Zolin

Subjects
Source function, Physics, Linear function (calculus), 010308 nuclear & particles physics, Space time, Gaussian, Hadron, General Physics and Astronomy, Radius, 01 natural sciences, Nuclear physics, symbols.namesake, Pion, Non-Gaussianity, 0103 physical sciences, symbols, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

Bose-Einstein correlations of charged kaons are measured for Au+Au collisions at sqrt(s_NN) = 200 GeV and are compared to charged pion probes, which have a larger hadronic scattering cross section. Three dimensional Gaussian source radii are extracted, along with a one-dimensional kaon emission source function. The centrality dependences of the three Gaussian radii are well described by a single linear function if N_part^1/3 with zero intercept. Imaging analysis shows a deviation from a Gaussian tail at r >~ 10 fm, although the bulk emission at lower radius is well-described by a Gaussian. The presence of a non-Gaussian tail in the kaon source reaffirms that the particle emission region in a heavy ion collision is extended, and that similar measurements with pions are not solely due to the decay of long-lived resonances.

Published
2009

19. Systematic studies of elliptic flow measurements inAu+Aucollisions atsNN=200GeV

Author

S. Bathe, Maya Hachiya Shimomura, H. Pei, Y. Berdnikov, Y. I. Makdisi, T. L. Thomas, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Ryugo S. Hayano, Klaus Johannes Reygers, M. J. Tannenbaum, J. Egdemir, Y. Riabov, Kenta Shigaki, J. T. Mitchell, M. Nguyen, S. Afanasiev, A. Ster, D. Mukhopadhyay, A. S. Nyanin, Rachid Nouicer, E. J. Desmond, S. P. Stoll, S. Esumi, J. Newby, G. Roche, D. Bucher, Minghui Liu, W. A. Zajc, P. Tarján, Sean A. Kelly, V. Baublis, A. Denisov, M. Togawa, V. Cianciolo, S. Batsouli, Vladislav Manko, M. C. McCain, A. P.T. Palounek, Sergey Fokin, Kenneth Francis Read, J. Park, Florian Bauer, T. Horaguchi, J. Chiba, Alice Mignerey, S. S.E. Rosendahl, G. Bunce, O. Zaudtke, H. Masui, Charles Maguire, S. Leckey, G. C. Mishra, C. L. Woody, A. V. Kazantsev, Hiroaki Ohnishi, Y. Tsuchimoto, C. Zhang, A. Lebedev, X. He, M. Heffner, P. Rosnet, Takao Sakaguchi, M. Wagner, C. Klein-Boesing, Viktor Riabov, I. E. Yushmanov, Steven E. Skutnik, Alexei Khanzadeev, Mate Csanad, D. Jouan, Y. Cobigo, A. Taranenko, Josh Moss, S. Belikov, K. S. Joo, Senta Greene, A. D. Frawley, T. Tabaru, S. H. Aronson, M. Chiu, T. A. Shibata, E. Kistenev, S. Kametani, V. S. Pantuev, I. V. Sourikova, H. Okada, C. Vale, Yoichiro Fukao, H. W. Van Hecke, R. Pak, S. Takagi, K. Das, H. Qu, W. Holzmann, C. P. Singh, T. C. Awes, B. E. Norman, D. E. Fields, N. Kamihara, M. Harvey, B. M. Johnson, Junji Tojo, I. Ravinovich, H. Harada, Christine Angela Aidala, J. S. Haggerty, A. Kiss, Y. Nagata, Kyoichiro Ozawa, A. Hadj Henni, E. O'Brien, B. V. Jacak, E. H. Kim, Hideki Hamagaki, K. Aoki, G. David, F. Matathias, R. Armendariz, Henner Buesching, E. P. Hartouni, D. Isenhower, K. Okada, K. N. Barish, A. Isupov, D. Sharma, S. S. Ryu, R. A. Soltz, Kazuyoshi Kurita, A. Romana, B. Sahlmueller, S. Gadrat, T. V. Moukhanova, K. Hasuko, David D'Enterria, A. Drees, A. K. Purwar, H. En'yo, P. Constantin, J. Sziklai, M. J. Leitch, M. Wysocki, Tadaaki Isobe, R. Bennett, B. Azmoun, M. J. Kweon, Ahmed Al-Jamel, S. Sakai, M. Grosse Perdekamp, R. Vértesi, V. N. Tram, Evert Stenlund, K. Boyle, C. R. Cleven, J. S. Chai, J. M. Burward-Hoy, J. E. Frantz, R. S. Towell, Xingguo Li, Y. Le Bornec, Y. Tanaka, Akio Kiyomichi, R. P. Pisani, Joakim Nystrand, Taku Gunji, Y. J. Kwon, P. L. McGaughey, Herve Borel, Eva Haslum, W. C. Smith, F. Kajihara, T. K. Shea, M. Gonin, P. J. Kroon, Kensuke Homma, A. Glenn, S. Sorensen, S. F. Pate, C. A. Ogilvie, T. K. Hemmick, N. N. Ajitanand, V. L. Rykov, T. Dahms, N. Kurihara, H. Delagrange, M. K. Lee, Nikolay Tyurin, A. Dion, W. Xie, S. Chernichenko, Atsushi Taketani, Yasuo Miake, H. Lim, F. Staley, H. Pereira, B. Bassalleck, O. Dietzsch, Takahiro Nakamura, M. L. Brooks, N. Grau, Martin Purschke, L. Kochenda, J. G. Boissevain, K. Shoji, M. G. Hur, C. Y. Chi, M. Konno, F. Gastineau, B. Komkov, T. Shohjoh, D. Winter, D. Yu Peressounko, V. Papavassiliou, O. O. Omiwade, Robert F. Hobbs, Y. S. Kim, T. Kawagishi, Masashi Kaneta, A. Durum, M. Issah, P. W. Stankus, D. Kotchetkov, H. Valle, J. L. Drachenberg, Hans-Åke Gustafsson, D. S. Brown, Norio Saito, V. Peresedov, M. D. Malik, E. Vznuzdaev, Z. Fraenkel, T. E. Miller, Debashish Pal, S. Sawada, A. Enokizono, Saskia Mioduszewski, M. A. L. Leite, X. R. Wang, B. Forestier, M. T. Bjorndal, A. Franz, Julia Velkovska, M. Holmes, M. Rosati, C. Pinkenburg, L. Aphecetche, J. H. Kang, J. Jin, J. G. Lajoie, T. Hachiya, E. M. Takagui, Johannes Peter Wessels, V. Babintsev, Ingvar Otterlund, I. J. Choi, G. S. Kyle, Bruno Espagnon, A. K. Dubey, A. A. Vinogradov, Henrik Tydesjö, N. Willis, James Alexander, M. Stepanov, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Motoi Inaba, Anders Oskarsson, D. M. Lee, Jiangyong Jia, Y. Goto, J. Gosset, J. P. Sullivan, Marie Germain, A. G. Litvinenko, S. Yokkaichi, J. M. Heuser, A. Kozlov, R. Seto, K. Haruna, B. A. Cole, V. Dzhordzhadze, V. Bumazhnov, M. P. Comets, M. N. Hagiwara, S. Butsyk, Vladimir Samsonov, Tamas Ferenc Csorgo, J. L. Nagle, I. Tserruya, Yu. Efremenko, V. Singh, Hirohiko Sato, S. K. Tuli, Christophe Pierre Suire, Alexander Milov, O. Drapier, E. R. Kinney, D. P. Morrison, S. Campbell, V. E. Semenov, J. Zimányi, Tatsuya Chujo, M. Naglis, Jen-Chieh Peng, C. L. Silva, Dong Jo Kim, Osamu Jinnouchi, Masayasu Ishihara, Susumu Sato, A. Deshpande, Y. Watanabe, I. Younus, A. Soldatov, K. Tanida, V. I. Kochetkov, D. Silvermyr, J. Murata, Gerd Joachim Kunde, I. Shein, Alberto Baldisseri, Anne Marie Sickles, G. R. Young, K. S. Sim, H. Hiejima, K. Imai, Jan Rak, R. Lacey, R. Granier de Cassagnac, S. N. White, W. E. Sondheim, P. A. Rukoyatkin, S. Y. Fung, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, François Fleuret, T. Ichihara, Matthew G. Reuter, I. D. Ojha, Alexander Malakhov, L. S. Zolin, W. J. Park, P. D. Barnes, and A. Yanovich

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Elliptic flow, Hadron, 01 natural sciences, Charged particle, Color-glass condensate, Nuclear physics, Pseudorapidity, 0103 physical sciences, Quark–gluon plasma, Transverse momentum, Anisotropic flow, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

We present inclusive charged hadron elliptic flow (v(2)) measured over the pseudorapidity range vertical bar eta vertical bar 6.5) pseudorapidities and (2) the two-particle cumulant method extracted using correlations between particles detected at midrapidity. The two event-plane results are consistent within systematic uncertainties over the measured p(T) and in centrality 0-40%. There is at most a 20% difference in the v(2) between the two event-plane methods in peripheral (40-60%) collisions. The comparisons between the two-particle cumulant results and the standard event-plane measurements are discussed.

Published
2009

20. Photon-hadron jet correlations inp+pandAu+Aucollisions atsNN=200GeV

Author

A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, A. Al-Jamel, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, J. Asai, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, A. T. Basye, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, C. Baumann, A. Bazilevsky, S. Belikov, R. Bennett, A. Berdnikov, Y. Berdnikov, A. A. Bickley, M. T. Bjorndal, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, D. S. Brown, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, C. M. Camacho, S. Campbell, J.-S. Chai, B. S. Chang, W. C. Chang, J.-L. Charvet, C.-H. Chen, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. Citron, C. R. Cleven, Y. Cobigo, B. A. Cole, M. P. Comets, M. Connors, P. Constantin, M. Csanád, T. Csörgő, T. Dahms, S. Dairaku, K. Das, G. David, M. B. Deaton, K. Dehmelt, H. Delagrange, A. Denisov, D. d'Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, M. Donadelli, J. L. Drachenberg, O. Drapier, A. Drees, K. A. Drees, A. K. Dubey, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, F. Ellinghaus, W. S. Emam, T. Engelmore, A. Enokizono, H. En'yo, B. Espagnon, S. Esumi, K. O. Eyser, B. Fadem, D. E. Fields, M. Finger, F. Fleuret, S. L. Fokin, B. Forestier, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, K. Fujiwara, Y. Fukao, S.-Y. Fung, T. Fusayasu, S. Gadrat, I. Garishvili, F. Gastineau, M. Germain, A. Glenn, H. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H.-Å. Gustafsson, T. Hachiya, A. Hadj Henni, C. Haegemann, J. S. Haggerty, M. N. Hagiwara, H. Hamagaki, R. Han, H. Harada, E. P. Hartouni, K. Haruna, M. Harvey, E. Haslum, K. Hasuko, R. Hayano, M. Heffner, T. K. Hemmick, T. Hester, J. M. Heuser, X. He, H. Hiejima, J. C. Hill, R. Hobbs, M. Hohlmann, M. Holmes, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, D. Hornback, S. Huang, M. G. Hur, T. Ichihara, R. Ichimiya, Y. Ikeda, K. Imai, J. Imrek, M. Inaba, Y. Inoue, D. Isenhower, L. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, D. Ivanischev, B. V. Jacak, J. Jia, J. Jin, O. Jinnouchi, B. M. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, M. Kaneta, J. H. Kang, H. Kanou, J. Kapustinsky, T. Kawagishi, D. Kawall, A. V. Kazantsev, S. Kelly, T. Kempel, A. Khanzadeev, K. M. Kijima, J. Kikuchi, B. I. Kim, D. H. Kim, D. J. Kim, E. Kim, S. H. Kim, Y.-S. Kim, E. Kinney, K. Kiriluk, A. Kiss, E. Kistenev, A. Kiyomichi, J. Klay, C. Klein-Boesing, L. Kochenda, V. Kochetkov, B. Komkov, M. Konno, J. Koster, D. Kotchetkov, A. Kozlov, A. Král, A. Kravitz, P. J. Kroon, J. Kubart, G. J. Kunde, N. Kurihara, K. Kurita, M. Kurosawa, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, Y.-S. Lai, Y. S. Lai, J. G. Lajoie, D. Layton, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, K. B. Lee, M. K. Lee, T. Lee, M. J. Leitch, M. A. L. Leite, B. Lenzi, P. Liebing, H. Lim, T. Liška, A. Litvinenko, H. Liu, M. X. Liu, X. Li, X. H. Li, B. Love, D. Lynch, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, E. Mannel, Y. Mao, L. Mašek, H. Masui, F. Matathias, M. C. McCain, M. McCumber, P. L. McGaughey, N. Means, B. Meredith, Y. Miake, P. Mikeš, K. Miki, T. E. Miller, A. Milov, S. Mioduszewski, G. C. Mishra, M. Mishra, J. T. Mitchell, M. Mitrovski, A. K. Mohanty, Y. Morino, A. Morreale, D. P. Morrison, J. M. Moss, T. V. Moukhanova, D. Mukhopadhyay, J. Murata, S. Nagamiya, Y. Nagata, J. L. Nagle, M. Naglis, M. I. Nagy, I. Nakagawa, Y. Nakamiya, T. Nakamura, K. Nakano, J. Newby, M. Nguyen, T. Niita, B. E. Norman, R. Nouicer, A. S. Nyanin, J. Nystrand, E. O'Brien, S. X. Oda, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, M. Oka, O. O. Omiwade, Y. Onuki, A. Oskarsson, I. Otterlund, M. Ouchida, K. Ozawa, R. Pak, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, J.-C. Peng, H. Pereira, V. Peresedov, D. Yu. Peressounko, C. Pinkenburg, R. P. Pisani, M. L. Purschke, A. K. Purwar, H. Qu, J. Rak, A. Rakotozafindrabe, I. Ravinovich, K. F. Read, S. Rembeczki, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, D. Roach, G. Roche, S. D. Rolnick, A. Romana, M. Rosati, S. S. E. Rosendahl, P. Rosnet, P. Rukoyatkin, P. Ružička, V. L. Rykov, S. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, K. Sakashita, H. Sakata, V. Samsonov, H. D. Sato, S. Sato, T. Sato, S. Sawada, K. Sedgwick, J. Seele, R. Seidl, A. Yu. Semenov, V. Semenov, R. Seto, D. Sharma, T. K. Shea, I. Shein, A. Shevel, T.-A. Shibata, K. Shigaki, M. Shimomura, T. Shohjoh, K. Shoji, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, C. Silvestre, K. S. Sim, B. K. Singh, C. P. Singh, V. Singh, S. Skutnik, M. Slunečka, W. C. Smith, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, A. Sukhanov, J. P. Sullivan, J. Sziklai, T. Tabaru, S. Takagi, E. M. Takagui, A. Taketani, R. Tanabe, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, H. Themann, T. L. Thomas, M. Togawa, A. Toia, J. Tojo, L. Tomášek, Y. Tomita, H. Torii, R. S. Towell, V.-N. Tram, I. Tserruya, Y. Tsuchimoto, S. K. Tuli, H. Tydesjö, N. Tyurin, C. Vale, H. Valle, H. W. van Hecke, A. Veicht, J. Velkovska, R. Vertesi, A. A. Vinogradov, M. Virius, V. Vrba, E. Vznuzdaev, M. Wagner, D. Walker, X. R. Wang, Y. Watanabe, F. Wei, J. Wessels, S. N. White, N. Willis, D. Winter, C. L. Woody, M. Wysocki, W. Xie, Y. L. Yamaguchi, K. Yamaura, R. Yang, A. Yanovich, Z. Yasin, J. Ying, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, S. Zhou, J. Zimányi, and L. Zolin

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, Parton, Jet (particle physics), 01 natural sciences, Nuclear physics, Momentum, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Radioactive decay
Abstract

We report the observation at the Relativistic Heavy Ion Collider of suppression of back-to-back correlations in the direct photon+jet channel in Au+Au relative to p+p collisions. Two-particle correlations of direct photon triggers with associated hadrons are obtained by statistical subtraction of the decay photon-hadron (gamma-h) background. The initial momentum of the away-side parton is tightly constrained, because the parton-photon pair exactly balance in momentum at leading order in perturbative quantum chromodynamics, making such correlations a powerful probe of the in-medium parton energy loss. The away-side nuclear suppression factor, I-AA, in central Au+Au collisions, is 0.32 +/- 0.12(stat)+/- 0.09(syst) for hadrons of 3 < p(T)(h)< 5 in coincidence with photons of 5 < p(T)(gamma)< 15 GeV/c. The suppression is comparable to that observed for high-p(T) single hadrons and dihadrons. The direct photon associated yields in p+p collisions scale approximately with the momentum balance, z(T)equivalent to p(T)(h)/p(T)(gamma), as expected for a measurement of the away-side parton fragmentation function. We compare to Au+Au collisions for which the momentum balance dependence of the nuclear modification should be sensitive to the path-length dependence of parton energy loss.

Published
2009

21. Erratum: Cold nuclear matter effects onJ/ψproduction as constrained by deuteron-gold measurements atsNN=200GeV [Phys. Rev. C77, 024912 (2008)]

Author

A. Adare, S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, A. Al-Jamel, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, J. Asai, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, G. Baksay, L. Baksay, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, R. Bennett, Y. Berdnikov, A. A. Bickley, M. T. Bjorndal, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, S. Campbell, P. Chand, B. S. Chang, W. C. Chang, J. -L. Charvet, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, C. R. Cleven, Y. Cobigo, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgő, J. P. Cussonneau, T. Dahms, K. Das, G. David, F. Deák, M. B. Deaton, K. Dehmelt, H. Delagrange, A. Denisov, D. d'Enterria, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, A. Dion, M. Donadelli, J. L. Drachenberg, O. Drapier, A. Drees, A. K. Dubey, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, F. Ellinghaus, W. S. Emam, A. Enokizono, H. En'yo, B. Espagnon, S. Esumi, K. O. Eyser, D. E. Fields, C. Finck, M. Finger, Jr., M. Finger, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, K. Fujiwara, Y. Fukao, S. -Y. Fung, T. Fusayasu, S. Gadrat, I. Garishvili, M. Germain, A. Glenn, H. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H. -Å. Gustafsson, T. Hachiya, A. Hadj Henni, C. Haegemann, J. S. Haggerty, H. Hamagaki, R. Han, A. G. Hansen, H. Harada, E. P. Hartouni, K. Haruna, M. Harvey, E. Haslum, K. Hasuko, R. Hayano, M. Heffner, T. K. Hemmick, T. Hester, J. M. Heuser, X. He, P. Hidas, H. Hiejima, J. C. Hill, R. Hobbs, M. Hohlmann, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Horaguchi, D. Hornback, T. Ichihara, V. V. Ikonnikov, K. Imai, M. Inaba, Y. Inoue, M. Inuzuka, D. Isenhower, L. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, B. V. Jacak, J. Jia, J. Jin, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, M. Kaneta, J. H. Kang, H. Kanou, K. Katou, T. Kawabata, D. Kawall, A. V. Kazantsev, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, E. Kim, G. -B. Kim, H. J. Kim, E. Kinney, A. Kiss, E. Kistenev, A. Kiyomichi, J. Klay, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, R. Kohara, B. Komkov, M. Konno, D. Kotchetkov, A. Kozlov, A. Král, A. Kravitz, P. J. Kroon, J. Kubart, C. H. Kuberg, G. J. Kunde, N. Kurihara, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, Y. -S. Lai, J. G. Lajoie, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, M. K. Lee, T. Lee, M. J. Leitch, M. A. L. Leite, B. Lenzi, H. Lim, T. Liška, A. Litvinenko, M. X. Liu, X. Li, X. H. Li, B. Love, D. Lynch, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, Y. Mao, G. Martinez, L. Mašek, H. Masui, F. Matathias, T. Matsumoto, M. C. McCain, M. McCumber, P. L. McGaughey, Y. Miake, P. Mikeš, K. Miki, T. E. Miller, A. Milov, S. Mioduszewski, G. C. Mishra, M. Mishra, J. T. Mitchell, M. Mitrovski, A. K. Mohanty, A. Morreale, D. P. Morrison, J. M. Moss, T. V. Moukhanova, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagata, J. L. Nagle, M. Naglis, I. Nakagawa, Y. Nakamiya, T. Nakamura, K. Nakano, J. Newby, M. Nguyen, B. E. Norman, A. S. Nyanin, J. Nystrand, E. O'Brien, S. X. Oda, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, M. Oka, O. O. Omiwade, A. Oskarsson, I. Otterlund, M. Ouchida, K. Oyama, K. Ozawa, R. Pak, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, V. Penev, J. -C. Peng, H. Pereira, V. Peresedov, D. Yu. Peressounko, A. Pierson, C. Pinkenburg, R. P. Pisani, M. L. Purschke, A. K. Purwar, J. M. Qualls, H. Qu, J. Rak, A. Rakotozafindrabe, I. Ravinovich, K. F. Read, S. Rembeczki, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, S. S. E. Rosendahl, P. Rosnet, P. Rukoyatkin, V. L. Rykov, S. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, H. Sakata, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, J. Seele, R. Seidl, V. Semenov, R. Seto, D. Sharma, T. K. Shea, I. Shein, A. Shevel, T. -A. Shibata, K. Shigaki, M. Shimomura, K. Shoji, A. Sickles, C. L. Silva, D. Silvermyr, C. Silvestre, K. S. Sim, C. P. Singh, V. Singh, S. Skutnik, M. Slunečka, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, J. P. Sullivan, J. Sziklai, T. Tabaru, S. Takagi, E. M. Takagui, A. Taketani, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, T. L. Thomas, M. Togawa, A. Toia, J. Tojo, L. Tomášek, H. Torii, R. S. Towell, V. -N. Tram, I. Tserruya, Y. Tsuchimoto, H. Tydesjö, N. Tyurin, T. J. Uam, C. Vale, H. Valle, H. W. vanHecke, J. Velkovska, M. Velkovsky, R. Vertesi, V. Veszprémi, A. A. Vinogradov, M. Virius, M. A. Volkov, V. Vrba, E. Vznuzdaev, M. Wagner, D. Walker, X. R. Wang, Y. Watanabe, J. Wessels, S. N. White, N. Willis, D. Winter, F. K. Wohn, C. L. Woody, M. Wysocki, W. Xie, Y. L. Yamaguchi, A. Yanovich, Z. Yasin, J. Ying, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, S. Zhou, J. Zimányi, L. Zolin, and X. Zong

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Deuterium, Nuclear matter
Published
2009

22. Charged Kaon interferometric probes of space-time evolution in Au+Au collisions at sqrt[S(NN)]=200 GeV

Author

S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, T, Chujo, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, K, Das, G, David, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, D E, Fields, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, S-Y, Fung, S, Gadrat, F, Gastineau, M, Germain, A, Glenn, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, J S, Haggerty, M N, Hagiwara, H, Hamagaki, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, J M, Heuser, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, M G, Hur, T, Ichihara, K, Imai, M, Inaba, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, T, Kawagishi, A V, Kazantsev, S, Kelly, A, Khanzadeev, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, P J, Kroon, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, M J, Leitch, M A L, Leite, H, Lim, A, Litvinenko, M X, Liu, X H, Li, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, H, Masui, F, Matathias, M C, McCain, P L, McGaughey, Y, Miake, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, J T, Mitchell, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, T, Nakamura, J, Newby, M, Nguyen, B E, Norman, R, Nouicer, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, O O, Omiwade, A, Oskarsson, I, Otterlund, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, V, Samsonov, H D, Sato, S, Sato, S, Sawada, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, S, Skutnik, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, J, Tojo, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, van Hecke, J, Velkovska, R, Vértesi, A A, Vinogradov, E, Vznuzdaev, M, Wagner, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, A, Yanovich, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, J, Zimányi, and L, Zolin

Abstract

Bose-Einstein correlations of charged kaons are used to probe Au+Au collisions at sqrt[S(NN)]=200 GeV and are compared to charged pion probes, which have a larger hadronic scattering cross section. Three-dimensional Gaussian source radii are extracted, along with a one-dimensional kaon emission source function. The centrality dependences of the three Gaussian radii are well described by a single linear function of N(part)1/3 with a zero intercept. Imaging analysis shows a deviation from a Gaussian tail at r greater than or approximately equal to 10 fm, although the bulk emission at lower radius is well described by a Gaussian. The presence of a non-Gaussian tail in the kaon source reaffirms that the particle emission region in a heavy-ion collision is extended, and that similar measurements with pions are not solely due to the decay of long-lived resonances.

Published
2009

23. Suppression Pattern of Neutral Pions at High Transverse Momentum inAu+AuCollisions atsNN=200 GeVand Constraints on Medium Transport Coefficients

Author

S. Esumi, Y. J. Mao, S. Kametani, B. Love, R. A. Soltz, Marie Germain, Minghui Liu, E. H. Kim, J. H. Kang, W. A. Zajc, David D'Enterria, J. S. Haggerty, M. Grosse Perdekamp, A. G. Litvinenko, Kenneth Francis Read, C. Silvestre, M. Chiu, Marisilvia Donadelli, V. Bumazhnov, Andry Malala Rakotozafindrabe, K. Hasuko, A. Romana, Roy A. Lacey, Rushan Han, M. N. Hagiwara, T. A. Shibata, V. Baublis, A. Denisov, V. Cianciolo, M. Issah, R. P. Pisani, F. Matathias, J. L. Drachenberg, K. Dehmelt, Evert Stenlund, Kensuke Homma, M. D. Malik, E. Vznuzdaev, Nikolay Tyurin, E. J. Desmond, A. Kozlov, K. S. Sim, J. Chiba, Hiroyuki Okada, Joakim Nystrand, Jen-Chieh Peng, D. Winter, M. P. Comets, Sergey Fokin, S. Chernichenko, H. Lim, M. N. Wagner, A. V. Kazantsev, S. P. Sorensen, D. Isenhower, A. Hadj Henni, Dylan Walker, R. Seto, K. Haruna, B. Bassalleck, D. Yu Peressounko, M. Togawa, J. Park, Florian Bauer, D. E. Fields, A. Toia, Eva Haslum, B. Lenzi, Y. Kwon, K. Boyle, Wei Xie, T. Horaguchi, G. C. Mishra, L. Mašek, A. Shevel, B. V. Jacak, Xiong Wang, Takao Sakaguchi, Y. S. Lai, M. Konno, P. Tarján, H. Hiejima, V. Dzhordzhadze, S. Takagi, Y. Tsuchimoto, T. Hester, C. Klein-Boesing, Dong Jo Kim, P. Mikeš, M. McCumber, A. K. Purwar, Osamu Jinnouchi, M. Ouchida, J. G. Lajoie, J. Asai, R. Pak, K. N. Barish, A. D. Frawley, Xiao-yan Li, Y. Nakamiya, T. Tabaru, Yoichiro Fukao, T. Hachiya, S. Batsouli, H. Kanou, Taku Gunji, H. Gong, J. Seele, I. E. Yushmanov, J. G. Boissevain, Senta Greene, Ingvar Otterlund, K. O. Eyser, K. Fujiwara, N. Kamihara, N. Grau, S. H. Aronson, K. Imai, O. Zaudtke, S. Afanasiev, A. Ster, Alexei Khanzadeev, G. Baksay, S. Kelly, N. N. Ajitanand, V-N. Tram, B. E. Norman, Masashi Kaneta, W. Holzmann, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, Johannes Peter Wessels, M. T. Bjorndal, T. C. Awes, Kyoichiro Ozawa, T. Liška, R. Armendariz, I. J. Choi, A. Kravitz, E. O'Brien, Hiroaki Ohnishi, Shingo Sakai, F. Kajihara, K. Shoji, H. Sakata, J. Newby, O. Drapier, Frank Ellinghaus, Maya Hachiya Shimomura, Takahiro Nakamura, Kazuyoshi Kurita, Jun Kikuchi, Y. I. Makdisi, Motoi Inaba, Tadaaki Isobe, E. R. Kinney, D. P. Morrison, M. C. McCain, G. S. Kyle, C. L. Woody, C. Pinkenburg, S. Campbell, Susumu Oda, James Alexander, Charles Maguire, S. Leckey, J. S. Chai, H. Delagrange, A. Drees, T. Shohjoh, J. T. Mitchell, A. Durum, V. E. Semenov, A. P.T. Palounek, Anne Marie Sickles, M. Virius, N. Willis, J. Zimányi, M. L. Brooks, J. Kubart, P. W. Stankus, R. Seidl, Vladislav Manko, Tatsuya Chujo, R. Averbeck, I. Tserruya, P. L. McGaughey, D. S. Brown, Byung-Sik Hong, M. Slunečka, A. Bazilevsky, M. J. Tannenbaum, Yu. Efremenko, M. Stepanov, G. Roche, Philippe Rosnet, V. Singh, D. Hornback, Anders Oskarsson, O. O. Omiwade, Alexandre Lebedev, H. W. Van Hecke, S. Zhou, K. Das, T. V. Moukhanova, D. M. Lee, J. Gosset, M. Heffner, I. V. Sourikova, E. P. Hartouni, Steven E. Skutnik, J. P. Sullivan, C. Vale, D. Mukhopadhyay, S. Rembeczki, V. Peresedov, Y. Le Bornec, D. Bucher, T. L. Thomas, C. Zhang, B. S. Chang, C. A. Ogilvie, T. K. Hemmick, X. He, Xingguo Li, Yasuo Miake, Robert F. Hobbs, A. Taranenko, Hirohiko Sato, Kazushi Miki, Y. L. Yamaguchi, Christine Angela Aidala, J. Klay, G. R. Young, S. K. Tuli, Y. S. Kim, B. Komkov, Ryugo S. Hayano, Hans-Åke Gustafsson, M. Gonin, S. Bathe, Y. Riabov, L. Kochenda, J. L. Charvet, Norio Saito, Kenta Shigaki, H. Masui, Viktor Riabov, M. A. L. Leite, H. Pereira, A. K. Dubey, M. Nguyen, Jan Rak, A. S. Nyanin, S. Yokkaichi, J. M. Heuser, A. A. Bickley, T. Kawagishi, H. Qu, Josh Moss, R. Granier de Cassagnac, A. Adare, Debashish Pal, T. E. Miller, Hideki Hamagaki, K. Aoki, J. Egdemir, S. Sawada, Y. Berdnikov, G. David, J. Ying, V. Babintsev, A. Franz, Y. Cobigo, E. T. Atomssa, Jason Kamin, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, R. Vértesi, C. R. Cleven, C. Haegemann, Y. Inoue, Y. Akiba, A. Churyn, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, P. Chung, D. Jouan, J. Imrek, M. Holmes, J. E. Frantz, Vaclav Vrba, Klaus Johannes Reygers, E. Kistenev, P. J. Kroon, Dong-Hun Kim, W. S. Emam, Laurent Bernard Aphecetche, M. Mitrovski, Herve Borel, D. Lynch, A. Glenn, A. Kiss, M. Wysocki, V. L. Rykov, T. Dahms, Z. Yasin, H. Harada, I. Ravinovich, Henner Buesching, Y. Nagata, M. B. Deaton, S. F. Pate, S. S. Ryu, Marcus Hohlmann, Y. Tanaka, R. Bennett, T. K. Shea, Ahmed Al-Jamel, M. Finger, H. Al-Bataineh, V. Papavassiliou, Sébastien Gadrat, F. Staley, L. Baksay, H. Pei, M. Rosati, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, Jiangyong Jia, Y. Goto, O. Dietzsch, H. Valle, L. Tomášek, Julia Velkovska, V. S. Pantuev, D. Kawall, K. Tanida, M. Harvey, V. I. Kochetkov, D. Silvermyr, J. Murata, Gerd Joachim Kunde, I. Shein, Junji Tojo, Alberto Baldisseri, K. Okada, B. Sahlmueller, H. En'yo, P. Constantin, M. J. Leitch, R. S. Towell, I. Garishvili, Akio Kiyomichi, M. Naglis, J. M. Burward-Hoy, C. L. Silva, N. Kurihara, W. C. Smith, Tae-Yeon Lee, Martin Purschke, F. Gastineau, D. Kotchetkov, A. Morreale, Z. Fraenkel, Masayasu Ishihara, S. Belikov, K. S. Joo, M. K. Lee, Susumu Sato, D. Sharma, M. G. Hur, C. Y. Chi, B. Azmoun, A. Král, M. J. Kweon, A. Deshpande, M. Oka, A. Dion, Atsushi Taketani, A. Enokizono, Y. Watanabe, I. Younus, A. Soldatov, C. P. Singh, B. M. Johnson, A. Isupov, S. Butsyk, Vladimir Samsonov, Tamas Ferenc Csorgo, J. L. Nagle, J. Sziklai, Brian Cole, Saskia Mioduszewski, J. Jin, E. M. Takagui, S. N. White, K. Nakano, W. E. Sondheim, P. A. Rukoyatkin, T. Ichihara, Matthew G. Reuter, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, S. Y. Fung, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, François Fleuret, B. Forestier, and Mate Csanad

Subjects
Quenching, Physics, Spectral shape analysis, 010308 nuclear & particles physics, Root (chord), General Physics and Astronomy, Parton, Transport theory, 01 natural sciences, Measure (mathematics), Nuclear physics, Pion, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

For Au + Au collisions at 200 GeV, we measure neutral pion production with good statistics for transverse momentum, p(T), up to 20 GeV/c. A fivefold suppression is found, which is essentially constant for 5 in the parton quenching model. The spectral shape is similar for all collision classes, and the suppression does not saturate in Au + Au collisions.

Published
2008

24. Charged hadron multiplicity fluctuations inAu+AuandCu+Cucollisions fromsNN=22.5to 200 GeV

Author

Yu. Efremenko, Martin Purschke, F. Gastineau, V. Singh, G. B. Kim, D. Kotchetkov, Mate Csanad, J. G. Boissevain, A. Morreale, B. Khachaturov, Z. Fraenkel, Alexei Khanzadeev, Masashi Kaneta, T. Matsumoto, N. Bruner, E. Stenlund, N. N. Ajitanand, David D'Enterria, Hirohiko Sato, H. Sakata, K. Katou, K. Hasuko, S. K. Tuli, R. K. Choudhury, S. S. Adler, G. S. Kyle, C. Pinkenburg, P. Tarján, Sean A. Kelly, N. Willis, R. P. Pisani, James Alexander, Tadaaki Isobe, L. Tomášek, Takahiro Nakamura, V. S. Pantuev, Hiroyuki Okada, A. Hadj Henni, R. Averbeck, J. S. Chai, Susumu Oda, Byung-Sik Hong, A. Bazilevsky, Viktor Veszpremi, Nikolay Tyurin, K. S. Sim, M. Stepanov, G. Roche, Y. J. Mao, S. Kametani, M. Harvey, Pàl Hidas, Saskia Mioduszewski, Joakim Nystrand, Eva Haslum, B. Lenzi, M. N. Wagner, J. H. Kang, Junji Tojo, Y. Watanabe, J. M. Burward-Hoy, J. S. Haggerty, T. Shohjoh, A. Durum, W. C. Smith, L. Sanfratello, K. Boyle, Wei Xie, T. V. Moukhanova, Philippe Rosnet, M. K. Lee, K. Ozawa, K. Okada, S. Belikov, K. S. Joo, P. L. McGaughey, B. Sahlmueller, H. En'yo, P. Constantin, A. Romana, Alexandre Lebedev, M. J. Leitch, Yves Roland Schutz, O. Dietzsch, K. O. Eyser, K. Fujiwara, J. L. Drachenberg, H. Hiejima, D. S. Brown, J. E. Frantz, H. Valle, C. H. Kuberg, C. Silvestre, D. M. Lee, D. Kawall, K. Dehmelt, Xiaopeng Zong, Jen-Chieh Peng, S. Afanasiev, A. Ster, J. Chiba, J. Jin, Dipanwita Dutta, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, E. M. Takagui, K. Tanida, V. I. Kochetkov, R. Pak, R. S. Towell, Y. S. Lai, Herve Borel, D. Lynch, A. Shevel, G. C. Mishra, D. E. Fields, B. D. Fox, Robert F. Hobbs, Ferenc Deák, K. Imai, Julia Velkovska, I. Garishvili, Akio Kiyomichi, Y. L. Yamaguchi, D. Sharma, B. Komkov, R. Vértesi, B. V. Jacak, J. Murata, N. Kamihara, R. Armendariz, T. Hester, Takao Sakaguchi, Kazuyoshi Kurita, Senta Greene, N. Kurihara, J. Gosset, M. Rosati, Charles Maguire, H. W. Van Hecke, J. P. Sullivan, A. Glenn, Dong Jo Kim, S. Leckey, C. Klein-Boesing, Minghui Liu, M. Velkovsky, S. Batsouli, Norio Saito, Anne Marie Sickles, S. P. Sorensen, D. Hornback, F. Matathias, M. McCumber, A. K. Purwar, A. D. Frawley, M. Heffner, C. R. Cleven, C. Haegemann, Y. Inoue, Dylan Walker, A. Drees, Gerd Joachim Kunde, J. Kubart, S. C. Johnson, M. G. Hur, C. Y. Chi, B. Azmoun, A. Král, Youngil Kwon, W. C. Chang, Kensuke Homma, I. Shein, M. A. L. Leite, M. J. Kweon, T. Tabaru, Ch. Finck, V. L. Rykov, T. Dahms, Kenneth Francis Read, Jason Newby, A. Taranenko, R. Kohara, J. Egdemir, P. J. Kroon, B. E. Norman, Y. Le Bornec, Osamu Jinnouchi, Josh Moss, E. O'Brien, Dong-Hun Kim, A. A. Vinogradov, Henrik Tydesjö, Jason Kamin, M. C. McCain, V-N. Tram, S. H. Aronson, A. Kiss, I. Ravinovich, M. Oka, V. Babintsev, J. G. Lajoie, T. Hachiya, R. A. Soltz, L. Aphecetche, Motoi Inaba, Takeo Kawabata, S. P. Stoll, Jiangyong Jia, Y. Goto, Y. Nagata, S. S.E. Rosendahl, Debashish Pal, G. Bunce, S. Sawada, G. R. Young, W. Holzmann, Z. Yasin, Henner Buesching, C. L. Woody, P. Chand, Marcus Hohlmann, Rushan Han, M. N. Hagiwara, S. Butsyk, Vladimir Samsonov, A. P.T. Palounek, C. P. Singh, B. M. Johnson, S. Esumi, A. Churyn, I. Otterlund, M. Grosse Perdekamp, Maya Hachiya Shimomura, Y. I. Makdisi, Kazushi Miki, A. Dion, E. J. Desmond, Jean-Pierre Cussonneau, M. Togawa, S. N. White, Atsushi Taketani, A. Enokizono, E. H. Kim, I. J. Choi, A. Kravitz, D. Jouan, S. Chernichenko, H. Lim, B. Bassalleck, N. Grau, K. Shoji, J. Park, Johannes Peter Wessels, Florian Bauer, M. A. Volkov, W. A. Zajc, E. Kistenev, S. S. Ryu, M. Konno, P. W. Stankus, K. Das, E. P. Hartouni, J. Ying, A. Franz, Hiroaki Ohnishi, A. Pierson, M. Ouchida, Alberto Baldisseri, A. Isupov, C. Suire, V. Baublis, A. Denisov, V. Cianciolo, H. Kobayashi, S. Bathe, Y. Tsuchimoto, M. Issah, J. M. Qualls, H. Harada, J. Asai, Sergey Fokin, C. A. Ogilvie, M. J. Tannenbaum, R. Bennett, K. Nakano, Agneta Oskarsson, T. K. Hemmick, M. D. Malik, E. Vznuzdaev, Xiao-yan Li, Jan Rak, Yasuo Miake, J. Sziklai, I. E. Yushmanov, H. Pei, T. Horaguchi, A. Hoover, Steven E. Skutnik, V. V. Ikonnikov, Y. Berdnikov, Y. Akiba, R. Lacey, M. Mishra, S. Nagamiya, Brian Cole, J. T. Mitchell, Kazuhiro Tanaka, L. Kochenda, D. Mukhopadhyay, Ahmed Al-Jamel, David Olle Rickard Silvermyr, W. E. Sondheim, M. Finger, S. Rembeczki, R. Granier de Cassagnac, Vaclav Vrba, Klaus Johannes Reygers, B. Espagnon, A. Adare, A. G. Hansen, Shingo Sakai, D. Bucher, M. Naglis, D. Winter, H. A. Gustafsson, D. Yu Peressounko, T. Kawagishi, C. L. Silva, O. Zaudtke, Tamas Ferenc Csorgo, T. L. Thomas, H. Qu, C. Zhang, R. Seidl, Xingguo Li, M. Gonin, Alexander Milov, I. Nakagawa, Vladislav Manko, V.N. Penev, P. A. Rukoyatkin, O. Drapier, Frank Ellinghaus, H. J. Kim, M. Virius, Viktor Riabov, M. Inuzuka, Hideki Hamagaki, K. Aoki, G. David, H. Pereira, Ryugo S. Hayano, M. Slunečka, S. Y. Fung, J. L. Nagle, Masayasu Ishihara, E. R. Kinney, D. P. Morrison, Y. Riabov, S. Campbell, Kenta Shigaki, Susumu Sato, V. E. Semenov, J. Zimányi, M. Nguyen, Tatsuya Chujo, M. Muniruzzaman, A. S. Nyanin, A. Deshpande, X. Camard, John Hill, K. Oyama, Y. Cobigo, C. Vale, B. S. Chang, Toru Sugitate, M. B. Deaton, L. D. Isenhower, M. Mitrovski, Christine Angela Aidala, J. Klay, I. Younus, Y. Nakamiya, Y. Tanaka, T. K. Shea, M. Wysocki, A. Soldatov, François Fleuret, B. Forestier, G. Baksay, I. V. Sourikova, H. Torii, T. Ichihara, M. T. Bjorndal, S. F. Pate, F. K. Wohn, Matthew G. Reuter, H. Al-Bataineh, X. R. Wang, F. Staley, L. Baksay, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, V. Papavassiliou, Sébastien Gadrat, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, A. V. Kazantsev, P. Mikeš, Yoichiro Fukao, T. C. Awes, T. Liška, Jun Kikuchi, S. Yokkaichi, J. M. Heuser, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, D. Isenhower, A. Toia, L. Mašek, German Martinez, H. Kanou, A. Devismes, Taku Gunji, H. Gong, J. Seele, F. Kajihara, H. Delagrange, S. Zhou, Y. S. Kim, J. L. Charvet, T. E. Miller, E. T. Atomssa, R. Santo, P. Chung, M. Holmes, W. S. Emam, X. He, O. O. Omiwade, V. Peresedov, H. Masui, A. K. Dubey, A. A. Bickley, B. Love, Marie Germain, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, V. Dzhordzhadze, S. Takagi, K. N. Barish, T. J. Uam, M. L. Brooks, Tae-Yeon Lee, and I. Tserruya

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Collision, 01 natural sciences, Bin, Ion, Nuclear physics, Superposition principle, Strange matter, 0103 physical sciences, Cluster (physics), Multiplicity (chemistry), Nuclear Experiment, 010306 general physics
Abstract

A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at s(NN) =62.4 and 200 GeV, and Cu+Cu collisions at s(NN) =22.5,62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for nondynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon p+p data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. A comparison of the data with a model where hadrons are independently emitted from a number of hadron clusters suggests that the mean number of hadrons per cluster is small in heavy ion collisions.

Published
2008

25. Dihadron azimuthal correlations in Au+Au collisions atsNN=200GeV

Author

S. Afanasiev, J. L. Drachenberg, B. Love, A. Ster, R. A. Soltz, I. Ravinovich, Y. Nagata, T. Ichihara, Marie Germain, S. P. Sorensen, Dylan Walker, C. Silvestre, A. G. Litvinenko, Tae-Yeon Lee, C. R. Cleven, C. Haegemann, Y. Inoue, N. Grau, P. J. Kroon, Dong-Hun Kim, M. Issah, S. S. Ryu, Marisilvia Donadelli, K. Shoji, Martin Purschke, Matthew G. Reuter, M. D. Malik, A. Deshpande, F. Gastineau, Takahiro Fusayasu, E. Vznuzdaev, J. G. Lajoie, P. W. Stankus, E. H. Kim, T. Hachiya, M. Grosse Perdekamp, V. Bumazhnov, M. P. Comets, A. Kozlov, R. Seto, K. Haruna, D. Hornback, I. J. Choi, A. Kravitz, R. Bennett, I. D. Ojha, Alexander Malakhov, Maya Hachiya Shimomura, Andry Malala Rakotozafindrabe, D. Kotchetkov, V. Dzhordzhadze, M. Heffner, Charles Maguire, S. Leckey, Steven E. Skutnik, A. Morreale, Tadaaki Isobe, Ahmed Al-Jamel, Y. I. Makdisi, M. Finger, X. He, Z. Fraenkel, J. S. Chai, A. Hadj Henni, O. O. Omiwade, H. A. Gustafsson, H. Qu, M. Gonin, A. Taranenko, Josh Moss, Y. Watanabe, V. S. Pantuev, Hideki Hamagaki, K. Aoki, Kazushi Miki, G. David, V. Peresedov, O. Dietzsch, D. Silvermyr, K. Boyle, Wei Xie, C. L. Woody, J. E. Frantz, Xiao-yan Li, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, H. Valle, I. Younus, C. Zhang, B. Azmoun, E. Kistenev, H. Pereira, M. Harvey, A. Král, M. J. Kweon, S. Kelly, J. Gosset, L. S. Zolin, D. Winter, W. J. Park, D. Yu Peressounko, P. L. McGaughey, N. N. Ajitanand, H. Masui, A. K. Dubey, A. Soldatov, O. Drapier, Frank Ellinghaus, Y. Le Bornec, E. R. Kinney, Herve Borel, D. Lynch, Junji Tojo, P. Tarján, D. P. Morrison, M. Mitrovski, K. Hasuko, J. P. Sullivan, P. D. Barnes, Hiroaki Ohnishi, A. Yanovich, S. Campbell, Viktor Riabov, Julia Velkovska, A. Glenn, H. Harada, A. A. Bickley, S. Y. Fung, Hiroyuki Okada, G. S. Kyle, C. P. Singh, V. E. Semenov, M. Oka, K. Okada, N. Willis, James Alexander, M. Naglis, J. Zimányi, M. Rosati, Alexei Khanzadeev, B. Sahlmueller, S. Batsouli, V. L. Rykov, T. Dahms, M. B. Deaton, Joakim Nystrand, C. L. Silva, Eva Haslum, B. Lenzi, Tatsuya Chujo, K. Dehmelt, A. Dion, Jen-Chieh Peng, S. Takagi, H. En'yo, P. Constantin, R. Averbeck, Byung-Sik Hong, M. Wysocki, M. J. Tannenbaum, A. Bazilevsky, M. J. Leitch, L. Aphecetche, Y. Tanaka, L. Tomáek, Takahiro Nakamura, K. N. Barish, Bruno Espagnon, I. V. Sourikova, E. Stenlund, Masayasu Ishihara, H. Sakata, B. M. Johnson, John Hill, O. Zaudtke, Atsushi Taketani, A. Enokizono, M. C. McCain, Susumu Sato, T. L. Thomas, A. A. Vinogradov, Henrik Tydesjö, T. K. Shea, Roy A. Lacey, Xiong Wang, J. M. Burward-Hoy, S. F. Pate, Philippe Rosnet, K. Das, Jiangyong Jia, Y. Goto, H. A. Torii, Alexandre Lebedev, Toru Sugitate, S. Belikov, K. S. Joo, Rushan Han, L. D. Isenhower, D. Kawall, Senta Greene, K. Tanida, M. Virius, Dong Jo Kim, Osamu Jinnouchi, A. P.T. Palounek, Susumu Oda, Ryugo S. Hayano, Xingguo Li, E. P. Hartouni, F. Staley, L. Baksay, H. Al-Bataineh, A. Isupov, V. I. Kochetkov, D. M. Lee, Y. Riabov, M. L. Brooks, S. Yokkaichi, M. N. Hagiwara, J. M. Heuser, W. C. Smith, Kenta Shigaki, I. Tserruya, S. Esumi, T. Shohjoh, Yu. Efremenko, V. Singh, M. Nguyen, S. Butsyk, A. Durum, J. Murata, François Fleuret, D. Mukhopadhyay, B. Forestier, S. Rembeczki, Y. J. Mao, Minghui Liu, S. Kametani, Y. L. Yamaguchi, J. Sziklai, B. Komkov, W. A. Zajc, Johannes Peter Wessels, Gerd Joachim Kunde, Y. Cobigo, A. S. Nyanin, M. K. Lee, Brian Cole, V. Papavassiliou, Sébastien Gadrat, I. Shein, V. Baublis, A. Denisov, V. Cianciolo, B. E. Norman, Vladimir Samsonov, I. Otterlund, S. N. White, D. Sharma, J. H. Kang, E. O'Brien, Norio Saito, J. S. Haggerty, D. S. Brown, M. A. L. Leite, Hirohiko Sato, Robert F. Hobbs, A. Romana, S. K. Tuli, R. S. Towell, I. Garishvili, Akio Kiyomichi, Sergey Fokin, D. Bucher, Kenneth Francis Read, T. Horaguchi, Alberto Baldisseri, T. V. Moukhanova, Debashish Pal, N. Kurihara, S. Sawada, A. V. Kazantsev, J. Ying, A. Franz, M. Ouchida, J. Asai, D. E. Fields, J. Chiba, B. V. Jacak, V. Babintsev, E. J. Desmond, M. Togawa, J. Park, P. Mikeš, Y. S. Lai, Yoichiro Fukao, Shingo Sakai, M. G. Hur, C. Y. Chi, M. McCumber, A. K. Purwar, G. C. Mishra, T. C. Awes, Kyoichiro Ozawa, T. Liška, Florian Bauer, Jun Kikuchi, Y. Tsuchimoto, Takao Sakaguchi, J. G. Boissevain, Masashi Kaneta, Tamas Ferenc Csorgo, C. Klein-Boesing, Jan Rak, C. Pinkenburg, A. D. Frawley, T. Tabaru, I. E. Yushmanov, M. Stepanov, G. Roche, S. H. Aronson, Saskia Mioduszewski, W. Holzmann, J. L. Nagle, R. Vértesi, Jason Newby, J. Jin, E. M. Takagui, R. Granier de Cassagnac, A. Adare, Anne Marie Sickles, G. R. Young, K. S. Sim, Y. Kwon, H. Hiejima, K. Imai, J. T. Mitchell, Mate Csanad, R. Seidl, Vladislav Manko, M. Slunečka, M. Chiu, T. A. Shibata, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, Y. Nakamiya, G. Baksay, M. T. Bjorndal, David D'Enterria, F. Matathias, Kensuke Homma, S. Chernichenko, H. Lim, B. Bassalleck, R. P. Pisani, D. Isenhower, A. Toia, M. Konno, Nikolay Tyurin, L. Mašek, M. N. Wagner, A. Shevel, T. Hester, V-N. Tram, Motoi Inaba, H. Kanou, Taku Gunji, H. Gong, J. Seele, A. Kiss, F. Kajihara, Z. Yasin, H. Delagrange, Henner Buesching, S. Zhou, Marcus Hohlmann, Y. S. Kim, J. L. Charvet, S. Bathe, Agneta Oskarsson, T. E. Miller, Y. Berdnikov, E. T. Atomssa, Y. Akiba, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, P. Chung, Vaclav Vrba, Klaus Johannes Reygers, M. Holmes, W. S. Emam, K. O. Eyser, K. Fujiwara, H. W. Van Hecke, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, L. Kochenda, T. Kawagishi, R. Pak, N. Kamihara, R. Armendariz, Kazuyoshi Kurita, A. Drees, J. Kubart, J. Egdemir, Jason Kamin, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, A. Churyn, D. Jouan, K. Nakano, W. E. Sondheim, P. A. Rukoyatkin, and H. Pei

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Posterior region, Hadron, Elliptic flow, 01 natural sciences, Spectral line, Nuclear physics, Azimuth, Shoulder region, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Jet quenching
Abstract

Azimuthal angle (Delta phi) correlations are presented for a broad range of transverse momentum (0.4 < p(T) < 10 GeV/c) and centrality (0-92%) selections for charged hadrons from dijets in Au+Au collisions at root s(NN) = 200 GeV. With increasing p(T), the away-side Delta phi distribution evolves from a broad and relatively flat shape to a concave shape, then to a convex shape. Comparisons with p + p data suggest that the away-side distribution can be divided into a partially suppressed "head" region centered at Delta phi similar to pi, and an enhanced "shoulder" region centered at Delta phi similar to pi +/- 1.1. The p(T) spectrum for the associated hadrons in the head region softens toward central collisions. The spectral slope for the shoulder region is independent of centrality and trigger p(T). The properties of the near-side distributions are also modified relative to those in p + p collisions, reflected by the broadening of the jet shape in Delta phi and Delta eta, and an enhancement of the per-trigger yield. However, these modifications seem to be limited to p(T)less than or similar to 4 GeV/c, above which both the hadron pair shape and per-trigger yield become similar to p + p collisions. These observations suggest that both the away- and near-side distributions contain a jet fragmentation component which dominates for p(T) greater than or similar to 5 GeV/c and a medium-induced component which is important for p(T) less than or similar to 4 GeV/c. We also quantify the role of jets at intermediate and low p(T) through the yield of jet-induced pairs in comparison with binary scaled p + p pair yield. The yield of jet-induced pairs is suppressed at high pair proxy energy (sum of the p(T) magnitudes of the two hadrons) and is enhanced at low pair proxy energy. The former is consistent with jet quenching; the latter is consistent with the enhancement of soft hadron pairs due to transport of lost energy to lower p(T).

Published
2008

26. Quantitative constraints on the transport properties of hot partonic matter from semi-inclusive single high transverse momentum pion suppression in Au+Au collisions atsNN=200GeV

Author

M. Issah, M. D. Malik, E. Vznuzdaev, A. Hadj Henni, K. Boyle, Wei Xie, L. Aphecetche, Johannes Peter Wessels, P. Tarján, Senta Greene, Youngil Kwon, M. Groose Perdekamp, A. V. Kazantsev, H. Kanou, Taku Gunji, H. Gong, J. Seele, B. E. Norman, E. O'Brien, R. A. Soltz, P. Mikeš, F. Kajihara, H. Delagrange, Yoichiro Fukao, K. Das, J. Chiba, T. C. Awes, T. Liška, Jun Kikuchi, E. P. Hartouni, Y. L. Yamaguchi, H. Pei, G. C. Mishra, Tadaaki Isobe, J. S. Chai, S. Zhou, B. Komkov, Takao Sakaguchi, C. Klein-Boesing, M. Rosati, M. Gonin, P. L. McGaughey, Norio Saito, M. A. L. Leite, A. D. Frawley, T. Tabaru, S. Afanasiev, A. Ster, Y. S. Kim, D. Winter, S. H. Aronson, D. Yu Peressounko, M. Chiu, T. A. Shibata, H. Pereira, A. A. Vinogradov, Henrik Tydesjö, J. M. Burward-Hoy, W. Holzmann, Maya Hachiya Shimomura, Y. I. Makdisi, D. Hornback, Jiangyong Jia, Y. Goto, A. Kiss, Z. Yasin, Henner Buesching, C. L. Woody, R. S. Towell, J. G. Boissevain, M. Naglis, M. Heffner, V. Babintsev, Minghui Liu, C. L. Silva, Masashi Kaneta, I. Garishvili, Akio Kiyomichi, M. J. Tannenbaum, G. S. Kyle, A. Taranenko, D. Isenhower, J. L. Drachenberg, I. Ravinovich, N. Willis, James Alexander, A. Toia, Masayasu Ishihara, N. Kurihara, M. B. Deaton, C. Pinkenburg, W. C. Smith, L. Mašek, D. Mukhopadhyay, Kazushi Miki, S. Rembeczki, Marcus Hohlmann, R. Greiner De Cassagnac, S. P. Sorensen, Susumu Sato, Dylan Walker, H. A. Gustafsson, D. Bucher, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, M. Stepanov, G. Roche, Y. J. Mao, Y. Tanaka, Kenneth Francis Read, J. L. Charvet, Philippe Rosnet, M. G. Hur, C. Y. Chi, S. Kametani, D. Kawall, C. Zhang, T. L. Thomas, T. K. Shea, Anne Marie Sickles, Alexandre Lebedev, K. Tanida, M. K. Lee, K. Ozawa, J. H. Kang, S. Bathe, V. I. Kochetkov, Y. Nagata, J. G. Lajoie, D. M. Lee, K. Hasuko, T. E. Miller, E. T. Atomssa, Agneta Oskarsson, T. Hachiya, J. S. Haggerty, A. Romana, C. P. Singh, J. Murata, Viktor Riabov, B. M. Johnson, L. Tomášek, Y. Berdnikov, Gerd Joachim Kunde, G. R. Young, P. Chung, I. J. Choi, J. Imrek, A. Kravitz, Hiroyuki Okada, Hiroaki Ohnishi, S. Batsouli, Y. Akiba, A. Isupov, C. Suire, V. S. Pantuev, I. Shein, M. Holmes, M. Mishra, S. Nagamiya, Joakim Nystrand, Kazuhiro Tanaka, Ryugo S. Hayano, J. Sziklai, M. Harvey, W. S. Emam, E. H. Kim, F. Staley, L. Baksay, Brian Cole, Eva Haslum, B. Lenzi, S. S. Ryu, Jan Rak, Vaclav Vrba, O. Dietzsch, H. Valle, Klaus Johannes Reygers, Y. S. Lai, T. Ichihara, Alberto Baldisseri, A. Deshpande, M. C. McCain, Junji Tojo, Y. Riabov, Matthew G. Reuter, J. Gosset, Charles Maguire, A. Adare, Saskia Mioduszewski, S. Leckey, A. P.T. Palounek, Takahiro Fusayasu, J. P. Sullivan, K. O. Eyser, K. Fujiwara, I. D. Ojha, Alexander Malakhov, K. Okada, S. Esumi, B. Sahlmueller, Kenta Shigaki, Josh Moss, M. Nguyen, D. Silvermyr, H. En'yo, W. A. Zajc, Xingguo Li, P. Constantin, M. J. Leitch, I. Younus, E. Kistenev, Julia Velkovska, L. S. Zolin, W. J. Park, V. Baublis, A. Denisov, V. Cianciolo, M. Mitrovski, J. Jin, E. M. Takagui, Mate Csanad, A. Soldatov, Sergey Fokin, P. D. Barnes, A. Yanovich, H. W. Van Hecke, R. Bennett, T. Horaguchi, H. Harada, S. N. White, Tae-Yeon Lee, K. S. Sim, Y. Watanabe, Xiao-yan Li, A. S. Nyanin, K. Nakano, S. Yokkaichi, J. M. Heuser, W. E. Sondheim, M. Wysocki, P. A. Rukoyatkin, S. Y. Fung, Martin Purschke, Ahmed Al-Jamel, F. Gastineau, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, E. J. Desmond, F. Matathias, M. Finger, Kensuke Homma, David D'Enterria, François Fleuret, B. Forestier, J. E. Frantz, M. Togawa, H. Hiejima, Robert F. Hobbs, S. Chernichenko, J. Park, H. Lim, Florian Bauer, B. Bassalleck, R. P. Pisani, M. Konno, D. Kotchetkov, Y. Tsuchimoto, Y. Nakamiya, Debashish Pal, G. Baksay, K. Imai, A. Morreale, Nikolay Tyurin, S. Sawada, M. T. Bjorndal, I. E. Yushmanov, Herve Borel, D. Lynch, J. Ying, A. Franz, Z. Fraenkel, M. N. Wagner, R. Vértesi, J. T. Mitchell, A. Glenn, A. Shevel, S. Butsyk, R. Seidl, B. Espagnon, Vladislav Manko, X. He, M. Slunečka, T. Hester, S. F. Pate, Vladimir Samsonov, B. Azmoun, A. Král, M. J. Kweon, I. Otterlund, O. O. Omiwade, V. L. Rykov, T. Dahms, Jason Newby, H. Al-Bataineh, X. R. Wang, Y. Le Bornec, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, V-N. Tram, Tamas Ferenc Csorgo, Alexei Khanzadeev, E. Stenlund, O. Zaudtke, I. V. Sourikova, J. L. Nagle, H. Sakata, Motoi Inaba, V. Papavassiliou, M. Oka, Sébastien Gadrat, V. Peresedov, M. Virius, A. Dion, C. Silvestre, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, T. V. Moukhanova, M. Ouchida, Atsushi Taketani, A. Enokizono, Y. Cobigo, S. Belikov, K. S. Joo, J. Asai, Shingo Sakai, Roy A. Lacey, Rushan Han, M. N. Hagiwara, D. Sharma, H. Masui, A. K. Dubey, A. A. Bickley, S. Takagi, K. N. Barish, D. E. Fields, B. V. Jacak, M. McCumber, A. K. Purwar, M. L. Brooks, S. Kelly, Alexander Milov, N. N. Ajitanand, I. Nakagawa, B. Love, O. Drapier, Frank Ellinghaus, Takahiro Nakamura, Marie Germain, Susumu Oda, E. R. Kinney, T. Shohjoh, A. Durum, D. P. Morrison, S. Campbell, D. S. Brown, V. E. Semenov, A. G. Litvinenko, J. Zimányi, Tatsuya Chujo, I. Tserruya, Yu. Efremenko, V. Singh, Hirohiko Sato, S. K. Tuli, K. Dehmelt, Jen-Chieh Peng, Dong Jo Kim, Osamu Jinnouchi, A. Kozlov, R. Seto, K. Haruna, V. Dzhordzhadze, R. Pak, N. Kamihara, R. Armendariz, Kazuyoshi Kurita, A. Drees, J. Kubart, J. Egdemir, C. R. Cleven, Jason Kamin, C. Haegemann, Y. Inoue, S. P. Stoll, P. J. Kroon, Dong-Hun Kim, S. S.E. Rosendahl, G. Bunce, Steven E. Skutnik, A. Churyn, D. Jouan, H. Qu, Hideki Hamagaki, K. Aoki, G. David, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, N. Grau, K. Shoji, L. Kochenda, P. W. Stankus, and T. Kawagishi

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Opacity, 010308 nuclear & particles physics, Transport coefficient, Charge density, Parton, 01 natural sciences, Standard deviation, Nuclear physics, Pion, 0103 physical sciences, Transverse momentum, Nuclear Experiment, 010306 general physics
Abstract

The PHENIX experiment has measured the suppression of semi-inclusive single high-transverse-momentum pi(0)'s in Au+Au collisions at root s(NN) = 200 GeV. The present understanding of this suppression is in terms of energy loss of the parent (fragmenting) parton in a dense color-charge medium. We have performed a quantitative comparison between various parton energy-loss models and our experimental data. The statistical point-to-point uncorrelated as well as correlated systematic uncertainties are taken into account in the comparison. We detail this methodology and the resulting constraint on the model parameters, such as the initial color-charge density dN(g)/dy, the medium transport coefficient , or the initial energy-loss parameter epsilon(0). We find that high-transverse-momentum pi(0) suppression in Au+Au collisions has sufficient precision to constrain these model-dependent parameters at the +/- 20-25% (one standard deviation) level. These constraints include only the experimental uncertainties, and further studies are needed to compute the corresponding theoretical uncertainties.

Published
2008

27. Source Breakup Dynamics inAu+AuCollisions atsNN=200 GeVvia Three-Dimensional Two-Pion Source Imaging

Author

K. Boyle, Wei Xie, I. Ravinovich, M. Rosati, Mate Csanad, Steven E. Skutnik, R. Vértesi, A. Kiss, Robert F. Hobbs, E. H. Kim, Henner Buesching, C. L. Woody, K. S. Sim, I. Tserruya, Marie Germain, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, R. S. Towell, H. Qu, R. A. Soltz, J. Chiba, Martin Purschke, F. Gastineau, Akio Kiyomichi, Y. Nagata, Hideki Hamagaki, K. Aoki, G. David, Jiangyong Jia, Y. Goto, M. Chiu, Y. Tanaka, T. K. Shea, Y. Watanabe, Yu. Efremenko, V. Singh, T. Ichihara, Matthew G. Reuter, K. Hasuko, A. G. Litvinenko, T. A. Shibata, G. C. Mishra, H. A. Gustafsson, N. Kurihara, S. S. Ryu, Youngil Kwon, I. D. Ojha, D. Kotchetkov, Alexander Malakhov, Debashish Pal, M. Grosse Perdekamp, H. Hiejima, David D'Enterria, C. Zhang, Takao Sakaguchi, M. G. Hur, C. Y. Chi, Kensuke Homma, C. R. Cleven, C. Klein-Boesing, S. Sawada, A. Kozlov, D. Silvermyr, M. Naglis, S. Bathe, Agneta Oskarsson, S. Chernichenko, R. Seto, Hiroyuki Okada, C. L. Silva, D. Isenhower, L. S. Zolin, Jason Newby, H. Lim, K. Haruna, R. Bennett, Y. Berdnikov, R. P. Pisani, A. D. Frawley, S. Kelly, P. J. Kroon, T. Tabaru, N. N. Ajitanand, W. J. Park, Y. Akiba, K. Imai, A. Franz, C. P. Singh, V. S. Pantuev, F. Staley, B. Bassalleck, S. Nagamiya, Kazuhiro Tanaka, Joakim Nystrand, B. M. Johnson, Charles Maguire, Ahmed Al-Jamel, V. Dzhordzhadze, Z. Fraenkel, M. Konno, Klaus Johannes Reygers, Nikolay Tyurin, Eva Haslum, M. Harvey, B. Komkov, A. Isupov, S. Leckey, Takahiro Nakamura, O. Dietzsch, Hirohiko Sato, S. K. Tuli, X. He, O. O. Omiwade, K. Das, J. E. Frantz, N. Grau, Jan Rak, M. N. Wagner, P. D. Barnes, A. Yanovich, Junji Tojo, Viktor Riabov, J. Sziklai, K. Shoji, Taku Gunji, J. T. Mitchell, H. Valle, Josh Moss, Masayasu Ishihara, E. P. Hartouni, E. J. Desmond, S. H. Aronson, Brian Cole, Norio Saito, M. A. L. Leite, V. Peresedov, T. Shohjoh, A. Durum, S. N. White, Vladislav Manko, R. Granier de Cassagnac, F. Kajihara, Jen-Chieh Peng, K. Okada, M. Togawa, E. Kistenev, Julia Velkovska, Herve Borel, Susumu Sato, P. W. Stankus, J. Park, S. Afanasiev, B. Sahlmueller, H. En'yo, Saskia Mioduszewski, H. Delagrange, P. Constantin, D. S. Brown, W. Holzmann, S. Batsouli, A. Glenn, M. Gonin, Florian Bauer, A. Ster, M. J. Leitch, D. Winter, D. Yu Peressounko, S. Belikov, K. S. Joo, Maya Hachiya Shimomura, P. Tarján, J. M. Burward-Hoy, H. Masui, A. K. Dubey, V. Babintsev, V. L. Rykov, T. Dahms, D. E. Fields, H. Harada, H. W. Van Hecke, K. Tanida, J. Jin, G. S. Kyle, Y. I. Makdisi, Y. Tsuchimoto, B. V. Jacak, H. Pei, V. I. Kochetkov, Dong Jo Kim, E. M. Takagui, S. Takagi, N. Willis, James Alexander, M. C. McCain, W. E. Sondheim, Osamu Jinnouchi, H. Pereira, N. Kamihara, Y. S. Kim, V-N. Tram, W. C. Smith, K. N. Barish, R. Averbeck, O. Zaudtke, I. E. Yushmanov, A. K. Purwar, F. Matathias, J. Murata, Byung-Sik Hong, R. Armendariz, A. Bazilevsky, M. Wysocki, A. P.T. Palounek, M. K. Lee, K. Ozawa, Kazuyoshi Kurita, P. A. Rukoyatkin, M. Heffner, S. Y. Fung, C. Vale, Gerd Joachim Kunde, Philippe Rosnet, Alexei Khanzadeev, Motoi Inaba, A. Drees, J. L. Drachenberg, Christophe Pierre Suire, Alexander Milov, Senta Greene, T. E. Miller, Christine Angela Aidala, A. Taranenko, A. Enokizono, S. Esumi, S. P. Sorensen, E. Stenlund, M. J. Tannenbaum, Alexandre Lebedev, D. M. Lee, I. Shein, O. Drapier, D. Sharma, B. E. Norman, P. Chung, John Hill, W. A. Zajc, Y. Cobigo, M. Holmes, E. R. Kinney, D. P. Morrison, E. O'Brien, H. A. Torii, Alberto Baldisseri, A. Deshpande, M. L. Brooks, Anne Marie Sickles, S. F. Pate, V. Baublis, S. Campbell, B. Azmoun, Toru Sugitate, D. Mukhopadhyay, L. D. Isenhower, A. Denisov, V. Cianciolo, C. A. Ogilvie, V. E. Semenov, J. Zimányi, D. Bucher, M. J. Kweon, Sergey Fokin, T. K. Hemmick, Tatsuya Chujo, Yasuo Miake, J. G. Lajoie, T. Hachiya, M. T. Bjorndal, Y. Le Bornec, T. V. Moukhanova, François Fleuret, B. Forestier, X. R. Wang, T. Horaguchi, L. Kochenda, I. J. Choi, Hiroaki Ohnishi, T. Kawagishi, J. Egdemir, I. Younus, S. P. Stoll, V. Papavassiliou, Sébastien Gadrat, S. S.E. Rosendahl, G. Bunce, G. R. Young, D. Jouan, A. Soldatov, Xingguo Li, A. Dion, Atsushi Taketani, T. L. Thomas, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, M. Nguyen, A. S. Nyanin, I. V. Sourikova, Shingo Sakai, S. Kametani, J. H. Kang, J. S. Haggerty, A. Romana, M. Issah, M. D. Malik, E. Vznuzdaev, L. Aphecetche, J. G. Boissevain, Masashi Kaneta, Johannes Peter Wessels, C. Pinkenburg, M. Stepanov, G. Roche, J. Gosset, J. P. Sullivan, S. Yokkaichi, J. M. Heuser, Tadaaki Isobe, S. Butsyk, J. S. Chai, Vladimir Samsonov, P. L. McGaughey, I. Otterlund, A. V. Kazantsev, Yoichiro Fukao, T. C. Awes, Tamas Ferenc Csorgo, Minghui Liu, J. L. Nagle, Kenneth Francis Read, V. Bumazhnov, M. P. Comets, Roy A. Lacey, M. N. Hagiwara, and A. Hadj Henni

Subjects
Source function, Physics, Range (particle radiation), 010308 nuclear & particles physics, Dynamics (mechanics), General Physics and Astronomy, Breakup, 01 natural sciences, Nuclear physics, Correlation function (statistical mechanics), Pion, 0103 physical sciences, Transverse momentum, Atomic physics, Nuclear Experiment, 010306 general physics, Beam (structure)
Abstract

A three-dimensional correlation function obtained from midrapidity, low p(T), pion pairs in central Au+Au collisions at root s(NN) = 200 GeV is studied. The extracted model-independent source function indicates a long range tail in the directions of the pion pair transverse momentum (out) and the beam (long). A proper breakup time tau(0) similar to 9 fm/c and a mean proper emission duration Delta tau similar to 2 fm/c, leading to sizable emission time differences ( approximate to 12 fm/c), are required to allow models to be successfully matched to these tails. The model comparisons also suggest an outside-in "burning" of the emission source reminiscent of many hydrodynamical models.

Published
2008

28. Cold nuclear matter effects onJ/ψproduction as constrained by deuteron-gold measurements atsNN=200GeV

Author

V. I. Kochetkov, B. Khachaturov, S. C. Johnson, T. Matsumoto, J. Murata, B. Azmoun, A. Král, M. J. Kweon, K. Hasuko, M. Gonin, A. Shevel, Gerd Joachim Kunde, T. L. Thomas, V.N. Penev, T. Hester, Hiroyuki Okada, Y. Le Bornec, S. Esumi, Joakim Nystrand, Eva Haslum, B. Lenzi, M. Oka, I. Shein, R. A. Soltz, H. Borel, J. E. Frantz, C. H. Kuberg, J. Chiba, J. Gosset, J. P. Sullivan, H. Pereira, A. Dion, Ryugo S. Hayano, M. Grosse Perdekamp, J. M. Burward-Hoy, J. L. Charvet, Tae-Yeon Lee, Martin Purschke, W. A. Zajc, D. Kotchetkov, V-N. Tram, G. C. Mishra, A. Morreale, Z. Fraenkel, Atsushi Taketani, A. Enokizono, Y. Riabov, R. K. Choudhury, Kenta Shigaki, D. Lynch, M. Nguyen, A. Pierson, V. Baublis, K. S. Joo, A. Deshpande, L. Sanfratello, M. B. Deaton, A. Denisov, S. Afanasiev, A. Ster, E. H. Kim, A. S. Nyanin, M. K. Lee, K. Ozawa, T. E. Miller, E. T. Atomssa, Hiroaki Ohnishi, V. Cianciolo, Motoi Inaba, A. Glenn, D. Sharma, Takao Sakaguchi, C. Klein-Boesing, Minghui Liu, B. D. Fox, R. Santo, David Olle Rickard Silvermyr, Sergey Fokin, L. Tomášek, Mate Csanad, V. S. Pantuev, J. M. Qualls, P. Chung, A. D. Frawley, S. Butsyk, X. He, M. Harvey, O. O. Omiwade, Kenneth Francis Read, Y. Tanaka, Vladimir Samsonov, T. Horaguchi, I. Otterlund, Junji Tojo, T. Tabaru, A. Hoover, V. L. Rykov, T. Dahms, S. Yokkaichi, Youngil Kwon, I. Younus, J. M. Heuser, D. Winter, K. Okada, V. Peresedov, E. J. Desmond, D. Yu Peressounko, T. K. Shea, W. S. Emam, Jean-Pierre Cussonneau, B. Sahlmueller, H. En'yo, David D'Enterria, S. H. Aronson, S. Batsouli, P. Constantin, M. J. Leitch, R. S. Towell, H. Kanou, A. Devismes, Taku Gunji, H. Gong, J. Seele, D. Kawall, I. Ravinovich, M. Togawa, L. Aphecetche, Takeo Kawabata, M. C. McCain, J. Park, A. Soldatov, Y. J. Mao, P. Tarján, Sean A. Kelly, R. P. Pisani, F. Kajihara, A. V. Kazantsev, S. Kametani, W. Holzmann, Florian Bauer, D. Hornback, I. Garishvili, Akio Kiyomichi, Nikolay Tyurin, Viktor Veszpremi, Y. Nagata, H. Delagrange, H. Masui, A. K. Dubey, Xingguo Li, D. E. Fields, M. N. Wagner, Pàl Hidas, Anne Marie Sickles, M. Heffner, P. Mikeš, M. Naglis, A. A. Bickley, J. H. Kang, S. Takagi, J. S. Haggerty, C. L. Silva, J. L. Drachenberg, Y. Tsuchimoto, A. Romana, Maya Hachiya Shimomura, A. P.T. Palounek, S. Zhou, S. S. Ryu, N. Kurihara, A. Taranenko, Yoichiro Fukao, Tamas Ferenc Csorgo, K. N. Barish, I. V. Sourikova, H. Torii, B. V. Jacak, A. Baldisseri, I. E. Yushmanov, S. P. Sorensen, Y. I. Makdisi, Dylan Walker, T. C. Awes, T. Liška, Kazushi Miki, Masayasu Ishihara, Susumu Sato, Jun Kikuchi, Senta Greene, Tadaaki Isobe, L. Baksay, M. Muniruzzaman, Alexei Khanzadeev, N. Bruner, E. Stenlund, J. L. Nagle, H. Sakata, H. A. Gustafsson, M. Ouchida, M. Chiu, Ajit Kumar Mohanty, T. J. Uam, C. Y. Chi, F. Staley, T. A. Shibata, G. R. Young, Johannes Peter Wessels, M. J. Tannenbaum, B. E. Norman, R. Bennett, E. O'Brien, C. Zhang, J. Asai, J. G. Lajoie, Charles Maguire, S. Leckey, T. Hachiya, M. L. Brooks, M. McCumber, A. K. Purwar, Xiao-yan Li, V. V. Ikonnikov, Y. S. Lai, Ahmed Al-Jamel, M. Finger, A. G. Hansen, B. Love, Shingo Sakai, I. J. Choi, A. Kravitz, Marie Germain, D. Mukhopadhyay, S. Rembeczki, T. V. Moukhanova, D. Isenhower, Viktor Riabov, Saskia Mioduszewski, O. Zaudtke, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Josh Moss, A. G. Litvinenko, A. Toia, L. Mašek, R. Vértesi, German Martinez, D. Bucher, J. G. Boissevain, Masashi Kaneta, Andry Malala Rakotozafindrabe, M. Virius, A. Kozlov, R. Seto, K. Katou, E. Kistenev, K. Haruna, Yves Roland Schutz, Ch. Finck, Jason Newby, K. S. Sim, C. Pinkenburg, Y. L. Yamaguchi, V. Dzhordzhadze, Y. Watanabe, J. Jin, W. C. Chang, H. Harada, E. M. Takagui, Y. Cobigo, M. Stepanov, G. Roche, H. Pei, Roy A. Lacey, M. Issah, B. Komkov, C. P. Singh, N. N. Ajitanand, Rushan Han, B. M. Johnson, Takahiro Nakamura, A. Isupov, C. Suire, H. J. Kim, J. Sziklai, Susumu Oda, Brian Cole, A. Durum, M. D. Malik, H. Hiejima, E. Vznuzdaev, Catherine Micaela Silvestre, D. S. Brown, K. Imai, Norio Saito, M. A. L. Leite, A. Hadj Henni, K. Boyle, Jan Rak, Wei Xie, R. Granier de Cassagnac, A. Adare, V. Babintsev, S. S. Adler, G. S. Kyle, N. Willis, James Alexander, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, Alexandre Lebedev, D. M. Lee, Xiaopeng Zong, M. Mitrovski, R. Pak, Ferenc Deák, N. Kamihara, M. Wysocki, R. Armendariz, Kazuyoshi Kurita, Robert F. Hobbs, A. Drees, J. Kubart, M. A. Volkov, Debashish Pal, S. Sawada, J. Ying, A. Franz, C. A. Ogilvie, B. Espagnon, T. K. Hemmick, Yasuo Miake, S. F. Pate, L. Kochenda, H. Al-Bataineh, X. R. Wang, C. R. Cleven, C. Haegemann, Y. Inoue, R. Kohara, J. Egdemir, V. Papavassiliou, Jason Kamin, Sébastien Gadrat, S. P. Stoll, P. J. Kroon, A. Kiss, S. S.E. Rosendahl, Dong-Hun Kim, G. Bunce, Z. Yasin, Henner Buesching, C. L. Woody, A. Churyn, D. Jouan, P. Chand, Marcus Hohlmann, Steven E. Skutnik, H. Kobayashi, S. Bathe, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, Vaclav Vrba, Klaus Johannes Reygers, K. O. Eyser, K. Fujiwara, H. W. Van Hecke, H. Qu, M. Inuzuka, Hideki Hamagaki, K. Aoki, G. David, I. Tserruya, Yu. Efremenko, V. Singh, G. B. Kim, Hirohiko Sato, K. Dehmelt, Jen-Chieh Peng, N. Grau, K. Shoji, Dong Jo Kim, Osamu Jinnouchi, Alexander Milov, I. Nakagawa, P. W. Stankus, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, S. Campbell, V. E. Semenov, J. Zimányi, Tatsuya Chujo, O. Dietzsch, H. Valle, K. Das, E. P. Hartouni, Dipanwita Dutta, T. Ichihara, Julia Velkovska, F. K. Wohn, M. Rosati, Y. Nakamiya, M. Velkovsky, Matthew G. Reuter, Takahiro Fusayasu, G. Baksay, I. D. Ojha, M. T. Bjorndal, A. A. Vinogradov, Henrik Tydesjö, Alexander Malakhov, Jiangyong Jia, Y. Goto, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, S. N. White, F. Matathias, Kensuke Homma, K. Nakano, W. E. Sondheim, S. Chernichenko, H. Lim, P. A. Rukoyatkin, S. Y. Fung, B. Bassalleck, John Hill, K. Oyama, Toru Sugitate, L. D. Isenhower, M. Konno, P. L. McGaughey, François Fleuret, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, S. Belikov, X. Camard, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, and K. Tanida

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Quarkonium, Nuclear matter, Breakup, 7. Clean energy, 01 natural sciences, Baryon, Nuclear physics, 0103 physical sciences, Rapidity, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

We present a new analysis of J/psi production yields in deuteron-gold collisions at root s(NN) =200 GeV using data taken from the PHENIX experiment in 2003 and previously published in S. S. Adler [Phys. Rev. Lett 96, 012304 (2006)]. The high statistics proton-proton J/psi data taken in 2005 are used to improve the baseline measurement and thus construct updated cold nuclear matter modification factors (R-dAu). A suppression of J/psi in cold nuclear matter is observed as one goes forward in rapidity (in the deuteron-going direction), corresponding to a region more sensitive to initial-state low-x gluons in the gold nucleus. The measured nuclear modification factors are compared to theoretical calculations of nuclear shadowing to which a J/psi (or precursor) breakup cross section is added. Breakup cross sections of sigma(breakup)=2.8(-1.4)(+1.7) (2.2(-1.5)(+1.6)) mb are obtained by fitting these calculations to the data using two different models of nuclear shadowing. These breakup cross-section values are consistent within large uncertainties with the 4.2 +/- 0.5 mb determined at lower collision energies. Projecting this range of cold nuclear matter effects to copper-copper and gold-gold collisions reveals that the current constraints are not sufficient to firmly quantify the additional hot nuclear matter effect.

Published
2008

29. Centrality dependence of charged hadron production in deuteron+gold and nucleon+gold collisions atsNN=200GeV

Author

D. E. Fields, T. E. Miller, B. V. Jacak, R. Santo, Jen-Chieh Peng, A. K. Purwar, B. D. Fox, P. Tarján, E. J. Desmond, Dong Jo Kim, Sean A. Kelly, M. Germain, Osamu Jinnouchi, S. C. Johnson, Viktor Veszpremi, S. Butsyk, Vladimir Samsonov, Jean-Pierre Cussonneau, I. Tserruya, M. Togawa, J. Park, Yu. Efremenko, S. Y. Fung, Florian Bauer, M. J. Kweon, G. B. Kim, J. Gosset, B. Khachaturov, J. P. Sullivan, T. Matsumoto, M. Chiu, Ajit Kumar Mohanty, K. Hasuko, Evert Stenlund, T. A. Shibata, J. L. Drachenberg, Senta Greene, Joakim Nystrand, S. F. Pate, K. Das, M. T. Bjorndal, John Hill, K. Oyama, E. P. Hartouni, S. Afanasiev, A. Ster, Y. Tanaka, T. K. Shea, Y. Le Bornec, M. Heffner, A. Taranenko, E. O'Brien, Toru Sugitate, Y. Tsuchimoto, Ferenc Deák, L. D. Isenhower, J. M. Burward-Hoy, M. Rosati, E. H. Kim, Jan Rak, Tamas Ferenc Csorgo, R. Granier de Cassagnac, D. Mukhopadhyay, D. Isenhower, German Martinez, T. L. Thomas, Y. Cobigo, N. Kamihara, N. N. Ajitanand, Hirohiko Sato, Maya Hachiya Shimomura, J. E. Frantz, S. Yokkaichi, I. E. Yushmanov, F. Matathias, R. Armendariz, Takahiro Nakamura, J. M. Heuser, H. Masui, F. Staley, M. Velkovsky, Charles Maguire, S. Leckey, V. Papavassiliou, Sébastien Gadrat, François Fleuret, Y. J. Kwon, Robert F. Hobbs, Y. J. Mao, A. Durum, Herve Borel, Motoi Inaba, A. Glenn, V. L. Rykov, Kensuke Homma, M. Inuzuka, Hideki Hamagaki, K. Aoki, X. He, G. David, S. Chernichenko, Ryugo S. Hayano, L. Sanfratello, Y. I. Makdisi, A. Devismes, F. Kajihara, H. Delagrange, J. L. Nagle, S. Kametani, Pàl Hidas, J. S. Haggerty, A. Romana, A. A. Vinogradov, Henrik Tydesjö, Y. Riabov, S. N. White, Kenta Shigaki, A. Kiss, Josh Moss, E. Kistenev, J. Velkovska, S. S. Adler, G. S. Kyle, Viktor Riabov, N. Willis, M. Grosse Perdekamp, A. Pierson, Henner Buesching, Mate Csanad, Anne Marie Sickles, James Alexander, S. Sawada, Zvi Hirsh Citron, I. Ravinovich, J. H. Kang, J. G. Lajoie, T. Hachiya, H. Lim, B. Bassalleck, A. Franz, S. Zhou, Jiangyong Jia, S. Batsouli, Ingvar Otterlund, A. Drees, Alexei Khanzadeev, Y. Goto, N. Bruner, R. Averbeck, D. S. Brown, A. G. Litvinenko, Byung-Sik Hong, S. S. Ryu, M. A. Volkov, A. Bazilevsky, I. J. Choi, W. Xie, W. E. Sondheim, P. Chand, M. Konno, David D'Enterria, Philippe Rosnet, P. L. McGaughey, B. Espagnon, A. Kozlov, Anders Oskarsson, Hiroaki Ohnishi, R. Seto, R. P. Pisani, Atsushi Taketani, M. J. Tannenbaum, H. Okada, D. M. Lee, C. Zhang, Xiaopeng Zong, H. Pei, V. Bumazhnov, M. P. Comets, V. S. Pantuev, B. A. Cole, T. Ichihara, Nikolay Tyurin, Ahmed Al-Jamel, G. R. Young, J. T. Mitchell, N. Grau, J. G. Boissevain, L. Aphecetche, F. K. Wohn, J. M. Qualls, Matthew G. Reuter, V. Dzhordzhadze, S. Takagi, A. V. Kazantsev, M. Harvey, B. Komkov, V. V. Ikonnikov, K. Katou, A. S. Nyanin, H. Kobayashi, Hans-Åke Gustafsson, S. Belikov, K. S. Joo, K. N. Barish, C. A. Ogilvie, C. Pinkenburg, I. D. Ojha, Junji Tojo, S. Bathe, Alexander Malakhov, H. J. Kim, Norio Saito, M. A. L. Leite, T. K. Hemmick, Vladislav Manko, Takeo Kawabata, M. C. McCain, A. P.T. Palounek, L. S. Zolin, M. Stepanov, W. J. Park, G. Roche, K. Okada, Y. Akiba, Yasuo Miake, V. N. Tram, D. Bucher, H. En'yo, M. Kaneta, O. Dietzsch, T. J. Uam, P. D. Barnes, A. Yanovich, P. Constantin, V. Babintsev, S. Nagamiya, Kazuhiro Tanaka, M. J. Leitch, Yoichiro Fukao, S. Esumi, P. W. Stankus, R. A. Soltz, Klaus Johannes Reygers, M. L. Brooks, Dipanwita Dutta, C. H. Kuberg, T. C. Awes, Kyoichiro Ozawa, J. Chiba, V. Peresedov, Jun Kikuchi, L. Kochenda, T. Chujo, S. Sorensen, W. A. Zajc, V. Baublis, Minghui Liu, G. C. Mishra, Ch. Finck, Jason Newby, X. Camard, Kenneth Francis Read, Xingguo Li, Takao Sakaguchi, Martin Purschke, A. Denisov, V. Cianciolo, W. C. Chang, R. Kohara, C. Klein-Boesing, Sergey Fokin, D. Kotchetkov, M. Gonin, A. D. Frawley, T. Horaguchi, H. W. Vanhecke, Christine Angela Aidala, Z. Fraenkel, S. H. Aronson, S. P. Stoll, R. K. Choudhury, C. L. Woody, V.N. Penev, A. Hoover, W. Holzmann, S. S.E. Rosendahl, G. Bunce, Roy A. Lacey, A. Lebedev, S. Sakai, K. Kurita, D. Jouan, H. Pereira, P. J. Kroon, I. V. Sourikova, H. Torii, A. G. Hansen, M. Issah, E. Vznuzdaev, X. R. Wang, Alexander Milov, O. Drapier, E. R. Kinney, D. P. Morrison, V. E. Semenov, J. Zimányi, A. Deshpande, K. Tanida, V. I. Kochetkov, D. Silvermyr, Gerd Joachim Kunde, I. Shein, Alberto Baldisseri, Y. Watanabe, A. Soldatov, C. L. Silva, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, Saskia Mioduszewski, Yves Roland Schutz, D. Pal, E. M. Takagui, R. S. Towell, Akio Kiyomichi, C. Y. Chi, B. M. Johnson, A. Isupov, K. S. Sim, H. Hiejima, and K. Imai

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Hadron, 01 natural sciences, 7. Clean energy, Spectral line, Charged particle, Nuclear physics, Pion, Deuterium, Yield (chemistry), 0103 physical sciences, Rapidity, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

We present transverse momentum (p(T)) spectra of charged hadrons measured in deuteron-gold and nucleon-gold collisions at root s(NN)=200 GeV for four centrality classes. Nucleon-gold collisions were selected by tagging events in which a spectator nucleon was observed in one of two forward rapidity detectors. The spectra and yields were investigated as a function of the number of binary nucleon-nucleon collisions, nu, suffered by deuteron nucleons. A comparison of charged particle yields to those in p+p collisions show that yield per nucleon-nucleon collision saturates with nu for high momentum particles. We also present the charged hadron to neutral pion ratios as a function of p(T).

Published
2008

30. Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions atsNN=200GeV: Jet quenching and the response of partonic matter

Author

T. Hester, A. Deshpande, M. Grosse Perdekamp, S. Esumi, D. Winter, M. P. Comets, I. Younus, D. Yu Peressounko, S. Butsyk, V-N. Tram, J. T. Mitchell, R. Seidl, Vladislav Manko, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, A. Soldatov, Vladimir Samsonov, I. Otterlund, J. M. Burward-Hoy, M. Chiu, Motoi Inaba, H. Pei, T. A. Shibata, P. Tarján, M. Slunečka, Sergey Fokin, F. Matathias, Tamas Ferenc Csorgo, Kensuke Homma, W. C. Smith, S. Chernichenko, H. Lim, B. Bassalleck, M. Mitrovski, M. Konno, J. L. Nagle, M. Gonin, R. S. Towell, M. K. Lee, K. Ozawa, A. Kiss, Z. Yasin, Henner Buesching, C. L. Woody, I. Garishvili, Akio Kiyomichi, J. Gosset, R. Vértesi, Senta Greene, D. Kawall, D. Isenhower, A. Toia, Mate Csanad, M. Wysocki, J. P. Sullivan, K. Tanida, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, Y. Nakamiya, T. Horaguchi, Y. L. Yamaguchi, B. Komkov, C. Silvestre, I. Ravinovich, H. Pereira, O. Dietzsch, H. Valle, S. Y. Fung, V. I. Kochetkov, Norio Saito, M. A. L. Leite, Marcus Hohlmann, B. E. Norman, E. O'Brien, L. Mašek, S. Kelly, Marisilvia Donadelli, V. Bumazhnov, L. Tomášek, N. Kurihara, Charles Maguire, S. Leckey, J. Murata, S. F. Pate, J. L. Charvet, Andry Malala Rakotozafindrabe, V. S. Pantuev, G. Baksay, M. T. Bjorndal, Josh Moss, Y. Nagata, Julia Velkovska, M. Rosati, M. Harvey, N. N. Ajitanand, Jason Newby, Takahiro Nakamura, I. Tserruya, Yu. Efremenko, V. Singh, A. V. Kazantsev, Gerd Joachim Kunde, S. Bathe, S. S. Ryu, H. Al-Bataineh, Agneta Oskarsson, X. He, O. O. Omiwade, John Hill, X. R. Wang, David D'Enterria, T. E. Miller, E. T. Atomssa, I. Shein, E. Kistenev, J. L. Drachenberg, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, Susumu Oda, Y. Berdnikov, H. A. Gustafsson, C. Zhang, H. A. Torii, Junji Tojo, V. Peresedov, Y. Akiba, M. G. Hur, C. Y. Chi, P. Chung, R. P. Pisani, Y. Le Bornec, H. Harada, Toru Sugitate, L. D. Isenhower, S. Yokkaichi, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, Jiangyong Jia, Y. Goto, S. P. Sorensen, M. Holmes, V. Babintsev, Dylan Walker, J. M. Heuser, T. Shohjoh, A. Durum, M. Issah, Youngil Kwon, V. Papavassiliou, Vaclav Vrba, Klaus Johannes Reygers, P. Mikeš, Sébastien Gadrat, G. S. Kyle, Nikolay Tyurin, M. N. Wagner, K. Okada, M. B. Deaton, B. Sahlmueller, H. En'yo, James Alexander, Anne Marie Sickles, R. Bennett, W. S. Emam, Robert F. Hobbs, E. J. Desmond, Viktor Riabov, K. O. Eyser, M. D. Malik, R. Averbeck, Byung-Sik Hong, K. Fujiwara, Alberto Baldisseri, M. Togawa, Ahmed Al-Jamel, P. Constantin, M. J. Leitch, Roy A. Lacey, Rushan Han, M. N. Hagiwara, François Fleuret, E. Vznuzdaev, B. Forestier, J. G. Lajoie, H. Masui, Y. Tanaka, A. K. Dubey, M. Finger, J. Park, T. Hachiya, A. A. Bickley, D. S. Brown, A. Bazilevsky, Philippe Rosnet, T. K. Shea, S. Batsouli, J. E. Frantz, S. N. White, Florian Bauer, I. J. Choi, A. Kravitz, H. Kanou, J. G. Boissevain, M. Naglis, Taku Gunji, H. Gong, J. Seele, Hiroaki Ohnishi, Masashi Kaneta, F. Kajihara, B. Love, D. E. Fields, Y. Tsuchimoto, Debashish Pal, B. V. Jacak, Alexandre Lebedev, Marie Germain, Herve Borel, D. M. Lee, S. Sawada, C. L. Silva, D. Lynch, F. Staley, L. Baksay, Saskia Mioduszewski, J. Ying, A. Franz, K. Nakano, A. Glenn, Yoichiro Fukao, I. E. Yushmanov, M. Ouchida, Alexei Khanzadeev, H. W. Van Hecke, M. McCumber, A. K. Purwar, N. Willis, K. Das, E. P. Hartouni, W. E. Sondheim, L. Aphecetche, E. Stenlund, Masayasu Ishihara, Hirohiko Sato, S. K. Tuli, M. C. McCain, C. Pinkenburg, H. Sakata, Susumu Sato, H. Delagrange, V. L. Rykov, T. Dahms, A. G. Litvinenko, P. A. Rukoyatkin, E. H. Kim, M. Stepanov, G. Roche, T. Ichihara, A. P.T. Palounek, J. Asai, Y. J. Mao, S. Kametani, G. R. Young, Matthew G. Reuter, Takahiro Fusayasu, Xingguo Li, A. Kozlov, O. Zaudtke, T. V. Moukhanova, I. D. Ojha, Alexander Malakhov, R. Seto, K. Haruna, Christophe Pierre Suire, Alexander Milov, J. H. Kang, J. S. Haggerty, D. Silvermyr, S. Zhou, M. Virius, A. Romana, Y. S. Kim, I. Nakagawa, Xiao-yan Li, L. S. Zolin, W. J. Park, V. Dzhordzhadze, S. Takagi, Johannes Peter Wessels, Shingo Sakai, P. D. Barnes, A. Yanovich, T. L. Thomas, T. C. Awes, T. Liška, K. N. Barish, A. Hadj Henni, Y. Cobigo, K. S. Sim, Y. Watanabe, O. Drapier, Frank Ellinghaus, J. Jin, H. Hiejima, E. R. Kinney, Y. S. Lai, D. P. Morrison, K. Imai, Jun Kikuchi, S. Campbell, Ryugo S. Hayano, K. Boyle, Wei Xie, E. M. Takagui, Jan Rak, R. Granier de Cassagnac, A. Adare, V. E. Semenov, J. Zimányi, Y. Riabov, Kenta Shigaki, C. P. Singh, B. M. Johnson, M. Nguyen, Tatsuya Chujo, A. S. Nyanin, A. Isupov, K. Dehmelt, Jen-Chieh Peng, J. Sziklai, Brian Cole, Dong Jo Kim, Osamu Jinnouchi, Minghui Liu, Kenneth Francis Read, I. V. Sourikova, Tadaaki Isobe, J. S. Chai, P. L. McGaughey, Steven E. Skutnik, H. Qu, Hideki Hamagaki, K. Aoki, G. David, N. Grau, K. Shoji, P. W. Stankus, S. Belikov, K. S. Joo, C. R. Cleven, C. Haegemann, Y. Inoue, P. J. Kroon, Dong-Hun Kim, D. Sharma, B. Azmoun, A. Král, M. J. Kweon, Maya Hachiya Shimomura, Y. I. Makdisi, M. J. Tannenbaum, M. Oka, D. Mukhopadhyay, S. Rembeczki, D. Bucher, J. Chiba, G. C. Mishra, A. Dion, Takao Sakaguchi, C. Klein-Boesing, A. D. Frawley, T. Tabaru, Atsushi Taketani, A. Enokizono, S. H. Aronson, W. Holzmann, Tae-Yeon Lee, Martin Purschke, F. Gastineau, D. Kotchetkov, A. Morreale, Z. Fraenkel, J. Egdemir, Jason Kamin, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, A. Churyn, D. Jouan, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, L. Kochenda, T. Kawagishi, S. Afanasiev, A. Ster, R. Pak, N. Kamihara, R. Armendariz, Kazuyoshi Kurita, A. Drees, J. Kubart, D. Hornback, M. Heffner, A. Taranenko, Kazushi Miki, K. Hasuko, Hiroyuki Okada, Joakim Nystrand, Eva Haslum, B. Lenzi, M. L. Brooks, A. Shevel, and R. A. Soltz

Subjects
Physics, Quenching, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Radiation, 01 natural sciences, Nuclear physics, Distribution (mathematics), Shoulder region, 0103 physical sciences, Transverse momentum, Spectral slope, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Jet quenching
Abstract

Azimuthal angle (Delta phi) correlations are presented for charged hadrons from dijets for 0.4 < p(T)< 10 GeV/c in Au+Au collisions at root s(NN)=200 GeV. With increasing p(T), the away-side distribution evolves from a broad and relatively flat shape to a concave shape, then to a convex shape. Comparisons to p+p data suggest that the away-side can be divided into a partially suppressed "head" region centered at Delta phi similar to pi and an enhanced "shoulder" region centered at Delta phi similar to pi +/- 1.1. The p(T) spectrum for the head region softens toward central collisions, consistent with the onset of jet quenching. The spectral slope for the shoulder region is independent of centrality and trigger p(T), which offers constraints on energy transport mechanisms and suggests that it contains the medium response to energetic jets.

Published
2008

31. Particle-species dependent modification of jet-induced correlations in Au+Au collisions at sqrt[s_{NN}]=200 GeV

Author

S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, T, Chujo, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, K, Das, G, David, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, D E, Fields, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, S-Y, Fung, S, Gadrat, F, Gastineau, M, Germain, A, Glenn, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, J S, Haggerty, M N, Hagiwara, H, Hamagaki, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, J M, Heuser, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, M G, Hur, T, Ichihara, K, Imai, M, Inaba, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, T, Kawagishi, A V, Kazantsev, S, Kelly, A, Khanzadeev, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, P J, Kroon, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, M J, Leitch, M A L, Leite, H, Lim, A, Litvinenko, M X, Liu, X H, Li, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, H, Masui, F, Matathias, M C, McCain, P L, McGaughey, Y, Miake, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, J T, Mitchell, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, T, Nakamura, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, O O, Omiwade, A, Oskarsson, I, Otterlund, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, V, Samsonov, H D, Sato, S, Sato, S, Sawada, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, S, Skutnik, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, J, Tojo, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, van Hecke, J, Velkovska, R, Vertesi, A A, Vinogradov, E, Vznuzdaev, M, Wagner, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, A, Yanovich, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, J, Zimányi, and L, Zolin

Abstract

Measurements in Au+Au collisions at sqrt[s_{NN}]=200 GeV of jet correlations for a trigger hadron at intermediate transverse momentum (p_{T,trig}) with associated mesons or baryons at lower p_{T,assoc} indicate strong modification of the away-side jet. The ratio of jet-associated baryons to mesons increases with centrality and p_{T,assoc}. For the most central collisions, the ratio is similar to that for inclusive measurements. This trend is incompatible with in-vacuum fragmentation but could be due to jetlike contributions from correlated soft partons, which recombine upon hadronization.

Published
2007

32. Measurement of single muons at forward rapidity inp+pcollisions ats=200 GeVand implications for charm production

Author

R. du Rietz, Josh Moss, M. Tamai, B. D. Fox, C. L. Silva, S. Afanasiev, E. Kistenev, A. Ster, J. Chiba, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, F. Staley, M. Sakai, J. T. Mitchell, Vladislav Manko, M. D. Marx, T. Chujo, X. Camard, A. Parmar, Christine Angela Aidala, J. S. Chai, Norio Saito, F. Messer, D. Hornback, G. C. Mishra, Takao Sakaguchi, C. Klein-Boesing, I. Tserruya, Yu. Efremenko, R. A. Soltz, M. Grosse Perdekamp, K. Tanida, V. I. Kochetkov, M. Heffner, O. Dietzsch, A. D. Frawley, V. Singh, G. B. Kim, D. Koehler, V. S. Pantuev, L. Aphecetche, S. Kametani, P. L. McGaughey, G. Gogiberidze, M. Harvey, S. Bathe, S. H. Aronson, K. A. Drees, Kensuke Homma, E. Melnikov, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, Hirohiko Sato, E. J. Desmond, V. Bumazhnov, Dipanwita Dutta, Junji Tojo, S. K. Tuli, A. G. Hansen, Shingo Sakai, W. Holzmann, Alberto Baldisseri, Jen-Chieh Peng, M. Hibino, Y. Tanaka, T. K. Shea, J. M. Burward-Hoy, J. Park, J. E. Frantz, J. H. Kang, T. L. Thomas, J. S. Haggerty, Julia Velkovska, A. Romana, R. S. Towell, V. Babintsev, K. Okada, Y. I. Makdisi, Y. Watanabe, Hiroaki Ohnishi, B. Khachaturov, J. B. Choi, M. Chiu, Ajit Kumar Mohanty, T. Matsumoto, Dong Jo Kim, Osamu Jinnouchi, H. En'yo, P. Constantin, M. J. Leitch, David Olle Rickard Silvermyr, N. N. Ajitanand, J. Milan, Herve Borel, Ryugo S. Hayano, T. A. Shibata, A. Soldatov, R. Amirikas, Y. Riabov, M. Rosati, S. Garpman, K. Kiyoyama, M. Velkovsky, H. Tsuruoka, I. E. Yushmanov, Alexander Milov, Kenta Shigaki, A. Glenn, Shih-Chang Lee, E. H. Kim, W. C. Chang, E. P. Hartouni, B. K. Nandi, O. Drapier, H. A. Gustafsson, Joakim Nystrand, M. J. Tannenbaum, D. P. Morrison, David D'Enterria, V. E. Semenov, Minghui Liu, H. J. Kim, V. V. Ikonnikov, A. S. Nyanin, Takahiro Nakamura, M. Issah, A. A. Vinogradov, Henrik Tydesjö, Y. J. Kwon, Roy A. Lacey, D. Isenhower, K. S. Sim, R. P. Pisani, P. Tarján, Sean A. Kelly, D. Bucher, Jiangyong Jia, Y. Goto, R. E. Mischke, C. Zhang, L. Villatte, M. E. Sadler, Jason Newby, L. Sanfratello, Viktor Veszpremi, E. Vznuzdaev, S. Borenstein, German Martinez, Kenneth Francis Read, S. Butsyk, N. Hayashi, J. Murata, Alexei Khanzadeev, Nikolay Tyurin, A. Durum, C. L. Woody, T. Shiina, N. Bruner, A. Devismes, E. Stenlund, J. G. Boissevain, Vladimir Samsonov, I. Otterlund, S. S. Adler, G. S. Kyle, James Alexander, R. Azmoun, Senta Greene, K. Katou, H. Buesching, Y. Liu, Viktor Riabov, C. Y. Chi, M. Nara, H. Delagrange, D. S. Brown, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Wei Xie, Xingguo Li, Philippe Rosnet, N. Kamihara, A. Kiyomichi, Alexandre Lebedev, E. O'Brien, D. Mukhopadhyay, C. Pinkenburg, A. Deshpande, M. Kopytine, S. Batsouli, S. Zhou, J. L. Nagle, T. C. Awes, Y. Cobigo, Kyoichiro Ozawa, Jun Kikuchi, I. V. Sourikova, H. Torii, D. M. Lee, M. Stepanov, I. Ravinovich, D. E. Fields, S. P. Sorensen, B. V. Jacak, F. Plasil, G. Roche, T. Kohama, F. Matathias, Peter M. Nilsson, K. Imai, A. K. Purwar, S. S. Ryu, Y. Yang, J. Gosset, C. P. Singh, J. P. Sullivan, J. G. Lajoie, T. Hachiya, A. P.T. Palounek, T. E. Miller, R. Santo, I. J. Choi, A. Enokizono, S. Esumi, V. Ladygin, M. Gonin, Jan Rak, B. M. Johnson, K. Kurita, S. Yokkaichi, M. Sivertz, J. M. Heuser, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, W. Guryn, Sergey Fokin, S. F. Pate, R. Granier de Cassagnac, A. Hoover, A. Isupov, A. Drees, X. R. Wang, Brian Cole, T. Peitzmann, V. Papavassiliou, Saskia Mioduszewski, S. Sawada, J. D. Tepe, A. Franz, Yves Roland Schutz, S. S. Kapoor, Hideki Hamagaki, G. David, D. Pal, G. R. Young, E. M. Takagui, C. H. Kuberg, S. P. Stoll, G. Bunce, D. Jouan, M. A. Volkov, C. A. Ogilvie, N. Grau, T. K. Hemmick, Yasuo Miake, L. Kochenda, Y. Kuroki, W. Y. Jang, P. W. Stankus, K. N. Barish, Do-Won Kim, P. J. Kroon, Dong-Hun Kim, M. Ono, M. L. Brooks, X. He, V. Peresedov, H. Masui, A. G. Litvinenko, A. Kozlov, R. Seto, Martin Purschke, D. Kotchetkov, S. Bhagavatula, Z. Fraenkel, R. K. Choudhury, S. C. Johnson, Y. J. Mao, M. J. Kweon, Atsushi Taketani, V.A. Onuchin, S. Belikov, K. S. Joo, K. El Chenawi, M. R. Shaw, P. Chand, H. Kobayashi, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, S. Y. Fung, H. W. Van Hecke, John Hill, K. Oyama, Toru Sugitate, François Fleuret, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, A. Yanovich, S. N. White, W. E. Sondheim, Charles Maguire, and S. Leckey

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Perturbative QCD, 7. Clean energy, 01 natural sciences, Particle identification, Charm quark, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Charm (quantum number), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

Muon production at forward rapidity (1.5

Published
2007

33. Detailed study of high-pTneutral pion suppression and azimuthal anisotropy inAu+Aucollisions atsNN=200GeV

Author

Shih-Chang Lee, S. Afanasiev, K. S. Sim, A. Ster, V. S. Pantuev, M. Harvey, J. S. Chai, E. H. Kim, Junji Tojo, E. J. Desmond, T. Ichihara, F. Messer, M. Heffner, S. S. Adler, G. S. Kyle, P. L. McGaughey, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, M. Rosati, T. L. Thomas, K. Imai, James Alexander, M. Hibino, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, K. Okada, J. Park, Alexandre Lebedev, J. M. Burward-Hoy, S. C. Johnson, K. Tanida, I. D. Ojha, Alexander Malakhov, D. M. Lee, S. Esumi, M. Velkovsky, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, N. Kamihara, R. A. Soltz, H. Borel, Y. J. Mao, M. J. Kweon, H. En'yo, P. Constantin, Norio Saito, M. J. Leitch, F. Matathias, N. Grau, Jen-Chieh Peng, J. Chiba, H. Tsuruoka, M. Sakai, M. Grosse Perdekamp, L. S. Zolin, J. G. Boissevain, A. Drees, A. A. Vinogradov, Henrik Tydesjö, P. D. Barnes, Y. Berndnikov, Ryugo S. Hayano, G. C. Mishra, P. W. Stankus, K. Katou, Jiangyong Jia, A. Yanovich, Y. Yang, C. P. Singh, R. Azmoun, V. I. Kochetkov, M. A. Volkov, K. Kiyoyama, V. Babinstev, B. K. Nandi, Y. Goto, W. A. Zajc, Takao Sakaguchi, C. Klein-Boesing, S. Y. Fung, Y. J. Kwon, A. Kiyomichi, C. Pinkenburg, Dong Jo Kim, Osamu Jinnouchi, Jan Rak, G. Gogiberidze, C. A. Ogilvie, Y. Tanaka, T. K. Shea, L. Sanfratello, D. E. Fields, B. V. Jacak, T. K. Hemmick, B. D. Fox, B. M. Johnson, A. D. Frawley, V. Baublis, A. Denisov, V. Cianciolo, D. Isenhower, Y. Riabov, S. Borenstein, P. Chand, A. Isupov, W. Guryn, David Olle Rickard Silvermyr, D. Mukhopadhyay, John Hill, K. Oyama, R. Granier de Cassagnac, M. Stepanov, G. Roche, I. Tserruya, R. Amirikas, I. E. Yushmanov, Yasuo Miake, J. T. Mitchell, Yu. Efremenko, L. Kochenda, B. Khachaturov, A. K. Purwar, Sergey Fokin, S. H. Aronson, Toru Sugitate, Do-Won Kim, P. J. Kroon, Y. Cobigo, J. Gosset, J. P. Sullivan, German Martinez, V. Singh, Y. Kuroki, W. Y. Jang, Vladislav Manko, J. E. Frantz, T. Matsumoto, Dong-Hun Kim, Brian Cole, R. S. Towell, Kenta Shigaki, François Fleuret, G. B. Kim, D. Koehler, W. Holzmann, M. D. Marx, A. Hoover, Y. I. Makdisi, S. Garpman, P. Tarján, Sean A. Kelly, Viktor Veszpremi, S. N. White, S. P. Stoll, O. Dietzsch, Atsushi Taketani, Joakim Nystrand, T. Chujo, V.A. Onuchin, S. Belikov, K. S. Joo, K. A. Drees, Hirohiko Sato, G. Bunce, S. F. Pate, N. N. Ajitanand, H. A. Gustafsson, C. L. Silva, A. S. Nyanin, A. Glenn, N. Hayashi, S. Yokkaichi, J. M. Heuser, S. K. Tuli, X. Camard, Takahiro Nakamura, T. E. Miller, Dipanwita Dutta, D. Jouan, R. E. Mischke, C. Zhang, X. R. Wang, Hideki Hamagaki, G. David, W. E. Sondheim, G. R. Young, C. Y. Chi, S. Kametani, Alexei Khanzadeev, A. Parmar, Alexander Milov, I. Ravinovich, H. Kobayashi, Masayasu Ishihara, H. J. Kim, C. H. Kuberg, M. E. Sadler, N. Bruner, E. Stenlund, Agneta Oskarsson, Julia Velkovska, A. Durum, V. Papavassiliou, F. Plasil, J. H. Kang, J. S. Haggerty, A. Romana, R. Santo, Senta Greene, O. Drapier, Christine Angela Aidala, Susumu Sato, L. Villatte, A. Enokizono, M. Muniruzzaman, Y. Akiba, D. S. Brown, M. Nara, T. Peitzmann, M. J. Tannenbaum, Viktor Riabov, Saskia Mioduszewski, S. Bathe, S. S. Ryu, D. P. Morrison, J. B. Choi, S. Nagamiya, Kazuhiro Tanaka, Charles Maguire, F. Staley, S. Leckey, Klaus Johannes Reygers, Yves Roland Schutz, Kensuke Homma, V. E. Semenov, S. Batsouli, S. Sawada, J. D. Tepe, R. du Rietz, Josh Moss, A. Franz, E. O'Brien, S. Zhou, S. S. Kapoor, E. Melnikov, V. V. Ikonnikov, D. Pal, E. P. Hartouni, M. Tamai, E. Kistenev, S. Chernichenko, K. El Chenawi, M. R. Shaw, E. M. Takagui, H. Lim, David D'Enterria, A. Devismes, B. Bassalleck, F. Mühlbacher, Y. Watanabe, L. Ewell, Martin Purschke, D. Bucher, R. P. Pisani, A. P.T. Palounek, H. W. Van Hecke, H. Delagrange, Jason Newby, A. G. Hansen, Shingo Sakai, D. Kotchetkov, S. Bhagavatula, Nikolay Tyurin, Z. Fraenkel, M. Kopytine, J. Murata, C. L. Woody, A. Baldisseri, A. Soldatov, R. K. Choudhury, I. V. Sourikova, H. Torii, Hiroaki Ohnishi, J. Milan, X. He, S. Butsyk, V. Peresedov, Vladimir Samsonov, I. Otterlund, H. Buesching, Xingguo Li, V. Ladygin, M. Gonin, J. L. Nagle, T. Kohama, V. Bumazhnov, K. Kurita, H. Masui, M. Sivertz, W. C. Chang, Roy A. Lacey, S. P. Sorensen, Peter M. Nilsson, A. G. Litvinenko, J. G. Lajoie, T. Hachiya, I. J. Choi, A. Kozlov, R. Seto, K. N. Barish, M. Ono, Wei Xie, M. L. Brooks, A. Deshpande, M. Issah, E. Vznuzdaev, T. C. Awes, Kyoichiro Ozawa, T. Shiina, Jun Kikuchi, Yi Liu, L. Aphecetche, Minghui Liu, and Kenneth Francis Read

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Plane (geometry), media_common.quotation_subject, Parton, 01 natural sciences, Asymmetry, Delta baryon, Nuclear physics, Pion, Yield (chemistry), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Anisotropy, Scaling, media_common
Abstract

Measurements of neutral pion (pi(0)) production at midrapidity in root s(NN)=200 GeV Au+Au collisions as a function of transverse momentum, p(T), collision centrality, and angle with respect to reaction plane are presented. The data represent the final pi(0) results from the PHENIX experiment for the first RHIC Au+Au run at design center-of-mass energy. They include additional data obtained using the PHENIX Level-2 trigger with more than a factor of 3 increase in statistics over previously published results for p(T)>6 GeV/c. We evaluate the suppression in the yield of high-p(T) pi(0)'s relative to pointlike scaling expectations using the nuclear modification factor R-AA. We present the p(T) dependence of R-AA for nine bins in collision centrality. We separately integrate R-AA over larger p(T) bins to show more precisely the centrality dependence of the high-p(T) suppression. We then evaluate the dependence of the high-p(T) suppression on the emission angle Delta phi of the pions with respect to event reaction plane for seven bins in collision centrality. We show that the yields of high-p(T) pi(0)'s vary strongly with Delta phi, consistent with prior measurements 1,2. We show that this variation persists in the most peripheral bin accessible in this analysis. For the peripheral bins we observe no suppression for neutral pions produced aligned with the reaction plane, whereas the yield of pi(0)'s produced perpendicular to the reaction plane is suppressed by a factor of similar to 2. We analyze the combined centrality and Delta phi dependence of the pi(0) suppression in different p(T) bins using different possible descriptions of parton energy loss dependence on jet path-length averages to determine whether a single geometric picture can explain the observed suppression pattern.

Published
2007

34. Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions atsNN=200GeV

Author

M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, K. Kiyoyama, Y. Yang, C. P. Singh, Hiroaki Ohnishi, N. N. Ajitanand, B. K. Nandi, Jen-Chieh Peng, S. Kametani, Takahiro Nakamura, B. M. Johnson, J. Milan, V.A. Onuchin, M. E. Sadler, D. Isenhower, A. Toia, H. J. Kim, I. V. Sourikova, H. Torii, A. Durum, J. T. Mitchell, D. E. Fields, B. V. Jacak, S. Butsyk, Vladimir Samsonov, Yi Liu, A. K. Purwar, A. Isupov, D. S. Brown, I. Otterlund, German Martinez, R. Azmoun, J. H. Kang, J. S. Haggerty, A. Romana, Norio Saito, R. A. Soltz, H. Borel, David D'Enterria, Brian Cole, L. Villatte, Do-Won Kim, P. J. Kroon, Vladislav Manko, Dong Jo Kim, Alexei Khanzadeev, S. Belikov, K. S. Joo, Osamu Jinnouchi, Dong-Hun Kim, S. Batsouli, L. Aphecetche, M. D. Marx, M. Grosse Perdekamp, N. Bruner, E. Stenlund, D. Mukhopadhyay, S. P. Stoll, Charles Maguire, S. Leckey, A. Devismes, R. P. Pisani, O. Dietzsch, B. D. Fox, V. Babintsev, J. L. Nagle, A. G. Hansen, H. Buesching, K. N. Barish, K. Tanida, T. Chujo, T. Peitzmann, Saskia Mioduszewski, Y. Cobigo, V. I. Kochetkov, G. Bunce, I. Ravinovich, I. Tserruya, Yu. Efremenko, X. Camard, Shingo Sakai, R. du Rietz, Josh Moss, J. Gosset, E. H. Kim, M. Ono, M. Tamai, Nikolay Tyurin, H. Kobayashi, A. Parmar, J. Chiba, F. Plasil, V. Singh, Dipanwita Dutta, M. Sakai, H. Delagrange, D. Jouan, J. P. Sullivan, A. P.T. Palounek, T. Kohama, E. Kistenev, Xingguo Li, T. L. Thomas, Christine Angela Aidala, Yves Roland Schutz, David Olle Rickard Silvermyr, G. B. Kim, D. Koehler, K. A. Drees, Youngil Kwon, G. R. Young, S. S. Ryu, S. Bathe, Julia Velkovska, S. Esumi, Agneta Oskarsson, M. Kopytine, D. Pal, S. Zhou, B. Khachaturov, G. C. Mishra, Ryugo S. Hayano, M. L. Brooks, Y. Riabov, Hideki Hamagaki, G. David, C. H. Kuberg, Kenta Shigaki, E. M. Takagui, Kensuke Homma, A. Baldisseri, N. Kamihara, V. S. Pantuev, S. Yokkaichi, Y. Berdnikov, J. M. Heuser, W. A. Zajc, X. He, R. S. Towell, E. Melnikov, S. S. Adler, G. S. Kyle, V. Bumazhnov, V. Baublis, M. Rosati, T. Matsumoto, A. S. Nyanin, A. Denisov, V. Cianciolo, S. Chernichenko, Y. Akiba, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, Sergey Fokin, S. P. Sorensen, P. Tarján, Sean A. Kelly, N. Grau, Peter M. Nilsson, F. Matathias, M. Harvey, A. Drees, J. E. Frantz, V. Peresedov, N. Hayashi, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, A. Hoover, Takao Sakaguchi, C. Klein-Boesing, A. D. Frawley, Hirohiko Sato, M. Velkovsky, Viktor Veszpremi, S. Nagamiya, S. Garpman, Philippe Rosnet, Kazuhiro Tanaka, Klaus Johannes Reygers, J. B. Choi, A. A. Vinogradov, Henrik Tydesjö, C. Y. Chi, Y. Tanaka, Alexandre Lebedev, T. E. Miller, W. C. Chang, Shih-Chang Lee, K. S. Sim, H. Masui, T. K. Shea, P. W. Stankus, Junji Tojo, H. A. Gustafsson, S. K. Tuli, Y. Watanabe, D. M. Lee, M. A. Volkov, Joakim Nystrand, R. Santo, Roy A. Lacey, A. Enokizono, R. E. Mischke, Jiangyong Jia, Y. Goto, S. H. Aronson, J. G. Lajoie, T. Hachiya, C. Zhang, A. Glenn, Jason Newby, Wei Xie, K. Okada, H. En'yo, P. Constantin, A. Deshpande, Senta Greene, J. Murata, M. Nara, I. J. Choi, V. Ladygin, M. Gonin, C. A. Ogilvie, T. K. Hemmick, K. El Chenawi, M. R. Shaw, S. F. Pate, W. Holzmann, C. L. Silva, E. P. Hartouni, A. G. Litvinenko, Yasuo Miake, Y. I. Makdisi, M. J. Leitch, E. O'Brien, J. G. Boissevain, H. Tsuruoka, K. Kurita, S. Afanasiev, M. Sivertz, L. Kochenda, X. R. Wang, Masayasu Ishihara, K. Katou, A. Kozlov, K. Imai, E. J. Desmond, C. L. Woody, Alexander Milov, A. Ster, Y. Kuroki, W. Y. Jang, R. Seto, M. Hibino, J. Park, A. Kiyomichi, C. Pinkenburg, Susumu Sato, M. Muniruzzaman, P. Chand, M. J. Tannenbaum, F. Staley, Jan Rak, W. Guryn, V. Papavassiliou, M. Stepanov, G. Roche, Martin Purschke, V. V. Ikonnikov, O. Drapier, R. Amirikas, Minghui Liu, R. Granier de Cassagnac, I. E. Yushmanov, D. Bucher, L. Sanfratello, S. Borenstein, M. Issah, K. Ozawa, D. P. Morrison, E. Vznuzdaev, A. Soldatov, T. Shiina, H. W. Van Hecke, V. E. Semenov, S. Sawada, J. D. Tepe, A. Franz, F. Messer, S. S. Kapoor, M. Heffner, D. Kotchetkov, Kenneth Francis Read, G. Gogiberidze, S. Bhagavatula, Z. Fraenkel, R. K. Choudhury, S. C. Johnson, J. S. Chai, Y. J. Mao, M. J. Kweon, P. L. McGaughey, J. M. Burward-Hoy, Atsushi Taketani, S. Y. Fung, T. C. Awes, Jun Kikuchi, John Hill, K. Oyama, Toru Sugitate, François Fleuret, S. N. White, W. E. Sondheim, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, Viktor Riabov, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, and A. Yanovich

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Multiplicity (mathematics), Nuclear matter, 01 natural sciences, Charged particle, Nuclear physics, Strange matter, Critical point (thermodynamics), Pseudorapidity, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

Longitudinal density correlations of produced matter in Au+Au collisions at sqrt(s{sub NN})=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted {alpha}{xi} parameter, related to the susceptibility of the density fluctuations in the long-wavelength limit, exhibits a nonmonotonic behavior as a function of the number of participant nucleons, N{sub part}. A local maximum is seen at N{sub part}{approx}90, with corresponding energy density based on the Bjorken picture of {epsilon}{sub Bj}{tau}{approx}2.4 GeV/(fm{sup 2}c) with a transverse area size of 60 fm2. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.

Published
2007

35. Elliptic Flow forϕMesons and (Anti)deuterons inAu+AuCollisions atsNN=200 GeV

Author

S. Takagi, K. Tanida, C. P. Singh, S. Bathe, K. N. Barish, H. Pei, Agneta Oskarsson, J. Chiba, V. I. Kochetkov, B. M. Johnson, Hiroaki Ohnishi, M. Rosati, Y. Berdnikov, Y. Akiba, G. C. Mishra, N. Kamihara, A. Isupov, C. Suire, Takao Sakaguchi, N. Grau, T. Ichihara, F. Matathias, M. Chiu, S. F. Pate, R. Armendariz, S. Nagamiya, Kazuhiro Tanaka, K. Shoji, C. Klein-Boesing, J. Murata, X. R. Wang, Kazuyoshi Kurita, T. A. Shibata, J. Sziklai, M. Wysocki, G. S. Kyle, Brian Cole, Klaus Johannes Reygers, Matthew G. Reuter, N. Willis, James Alexander, V. Papavassiliou, A. Drees, Sébastien Gadrat, Gerd Joachim Kunde, A. D. Frawley, T. Tabaru, V. Bumazhnov, M. P. Comets, J. M. Burward-Hoy, P. W. Stankus, P. Tarján, S. H. Aronson, Robert F. Hobbs, A. A. Vinogradov, Henrik Tydesjö, R. Averbeck, Byung-Sik Hong, I. D. Ojha, Alexander Malakhov, M. L. Brooks, I. Shein, D. E. Fields, D. Isenhower, B. V. Jacak, S. Esumi, Debashish Pal, S. Sawada, D. Silvermyr, A. Franz, A. Bazilevsky, W. Holzmann, Jiangyong Jia, Y. Goto, B. Espagnon, Philippe Rosnet, Steven E. Skutnik, M. T. Bjorndal, S. Kametani, Saskia Mioduszewski, L. S. Zolin, W. C. Smith, W. J. Park, Alexandre Lebedev, X. He, Maya Hachiya Shimomura, A. Kiss, D. M. Lee, Y. I. Makdisi, W. A. Zajc, O. O. Omiwade, Tadaaki Isobe, A. K. Purwar, J. S. Chai, J. Egdemir, J. H. Kang, J. S. Haggerty, A. Romana, P. D. Barnes, A. Yanovich, H. Qu, V. Baublis, I. Tserruya, V. Peresedov, Henner Buesching, Xingguo Li, Yu. Efremenko, S. Y. Fung, A. Denisov, V. Cianciolo, E. H. Kim, S. P. Stoll, J. T. Mitchell, P. L. McGaughey, S. S.E. Rosendahl, Hideki Hamagaki, K. Aoki, Taku Gunji, M. K. Lee, K. Ozawa, C. L. Woody, Y. Tanaka, Senta Greene, G. Bunce, J. Jin, Youngil Kwon, F. Kajihara, E. M. Takagui, G. David, M. J. Tannenbaum, Sergey Fokin, T. K. Shea, Shingo Sakai, Vladislav Manko, V-N. Tram, Roy A. Lacey, R. S. Towell, Akio Kiyomichi, B. E. Norman, John Hill, V. Singh, T. Horaguchi, H. Masui, A. K. Dubey, D. Jouan, M. N. Hagiwara, E. O'Brien, H. Delagrange, D. Mukhopadhyay, S. Kelly, Anne Marie Sickles, H. A. Torii, O. Dietzsch, N. Kurihara, Toru Sugitate, L. D. Isenhower, D. Bucher, R. A. Soltz, H. Borel, C. R. Cleven, H. Valle, P. J. Kroon, M. Grosse Perdekamp, N. N. Ajitanand, S. Butsyk, C. A. Ogilvie, Minghui Liu, Motoi Inaba, Charles Maguire, S. Leckey, Marie Germain, Mate Csanad, T. K. Hemmick, V. S. Pantuev, Yasuo Miake, M. G. Hur, C. Y. Chi, Kenneth Francis Read, H. A. Gustafsson, M. Harvey, A. Baldisseri, Vladimir Samsonov, J. G. Boissevain, I. Otterlund, C. Vale, Julia Velkovska, B. Komkov, Takahiro Nakamura, K. Das, Y. S. Kim, H. W. Vanhecke, Christine Angela Aidala, A. G. Litvinenko, M. Naglis, Josh Moss, Masashi Kaneta, A. V. Kazantsev, François Fleuret, B. Forestier, L. Kochenda, C. L. Silva, Junji Tojo, C. Zhang, I. V. Sourikova, Norio Saito, E. P. Hartouni, T. L. Thomas, Hirohiko Sato, M. A. L. Leite, T. Shohjoh, E. Kistenev, T. Kawagishi, S. N. White, A. Kozlov, S. K. Tuli, A. Durum, C. Pinkenburg, K. Okada, B. Sahlmueller, David D'Enterria, R. Seto, Tamas Ferenc Csorgo, Kensuke Homma, Ryugo S. Hayano, D. Winter, K. Haruna, D. Yu Peressounko, Viktor Riabov, J. L. Nagle, Yoichiro Fukao, Y. Riabov, D. S. Brown, G. R. Young, H. Harada, H. En'yo, T. C. Awes, P. Constantin, M. J. Leitch, Jen-Chieh Peng, Kenta Shigaki, T. E. Miller, S. Chernichenko, H. Lim, M. Nguyen, Masayasu Ishihara, V. Dzhordzhadze, M. Stepanov, G. Roche, S. Batsouli, B. Bassalleck, A. S. Nyanin, W. E. Sondheim, A. Enokizono, R. P. Pisani, Nikolay Tyurin, M. Konno, V. Babintsev, P. A. Rukoyatkin, Jan Rak, Dong Jo Kim, M. N. Wagner, Osamu Jinnouchi, M. C. McCain, R. Granier de Cassagnac, J. Gosset, J. P. Sullivan, A. P.T. Palounek, Susumu Sato, M. Holmes, Alexander Milov, O. Drapier, K. S. Sim, F. Staley, Y. Watanabe, E. R. Kinney, D. P. Morrison, S. Campbell, V. E. Semenov, H. Hiejima, J. Zimányi, Tatsuya Chujo, K. Imai, A. Deshpande, S. Yokkaichi, J. M. Heuser, I. Younus, A. Soldatov, B. Azmoun, M. J. Kweon, Y. Le Bornec, A. Dion, Atsushi Taketani, K. Hasuko, Martin Purschke, F. Gastineau, Hiroyuki Okada, Joakim Nystrand, Eva Haslum, D. Kotchetkov, S. Afanasiev, A. Ster, L. Aphecetche, Z. Fraenkel, M. Heffner, A. Taranenko, Johannes Peter Wessels, M. Issah, M. D. Malik, E. Vznuzdaev, S. Belikov, K. S. Joo, E. J. Desmond, A. Hadj Henni, M. Togawa, J. Park, Florian Bauer, K. Boyle, Wei Xie, Y. Tsuchimoto, D. Sharma, I. E. Yushmanov, Alexei Khanzadeev, E. Stenlund, T. V. Moukhanova, R. Vértesi, Jason Newby, M. Gonin, H. Pereira, J. L. Drachenberg, S. P. Sorensen, J. G. Lajoie, T. Hachiya, I. J. Choi, J. E. Frantz, A. Glenn, V. L. Rykov, T. Dahms, I. Ravinovich, Y. Nagata, S. S. Ryu, R. Bennett, Ahmed Al-Jamel, O. Zaudtke, and Y. Cobigo

Subjects
Physics, Quark, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, High Energy Physics::Phenomenology, Elliptic flow, Hadron, General Physics and Astronomy, Constituent quark, 01 natural sciences, Nuclear physics, Baryon, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Scaling, Bar (unit)
Abstract

Differential elliptic flow (v(2)) for phi mesons and (anti)deuterons ((d) over bar )d is measured for Au + Au collisions at root s(NN) = 200 GeV. The v(2) for phi mesons follows the trend of lighter pi(+/-) and K-+/- mesons, suggesting that ordinary hadrons interacting with standard hadronic cross sections are not the primary driver for elliptic flow development. The v(2) values for ((d) over bar )d suggest that elliptic flow is additive for composite particles. This further validation of the universal scaling of v(2) per constituent quark for baryons and mesons suggests that partonic collectivity dominates the transverse expansion dynamics.

Published
2007

36. Publisher’s Note:J/ψProduction versus Centrality, Transverse Momentum, and Rapidity inAu+AuCollisions atsNN=200 GeV[Phys. Rev. Lett.98, 232301 (2007)]

Author

J. Gosset, J. P. Sullivan, S. Yokkaichi, J. M. Heuser, H. Van Hecke, J. G. Boissevain, Masashi Kaneta, C. Pinkenburg, M. Stepanov, G. S. Kyle, G. Roche, N. Willis, James Alexander, K. Dehmelt, T. L. Thomas, Tae-Yeon Lee, Martin Purschke, C. A. Aidala, F. Gastineau, K. Tanida, J. H. Kang, J. S. Haggerty, A. Romana, J. L. Drachenberg, Y. S. Lai, R. A. Soltz, Jen-Chieh Peng, R. Averbeck, Byung-Sik Hong, M. Chiu, P. Rukovatkin, T. A. Shibata, D. E. Fields, A. Bazilevsky, Y. Fukao, A. Shevel, A. Ster, V. I. Kochetkov, J. Egdemir, Jason Kamin, D. Kotchetkov, B. V. Jacak, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, M. McCumber, A. K. Purwar, J. Newby, W. A. Zajc, O. Zaudtke, M. Grosse Perdekamp, Ryugo S. Hayano, Y. Nakamiya, D. Lynch, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, Alexandre Lebedev, Andry Malala Rakotozafindrabe, D. M. Lee, J. Chiba, D. Isenhower, J.-G. Park, O. Dietzsch, A. Morreale, A. Toia, A. Kiss, Z. Yasin, Henner Buesching, Z. Fraenkel, T. Hester, S. Kametani, C. P. Singh, M. Virius, Gerd Joachim Kunde, I. Shein, Dong Jo Kim, Osamu Jinnouchi, G. Baksay, K. Shoji, M. T. Bjorndal, X. He, Y. Riabov, Kenta Shigaki, O. O. Omiwade, M. Nguyen, L. Mašek, H. Valle, A. Churyn, Minghui Liu, B. M. Johnson, A. Isupov, V. Baublis, A. Denisov, V. Cianciolo, A. S. Nyanin, Youngil Kwon, D. Jouan, G. C. Mishra, V. Peresedov, Marcus Hohlmann, Robert Vertesi, S. Belikov, K. S. Joo, Margaret Harvey, V-N. Tram, N. Grau, D. Mukhopadhyay, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, P. W. Stankus, Y. Cobigo, J. Rak, M. Heffner, S. Bathe, B. Komkov, J. Murata, J. L. Charvet, R. Lacey, Kenneth Francis Read, R. Granier de Cassagnac, J. Sziklai, A. Adare, I. Ravinovich, Julia Velkovska, M. Rosati, N. Kamihara, Takao Sakaguchi, C. Klein-Boesing, Norio Saito, D. Winter, E. J. Desmond, P. Rosnet, M. A. L. Leite, K. O. Eyser, K. Fujiwara, Sergey Fokin, C. L. Woody, Kensuke Homma, O. Drapier, Frank Ellinghaus, F. Matathias, R. Armendariz, D. Yu Peressounko, M. Togawa, A. D. Frawley, T. Tabaru, Y. L. Yamaguchi, Brian Cole, Motoi Inaba, R. S. Towell, Alberto Baldisseri, Mate Csanad, E. R. Kinney, Y. Nagata, S. Chernichenko, D. P. Morrison, H. Lim, T. E. Miller, E. T. Atomssa, Rushan Han, M. N. Hagiwara, S. H. Aronson, P. Tarján, Florian Bauer, Sean A. Kelly, S. Esumi, Tadaaki Isobe, D. Sharma, S. Campbell, S. S. Ryu, B. Bassalleck, A. Enokizono, A. Taranenko, Vladimir Samsonov, A. Drees, V. Babintsev, Y. Tsuchimoto, J. S. Chai, I. Garishvili, Akio Kiyomichi, B. Azmoun, Y. J. Mao, N. N. Ajitanand, V. E. Semenov, J. Zimányi, Bruno Espagnon, I. Otterlund, M. Konno, Kazushi Miki, W. Holzmann, Maya Hachiya Shimomura, P. Chung, J. Kubart, A. Král, M. J. Kweon, A. A. Vinogradov, Henrik Tydesjö, Y. Le Bornec, K. Das, T. Horaguchi, Tatsuya Chujo, C. R. Cleven, R. Bennett, J. T. Mitchell, I. Tserruya, Y. I. Makdisi, M. Naglis, C. Haegemann, Y. Inoue, I. E. Yushmanov, M. Holmes, M. Slunečka, N. Kurihara, Takahiro Nakamura, David D'Enterria, H. Masui, A. K. Dubey, E. P. Hartouni, Yu. Efremenko, V. Singh, R. Seidl, Vladislav Manko, Alexei Khanzadeev, Jiangyong Jia, Y. Goto, W. S. Emam, C. L. Silva, H. A. Gustafsson, D. H. Kim, Ahmed Al-Jamel, M. Finger, Tamas Ferenc Csorgo, I. V. Sourikova, J. M. Burward-Hoy, E. Stenlund, H. Sakata, Susumu Oda, C. A. Ogilvie, A. Dion, H. Kanou, Agneta Oskarsson, K. Hasuko, R. P. Pisani, A. A. Bickley, P. J. Kroon, J. E. Frantz, J. L. Nagle, C. Vale, M. J. Tannenbaum, Senta Greene, T. K. Hemmick, Taku Gunji, H. Gong, J. Seele, Atsushi Taketani, Y. Berdnikov, Y. Akiba, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, T. Shohjoh, C. Zhang, A. Durum, Nikolay Tyurin, Masayasu Ishihara, Hiroyuki Okada, Herve Borel, A. V. Kazantsev, Yasuo Miake, B. S. Chang, J. Klay, X. H. Li, F. Kajihara, M. G. Hur, C. Y. Chi, Vaclav Vrba, Klaus Johannes Reygers, Joakim Nystrand, M. N. Wagner, Catherine Micaela Silvestre, D. S. Brown, Susumu Sato, K. S. Sim, Eva Haslum, S. Takagi, B. E. Norman, E. O'Brien, H. Delagrange, A. Glenn, Hirohiko Sato, F. Staley, M. Ouchida, S. Rembeczki, L. Tomášek, L. Kochenda, M. Issah, P. Mikeš, S. K. Tuli, D. Bucher, Y. Watanabe, T. V. Moukhanova, S. Butsyk, Eunja Kim, Steven E. Skutnik, Makoto Oka, V. L. Rykov, T. Dahms, J. Asai, T. Kawagishi, Viktor Riabov, Saskia Mioduszewski, S. Zhou, K. N. Barish, S. Batsouli, T. C. Awes, Kyoichiro Ozawa, T. Liška, Y. S. Kim, H. Hiejima, H. Qu, I. Younus, Jun Kikuchi, Shingo Sakai, Hideki Hamagaki, K. Aoki, K. Imai, G. David, A. Soldatov, D. Pal, J. Jin, E. M. Takagui, Anne Marie Sickles, A. P.T. Palounek, G. R. Young, W. C. Smith, M. K. Lee, V. S. Pantuev, Junji Tojo, K. Okada, B. Sahlmueller, H. En'yo, P. Constantin, M. J. Leitch, M. L. Brooks, S. F. Pate, B. Love, Marie Germain, H. Al-Bataineh, X. R. Wang, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, V. Papavassiliou, Sébastien Gadrat, J. Franz, V. Dzhordzhadze, M. Mitrovski, M. Wysocki, Robert F. Hobbs, S. Sawada, J. Ying, A. Franz, S. N. White, A. Hadj Henni, Wei Xie, K. Nakano, W. E. Sondheim, A. Deshpande, H. Pei, K. Boyle, M. B. Deaton, D. Hornback, S. Y. Fung, Y. Tanaka, T. K. Shea, L. Baksay, Charles Maguire, S. Leckey, Josh Moss, John Hill, Bruno Lenzi, E. Kistenev, I. J. Choi, H. Harada, H. A. Torii, Toru Sugitate, L. D. Isenhower, P. L. McGaughey, François Fleuret, B. Forestier, T. Ichihara, Matthew G. Reuter, Takahiro Fusayasu, S. V. Afanasiev, D. Kawall, L. Aphecetche, M. C. McCain, I. D. Ojha, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, Johannes Peter Wessels, M. D. Malik, E. Vznuzdaev, S. P. Sorensen, Dylan Walker, J. G. Lajoie, T. Hachiya, A. Kravitz, Hiroaki Ohnishi, Xingguo Li, M. Gonin, K. Kurita, H. Pereira, and R. Pak

Subjects
Nuclear physics, Physics, Quantum electrodynamics, Transverse momentum, General Physics and Astronomy, Rapidity, Centrality
Published
2007

37. System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes inCu+CuandAu+AuCollisions atsNN=200and 62.4 GeV

Author

A. Shevel, H. Pei, Robert F. Hobbs, S. Belikov, K. S. Joo, I. V. Sourikova, H. Torii, Debashish Pal, P. Tarján, Sean A. Kelly, M. A. Volkov, S. Takagi, H. J. Kim, S. Sawada, J. Ying, A. Franz, M. Ouchida, L. Tomášek, J. Asai, K. O. Eyser, V. S. Pantuev, Viktor Veszpremi, I. Ravinovich, A. G. Hansen, Shingo Sakai, B. Espagnon, S. Y. Fung, M. Harvey, K. Fujiwara, K. N. Barish, R. S. Towell, I. Tserruya, T. L. Thomas, C. A. Ogilvie, Y. Nagata, Ryugo S. Hayano, Y. Riabov, T. K. Hemmick, D. Sharma, Kenta Shigaki, M. Nguyen, A. S. Nyanin, Yu. Efremenko, Maya Hachiya Shimomura, V. Singh, Yasuo Miake, I. Garishvili, Akio Kiyomichi, Junji Tojo, S. F. Pate, Tae-Yeon Lee, Martin Purschke, F. Gastineau, N. N. Ajitanand, Hiroaki Ohnishi, B. D. Fox, Mate Csanad, J. L. Charvet, S. S. Ryu, Y. I. Makdisi, Anne Marie Sickles, G. B. Kim, T. J. Uam, Senta Greene, K. Okada, H. Al-Bataineh, X. R. Wang, J. G. Boissevain, S. Esumi, M. B. Deaton, N. Kurihara, E. J. Desmond, L. Kochenda, Jean-Pierre Cussonneau, Masashi Kaneta, John Hill, K. Oyama, Steven E. Skutnik, D. Kotchetkov, M. L. Brooks, F. Matathias, M. Togawa, B. Sahlmueller, H. En'yo, J. M. Qualls, P. Constantin, M. J. Leitch, B. E. Norman, Takahiro Nakamura, E. H. Kim, K. Katou, Toru Sugitate, A. Morreale, M. J. Tannenbaum, B. Love, Kensuke Homma, T. Kawagishi, Marie Germain, E. O'Brien, Z. Fraenkel, M. Naglis, V. V. Ikonnikov, G. R. Young, V. Papavassiliou, C. L. Silva, T. E. Miller, D. Mukhopadhyay, Sébastien Gadrat, S. Rembeczki, David D'Enterria, R. K. Choudhury, A. G. Litvinenko, C. Silvestre, Hirohiko Sato, D. Bucher, J. Park, Florian Bauer, R. A. Soltz, Susumu Oda, O. Dietzsch, H. Valle, M. G. Hur, C. Y. Chi, Y. Tanaka, T. K. Shea, E. T. Atomssa, C. Pinkenburg, D. Y.-U. Peressounko, R. Pak, S. K. Tuli, T. Shohjoh, R. Santo, A. Durum, S. C. Johnson, S. Chernichenko, Masayasu Ishihara, B. Azmoun, A. Král, Dipanwita Dutta, M. J. Kweon, H. Lim, B. Bassalleck, Ferenc Deák, M. Grosse Perdekamp, N. Kamihara, Jan Rak, J. M. Burward-Hoy, M. Stepanov, G. Roche, R. Armendariz, A. Kozlov, R. Seto, K. Haruna, C. H. Kuberg, J. Chiba, G. C. Mishra, W. A. Zajc, Takao Sakaguchi, V. Baublis, A. Denisov, V. Cianciolo, Xiao-yan Li, R. Bennett, Xingguo Li, Ahmed Al-Jamel, M. Finger, Susumu Sato, C. Klein-Boesing, H. Qu, J. E. Frantz, M. Gonin, P. Chung, R. P. Pisani, Y. Tsuchimoto, L. Baksay, K. Das, M. Mitrovski, R. Granier de Cassagnac, A. Adare, V.N. Penev, M. Muniruzzaman, A. D. Frawley, F. Staley, T. Tabaru, Sergey Fokin, Y. L. Yamaguchi, B. Komkov, Herve Borel, D. Lynch, Y. Le Bornec, A. Deshpande, D. S. Brown, Julia Velkovska, M. Rosati, M. Konno, M. Oka, A. Pierson, Kazuyoshi Kurita, A. Drees, V. Dzhordzhadze, X. He, O. O. Omiwade, M. Velkovsky, E. P. Hartouni, J. Kubart, J. Gosset, J. P. Sullivan, W. C. Smith, L. Sanfratello, I. E. Yushmanov, Nikolay Tyurin, Alexander Milov, S. H. Aronson, I. Nakagawa, M. Wysocki, Norio Saito, M. A. L. Leite, H. Pereira, M. Inuzuka, Hideki Hamagaki, K. Aoki, A. Glenn, M. Holmes, W. S. Emam, G. David, C. P. Singh, T. Horaguchi, A. Hoover, M. K. Lee, K. Ozawa, J. T. Mitchell, B. M. Johnson, A. Dion, V. Peresedov, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, David Olle Rickard Silvermyr, Charles Maguire, S. Leckey, R. Kohara, W. Holzmann, O. Drapier, Frank Ellinghaus, M. N. Wagner, Atsushi Taketani, R. Seidl, A. Enokizono, D. E. Fields, Vladislav Manko, A. Kiss, V. Babintsev, J. Egdemir, A. A. Vinogradov, Henrik Tydesjö, D. Winter, Josh Moss, R. Vértesi, Jason Kamin, K. S. Sim, S. S. Adler, E. R. Kinney, D. P. Morrison, B. V. Jacak, V. L. Rykov, T. Dahms, J. L. Drachenberg, S. Campbell, G. S. Kyle, M. Chiu, Ajit Kumar Mohanty, N. Willis, A. Isupov, C. Suire, M. Slunečka, Z. Yasin, Henner Buesching, James Alexander, Y. Watanabe, R. Averbeck, S. P. Sorensen, Jiangyong Jia, Y. Goto, S. P. Stoll, S. Batsouli, T. A. Shibata, Y. Kwon, Byung-Sik Hong, A. Bazilevsky, I. Younus, H. Masui, A. K. Dubey, C. L. Woody, W. C. Chang, T. Hester, J. Sziklai, V. E. Semenov, H. Hiejima, J. Zimányi, Dylan Walker, Philippe Rosnet, Alexandre Lebedev, M. McCumber, A. K. Purwar, E. Kistenev, Tatsuya Chujo, C. R. Cleven, C. Haegemann, Y. Inoue, D. M. Lee, Xiaopeng Zong, K. Dehmelt, A. A. Bickley, A. Soldatov, D. Kawall, S. S.E. Rosendahl, G. Bunce, K. Tanida, Roy A. Lacey, Brian Cole, S. Yokkaichi, Rushan Han, M. N. Hagiwara, Jen-Chieh Peng, J. G. Lajoie, J. M. Heuser, T. Hachiya, K. Imai, V. I. Kochetkov, O. Zaudtke, X. Camard, P. Chand, Marcus Hohlmann, S. Butsyk, A. Churyn, P. J. Kroon, Dong-Hun Kim, I. J. Choi, A. Kravitz, M. Virius, J. Murata, Vladimir Samsonov, C. Vale, D. Jouan, Y. J. Mao, I. Otterlund, S. Kametani, Gerd Joachim Kunde, B. S. Chang, L. Aphecetche, H. Harada, Takeo Kawabata, I. Shein, H. W. Vanhecke, Christine Angela Aidala, Ch. Finck, Jason Newby, J. Klay, Pàl Hidas, Saskia Mioduszewski, V-N. Tram, D. Isenhower, J. H. Kang, A. Toia, Dong Jo Kim, L. Mašek, Osamu Jinnouchi, H. Kobayashi, J. S. Haggerty, Y. Nakamiya, M. C. McCain, N. Grau, Alberto Baldisseri, A. Romana, K. Shoji, S. Bathe, Agneta Oskarsson, Tamas Ferenc Csorgo, P. W. Stankus, Motoi Inaba, German Martinez, Johannes Peter Wessels, Y. Berdnikov, J. L. Nagle, Y. Akiba, G. Baksay, A. P.T. Palounek, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, Vaclav Vrba, Klaus Johannes Reygers, Y. Cobigo, Alexei Khanzadeev, Yves Roland Schutz, M. T. Bjorndal, Y. S. Lai, M. Issah, H. Kanou, A. Devismes, Taku Gunji, H. Gong, J. Seele, M. D. Malik, N. Bruner, E. Stenlund, E. Vznuzdaev, F. Kajihara, J. Jin, E. M. Takagui, H. Sakata, H. A. Gustafsson, H. Delagrange, A. Hadj Henni, C. Zhang, K. Boyle, Wei Xie, S. Zhou, Y. S. Kim, Viktor Riabov, T. V. Moukhanova, S. Afanasiev, A. Ster, D. Hornback, M. Heffner, A. Taranenko, Kazushi Miki, B. Khachaturov, T. Matsumoto, K. Hasuko, Hiroyuki Okada, Joakim Nystrand, Eva Haslum, B. Lenzi, Minghui Liu, Kenneth Francis Read, A. V. Kazantsev, P. Mikeš, Yoichiro Fukao, T. C. Awes, T. Liška, Jun Kikuchi, Tadaaki Isobe, J. S. Chai, P. L. McGaughey, L. D. Isenhower, François Fleuret, B. Forestier, T. Ichihara, F. K. Wohn, Matthew G. Reuter, Takahiro Fusayasu, I. D. Ojha, Alexander Malakhov, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, S. N. White, K. Nakano, W. E. Sondheim, and P. A. Rukoyatkin

Subjects
Shock wave, Physics, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Jet (particle physics), Radiation, 01 natural sciences, Gluon, Azimuth, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Cherenkov radiation, Beam (structure)
Abstract

We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at root s(NN)=62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from Delta phi=pi in central and semicentral collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models.

Published
2007

38. Production of ω mesons at large transverse momenta inp+pandd+Au collisions atsNN=200GeV

Author

T. E. Miller, M. Rosati, R. Santo, B. Khachaturov, M. Velkovsky, Jan Rak, P. Tarján, Sean A. Kelly, D. Mukhopadhyay, Y. Cobigo, M. Inuzuka, Hideki Hamagaki, K. Aoki, G. David, S. N. White, J. E. Frantz, T. Matsumoto, I. Ravinovich, S. S. Ryu, B. D. Fox, Viktor Veszpremi, Ahmed Al-Jamel, A. Glenn, V. L. Rykov, R. Granier de Cassagnac, Bruno Espagnon, Kensuke Homma, K. Hasuko, V-N. Tram, S. C. Johnson, M. J. Kweon, A. A. Vinogradov, Henrik Tydesjö, C. H. Kuberg, S. Chernichenko, Jiangyong Jia, W. E. Sondheim, Saskia Mioduszewski, H. Lim, B. Bassalleck, V. Bumazhnov, S. S. Adler, Motoi Inaba, J. M. Burward-Hoy, D. E. Fields, B. V. Jacak, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, Hiroyuki Okada, Y. Watanabe, M. Konno, J. Chiba, Mate Csanad, Y. J. Kwon, D. Isenhower, G. S. Kyle, Joakim Nystrand, Senta Greene, Y. Goto, T. Ichihara, F. K. Wohn, Matthew G. Reuter, C. L. Woody, K. Das, E. P. Hartouni, L. Sanfratello, J. G. Boissevain, Masashi Kaneta, I. D. Ojha, S. F. Pate, W. C. Chang, James Alexander, G. C. Mishra, J. T. Mitchell, Yves Roland Schutz, A. K. Purwar, Atsushi Taketani, Alexander Malakhov, German Martinez, David D'Enterria, A. Devismes, E. O'Brien, Alexander Milov, Marie Germain, K. Katou, Takao Sakaguchi, P. J. Kroon, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, S. Afanasiev, A. Ster, M. Gross Perdekamp, Roy A. Lacey, S. Belikov, K. S. Joo, F. Kajihara, D. Pal, H. Delagrange, A. Soldatov, R. A. Soltz, H. Borel, K. Tanida, J. L. Drachenberg, C. Klein-Boesing, S. Butsyk, L. S. Zolin, Vladislav Manko, Vladimir Samsonov, X. R. Wang, C. Pinkenburg, Alexandre Lebedev, G. Roche, R. P. Pisani, S. Esumi, W. J. Park, E. M. Takagui, Nikolay Tyurin, V. I. Kochetkov, A. G. Litvinenko, M. Issah, Anne Marie Sickles, H. Kobayashi, S. Bathe, D. M. Lee, O. Drapier, P. D. Barnes, A. Yanovich, M. Stepanov, S. Zhou, A. Baldisseri, Xiaopeng Zong, A. Pierson, A. D. Frawley, T. Chujo, V. Papavassiliou, Tamas Ferenc Csorgo, Y. J. Mao, V. S. Pantuev, S. Kametani, B. M. Johnson, E. Vznuzdaev, S. Y. Fung, N. Grau, S. P. Sorensen, A. Kozlov, R. Seto, Pàl Hidas, J. L. Nagle, X. Camard, E. R. Kinney, M. Heffner, M. Harvey, N. N. Ajitanand, Gerd Joachim Kunde, J. H. Kang, David Olle Rickard Silvermyr, S. H. Aronson, A. Isupov, E. H. Kim, J. S. Haggerty, D. P. Morrison, A. Taranenko, Robert F. Hobbs, Martin Purschke, A. Romana, Ferenc Deák, N. Kamihara, Junji Tojo, John Hill, K. Oyama, O. Dietzsch, I. Shein, W. A. Zajc, M. P. Comets, H. W. Vanhecke, G. R. Young, Christine Angela Aidala, L. Aphecetche, S. Gadrat, Takeo Kawabata, M. C. McCain, V. Dzhordzhadze, S. Takagi, W. Holzmann, Brian Cole, Toru Sugitate, L. D. Isenhower, R. S. Towell, D. Kotchetkov, P. W. Stankus, K. Okada, Takahiro Nakamura, Dipanwita Dutta, Y. Tanaka, V. Baublis, A. Denisov, K. N. Barish, V. Cianciolo, Maya Hachiya Shimomura, F. Matathias, R. Armendariz, Akio Kiyomichi, V. E. Semenov, Anders Nils Erik Oskarsson, S. Sawada, Z. Fraenkel, H. En'yo, P. Constantin, M. J. Leitch, Y. Akiba, Y. I. Makdisi, T. K. Shea, R. K. Choudhury, J. Zimányi, A. Franz, François Fleuret, I. V. Sourikova, Sergey Fokin, M. T. Bjorndal, J. Gosset, Wei Xie, A. Durum, J. P. Sullivan, A. Deshpande, T. J. Uam, H. Torii, B. Komkov, A. Drees, K. S. Sim, C. Y. Chi, Hans-Åke Gustafsson, C. L. Silva, T. Horaguchi, A. Hoover, M. J. Tannenbaum, S. Nagamiya, Kazuhiro Tanaka, D. S. Brown, Norio Saito, M. L. Brooks, M. A. L. Leite, H. Hiejima, X. He, J. G. Lajoie, V. V. Ikonnikov, Jen-Chieh Peng, R. Kohara, Masayasu Ishihara, S. Yokkaichi, J. M. Heuser, Susumu Sato, T. Hachiya, V. Peresedov, Y. Le Bornec, Klaus Johannes Reygers, D. Bucher, V. Babintsev, K. Imai, M. Muniruzzaman, C. Zhang, H. Masui, Ingvar Otterlund, S. P. Stoll, Evert Anders Stenlund, F. Staley, Viktor Riabov, I. J. Choi, S. S.E. Rosendahl, G. Bunce, A. G. Hansen, Shingo Sakai, A. Kiss, S. Batsouli, H. Pei, Henner Buesching, T. L. Thomas, D. Jouan, M. Gonin, M. A. Volkov, Ryugo S. Hayano, P. Chand, Y. Riabov, V.N. Penev, A. P.T. Palounek, Kenta Shigaki, Dong Jo Kim, C. A. Ogilvie, T. K. Hemmick, A. S. Nyanin, Yasuo Miake, P. Rosnet, Osamu Jinnouchi, L. Kochenda, K. Kurita, H. J. Kim, H. Pereira, I. Tserruya, Yu. Efremenko, G. B. Kim, Hirohiko Sato, J. Velkovska, Charles Maguire, S. Leckey, Hiroaki Ohnishi, Josh Moss, J. M. Qualls, E. Kistenev, N. Willis, Xingguo Li, Alexei Khanzadeev, N. Bruner, Minghui Liu, Kenneth Francis Read, P. L. McGaughey, Ch. Finck, Jason Newby, A. V. Kazantsev, E. J. Desmond, Jean-Pierre Cussonneau, Yoichiro Fukao, M. Togawa, J. Park, Florian Bauer, T. C. Awes, Kyoichiro Ozawa, Jun Kikuchi, Y. Tsuchimoto, and I. E. Yushmanov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Energy loss, Meson, 010308 nuclear & particles physics, Modification factor, Omega baryon, 01 natural sciences, Omega, Nuclear physics, Transverse plane, Minimum bias, 0103 physical sciences, Transverse momentum, 010306 general physics
Abstract

The PHENIX experiment at RHIC has measured the invariant cross section for omega-meson production at mid-rapidity in the transverse momentum range 2.5 pi^0 pi^+ pi^- and omega --> pi^0 gamma) yield consistent results, and the reconstructed omega mass agrees with the accepted value within the p_T range of the measurements. The omega/pi^0 ratio is found to be 0.85 +/- 0.05(stat) +/- 0.09(sys) and 0.94 +/- 0.08(stat) +/- 0.12(sys) in p+p and d+Au collisions respectively, independent of p_T . The nuclear modification factor R_dA is 1.03 +/- 0.12(stat) +/- 0.21(sys) and 0.83 +/- 0.21(stat) +/- 0.17(sys) in minimum bias and central (0-20%) d+Au collisions, respectively.

Published
2007

39. Energy Loss and Flow of Heavy Quarks inAu+AuCollisions atsNN=200 GeV

Author

J. G. Boissevain, Masashi Kaneta, M. Mitrovski, S. Esumi, B. Azmoun, A. Král, M. J. Kweon, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, M. Oka, A. Dion, Atsushi Taketani, A. Enokizono, M. Rosati, R. A. Soltz, J. L. Drachenberg, S. P. Sorensen, Dylan Walker, R. Vértesi, Jason Newby, O. Drapier, Frank Ellinghaus, E. R. Kinney, M. Grosse Perdekamp, J. E. Frantz, B. Love, D. P. Morrison, S. Campbell, Bruno Espagnon, A. A. Vinogradov, Henrik Tydesjö, J. G. Lajoie, Herve Borel, D. Lynch, V. E. Semenov, J. Zimányi, C. Pinkenburg, Steven E. Skutnik, Tae-Yeon Lee, Martin Purschke, Marie Germain, F. Gastineau, D. Kotchetkov, A. Morreale, Z. Fraenkel, S. Belikov, K. S. Joo, Tatsuya Chujo, Y. Goto, D. Sharma, T. Hachiya, A. Glenn, Mate Csanad, K. Hasuko, L. Tomášek, V. S. Pantuev, A. Deshpande, A. G. Litvinenko, I. J. Choi, A. Kravitz, V. L. Rykov, T. Dahms, H. Qu, M. Stepanov, G. Roche, Hiroyuki Okada, A. Kozlov, Hideki Hamagaki, K. Aoki, G. David, R. Seto, M. Wysocki, E. H. Kim, Joakim Nystrand, W. A. Zajc, I. Ravinovich, V. Baublis, S. Kelly, K. Haruna, N. N. Ajitanand, M. Issah, M. Harvey, D. Winter, M. P. Comets, D. Yu Peressounko, Eva Haslum, B. Lenzi, Y. Nagata, S. Bathe, Agneta Oskarsson, H. Pei, V. Dzhordzhadze, S. Takagi, A. V. Kazantsev, Takahiro Nakamura, S. S. Ryu, Y. Berdnikov, Y. Akiba, J. Gosset, K. N. Barish, S. F. Pate, A. Denisov, V. Cianciolo, David D'Enterria, M. D. Malik, E. Vznuzdaev, Junji Tojo, P. Tarján, M. Chiu, T. A. Shibata, Susumu Oda, M. Mishra, S. Nagamiya, Kazuhiro Tanaka, Xiao-yan Li, J. P. Sullivan, R. P. Pisani, T. Shohjoh, Sergey Fokin, Vaclav Vrba, Klaus Johannes Reygers, A. Durum, H. Al-Bataineh, X. R. Wang, Nikolay Tyurin, M. N. Wagner, J. T. Mitchell, P. Mikeš, K. Nakano, T. Horaguchi, I. Younus, D. Isenhower, A. Toia, L. Mašek, W. E. Sondheim, Charles Maguire, S. Leckey, D. S. Brown, R. Bennett, Ahmed Al-Jamel, M. Finger, Jan Rak, K. Okada, Yoichiro Fukao, A. Soldatov, R. Seidl, Vladislav Manko, M. Slunečka, R. Pak, N. Kamihara, S. Yokkaichi, M. L. Brooks, Josh Moss, J. Chiba, B. Sahlmueller, V. Papavassiliou, Sébastien Gadrat, R. Granier de Cassagnac, T. Hester, T. C. Awes, A. Adare, J. M. Heuser, P. A. Rukoyatkin, H. En'yo, R. Armendariz, D. E. Fields, E. Kistenev, P. Constantin, M. J. Leitch, T. Liška, Jun Kikuchi, C. P. Singh, C. R. Cleven, Kazuyoshi Kurita, Y. L. Yamaguchi, B. Komkov, Senta Greene, B. V. Jacak, G. C. Mishra, C. Haegemann, Y. Inoue, A. Drees, I. Tserruya, M. McCumber, A. K. Purwar, Norio Saito, B. E. Norman, E. O'Brien, Takao Sakaguchi, C. Klein-Boesing, M. A. L. Leite, B. M. Johnson, Yu. Efremenko, A. Hadj Henni, P. J. Kroon, Dong-Hun Kim, M. Gonin, A. D. Frawley, K. Boyle, V-N. Tram, T. Tabaru, C. Vale, B. S. Chang, V. Singh, Christine Angela Aidala, J. Klay, H. Harada, J. L. Charvet, V. Babintsev, G. S. Kyle, M. B. Deaton, A. Isupov, J. Kubart, J. M. Burward-Hoy, Wei Xie, J. Sziklai, H. Pereira, W. C. Smith, T. E. Miller, James Alexander, O. Zaudtke, Y. Tanaka, E. T. Atomssa, T. K. Shea, J. Jia, S. H. Aronson, R. Averbeck, Byung-Sik Hong, M. K. Lee, K. Ozawa, Motoi Inaba, Brian Cole, A. Bazilevsky, Hirohiko Sato, S. K. Tuli, Youngil Kwon, W. Holzmann, P. Chung, Philippe Rosnet, Y. J. Mao, S. Kametani, Maya Hachiya Shimomura, M. Virius, M. Holmes, K. Dehmelt, Alexandre Lebedev, L. Baksay, Jen-Chieh Peng, Y. I. Makdisi, D. M. Lee, J. S. Haggerty, A. Romana, S. Y. Fung, W. S. Emam, M. Ouchida, J. Asai, S. Afanasiev, A. Ster, H. Kanou, K. Das, Taku Gunji, H. Gong, J. Seele, Y. Cobigo, E. P. Hartouni, Shingo Sakai, Hiroaki Ohnishi, F. Kajihara, M. Naglis, Anne Marie Sickles, Y. S. Lai, C. L. Silva, Dong Jo Kim, H. Delagrange, K. O. Eyser, K. Fujiwara, D. Hornback, H. A. Torii, Osamu Jinnouchi, M. Heffner, R. S. Towell, Toru Sugitate, Masayasu Ishihara, L. D. Isenhower, I. Garishvili, Akio Kiyomichi, M. J. Tannenbaum, Susumu Sato, N. Grau, S. Zhou, A. Taranenko, F. Staley, N. Kurihara, K. Shoji, Kazushi Miki, Minghui Liu, Y. S. Kim, François Fleuret, M. G. Hur, C. Y. Chi, B. Forestier, Kenneth Francis Read, G. R. Young, P. W. Stankus, T. Ichihara, N. Willis, D. Mukhopadhyay, H. A. Gustafsson, L. Aphecetche, S. Rembeczki, J. Egdemir, F. Matathias, H. W. Van Hecke, D. Bucher, Matthew G. Reuter, Saskia Mioduszewski, D. Kawall, Kensuke Homma, Takahiro Fusayasu, K. Tanida, C. Zhang, V. I. Kochetkov, C. Silvestre, I. D. Ojha, Alexander Malakhov, Jason Kamin, J. Murata, J. Jin, E. M. Takagui, S. Chernichenko, S. P. Stoll, Marisilvia Donadelli, V. Bumazhnov, Johannes Peter Wessels, Gerd Joachim Kunde, D. Silvermyr, H. Lim, I. Shein, Andry Malala Rakotozafindrabe, A. Kiss, Viktor Riabov, B. Bassalleck, L. S. Zolin, W. J. Park, S. S.E. Rosendahl, Alberto Baldisseri, Z. Yasin, Henner Buesching, G. Bunce, M. Konno, C. L. Woody, S. Batsouli, P. D. Barnes, A. Yanovich, Xingguo Li, H. Kano, Tadaaki Isobe, J. S. Chai, A. Churyn, O. Dietzsch, H. Valle, Y. Nakamiya, Marcus Hohlmann, D. Jouan, A. Shevel, Roy A. Lacey, K. S. Sim, Julia Velkovska, Rushan Han, M. N. Hagiwara, P. L. McGaughey, Y. Watanabe, S. N. White, M. C. McCain, S. Butsyk, Vladimir Samsonov, C. A. Ogilvie, J. C. Hill, I. Otterlund, X. He, J. Kang, T. K. Hemmick, Yasuo Miake, G. Baksay, L. Kochenda, O. O. Omiwade, H. Hiejima, A. P.T. Palounek, Tamas Ferenc Csorgo, I. V. Sourikova, J. L. Nagle, M. T. Bjorndal, K. Imai, V. Peresedov, Y. Le Bornec, T. L. Thomas, Ryugo S. Hayano, Robert F. Hobbs, Debashish Pal, Y. Riabov, S. Sawada, J. Ying, A. Franz, Kenta Shigaki, M. Nguyen, A. S. Nyanin, E. J. Desmond, H. Masui, A. K. Dubey, M. Togawa, J. Park, Florian Bauer, Y. Tsuchimoto, I. E. Yushmanov, Alexei Khanzadeev, A. A. Bickley, E. Stenlund, H. Sakata, T. V. Moukhanova, and T. Kawagishi

Subjects
Quark, Physics, 010308 nuclear & particles physics, Elliptic flow, General Physics and Astronomy, Electron, 01 natural sciences, 7. Clean energy, Nuclear physics, Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Anisotropy
Abstract

The PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) has measured electrons with 0.3 < p(T) < 9 GeV/c at midrapidity (y < 0.35) from heavy-flavor (charm and bottom) decays in Au + Au collisions at root s(NN) = 200 GeV. The nuclear modification factor R-AA relative to p + p collisions shows a strong suppression in central Au + Au collisions, indicating substantial energy loss of heavy quarks in the medium produced at RHIC energies. A large azimuthal anisotropy v(2) with respect to the reaction plane is observed for 0.5 < p(T) < 5 GeV/c indicating substantial heavy-flavor elliptic flow. Both R-AA and v(2) show a p(T) dependence different from those of neutral pions. A comparison to transport models which simultaneously describe R-AA(p(T)) and v(2)(p(T)) suggests that the viscosity to entropy density ratio is close to the conjectured quantum lower bound, i.e., near a perfect fluid.

Published
2007

40. Evidence for a Long-Range Component in the Pion Emission Source inAu+AuCollisions atsNN=200 GeV

Author

S. C. Johnson, Y. J. Mao, M. J. Kweon, S. Kametani, Youngil Kwon, T. E. Miller, J. H. Kang, H. Tsuruoka, S. S. Adler, C. L. Silva, J. S. Haggerty, A. Romana, G. S. Kyle, Mate Csanad, R. Santo, James Alexander, J. B. Choi, A. Enokizono, S. Afanasiev, A. Ster, L. Sanfratello, Y. Jeong, R. Averbeck, Byung-Sik Hong, P. Chung, Masayasu Ishihara, F. Messer, A. Bazilevsky, M. Heffner, A. Taranenko, S. Borenstein, G. Gogiberidze, David D'Enterria, V. Bumazhnov, Susumu Sato, K. Ozawa, B. Khachaturov, I. Ravinovich, E. P. Hartouni, Philippe Rosnet, M. Muniruzzaman, S. P. Stoll, T. Matsumoto, Sean A. Kelly, T. L. Thomas, Alexandre Lebedev, Viktor Veszpremi, Joakim Nystrand, Charles Maguire, F. Plasil, T. Peitzmann, Saskia Mioduszewski, G. Bunce, R. P. Pisani, F. Staley, S. Sawada, D. M. Lee, S. Leckey, J. D. Tepe, A. Franz, Atsushi Taketani, Nikolay Tyurin, A. Isupov, Ryugo S. Hayano, S. S. Ryu, V. S. Pantuev, R. du Rietz, Josh Moss, S. S. Kapoor, N. N. Ajitanand, P. Tarján, K. Tanida, J. Gosset, J. P. Sullivan, Y. Riabov, V.A. Onuchin, A. Devismes, S. Belikov, K. S. Joo, M. Harvey, Kenta Shigaki, Senta Greene, M. Nara, W. C. Chang, V. I. Kochetkov, D. Jouan, Hideki Hamagaki, Takahiro Nakamura, G. David, Junji Tojo, I. Tserruya, S. F. Pate, M. Tamai, S. Zhou, Jan Rak, Roy A. Lacey, W. Guryn, K. Okada, C. H. Kuberg, M. A. Volkov, E. Kistenev, O. Dietzsch, H. Delagrange, S. N. White, A. S. Nyanin, E. O'Brien, M. E. Sadler, R. A. Soltz, H. Borel, S. Bathe, R. Granier de Cassagnac, M. Grosse Perdekamp, H. En'yo, P. Constantin, M. J. Leitch, Yves Roland Schutz, C. A. Ogilvie, Dipanwita Dutta, X. R. Wang, Yu. Efremenko, S. P. Sorensen, Yanwen Liu, M. Kopytine, Kensuke Homma, E. Melnikov, S. Yokkaichi, J. M. Heuser, V. Singh, K. El Chenawi, M. R. Shaw, S. Butsyk, T. K. Hemmick, A. Baldisseri, Yasuo Miake, Julia Velkovska, Peter M. Nilsson, Norio Saito, Vladimir Samsonov, A. Durum, M. Rosati, I. Otterlund, V. Papavassiliou, S. Chernichenko, H. Lim, H. Kobayashi, Martin Purschke, M. Velkovsky, Agneta Oskarsson, Shih-Chang Lee, D. Pal, R. Azmoun, G. B. Kim, E. M. Takagui, D. Koehler, D. S. Brown, David Olle Rickard Silvermyr, B. Bassalleck, F. Mühlbacher, L. Ewell, J. G. Boissevain, K. S. Sim, Y. Watanabe, M. Chiu, Ajit Kumar Mohanty, L. Kochenda, Y. Kuroki, Do-Won Kim, P. J. Kroon, A. A. Vinogradov, Henrik Tydesjö, Tamas Ferenc Csorgo, T. A. Shibata, J. G. Lajoie, Jiangyong Jia, T. Hachiya, J. L. Nagle, D. Kotchetkov, S. Bhagavatula, K. Katou, J. T. Mitchell, D. Mukhopadhyay, V. Babintsev, R. S. Towell, Y. Berdnikov, K. Kiyoyama, Dong-Hun Kim, W. Y. Jang, Y. Akiba, Y. Goto, Y. Cobigo, E. H. Kim, D. E. Fields, B. V. Jacak, W. E. Sondheim, A. Kiyomichi, A. G. Hansen, Shingo Sakai, T. Kohama, Z. Fraenkel, C. Pinkenburg, Vladislav Manko, J. E. Frantz, B. K. Nandi, M. D. Marx, K. Imai, I. J. Choi, S. Nagamiya, Kazuhiro Tanaka, Y. Tanaka, M. Stepanov, G. Roche, R. K. Choudhury, V. Ladygin, M. Gonin, D. Isenhower, Klaus Johannes Reygers, N. Grau, N. Kamihara, T. Chujo, A. K. Purwar, T. Ichihara, N. Hayashi, F. K. Wohn, A. Soldatov, X. Camard, A. Glenn, K. Kurita, German Martinez, T. K. Shea, F. Matathias, M. Sivertz, C. Y. Chi, T. K. Ghosh, A. Parmar, Matthew G. Reuter, P. W. Stankus, A. Drees, Hirohiko Sato, S. K. Tuli, I. D. Ojha, Alexander Malakhov, K. N. Barish, G. R. Young, Christine Angela Aidala, I. V. Sourikova, H. Torii, M. Ono, Y. Yang, L. S. Zolin, C. P. Singh, B. M. Johnson, P. D. Barnes, A. Yanovich, Jen-Chieh Peng, Hiroaki Ohnishi, S. Y. Fung, J. Milan, Brian Cole, H. W. Van Hecke, John Hill, K. Oyama, Toru Sugitate, François Fleuret, C. L. Woody, Dong Jo Kim, Osamu Jinnouchi, P. Chand, M. L. Brooks, Alexander Milov, O. Drapier, D. P. Morrison, V. E. Semenov, H. J. Kim, A. G. Litvinenko, H. Buesching, A. Kozlov, R. Seto, L. Villatte, Xingguo Li, X. He, V. Peresedov, H. Masui, J. S. Chai, P. L. McGaughey, J. M. Burward-Hoy, J. Chiba, M. Sakai, Minghui Liu, Kenneth Francis Read, G. C. Mishra, Takao Sakaguchi, C. Klein-Boesing, T. C. Awes, A. D. Frawley, Jun Kikuchi, S. H. Aronson, W. Holzmann, S. Batsouli, Y. I. Makdisi, L. Aphecetche, M. J. Tannenbaum, V. V. Ikonnikov, D. Bucher, A. P.T. Palounek, Wei Xie, A. Deshpande, E. J. Desmond, M. Hibino, S. Garpman, J. Park, R. Amirikas, H. A. Gustafsson, M. I. Nagy, I. E. Yushmanov, M. Issah, Alexei Khanzadeev, E. Vznuzdaev, N. Bruner, E. Stenlund, T. Shiina, R. E. Mischke, C. Zhang, Viktor Riabov, S. Esumi, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, Jason Newby, A. Hoover, J. Murata, and B. D. Fox

Subjects
Physics, Range (particle radiation), Particle physics, SIMPLE (dark matter experiment), 010308 nuclear & particles physics, Component (thermodynamics), Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, General Physics and Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Resonance (particle physics), Nuclear physics, Pion, 0103 physical sciences, Halo, Nuclear Experiment, 010306 general physics, Astrophysics::Galaxy Astrophysics
Abstract

Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at s(NN)=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.

Published
2007

41. Elliptic flow for phi mesons and (anti)deuterons in Au+Au collisions at square root of sNN=200 GeV

Author

S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, T, Chujo, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, K, Das, G, David, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, D E, Fields, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, S-Y, Fung, S, Gadrat, F, Gastineau, M, Germain, A, Glenn, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, J S, Haggerty, M N, Hagiwara, H, Hamagaki, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, J M, Heuser, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, M G, Hur, T, Ichihara, K, Imai, M, Inaba, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, T, Kawagishi, A V, Kazantsev, S, Kelly, A, Khanzadeev, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, P J, Kroon, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, M J, Leitch, M A L, Leite, H, Lim, A, Litvinenko, M X, Liu, X H, Li, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, H, Masui, F, Matathias, M C, McCain, P L, McGaughey, Y, Miake, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, J T, Mitchell, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, T, Nakamura, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, O O, Omiwade, A, Oskarsson, I, Otterlund, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, V, Samsonov, H D, Sato, S, Sato, S, Sawada, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, S, Skutnik, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, J, Tojo, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, vanHecke, J, Velkovska, R, Vertesi, A A, Vinogradov, E, Vznuzdaev, M, Wagner, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, A, Yanovich, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, J, Zimányi, and L, Zolin

Abstract

Differential elliptic flow (v(2)) for phi mesons and (anti)deuterons (d)d is measured for Au+Au collisions at square root of sNN=200 GeV. The v(2) for phi mesons follows the trend of lighter pi+/- and K+/- mesons, suggesting that ordinary hadrons interacting with standard hadronic cross sections are not the primary driver for elliptic flow development. The v(2) values for (d)d suggest that elliptic flow is additive for composite particles. This further validation of the universal scaling of v(2) per constituent quark for baryons and mesons suggests that partonic collectivity dominates the transverse expansion dynamics.

Published
2007

42. High transverse momentum η meson production inp+p,d+Au, and Au+Au collisions atsNN=200GeV

Author

D. E. Fields, B. V. Jacak, A. K. Purwar, N. N. Ajitanand, Takahiro Nakamura, M. E. Sadler, A. Durum, D. S. Brown, M. Rosati, Alexander Milov, S. S. Adler, G. S. Kyle, H. Tsuruoka, Y. Yang, C. P. Singh, Mate Csanad, J. Gosset, B. D. Fox, J. P. Sullivan, N. Willis, James Alexander, T. L. Thomas, M. Velkovsky, R. A. Soltz, H. Borel, R. Kohara, Jan Rak, W. Guryn, Y. Jeong, R. Averbeck, Byung-Sik Hong, B. M. Johnson, T. E. Miller, Alexei Khanzadeev, A. Bazilevsky, O. Drapier, S. Butsyk, Philippe Rosnet, C. H. Kuberg, M. Grosse Perdekamp, J. Chiba, R. Santo, David D'Enterria, C. L. Silva, S. P. Stoll, Hiroaki Ohnishi, J. Milan, N. Bruner, E. Stenlund, Vladimir Samsonov, L. Sanfratello, A. A. Vinogradov, Henrik Tydesjö, N. Grau, Alexandre Lebedev, D. M. Lee, A. Isupov, Xiaopeng Zong, R. P. Pisani, S. Afanasiev, M. Sakai, Ryugo S. Hayano, Robert F. Hobbs, A. Enokizono, E. R. Kinney, D. P. Morrison, V. E. Semenov, S. Borenstein, J. Zimányi, A. Pierson, Masayasu Ishihara, J. S. Chai, K. Ozawa, Nikolay Tyurin, S. Yokkaichi, I. Otterlund, B. Komkov, P. L. McGaughey, K. A. Drees, Youngil Kwon, Yuri Efremenko, J. M. Burward-Hoy, J. M. Heuser, Y. Riabov, Susumu Sato, M. Issah, Jiangyong Jia, Y. Goto, J. M. Qualls, M. Muniruzzaman, S. S.E. Rosendahl, G. Bunce, A. Ster, Kenta Shigaki, Norio Saito, Shih-Chang Lee, M. Kaufman, A. Devismes, M. A. L. Leite, Brian Cole, F. Staley, E. Vznuzdaev, Y. J. Mao, S. Kametani, S. Batsouli, S. Sawada, Paul Stankus, J. D. Tepe, K. Tanida, Y. Tanaka, Jen-Chieh Peng, K. S. Sim, T. K. Shea, Y. Watanabe, A. Franz, F. Kajihara, V. S. Pantuev, Tamas Ferenc Csorgo, G. C. Mishra, V-N. Tram, V. I. Kochetkov, A. S. Nyanin, Pàl Hidas, J. H. Kang, M. Harvey, S. S. Kapoor, J. S. Haggerty, David Olle Rickard Silvermyr, H. Delagrange, T. Shiina, D. Jouan, A. Romana, Yi Liu, B. Espagnon, Junji Tojo, M. A. Volkov, A. V. Kazantsev, R. Durietz, Motoi Inaba, J. L. Nagle, F. Messer, Gerd Joachim Kunde, V. Babintsev, H. Hiejima, S. F. Pate, L. Aphecetche, M. Kopytine, S. Zhou, Takeo Kawabata, I. Shein, M. C. McCain, K. Okada, M. Heffner, A. Taranenko, E. H. Kim, B. Sahlmueller, H. En'yo, T. Peitzmann, P. Constantin, A. Baldisseri, C. A. Ogilvie, J. B. Choi, M. Inuzuka, Soren Pontoppidan Sorensen, Hideki Hamagaki, K. Aoki, X. R. Wang, M. J. Leitch, Takao Sakaguchi, G. Gogiberidze, Saskia Mioduszewski, K. Imai, P. Tarján, Sean A. Kelly, T. K. Hemmick, Viktor Veszpremi, G. David, T. Kohama, H. Pei, Yasuo Miake, V. Papavassiliou, O. Dietzsch, Yoichiro Fukao, K. Das, M. Chiu, Ajit Kumar Mohanty, C. Klein-Boesing, Dong Jo Kim, T. A. Shibata, Sébastien Gadrat, J. G. Boissevain, Masashi Kaneta, B. Khachaturov, T. Matsumoto, K. Katou, K. Hasuko, L. Kochenda, K. Kiyoyama, E. P. Hartouni, Dipanwita Dutta, B. K. Nandi, Osamu Jinnouchi, C. Zhang, Jun Kikuchi, A. Kiyomichi, Xingguo Li, C. Pinkenburg, Hiroyuki Okada, Y. Kuroki, A. D. Frawley, W. Y. Jang, Anne Marie Sickles, Julia Velkovska, E. J. Desmond, I. V. Sourikova, H. Torii, Joakim Nystrand, M. Stepanov, G. Roche, V. Ladygin, M. Gonin, H. J. Kim, D. Isenhower, Senta Greene, M. Nara, Do-Won Kim, P. J. Kroon, V.N. Penev, Dong-Hun Kim, Jean-Pierre Cussonneau, I. Tserruya, German Martinez, V. Bumazhnov, M. P. Comets, M. Togawa, Ferenc Deák, R. G. De Cassagnac, Minghui Liu, N. Kamihara, Wei Xie, M. Hibino, E. O'Brien, V. Singh, A. Deshpande, J. Park, Florian Bauer, F. Matathias, R. Armendariz, Kenneth Francis Read, K. Kurita, L. Villatte, S. H. Aronson, G. B. Kim, A. P.T. Palounek, Yves Roland Schutz, A. Drees, D. Koehler, H. Pereira, M. Sivertz, Y. Tsuchimoto, Charles Maguire, S. Leckey, S. Garpman, R. Amirikas, D. Pal, W. Holzmann, Josh Moss, W. C. Chang, J. L. Drachenberg, I. E. Yushmanov, Maya Hachiya Shimomura, Hirohiko Sato, S. K. Tuli, Roy A. Lacey, H. A. Gustafsson, M. Tamai, E. M. Takagui, R. S. Towell, E. Kistenev, Y. I. Makdisi, Peter M. Nilsson, R. E. Mischke, A. G. Hansen, Shingo Sakai, Ch. Finck, Jason Newby, J. G. Lajoie, T. Hachiya, J. Murata, I. J. Choi, N. Hayashi, Viktor Riabov, C. Y. Chi, M. J. Tannenbaum, S. Esumi, V. V. Ikonnikov, W. A. Zajc, D. Bucher, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, T. Horaguchi, A. Hoover, V.A. Onuchin, S. Belikov, K. S. Joo, K. El Chenawi, M. R. Shaw, Marie Germain, H. W. Van Hecke, S. C. Johnson, M. J. Kweon, A. G. Litvinenko, Y. Le Bornec, Kensuke Homma, E. Melnikov, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, A. Kiss, T. Ichihara, M. Konno, A. Kozlov, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, G. R. Young, R. Seto, Atsushi Taketani, Henner Buesching, C. L. Woody, M. T. Bjorndal, I. D. Ojha, Alexander Malakhov, J. T. Mitchell, V. Dzhordzhadze, Martin Purschke, P. Chand, Vladislav Manko, X. He, M. D. Marx, L. S. Zolin, W. J. Park, T. Chujo, V. Peresedov, X. Camard, A. Parmar, D. Kotchetkov, S. Bhagavatula, Christine Angela Aidala, P. D. Barnes, A. Yanovich, Z. Fraenkel, H. Masui, R. K. Choudhury, S. N. White, H. Kobayashi, S. Takagi, S. Bathe, Terry C Awes, K. N. Barish, Agneta Oskarsson, Y. Berdnikov, M. Ono, A. Soldatov, W. E. Sondheim, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, T. J. Uam, S. Y. Fung, M. L. Brooks, John Hill, K. Oyama, Toru Sugitate, L. D. Isenhower, R. Azmoun, D. Mukhopadhyay, Y. Cobigo, I. Ravinovich, François Fleuret, F. Plasil, S. S. Ryu, Ahmed Al-Jamel, J. E. Frantz, A. Glenn, and V. L. Rykov

Subjects
Physics, Nuclear and High Energy Physics, Annihilation, Meson, 010308 nuclear & particles physics, Nuclear Theory, Parton, Electron, 7. Clean energy, 01 natural sciences, Nuclear physics, Momentum, Deuterium, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

Inclusive transverse momentum spectra of eta mesons in the range p(T)approximate to 2-12 GeV/c have been measured at midrapidity (vertical bar eta vertical bar gamma gamma channel for the three colliding systems as well as through the eta ->pi(0)pi(+)pi(-) decay mode in p+p and d+Au collisions. The nuclear modification factor in d+Au collisions, R-dAu(p(T))approximate to 1.0-1.1, suggests at most only modest p(T) broadening ("Cronin enhancement"). In central Au+Au reactions, the eta yields are significantly suppressed, with R-AuAu(p(T))approximate to 0.2. The ratio of eta to pi(0) yields is approximately constant as a function of p(T) for the three colliding systems in agreement with the high-p(T) world average of R-eta/pi(0)approximate to 0.5 in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions for a wide range of center-of-mass energies (root sNN approximate to 3-1800 GeV) as well as, for high scaled momentum x(p), in e(+)e(-) annihilations at root s=91.2 GeV. These results are consistent with a scenario where high-p(T) eta production in nuclear collisions at the Relativistic Heavy Ion Collider is largely unaffected by initial-state effects but where light-quark mesons (pi(0),eta) are equally suppressed due to final-state interactions of the parent partons in the dense medium produced in Au+Au reactions.

Published
2007

43. Measurement of Direct Photon Production inp+pCollisions ats=200 GeV

Author

J. E. Frantz, Herve Borel, A. Glenn, Alexei Khanzadeev, S. Afanasiev, A. Ster, V. L. Rykov, N. Bruner, M. Heffner, Robert F. Hobbs, A. Taranenko, B. Khachaturov, T. Matsumoto, K. Hasuko, Hiroyuki Okada, Joakim Nystrand, J. M. Burward-Hoy, R. A. Soltz, M. Grosse Perdekamp, O. Zaudtke, A. Pierson, J. L. Drachenberg, David Olle Rickard Silvermyr, S. Sawada, J. G. Boissevain, A. Franz, D. Mukhopadhyay, Y. Cobigo, Masashi Kaneta, I. Ravinovich, K. Katou, P. Tarján, Sean A. Kelly, S. S. Ryu, Viktor Veszpremi, Ahmed Al-Jamel, Anne Marie Sickles, C. Pinkenburg, S. Y. Fung, M. Stepanov, L. Sanfratello, T. L. Thomas, G. Roche, T. E. Miller, J. Gosset, Senta Greene, K. Ozawa, E. J. Desmond, V. Bumazhnov, M. P. Comets, J. P. Sullivan, C. H. Kuberg, J. Chiba, R. Santo, D. E. Fields, E. O'Brien, Jean-Pierre Cussonneau, O. Dietzsch, M. Togawa, S. P. Sorensen, B. V. Jacak, J. Park, Wei Xie, G. R. Young, Florian Bauer, Dipanwita Dutta, B. D. Fox, S. Yokkaichi, J. M. Heuser, Ryugo S. Hayano, A. Deshpande, X. He, A. K. Purwar, John Hill, K. Oyama, Y. Tsuchimoto, W. C. Chang, M. Rosati, M. Velkovsky, Ferenc Deák, N. Kamihara, I. E. Yushmanov, Roy A. Lacey, Y. J. Mao, J. T. Mitchell, Bruno Espagnon, A. A. Vinogradov, S. Kametani, S. S. Adler, G. S. Kyle, Y. Tanaka, Toru Sugitate, Henrik Tydesjö, L. D. Isenhower, V. Peresedov, Pàl Hidas, T. K. Shea, V-N. Tram, J. H. Kang, G. C. Mishra, M. Chiu, Ajit Kumar Mohanty, Youngil Kwon, T. A. Shibata, Takao Sakaguchi, J. G. Lajoie, Y. Riabov, T. Hachiya, Kenta Shigaki, S. Butsyk, P. L. McGaughey, Jiangyong Jia, Y. Goto, V. S. Pantuev, Vladimir Samsonov, C. Klein-Boesing, N. N. Ajitanand, J. S. Haggerty, S. F. Pate, A. Romana, M. Harvey, Ch. Finck, Jason Newby, Junji Tojo, A. S. Nyanin, K. S. Sim, D. Isenhower, X. R. Wang, A. D. Frawley, François Fleuret, Ingvar Otterlund, I. J. Choi, M. Gonin, V.N. Penev, Takahiro Nakamura, F. Matathias, R. Armendariz, German Martinez, K. Okada, Tamas Ferenc Csorgo, Charles Maguire, A. Kiss, Motoi Inaba, S. Leckey, Y. Watanabe, K. Kurita, H. Pereira, Anders Nils Erik Oskarsson, J. L. Nagle, T. Ichihara, F. K. Wohn, Matthew G. Reuter, Vladislav Manko, Henner Buesching, S. H. Aronson, M. Issah, H. En'yo, P. Constantin, W. Holzmann, H. Masui, V. Papavassiliou, A. Durum, Sébastien Gadrat, A. Drees, A. V. Kazantsev, I. D. Ojha, A. Devismes, M. J. Leitch, Alexander Malakhov, Hiroaki Ohnishi, F. Kajihara, Josh Moss, D. S. Brown, C. L. Woody, H. Hiejima, Mate Csanad, E. Vznuzdaev, N. Willis, L. S. Zolin, James Alexander, J. M. Qualls, T. Chujo, H. Delagrange, Maya Hachiya Shimomura, Y. I. Makdisi, Marie Germain, W. J. Park, K. Das, X. Camard, N. Grau, C. Zhang, P. D. Barnes, A. G. Litvinenko, A. Yanovich, E. Kistenev, S. Zhou, Xingguo Li, P. Chand, R. Averbeck, Byung-Sik Hong, E. P. Hartouni, K. Imai, David D'Enterria, Martin Purschke, Evert Anders Stenlund, A. G. Hansen, M. A. Volkov, S. N. White, Shingo Sakai, A. Kozlov, R. Seto, H. W. Vanhecke, Christine Angela Aidala, A. Bazilevsky, Jan Rak, R. P. Pisani, M. J. Tannenbaum, Nikolay Tyurin, D. Kotchetkov, V. Dzhordzhadze, H. Pei, Viktor Riabov, S. Takagi, W. E. Sondheim, V. V. Ikonnikov, R. Granier de Cassagnac, Yoichiro Fukao, K. N. Barish, T. C. Awes, L. Aphecetche, Takeo Kawabata, M. C. McCain, C. A. Ogilvie, Jun Kikuchi, M. T. Bjorndal, D. Bucher, T. K. Hemmick, Yasuo Miake, S. Batsouli, I. V. Sourikova, H. Torii, Z. Fraenkel, P. W. Stankus, Philippe Rosnet, T. J. Uam, Minghui Liu, H. J. Kim, L. Kochenda, Kenneth Francis Read, M. L. Brooks, Alexandre Lebedev, R. Kohara, A. P.T. Palounek, Kensuke Homma, A. Soldatov, S. P. Stoll, K. Tanida, S. Esumi, S. S.E. Rosendahl, G. Bunce, D. M. Lee, V. I. Kochetkov, S. Chernichenko, R. K. Choudhury, W. A. Zajc, H. Lim, Xiaopeng Zong, D. Jouan, B. Bassalleck, V. Baublis, A. Denisov, V. Cianciolo, M. Inuzuka, Hideki Hamagaki, K. Aoki, G. David, S. C. Johnson, M. Konno, Sergey Fokin, Gerd Joachim Kunde, H. Kobayashi, S. Bathe, I. Shein, Saskia Mioduszewski, T. Horaguchi, A. Hoover, E. H. Kim, M. J. Kweon, Y. Le Bornec, Y. Akiba, P. J. Kroon, S. Nagamiya, Yves Roland Schutz, Kazuhiro Tanaka, Alberto Baldisseri, Klaus Johannes Reygers, C. L. Silva, D. Pal, Masayasu Ishihara, Susumu Sato, E. M. Takagui, M. Muniruzzaman, Atsushi Taketani, F. Staley, S. Belikov, K. S. Joo, B. Komkov, Hans-Åke Gustafsson, B. M. Johnson, Norio Saito, M. A. L. Leite, A. Isupov, V. Babintsev, Brian Cole, R. S. Towell, Akio Kiyomichi, C. Y. Chi, Jen-Chieh Peng, Dong Jo Kim, Osamu Jinnouchi, I. Tserruya, Yu. Efremenko, G. B. Kim, Hirohiko Sato, J. Velkovska, Alexander Milov, O. Drapier, E. R. Kinney, D. P. Morrison, V. E. Semenov, and J. Zimányi

Subjects
Quantum chromodynamics, Physics, Photon, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, General Physics and Astronomy, Parton, Jet (particle physics), 01 natural sciences, 7. Clean energy, Nuclear physics, Transverse plane, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

Cross sections for midrapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for transverse momenta of 3 5 GeV/c, where the uncertainties of the measurement and theory are comparable. We also report on the effect of requiring the photons to be isolated from parton jet energy. The observed fraction of isolated photons is well described by pQCD for p(T)> 7 GeV/c.

Published
2007

44. Measurement of direct photon production in p + p collisions at $\sqrt{s}$ = 200 GeV

Author

S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, A, Al-Jamel, J, Alexander, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, R, Averbeck, T C, Awes, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, M T, Bjorndal, J G, Boissevain, H, Borel, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, J P, Cussonneau, D, d'Enterria, K, Das, G, David, F, Deák, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, J L, Drachenberg, O, Drapier, A, Drees, A, Durum, D, Dutta, V, Dzhordzhadze, Y V, Efremenko, H, En'yo, B, Espagnon, S, Esumi, D E, Fields, C, Finck, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, S-Y, Fung, S, Gadrat, M, Germain, A, Glenn, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, K, Hasuko, R, Hayano, X, He, M, Heffner, T K, Hemmick, J M, Heuser, P, Hidas, H, Hiejima, J C, Hill, R, Hobbs, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Horaguchi, T, Ichihara, V V, Ikonnikov, K, Imai, M, Inaba, M, Inuzuka, D, Isenhower, L, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, K, Katou, T, Kawabata, A V, Kazantsev, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D J, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, R, Kohara, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, G J, Kunde, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, J G, Lajoie, Y, Le Bornec, A, Lebedev, S, Leckey, D M, Lee, M J, Leitch, M A L, Leite, X H, Li, H, Lim, A, Litvinenko, M X, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, H, Masui, F, Matathias, T, Matsumoto, M C, McCain, P L, McGaughey, Y, Miake, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, D, Mukhopadhyay, M, Muniruzzaman, S, Nagamiya, J L, Nagle, T, Nakamura, J, Newby, A S, Nyanin, J, Nystrand, E, O'brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, V, Penev, J-C, Peng, H, Pereira, V, Peresedov, A, Pierson, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, J M, Qualls, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, V L, Rykov, S S, Ryu, N, Saito, T, Sakaguchi, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, T K, Shea, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, A, Sickles, C L, Silva, D, Silvermyr, K S, Sim, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, J, Tojo, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, H, Tydesjö, N, Tyurin, T J, Uam, J, Velkovska, M, Velkovsky, V, Veszprémi, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, N, Willis, F K, Wohn, C L, Woody, W, Xie, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, S, Zhou, J, Zimányi, L, Zolin, X, Zong, H W, Van Hecke, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PHENIX, Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
High Energy Physics - Experiment (hep-ex), 13.85.Qk, 25.75.Dw, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract

Cross sections for mid-rapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for 3 < p_T < 16 GeV/c. Next-to-leading order (NLO) perturbative QCD (pQCD) describes the data well for p_T > 5 GeV/c, where the uncertainties of the measurement and theory are comparable. We also report on the effect of requiring the photons to be isolated from parton jet energy. The observed fraction of isolated photons is well described by pQCD for p_T > 7 GeV/c., 330 authors, 6 pages text, 3 figures, one table. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

Published
2007

45. System size and energy dependence of jet-induced hadron pair correlation shapes in Cu+Cu and Au+Au collisions at square root sNN=200 and 62.4 GeV

Author

A, Adare, S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, J, Asai, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, G, Baksay, L, Baksay, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, A A, Bickley, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, S, Campbell, J-S, Chai, P, Chand, B S, Chang, W C, Chang, J-L, Charvet, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, T, Chujo, P, Chung, A, Churyn, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, J P, Cussonneau, T, Dahms, K, Das, G, David, F, Deák, M B, Deaton, K, Dehmelt, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, A, Dion, M, Donadelli, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, D, Dutta, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, F, Ellinghaus, W S, Emam, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, K O, Eyser, D E, Fields, C, Finck, M, Finger, F, Fleuret, S L, Fokin, B, Forestier, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, S-Y, Fung, T, Fusayasu, S, Gadrat, I, Garishvili, F, Gastineau, M, Germain, A, Glenn, H, Gong, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, C, Haegemann, J S, Haggerty, M N, Hagiwara, H, Hamagaki, R, Han, A G, Hansen, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, T, Hester, J M, Heuser, X, He, P, Hidas, H, Hiejima, J C, Hill, R, Hobbs, M, Hohlmann, M, Holmes, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Horaguchi, D, Hornback, M G, Hur, T, Ichihara, V V, Ikonnikov, K, Imai, M, Inaba, Y, Inoue, M, Inuzuka, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, M, Kaneta, J H, Kang, H, Kanou, K, Katou, T, Kawabata, T, Kawagishi, D, Kawall, A V, Kazantsev, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, E, Kim, G-B, Kim, H J, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, J, Klay, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, R, Kohara, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, P J, Kroon, J, Kubart, C H, Kuberg, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, Y-S, Lai, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, T, Lee, M J, Leitch, M A L, Leite, B, Lenzi, H, Lim, T, Liska, A, Litvinenko, M X, Liu, X, Li, X H, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, Y, Mao, G, Martinez, L, Masek, H, Masui, F, Matathias, T, Matsumoto, M C, McCain, M, McCumber, P L, McGaughey, Y, Miake, P, Mikes, K, Miki, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, M, Mishra, J T, Mitchell, M, Mitrovski, A K, Mohanty, A, Morreale, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, S X, Oda, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, M, Oka, O O, Omiwade, A, Oskarsson, I, Otterlund, M, Ouchida, K, Oyama, K, Ozawa, R, Pak, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, V, Penev, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, A, Pierson, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, J M, Qualls, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, S, Rembeczki, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, H, Sakata, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, J, Seele, R, Seidl, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, A, Shevel, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, C, Silvestre, K S, Sim, C P, Singh, V, Singh, S, Skutnik, M, Slunecka, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, A, Toia, J, Tojo, L, Tomásek, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, T J, Uam, C, Vale, H, Valle, H W, vanHecke, J, Velkovska, M, Velkovsky, R, Vertesi, V, Veszprémi, A A, Vinogradov, M, Virius, M A, Volkov, V, Vrba, E, Vznuzdaev, M, Wagner, D, Walker, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, F K, Wohn, C L, Woody, M, Wysocki, W, Xie, Y L, Yamaguchi, A, Yanovich, Z, Yasin, J, Ying, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, S, Zhou, J, Zimányi, L, Zolin, and X, Zong

Abstract

We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at square root sNN=62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from Delta phi=pi in central and semicentral collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models.

Published
2006

46. J/psi production versus centrality, transverse momentum, and rapidity in Au+Au collisions at square root sNN=200 GeV

Author

A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, J, Asai, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, G, Baksay, L, Baksay, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, A A, Bickley, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, B S, Chang, J-L, Charvet, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, T, Chujo, P, Chung, A, Churyn, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, K, Das, G, David, M B, Deaton, K, Dehmelt, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, F, Ellinghaus, W S, Emam, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, K O, Eyser, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, S-Y, Fung, T, Fusayasu, S, Gadrat, I, Garishvili, F, Gastineau, M, Germain, A, Glenn, H, Gong, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, C, Haegemann, J S, Haggerty, M N, Hagiwara, H, Hamagaki, R, Han, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, T, Hester, J M, Heuser, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Hohlmann, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, M G, Hur, T, Ichihara, K, Imai, M, Inaba, Y, Inoue, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, M, Kaneta, J H, Kang, H, Kanou, T, Kawagishi, D, Kawall, A V, Kazantsev, S, Kelly, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, J, Klay, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, P J, Kroon, J, Kubart, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, Y-S, Lai, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, T, Lee, M J, Leitch, M A L, Leite, B, Lenzi, H, Lim, T, Liska, A, Litvinenko, M X, Liu, X, Li, X H, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, Y, Mao, L, Masek, H, Masui, F, Matathias, M C, McCain, M, McCumber, P L, McGaughey, Y, Miake, P, Mikes, K, Miki, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, M, Mishra, J T, Mitchell, M, Mitrovski, A, Morreale, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, S X, Oda, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, M, Oka, O O, Omiwade, A, Oskarsson, I, Otterlund, M, Ouchida, K, Ozawa, R, Pak, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, S, Rembeczki, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, H, Sakata, V, Samsonov, H D, Sato, S, Sato, S, Sawada, J, Seele, R, Seidl, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, A, Shevel, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, C, Silvestre, K S, Sim, C P, Singh, V, Singh, S, Skutnik, M, Slunecka, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, A, Toia, J, Tojo, L, Tomásek, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, van Hecke, J, Velkovska, R, Vertesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, M, Wagner, D, Walker, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, Y, Yamaguchi, A, Yanovich, Z, Yasin, J, Ying, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, S, Zhou, J, Zimányi, and L, Zolin

Abstract

The PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) has measured J/psi production for rapidities -2.2y2.2 in Au+Au collisions at square root sNN=200 GeV. The J/psi invariant yield and nuclear modification factor RAA as a function of centrality, transverse momentum, and rapidity are reported. A suppression of J/psi relative to binary collision scaling of proton-proton reaction yields is observed. Models which describe the lower energy J/psi data at the CERN Super Proton Synchrotron invoking only J/psi destruction based on the local medium density predict a significantly larger suppression at RHIC and more suppression at midrapidity than at forward rapidity. Both trends are contradicted by our data.

Published
2006

47. Jet properties from dihadron correlations inp+pcollisions ats=200 GeV

Author

N. Grau, K. Tanida, B. D. Fox, V. I. Kochetkov, P. W. Stankus, S. Takagi, K. N. Barish, H. Kobayashi, S. Bathe, Kensuke Homma, Gerd Joachim Kunde, B. M. Johnson, R. A. Soltz, I. Shein, S. S. Adler, G. S. Kyle, T. J. Uam, M. Grosse Perdekamp, N. Willis, James Alexander, S. Chernichenko, H. Lim, M. L. Brooks, Y. Akiba, C. H. Kuberg, K. Das, Alberto Baldisseri, R. Averbeck, B. Bassalleck, Byung-Sik Hong, S. Nagamiya, Brian Cole, Alexei Khanzadeev, A. Bazilevsky, Kazuhiro Tanaka, M. Konno, J. Chiba, A. Pierson, Philippe Rosnet, Klaus Johannes Reygers, N. Bruner, X. He, Alexandre Lebedev, E. P. Hartouni, V. Peresedov, H. Masui, D. M. Lee, G. C. Mishra, Takao Sakaguchi, David Olle Rickard Silvermyr, J. Gosset, J. P. Sullivan, X. Zong, Saskia Mioduszewski, Marie Germain, C. L. Silva, Hiroaki Ohnishi, A. G. Litvinenko, A. Kozlov, R. Seto, J. M. Qualls, E. H. Kim, V. Bumazhnov, M. P. Comets, V. Dzhordzhadze, C. Klein-Boesing, Yves Roland Schutz, A. D. Frawley, J. T. Mitchell, O. Dietzsch, S. C. Johnson, P. L. McGaughey, M. J. Kweon, Masayasu Ishihara, Susumu Sato, D. Pal, Y. Le Bornec, T. Ichihara, F. K. Wohn, R. Kohara, D. E. Fields, S. H. Aronson, Sean A. Kelly, Vladislav Manko, E. M. Takagui, R. S. Towell, B. V. Jacak, Viktor Veszpremi, M. Inuzuka, Hideki Hamagaki, Dipanwita Dutta, Matthew G. Reuter, G. David, Akio Kiyomichi, S. Yokkaichi, J. M. Heuser, I. D. Ojha, Alexander Malakhov, M. Muniruzzaman, F. Staley, A. K. Purwar, W. Holzmann, Maya Hachiya Shimomura, T. Chujo, H. W. Van Hecke, J. E. Frantz, X. Camard, T. L. Thomas, M. Rosati, P. Tarján, W. C. Chang, Xingguo Li, L. S. Zolin, Y. I. Makdisi, E. J. Desmond, M. Velkovsky, J. G. Boissevain, Masashi Kaneta, B. Komkov, A. Kiss, C. Y. Chi, Herve Borel, Christine Angela Aidala, Senta Greene, Jean-Pierre Cussonneau, W. J. Park, A. Glenn, K. Katou, Alexander Milov, S. P. Stoll, M. Togawa, Hans-Åke Gustafsson, Atsushi Taketani, J. M. Burward-Hoy, Roy A. Lacey, Y. Tanaka, T. K. Shea, Norio Saito, P. D. Barnes, A. Yanovich, Henner Buesching, C. L. Woody, J. Park, M. J. Tannenbaum, M. Gonin, B. Khachaturov, A. A. Vinogradov, Henrik Tydesjö, T. Matsumoto, C. Pinkenburg, M. A. L. Leite, V.N. Penev, Florian Bauer, E. O'Brien, V. L. Rykov, Jiangyong Jia, Y. Goto, P. Chand, Ryugo S. Hayano, M. T. Bjorndal, Martin Purschke, N. N. Ajitanand, Anne Marie Sickles, S. Butsyk, Vladimir Samsonov, S. N. White, S. S.E. Rosendahl, G. Bunce, V. V. Ikonnikov, Takahiro Nakamura, Y. Tsuchimoto, D. Bucher, M. Stepanov, G. Roche, Y. J. Mao, K. Hasuko, K. Kurita, S. Kametani, Y. J. Kwon, D. Kotchetkov, I. E. Yushmanov, Z. Fraenkel, L. Sanfratello, Tamas Ferenc Csorgo, W. E. Sondheim, Minghui Liu, Y. Riabov, Pàl Hidas, J. H. Kang, J. S. Haggerty, A. Romana, P. J. Kroon, Kenta Shigaki, V. Babintsev, Hiroyuki Okada, Joakim Nystrand, A. Durum, J. L. Nagle, G. R. Young, R. K. Choudhury, S. Belikov, K. S. Joo, H. Pereira, S. Y. Fung, D. S. Brown, J. L. Drachenberg, Y. Watanabe, D. Jouan, Charles Maguire, S. Leckey, D. Mukhopadhyay, K. Ozawa, S. Esumi, Y. Cobigo, A. S. Nyanin, O. Drapier, E. R. Kinney, D. P. Morrison, I. Ravinovich, Anders Nils Erik Oskarsson, Kenneth Francis Read, S. P. Sorensen, John Hill, K. Oyama, A. V. Kazantsev, Ferenc Deák, N. Kamihara, Ch. Finck, S. Afanasiev, Jason Newby, A. Ster, Josh Moss, Toru Sugitate, L. D. Isenhower, A. Isupov, A. Soldatov, F. Matathias, R. Armendariz, V. E. Semenov, S. S. Ryu, V. S. Pantuev, E. Kistenev, François Fleuret, M. Harvey, J. G. Lajoie, T. Hachiya, K. S. Sim, Junji Tojo, Ahmed Al-Jamel, J. Zimányi, A. Drees, L. Aphecetche, W. A. Zajc, Ingvar Otterlund, K. Okada, I. J. Choi, H. Pei, H. En'yo, P. Constantin, M. A. Volkov, Takeo Kawabata, M. C. McCain, M. J. Leitch, V. Baublis, K. Aoki, M. Heffner, C. A. Ogilvie, T. K. Hemmick, H. Hiejima, Yoichiro Fukao, H. J. Kim, Yasuo Miake, A. Taranenko, A. Denisov, L. Kochenda, V. Cianciolo, K. Imai, T. C. Awes, Jun Kikuchi, Jen-Chieh Peng, Evert Anders Stenlund, Jan Rak, A. G. Hansen, Shingo Sakai, Sergey Fokin, R. Granier de Cassagnac, T. Horaguchi, A. Hoover, I. V. Sourikova, H. Torii, M. Issah, E. Vznuzdaev, C. Zhang, Wei Xie, A. Deshpande, Viktor Riabov, Dong Jo Kim, Osamu Jinnouchi, S. Batsouli, A. P.T. Palounek, I. Tserruya, Yu. Efremenko, G. B. Kim, Hirohiko Sato, J. Velkovska, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, D. Isenhower, German Martinez, A. Devismes, F. Kajihara, H. Delagrange, S. Zhou, T. E. Miller, R. Santo, Robert F. Hobbs, S. Sawada, A. Franz, B. Espagnon, S. F. Pate, X. R. Wang, V. Papavassiliou, Sébastien Gadrat, Mate Csanad, David D'Enterria, R. P. Pisani, Nikolay Tyurin, V-N. Tram, and Motoi Inaba

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, 01 natural sciences, Spectral line
Abstract

The properties of jets produced in p+p collisions at root s=200 GeV are measured using the method of two-particle correlations. The trigger particle is a leading particle from a large transverse momentum jet while the associated particle comes from either the same jet or the away-side jet. Analysis of the angular width of the near-side peak in the correlation function determines the jet-fragmentation transverse momentum j(T). The extracted value, root =585 +/- 6(stat)+/- 15(sys) MeV/c, is constant with respect to the trigger particle transverse momentum, and comparable to the previous lower root s measurements. The width of the away-side peak is shown to be a convolution of j(T) with the fragmentation variable, z, and the partonic transverse momentum, k(T). The is determined through a combined analysis of the measured pi(0) inclusive and associated spectra using jet-fragmentation functions measured in e(+)e(-) collisions. The final extracted values of k(T) are then determined to also be independent of the trigger particle transverse momentum, over the range measured, with value of root =2.68 +/- 0.07(stat)+/- 0.34(sys) GeV/c.

Published
2006

48. Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu Collisions at sqrt[s NN]=200 GeV

Author

A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, A, Al-Jamel, K, Aoki, L, Aphecetche, R, Armendariz, S H, Aronson, J, Asai, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, G, Baksay, L, Baksay, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, R, Bennett, Y, Berdnikov, A A, Bickley, M T, Bjorndal, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, D S, Brown, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, S, Campbell, J-S, Chai, B S, Chang, J-L, Charvet, S, Chernichenko, J, Chiba, C Y, Chi, M, Chiu, I J, Choi, T, Chujo, P, Chung, A, Churyn, V, Cianciolo, C R, Cleven, Y, Cobigo, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, K, Das, G, David, M B, Deaton, K, Dehmelt, H, Delagrange, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, J L, Drachenberg, O, Drapier, A, Drees, A K, Dubey, A, Durum, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, F, Ellinghaus, W S, Emam, A, Enokizono, H, En'yo, B, Espagnon, S, Esumi, K O, Eyser, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, B, Forestier, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, S-Y, Fung, T, Fusayasu, S, Gadrat, I, Garishvili, F, Gastineau, M, Germain, A, Glenn, H, Gong, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, T, Hachiya, A, Hadj Henni, C, Haegemann, J S, Haggerty, M N, Hagiwara, H, Hamagaki, R, Han, H, Harada, E P, Hartouni, K, Haruna, M, Harvey, E, Haslum, K, Hasuko, R, Hayano, M, Heffner, T K, Hemmick, T, Hester, J M, Heuser, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Hohlmann, M, Holmes, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, M G, Hur, T, Ichihara, K, Imai, M, Inaba, Y, Inoue, D, Isenhower, L, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, B V, Jacak, J, Jia, J, Jin, O, Jinnouchi, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, M, Kaneta, J H, Kang, H, Kano, H, Kanou, T, Kawagishi, D, Kawall, A V, Kazantsev, S, Kelly, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, E, Kim, Y-S, Kim, E, Kinney, A, Kiss, E, Kistenev, A, Kiyomichi, J, Klay, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, P J, Kroon, J, Kubart, G J, Kunde, N, Kurihara, K, Kurita, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, Y-S, Lai, J G, Lajoie, A, Lebedev, Y, Le Bornec, S, Leckey, D M, Lee, M K, Lee, T, Lee, M J, Leitch, M A L, Leite, B, Lenzi, H, Lim, T, Liska, A, Litvinenko, M X, Liu, X, Li, X H, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, Y, Mao, L, Masek, H, Masui, F, Matathias, M C, McCain, M, McCumber, P L, McGaughey, Y, Miake, P, Mikes, K, Miki, T E, Miller, A, Milov, S, Mioduszewski, G C, Mishra, M, Mishra, J T, Mitchell, M, Mitrovski, A, Morreale, D P, Morrison, J M, Moss, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, Y, Nagata, J L, Nagle, M, Naglis, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, B E, Norman, A S, Nyanin, J, Nystrand, E, O'Brien, S X, Oda, C A, Ogilvie, H, Ohnishi, I D, Ojha, H, Okada, K, Okada, M, Oka, O O, Omiwade, A, Oskarsson, I, Otterlund, M, Ouchida, K, Ozawa, R, Pak, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, S, Rembeczki, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, V L, Rykov, S S, Ryu, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, H, Sakata, V, Samsonov, H D, Sato, S, Sato, S, Sawada, J, Seele, R, Seidl, V, Semenov, R, Seto, D, Sharma, T K, Shea, I, Shein, A, Shevel, T-A, Shibata, K, Shigaki, M, Shimomura, T, Shohjoh, K, Shoji, A, Sickles, C L, Silva, D, Silvermyr, C, Silvestre, K S, Sim, C P, Singh, V, Singh, S, Skutnik, M, Slunecka, W C, Smith, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, C, Suire, J P, Sullivan, J, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, T L, Thomas, M, Togawa, A, Toia, J, Tojo, L, Tomásek, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, S K, Tuli, H, Tydesjö, N, Tyurin, C, Vale, H, Valle, H W, van Hecke, J, Velkovska, R, Vertesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, M, Wagner, D, Walker, X R, Wang, Y, Watanabe, J, Wessels, S N, White, N, Willis, D, Winter, C L, Woody, M, Wysocki, W, Xie, Y L, Yamaguchi, A, Yanovich, Z, Yasin, J, Ying, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, S, Zhou, J, Zimányi, and L, Zolin

Abstract

Differential measurements of elliptic flow (v2) for Au+Au and Cu+Cu collisions at sqrt[sNN]=200 GeV are used to test and validate predictions from perfect fluid hydrodynamics for scaling of v2 with eccentricity, system size, and transverse kinetic energy (KE T). For KE T identical with mT-m up to approximately 1 GeV the scaling is compatible with hydrodynamic expansion of a thermalized fluid. For large values of KE T mesons and baryons scale separately. Quark number scaling reveals a universal scaling of v2 for both mesons and baryons over the full KE T range for Au+Au. For Au+Au and Cu+Cu the scaling is more pronounced in terms of KE T, rather than transverse momentum.

Published
2006

49. Nuclear effects on hadron production ind+Aucollisions atsNN=200GeV revealed by comparison withp+pdata

Author

P. J. Kroon, N. Grau, M. Inuzuka, Hideki Hamagaki, G. David, P. W. Stankus, S. Afanasiev, A. Ster, X. He, G. Roche, V. Peresedov, B. D. Fox, Maya Hachiya Shimomura, Y. I. Makdisi, J. M. Burward-Hoy, M. Heffner, Y. J. Kwon, H. Masui, A. Taranenko, D. E. Fields, M. T. Bjorndal, B. V. Jacak, M. J. Tannenbaum, L. Sanfratello, Mate Csanad, O. Dietzsch, A. K. Purwar, B. Khachaturov, Marie Germain, M. Gonin, Sean A. Kelly, T. Matsumoto, A. G. Litvinenko, V. V. Ikonnikov, D. Bucher, K. Ozawa, A. Kozlov, R. Seto, K. Hasuko, Dipanwita Dutta, David D'Enterria, V.N. Penev, Viktor Veszpremi, R. P. Pisani, A. V. Kazantsev, Kensuke Homma, C. H. Kuberg, C. Zhang, J. Chiba, K. Kurita, V. Dzhordzhadze, S. Takagi, Hiroyuki Okada, Joakim Nystrand, V. S. Pantuev, H. Pei, S. Kametani, H. Pereira, Nikolay Tyurin, S. Chernichenko, K. Das, H. Lim, E. P. Hartouni, K. N. Barish, N. N. Ajitanand, M. Rosati, G. C. Mishra, B. Bassalleck, L. Aphecetche, Takeo Kawabata, M. C. McCain, M. Harvey, Pàl Hidas, Takao Sakaguchi, J. H. Kang, M. Velkovsky, Senta Greene, H. J. Kim, J. L. Drachenberg, J. S. Haggerty, Yoichiro Fukao, Viktor Riabov, Takahiro Nakamura, M. Konno, Y. Mao, S. C. Johnson, C. Klein-Boesing, R. S. Towell, Junji Tojo, A. Romana, T. C. Awes, S. F. Pate, T. J. Uam, M. J. Kweon, S. Gadrat, S. P. Sorensen, Jun Kikuchi, S. Batsouli, Akio Kiyomichi, Y. Le Bornec, A. Durum, K. S. Sim, A. D. Frawley, M. A. Volkov, M. L. Brooks, J. T. Mitchell, Charles Maguire, S. Leckey, E. O'Brien, A. A. Vinogradov, Henrik Tydesjö, Josh Moss, Minghui Liu, X. R. Wang, D. S. Brown, K. Okada, S. H. Aronson, C. A. Ogilvie, T. K. Hemmick, V-N. Tram, R. A. Soltz, S. N. White, Jiangyong Jia, E. Kistenev, Yasuo Miake, Y. Goto, W. Holzmann, Vladislav Manko, J. G. Lajoie, Anders Nils Erik Oskarsson, T. Hachiya, Kenneth Francis Read, H. En'yo, P. Constantin, H. Hiejima, M. J. Leitch, Wei Xie, I. Tserruya, L. Kochenda, Motoi Inaba, Yu. Efremenko, M. Grosse Perdekamp, H. Kobayashi, S. Bathe, W. E. Sondheim, A. Pierson, Ingvar Otterlund, I. J. Choi, Hiroaki Ohnishi, V. Papavassiliou, X. Zong, A. P.T. Palounek, Atsushi Taketani, A. Deshpande, K. Imai, C. Y. Chi, R. Kohara, Robert F. Hobbs, Y. Akiba, S. Y. Fung, Y. Tanaka, J. M. Qualls, S. Nagamiya, P. L. McGaughey, S. Esumi, S. Belikov, K. S. Joo, John Hill, K. Oyama, J. G. Boissevain, C. L. Silva, T. K. Shea, Kazuhiro Tanaka, Klaus Johannes Reygers, S. P. Stoll, Masashi Kaneta, W. A. Zajc, M. Chiu, Ajit Kumar Mohanty, S. S.E. Rosendahl, Jan Rak, T. Chujo, K. Katou, X. Camard, G. Bunce, Masayasu Ishihara, S. Sawada, R. Granier de Cassagnac, David Olle Rickard Silvermyr, G. B. Kim, V. Baublis, K. Aoki, Toru Sugitate, L. D. Isenhower, A. Franz, A. Denisov, V. Cianciolo, T. A. Shibata, Sergey Fokin, Susumu Sato, C. Pinkenburg, M. Issah, D. Jouan, M. Muniruzzaman, A. Kiss, B. Espagnon, Xingguo Li, D. Isenhower, Ferenc Deák, N. Kamihara, E. Vznuzdaev, F. Staley, Henner Buesching, C. L. Woody, M. Stepanov, T. Horaguchi, A. Hoover, François Fleuret, Martin Purschke, F. Matathias, German Martinez, R. Armendariz, T. Ichihara, A. Drees, F. K. Wohn, Christine Angela Aidala, Anne Marie Sickles, P. Chand, J. Gosset, J. P. Sullivan, B. M. Johnson, D. Kotchetkov, Evert Anders Stenlund, A. G. Hansen, Matthew G. Reuter, T. E. Miller, R. Santo, Z. Fraenkel, Shingo Sakai, I. D. Ojha, Alexander Malakhov, P. Rosnet, G. R. Young, R. K. Choudhury, Y. Watanabe, S. Yokkaichi, A. Devismes, J. M. Heuser, F. Kajihara, L. S. Zolin, W. J. Park, H. W. Van Hecke, H. Delagrange, P. D. Barnes, A. Yanovich, S. Zhou, I. V. Sourikova, H. Torii, T. L. Thomas, Ryugo S. Hayano, A. Soldatov, D. Mukhopadhyay, Y. Cobigo, Y. Riabov, Kenta Shigaki, J. E. Frantz, A. S. Nyanin, K. Tanida, V. I. Kochetkov, Brian Cole, Herve Borel, A. Glenn, V. L. Rykov, I. Ravinovich, A. Isupov, S. S. Ryu, Ahmed Al-Jamel, Saskia Mioduszewski, Hirohiko Sato, Gerd Joachim Kunde, I. Shein, Yves Roland Schutz, J. Velkovska, D. Pal, E. M. Takagui, Alexander Milov, O. Drapier, Alberto Baldisseri, E. R. Kinney, D. P. Morrison, V. E. Semenov, J. Zimányi, Jen-Chieh Peng, Dong Jo Kim, Osamu Jinnouchi, E. J. Desmond, Jean-Pierre Cussonneau, M. Togawa, J. Park, Florian Bauer, Y. Tsuchimoto, I. E. Yushmanov, Alexei Khanzadeev, N. Bruner, Ch. Finck, Jason Newby, S. Butsyk, Vladimir Samsonov, Tamas Ferenc Csorgo, J. L. Nagle, V. Bumazhnov, M. P. Comets, P. Tarján, W. C. Chang, Roy A. Lacey, S. S. Adler, G. S. Kyle, N. Willis, James Alexander, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Alexandre Lebedev, D. M. Lee, B. Komkov, Hans-Åke Gustafsson, Norio Saito, M. A. L. Leite, V. Babintsev, and E. H. Kim

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Parton, 7. Clean energy, 01 natural sciences, Gluon, Baryon, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider
Abstract

PHENIX has measured the centrality dependence of midrapidity pion, kaon, and proton transverse momentum distributions in d+Au and p+p collisions at root s(NN) = 200 GeV. The p+p data provide a reference for nuclear effects in d+Au and previously measured Au+Au collisions. Hadron production is enhanced in d+Au, relative to independent nucleon-nucleon scattering, as was observed in lower energy collisions. The nuclear modification factor for (anti)protons is larger than that for pions. The difference increases with centrality but is not sufficient to account for the abundance of baryon production observed in central Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). The centrality dependence in d+Au shows that the nuclear modification factor increases gradually with the number of collisions encountered by each participant nucleon. We also present comparisons with lower energy data as well as with parton recombination and other theoretical models of nuclear effects on particle production.

Published
2006

50. Azimuthal Angle Correlations for Rapidity Separated Hadron Pairs ind+AuCollisions atsNN=200 GeV

Author

S. N. White, C. H. Kuberg, J. Chiba, T. E. Miller, S. Batsouli, G. C. Mishra, R. Santo, V-N. Tram, Takao Sakaguchi, Robert F. Hobbs, C. Klein-Boesing, A. D. Frawley, D. Mukhopadhyay, S. Butsyk, S. Afanasiev, A. Ster, Vladimir Samsonov, Y. Cobigo, W. E. Sondheim, M. Chiu, Ajit Kumar Mohanty, Y. J. Mao, S. Kametani, Pàl Hidas, I. Tserruya, Yu. Efremenko, J. H. Kang, J. S. Haggerty, A. Romana, Anders Nils Erik Oskarsson, S. C. Johnson, M. J. Kweon, Motoi Inaba, T. A. Shibata, S. Sawada, A. Franz, Minghui Liu, S. H. Aronson, G. B. Kim, A. P.T. Palounek, D. Isenhower, German Martinez, B. Espagnon, J. E. Frantz, Kenneth Francis Read, Wei Xie, H. Kobayashi, A. Deshpande, S. Bathe, Tamas Ferenc Csorgo, Anne Marie Sickles, Y. Le Bornec, Kensuke Homma, Sean A. Kelly, Mate Csanad, Viktor Veszpremi, J. L. Nagle, Ferenc Deák, N. Kamihara, D. E. Fields, B. V. Jacak, W. Holzmann, Herve Borel, A. Glenn, Y. Akiba, S. Y. Fung, M. Heffner, A. Taranenko, S. Chernichenko, Hirohiko Sato, F. Matathias, R. Armendariz, J. Velkovska, V. S. Pantuev, A. Drees, S. Takagi, Maya Hachiya Shimomura, S. Nagamiya, Kazuhiro Tanaka, A. Devismes, V. L. Rykov, I. Ravinovich, Y. I. Makdisi, F. Kajihara, H. Lim, B. Bassalleck, David D'Enterria, Klaus Johannes Reygers, P. L. McGaughey, A. K. Purwar, S. Esumi, H. Delagrange, M. Harvey, M. Konno, Jen-Chieh Peng, Atsushi Taketani, Y. Tanaka, T. K. Shea, V. Bumazhnov, M. P. Comets, M. J. Tannenbaum, Senta Greene, John Hill, K. Oyama, Toru Sugitate, L. D. Isenhower, R. P. Pisani, Martin Purschke, V. V. Ikonnikov, Nikolay Tyurin, S. Zhou, S. F. Pate, M. A. Volkov, François Fleuret, K. N. Barish, M. Issah, N. Grau, A. Isupov, S. S. Ryu, E. O'Brien, D. Kotchetkov, Ahmed Al-Jamel, Dong Jo Kim, Osamu Jinnouchi, Junji Tojo, N. N. Ajitanand, X. R. Wang, R. A. Soltz, B. Khachaturov, P. Tarján, T. Matsumoto, Y. Watanabe, D. Bucher, A. V. Kazantsev, K. Hasuko, T. Ichihara, W. A. Zajc, V. Baublis, K. Aoki, A. Denisov, V. Cianciolo, E. Vznuzdaev, Sergey Fokin, M. T. Bjorndal, F. K. Wohn, Z. Fraenkel, W. C. Chang, Alexander Milov, K. Okada, M. Grosse Perdekamp, Matthew G. Reuter, Hiroyuki Okada, A. Pierson, V. Papavassiliou, Sébastien Gadrat, C. A. Ogilvie, T. K. Hemmick, Takahiro Nakamura, Roy A. Lacey, H. En'yo, O. Drapier, Joakim Nystrand, I. D. Ojha, Alexander Malakhov, Yasuo Miake, P. Constantin, Charles Maguire, S. Leckey, T. Horaguchi, E. R. Kinney, A. Hoover, P. W. Stankus, D. P. Morrison, R. K. Choudhury, S. Belikov, K. S. Joo, Yoichiro Fukao, J. T. Mitchell, M. J. Leitch, V. E. Semenov, J. Zimányi, T. J. Uam, L. Aphecetche, Vladislav Manko, Takeo Kawabata, M. C. McCain, David Olle Rickard Silvermyr, A. Durum, Josh Moss, L. S. Zolin, A. Soldatov, L. Kochenda, T. Chujo, M. L. Brooks, H. W. Van Hecke, J. M. Burward-Hoy, X. Camard, W. J. Park, E. Kistenev, T. C. Awes, Christine Angela Aidala, P. D. Barnes, A. Yanovich, D. S. Brown, Y. J. Kwon, Jun Kikuchi, J. G. Boissevain, Masashi Kaneta, K. Katou, C. Pinkenburg, A. Kiss, M. Stepanov, G. Roche, C. L. Silva, L. Sanfratello, R. Kohara, J. Gosset, J. P. Sullivan, Henner Buesching, C. L. Woody, Marie Germain, C. Zhang, S. Yokkaichi, J. M. Heuser, K. Ozawa, Masayasu Ishihara, P. Chand, H. Pei, Susumu Sato, S. P. Stoll, B. D. Fox, M. Muniruzzaman, A. G. Litvinenko, P. J. Kroon, Viktor Riabov, F. Staley, H. J. Kim, K. Tanida, S. S.E. Rosendahl, G. Bunce, V. I. Kochetkov, A. Kozlov, M. Rosati, M. Velkovsky, A. A. Vinogradov, Henrik Tydesjö, R. Seto, Jiangyong Jia, Y. Goto, D. Jouan, O. Dietzsch, Gerd Joachim Kunde, Dipanwita Dutta, I. Shein, V. Dzhordzhadze, X. He, M. Inuzuka, Hideki Hamagaki, K. Das, V. Peresedov, E. P. Hartouni, G. David, Alberto Baldisseri, Saskia Mioduszewski, H. Masui, Yves Roland Schutz, D. Pal, E. M. Takagui, R. S. Towell, Akio Kiyomichi, C. Y. Chi, B. M. Johnson, Brian Cole, G. R. Young, Jan Rak, R. Granier de Cassagnac, K. S. Sim, H. Hiejima, K. Imai, J. L. Drachenberg, Ch. Finck, Jason Newby, S. P. Sorensen, Alexei Khanzadeev, N. Bruner, J. G. Lajoie, T. Hachiya, Ingvar Otterlund, I. J. Choi, M. Gonin, V.N. Penev, K. Kurita, H. Pereira, E. J. Desmond, Jean-Pierre Cussonneau, M. Togawa, J. Park, Hiroaki Ohnishi, Florian Bauer, Y. Tsuchimoto, J. M. Qualls, I. E. Yushmanov, Xingguo Li, I. V. Sourikova, H. Torii, T. L. Thomas, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, A. S. Nyanin, Evert Anders Stenlund, A. G. Hansen, Shingo Sakai, E. H. Kim, S. S. Adler, G. S. Kyle, N. Willis, James Alexander, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, Alexandre Lebedev, D. M. Lee, Xiaopeng Zong, B. Komkov, Hans-Åke Gustafsson, Norio Saito, M. A. L. Leite, and V. Babintsev

Subjects
Physics, Quantum chromodynamics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Hadron, General Physics and Astronomy, Parton, Jet (particle physics), 7. Clean energy, 01 natural sciences, Color-glass condensate, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Nucleon
Abstract

Deuteron-gold (d+Au) collisions at the Relativistic Heavy Ion Collider provide ideal platforms for testing QCD theories in dense nuclear matter at high energy. In particular, models suggesting strong saturation effects for partons carrying small nucleon momentum fraction (x) predict modifications to jet production at forward rapidity (deuteron-going direction) in d+Au collisions. We report on two-particle azimuthal angle correlations between charged hadrons at forward/backward (deuteron/gold going direction) rapidity and charged hadrons at midrapidity in d+Au and p+p collisions at root s(NN)=200 GeV. Jet structures observed in the correlations are quantified in terms of the conditional yield and angular width of away-side partners. The kinematic region studied here samples partons in the gold nucleus with x similar to 0.1 to similar to 0.01. Within this range, we find no x dependence of the jet structure in d+Au collisions.

Published
2006

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