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201. Identified charged hadron production inp+pcollisions ats=200and 62.4 GeV

Author: S. Bathe, K. S. Sim, V. Dzhordzhadze, Y. L. Yamaguchi, B. Komkov, Agneta Oskarsson, L. Aphecetche, Y. Kwon, Mate Csanad, Y. Berdnikov, Y. Akiba, Norio Saito, Hiroaki Ohnishi, K. B. Lee, R. Yang, M. A. L. Leite, H. Hiejima, M. Rosati, M. Mishra, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, Alexander Milov, I. Nakagawa, T. Engelmore, K. Imai, M. Ouchida, J. S. Kapustinsky, S. N. White, V. Babintsev, N. Means, Johannes Peter Wessels, J. Asai, V. S. Pantuev, Y. Ikeda, C. M. Camacho, Tae-Yeon Lee, A. A. Vinogradov, D. Roach, K. M. Kijima, Martin Purschke, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, S. Campbell, David D'Enterria, C. Baumann, H. Pei, J. G. Boissevain, E. J. Mannel, S. Afanasiev, A. Ster, Prashant Shukla, S. F. Pate, Masashi Kaneta, Zvi Hirsh Citron, R. A. Soltz, Shingo Sakai, H. Liu, Anne Marie Sickles, K. O. Eyser, A. K. Purwar, K. Fujiwara, Jiangyong Jia, Y. Goto, C. P. Singh, H. Iinuma, A. P.T. Palounek, D. Kotchetkov, K. Nakano, B. M. Johnson, V. E. Semenov, J. Zimányi, J. Newby, K. A. Drees, Maya Hachiya Shimomura, Xingguo Li, M. Naglis, C. L. Silva, H. Al-Bataineh, A. Morreale, W. A. Zajc, K. Shoji, M. I. Nagy, M. Issah, V. Baublis, A. Denisov, Y. Tomita, T. L. Thomas, Junji Tojo, I. Ravinovich, E. H. Kim, Tatsuya Chujo, W. E. Sondheim, D. Ivanischev, Sergey Fokin, M. Gonin, A. Isupov, C. Suire, Z. Fraenkel, I. Tserruya, R. Pak, Yu. Efremenko, C. Pinkenburg, Y. I. Makdisi, N. Kamihara, P. A. Rukoyatkin, P. W. Stankus, Masayasu Ishihara, M. D. Malik, E. Vznuzdaev, M. Grosse Perdekamp, D. E. Fields, H. A. Gustafsson, J. Sziklai, C. Zhang, M. N. Wagner, R. Vértesi, R. K. Choudhury, Y. Nagata, V. Singh, M. Bai, B. V. Jacak, Ryugo S. Hayano, G. R. Young, K. S. Joo, Brian Cole, D. Hornback, Y. Riabov, A. Sukhanov, H. Pereira, M. Stepanov, Susumu Sato, G. Roche, Y. J. Mao, S. Butsyk, S. Kametani, T. Horaguchi, B. Meredith, Y. Morino, P. Ružička, K. Okada, H. Hamagaki, R. S. Towell, A. Hadj Henni, Minghui Liu, Vladimir Samsonov, Viktor Riabov, R. Armendariz, Kenta Shigaki, Y. Fukao, A. Shevel, M. Nguyen, M. McCumber, I. Garishvili, Akio Kiyomichi, F. Wei, Y. Onuki, T. Hester, A. Taranenko, D. Kawall, H. Themann, H. W. Van Hecke, M. J. Tannenbaum, John Hill, J. H. Kang, J. S. Haggerty, V. I. Kochetkov, Beomkyu Kim, K. Boyle, Jan Rak, Ajit Kumar Mohanty, Wei Xie, T. A. Shibata, R. Hobbs, N. Kurihara, B. Sahlmueller, Kazushi Miki, M. Heffner, A. S. Nyanin, Kenneth Francis Read, H. En'yo, M. J. Leitch, Rachid Nouicer, G. S. Kyle, James Alexander, R. Lacey, Toru Sugitate, L. D. Isenhower, Kazuyoshi Kurita, A. Drees, A. Romana, J. Murata, H. Torii, Gerd Joachim Kunde, S. Esumi, D. Sharma, R. Granier de Cassagnac, A. Adare, O. Dietzsch, Steven E. Skutnik, R. Bennett, Brajesh K. Singh, C. Y. Chi, E. T. Atomssa, M. B. Deaton, T. Sato, J. E. Frantz, M. Finger, S. Dairaku, A. V. Kazantsev, K. Das, R. Averbeck, Byung-Sik Hong, H. Valle, C. L. Woody, A. Berdnikov, A. Bazilevsky, Philippe Rosnet, R. Ichimiya, Tamas Ferenc Csorgo, K. Dehmelt, D. Mukhopadhyay, I. Shein, S. Rembeczki, Y. Tanaka, J. Kubart, Dipanwita Dutta, K. Sakashita, O. Zaudtke, V. Cianciolo, H. Qu, S. P. Sorensen, Alexandre Lebedev, Jen-Chieh Peng, Alexei Khanzadeev, Dylan Walker, M. Virius, E. P. Hartouni, V-N. Tram, N. Grau, D. M. Lee, L. Tomášek, François Fleuret, A. Kiss, J. L. Nagle, P. Mikeš, B. Azmoun, K. Sedgwick, Alberto Baldisseri, A. Král, F. Matathias, A. Deshpande, M. J. Kweon, E. Stenlund, H. Sakata, Y. S. Lai, Julia Velkovska, N. N. Ajitanand, Takahiro Nakamura, K. Aoki, K. Kiriluk, G. David, J. Egdemir, Z. Yasin, D. Winter, Motoi Inaba, I. V. Sourikova, Xiong Wang, Saskia Mioduszewski, J. Chiba, Y. Watanabe, Seong H. Kim, T. Ichihara, M. Oka, A. Yu. Semenov, Dong Jo Kim, J. G. Lajoie, T. Hachiya, D. Yu Peressounko, Susumu Oda, Jason Kamin, Osamu Jinnouchi, Henner Buesching, S. P. Stoll, A. Glenn, S. Gadrat, C. Silvestre, Kensuke Homma, T. C. Awes, A. Dion, Kyoichiro Ozawa, T. Liška, I. Younus, Takao Sakaguchi, Matthew G. Reuter, Takahiro Fusayasu, J. Gosset, A. Durum, A. Veicht, C. Klein-Boesing, F. Staley, L. Baksay, Eva Haslum, B. Lenzi, P. Tarján, T. V. Moukhanova, C. R. Cleven, C. Haegemann, Y. Inoue, S. S.E. Rosendahl, G. Bunce, Alexander Malakhov, Herve Borel, D. Lynch, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Charles Maguire, Jun Kikuchi, Tadaaki Isobe, I. J. Choi, A. Soldatov, Atsushi Taketani, A. Enokizono, P. Liebing, A. Kravitz, J. Jin, E. M. Takagui, A. D. Frawley, T. Tabaru, Marcus Hohlmann, Andry Malala Rakotozafindrabe, D. Silvermyr, K. Yamaura, D. Isenhower, A. Toia, A. Churyn, E. J. Desmond, V. L. Rykov, T. Dahms, R. Tanabe, D. Layton, S. Huang, S. H. Aronson, P. L. McGaughey, M. Togawa, L. S. Zolin, W. J. Park, J. Park, S. Yokkaichi, T. Kempel, Dong-Hun Kim, Kiyoshi Tanida, E. Kistenev, P. D. Barnes, A. Yanovich, L. Mašek, D. Jouan, W. Holzmann, M. K. Lee, P. Constantin, S. Chernichenko, Y. Tsuchimoto, W. C. Chang, M. Chiu, H. Harada, I. E. Yushmanov, Rushan Han, C. A. Ogilvie, Senta Greene, T. K. Hemmick, B. Bassalleck, Yasuo Miake, A. T. Basye, B. E. Norman, T. Niita, B. Fadem, E. O'Brien, M. Konno, L. Kochenda, H. Kanou, Taku Gunji, H. Gong, J. T. Mitchell, J. Seele, F. Kajihara, R. Seidl, Vladislav Manko, M. Slunečka, H. Delagrange, S. Belikov, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, Y. Nakamiya, S. Zhou, G. Baksay, S. D. Rolnick, J. L. Charvet, T. E. Miller, M. Kurosawa, P. Chung, J. Imrek, W. S. Emam, V. Papavassiliou, Debashish Pal, S. Sawada, J. Ying, A. Franz, M. Mitrovski, M. Wysocki, S. Takagi, K. N. Barish, M. L. Brooks, B. Love, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, X. He, O. O. Omiwade, V. Peresedov, J. Koster, S. Batsouli, H. Masui, A. K. Dubey, and A. A. Bickley
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, 7. Clean energy, 01 natural sciences, Nuclear physics, Baryon, Pion, Antimatter, 0103 physical sciences, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Nucleon
Abstract: Transverse momentum distributions and yields for pi(+/-), K-+/-, p, and (p) over bar in p + p collisions at root s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter T-inv, mean transverse momentum , and yield per unit rapidity dN/dy at each energy, and compare them to other measurements at different root s in p + p and p + (p) over bar collisions. We also present the scaling properties such as m(T) scaling and x(T) scaling on the p(T) spectra between different energies. To discuss the mechanism of the particle production in p + p collisions, the measured spectra are compared to next-to-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations.
Published: 2011

202. Suppression of back-to-back hadron pairs at forward rapidity in d+Au collisions at √s(NN)=200 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, A, Angerami, K, Aoki, N, Apadula, Y, Aramaki, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, G, Baksay, L, Baksay, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, S, Belikov, R, Belmont, R, Bennett, A, Berdnikov, Y, Berdnikov, J H, Bhom, D S, Blau, J S, Bok, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, S, Campbell, A, Caringi, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, J B, Choi, R K, Choudhury, P, Christiansen, T, Chujo, P, Chung, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, Z, Conesa del Valle, M, Connors, M, Csanád, T, Csörgo, T, Dahms, S, Dairaku, I, Danchev, K, Das, A, Datta, G, David, M K, Dayananda, A, Denisov, A, Deshpande, E J, Desmond, K V, Dharmawardane, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, D, Dutta, L, D'Orazio, S, Edwards, Y V, Efremenko, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, H, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, G, Grim, M, Grosse Perdekamp, T, Gunji, H-Å, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, R, Han, J, Hanks, E, Haslum, R, Hayano, X, He, M, Heffner, T K, Hemmick, T, Hester, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, Y, Ikeda, K, Imai, M, Inaba, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, D, Ivanischev, Y, Iwanaga, B V, Jacak, J, Jia, X, Jiang, J, Jin, B M, Johnson, T, Jones, K S, Joo, D, Jouan, D S, Jumper, F, Kajihara, J, Kamin, J H, Kang, J, Kapustinsky, K, Karatsu, M, Kasai, D, Kawall, M, Kawashima, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, J, Kikuchi, A, Kim, B I, Kim, D J, Kim, E J, Kim, Y-J, Kim, E, Kinney, Á, Kiss, E, Kistenev, L, Kochenda, B, Komkov, M, Konno, J, Koster, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K B, Lee, K S, Lee, M J, Leitch, M A L, Leite, X, Li, P, Lichtenwalner, P, Liebing, L A, Linden Levy, T, Liška, A, Litvinenko, H, Liu, M X, Liu, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, T, Mibe, A C, Mignerey, K, Miki, A, Milov, J T, Mitchell, A K, Mohanty, H J, Moon, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, T, Murakami, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, K R, Nakamura, T, Nakamura, K, Nakano, S, Nam, J, Newby, M, Nguyen, M, Nihashi, R, Nouicer, A S, Nyanin, C, Oakley, E, O'Brien, S X, Oda, C A, Ogilvie, M, Oka, K, Okada, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, I H, Park, S K, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, R, Petti, C, Pinkenburg, R P, Pisani, M, Proissl, M L, Purschke, H, Qu, J, Rak, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, C A, Rosen, S S E, Rosendahl, P, Rukoyatkin, P, Ružička, B, Sahlmueller, N, Saito, T, Sakaguchi, K, Sakashita, V, Samsonov, S, Sano, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunečka, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, S, Taneja, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, H, Themann, D, Thomas, T L, Thomas, M, Togawa, A, Toia, L, Tomášek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, M, Virius, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, C L, Woody, R M, Wright, M, Wysocki, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, Z, You, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, S, Zhou, and L, Zolin
Abstract: Back-to-back hadron pair yields in d+Au and p+p collisions at √s(NN)=200 GeV were measured with the PHENIX detector at the Relativistic Heavy Ion Collider. Rapidity separated hadron pairs were detected with the trigger hadron at pseudorapidity |η|0.35 and the associated hadron at forward rapidity (deuteron direction, 3.0η3.8). Pairs were also detected with both hadrons measured at forward rapidity; in this case, the yield of back-to-back hadron pairs in d+Au collisions with small impact parameters is observed to be suppressed by a factor of 10 relative to p+p collisions. The kinematics of these pairs is expected to probe partons in the Au nucleus with a low fraction x of the nucleon momenta, where the gluon densities rise sharply. The observed suppression as a function of nuclear thickness, p(T), and η points to cold nuclear matter effects arising at high parton densities.
Published: 2011

203. Measurements of higher order flow harmonics in Au+Au collisions at √s(NN)=200 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, K, Aoki, Y, Aramaki, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, G, Baksay, L, Baksay, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, S, Belikov, R, Belmont, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J S, Bok, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, P, Christiansen, T, Chujo, P, Chung, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, M, Connors, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, S, Dairaku, I, Danchev, K, Das, A, Datta, G, David, A, Denisov, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, D, Dutta, S, Edwards, Y V, Efremenko, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, H, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-Å, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, R, Han, J, Hanks, E P, Hartouni, E, Haslum, R, Hayano, X, He, M, Heffner, T K, Hemmick, T, Hester, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, J, Ide, Y, Ikeda, K, Imai, M, Inaba, D, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, D, Ivanischev, B V, Jacak, J, Jia, J, Jin, B M, Johnson, K S, Joo, D, Jouan, D S, Jumper, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, J H, Kang, J, Kapustinsky, K, Karatsu, D, Kawall, M, Kawashima, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, B I, Kim, D H, Kim, D J, Kim, E, Kim, E J, Kim, S H, Kim, Y J, Kim, E, Kinney, K, Kiriluk, Á, Kiss, E, Kistenev, L, Kochenda, B, Komkov, M, Konno, J, Koster, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K, Lee, K B, Lee, K S, Lee, M J, Leitch, M A L, Leite, E, Leitner, B, Lenzi, X, Li, P, Liebing, L A, Linden Levy, T, Liška, A, Litvinenko, H, Liu, M X, Liu, B, Love, R, Luechtenborg, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, A C, Mignerey, P, Mikeš, K, Miki, A, Milov, M, Mishra, J T, Mitchell, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, R, Nouicer, A S, Nyanin, E, O'Brien, S X, Oda, C A, Ogilvie, M, Oka, K, Okada, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, I H, Park, J, Park, S K, 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, Proissl, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, C A, Rosen, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, P, Ružička, B, Sahlmueller, N, Saito, T, Sakaguchi, K, Sakashita, V, Samsonov, S, Sano, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunečka, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, N A, Sparks, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, M, Togawa, A, Toia, L, Tomášek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, J P, Wood, C L, Woody, R M, Wright, M, Wysocki, W, Xie, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, Z, You, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, and L, Zolin
Abstract: Flow coefficients ν(n) for n=2, 3, 4, characterizing the anisotropic collective flow in Au+Au collisions at √s(NN)=200 GeV, are measured relative to event planes Ψ(n), determined at large rapidity. We report ν(n) as a function of transverse momentum and collision centrality, and study the correlations among the event planes of different order n. The ν(n) are well described by hydrodynamic models which employ a Glauber Monte Carlo initial state geometry with fluctuations, providing additional constraining power on the interplay between initial conditions and the effects of viscosity as the system evolves. This new constraint can serve to improve the precision of the extracted shear viscosity to entropy density ratio η/s.
Published: 2011

204. Measurement of neutral mesons inp+pcollisions ats=200 GeVand scaling properties of hadron production

Author: X. He, O. O. Omiwade, L. Aphecetche, K. Sakashita, P. Tarján, V. Peresedov, C. L. Woody, A. Berdnikov, J. Egdemir, Jason Kamin, T. Csörgő, S. P. Stoll, W. A. Zajc, J. Koster, V. S. Pantuev, Senta Greene, V. Baublis, A. Denisov, S. S.E. Rosendahl, Johannes Peter Wessels, V. Cianciolo, Y. Tomita, G. Bunce, A. T. Basye, Maya Hachiya Shimomura, M. Rosati, B. Meredith, Sergey Fokin, I. V. Sourikova, E. H. Kim, B. E. Norman, B. Fadem, E. O'Brien, J. T. Mitchell, A. Churyn, A. V. Kazantsev, S. Batsouli, H. Masui, A. K. Dubey, C. Baumann, Junji Tojo, Anne Marie Sickles, C. P. Singh, D. Jouan, B. M. Johnson, A. Isupov, Y. I. Makdisi, M. B. Deaton, J. Sziklai, Brian Cole, John Hill, R. Seidl, A. A. Bickley, R. A. Soltz, K. Okada, Toru Sugitate, L. D. Isenhower, A. Hadj Henni, M. Grosse Perdekamp, B. Sahlmueller, Y. Tanaka, H. En'yo, G. R. Young, S. Takagi, Vladislav Manko, M. J. Leitch, M. J. Tannenbaum, Beomkyu Kim, K. Boyle, Wei Xie, H. A. Gustafsson, M. Ouchida, M. Slunečka, Mate Csanad, N. Means, J. Asai, K. N. Barish, C. A. Ogilvie, G. S. Kyle, H. Torii, François Fleuret, I. Tserruya, C. Zhang, T. K. Hemmick, James Alexander, Yu. Efremenko, M. Mitrovski, P. Ružička, D. Winter, Yasuo Miake, D. Mukhopadhyay, S. Rembeczki, R. Averbeck, Byung-Sik Hong, K. S. Sim, A. Bazilevsky, T. Ichihara, S. Belikov, L. Tomášek, D. Yu Peressounko, P. Mikeš, A. A. Vinogradov, Viktor Riabov, V. Dzhordzhadze, Y. Kwon, Matthew G. Reuter, Philippe Rosnet, Hiroaki Ohnishi, K. B. Lee, Takahiro Fusayasu, Shingo Sakai, K. A. Drees, T. L. Thomas, F. Staley, L. Baksay, V. Singh, S. Bathe, H. Pei, Alexander Malakhov, L. Kochenda, R. Yang, M. Wysocki, H. Hiejima, M. L. Brooks, H. Iinuma, J. Chiba, Ryugo S. Hayano, Y. Riabov, I. Ravinovich, Takao Sakaguchi, B. Azmoun, A. Král, M. J. Kweon, Agneta Oskarsson, M. K. Lee, Alexandre Lebedev, D. M. Lee, K. Kiriluk, Y. L. Yamaguchi, B. Komkov, Y. Berdnikov, Jiangyong Jia, Y. Goto, B. Love, Robert F. Hobbs, Y. Akiba, C. Klein-Boesing, M. I. Nagy, A. P.T. Palounek, R. Pak, N. Kamihara, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, M. Issah, Kenta Shigaki, M. Nguyen, M. Mishra, S. Nagamiya, A. D. Frawley, T. Tabaru, K. Imai, Norio Saito, M. D. Malik, E. Vznuzdaev, R. Armendariz, M. A. L. Leite, F. Matathias, K. Das, E. P. Hartouni, David D'Enterria, Vaclav Vrba, Klaus Johannes Reygers, A. G. Litvinenko, S. Huang, Kensuke Homma, R. Vértesi, A. S. Nyanin, S. H. Aronson, Kazuyoshi Kurita, T. C. Awes, Kyoichiro Ozawa, T. Liška, Y. Onuki, K. O. Eyser, A. K. Purwar, K. Fujiwara, J. S. Kapustinsky, P. Constantin, S. Chernichenko, D. Roach, Y. Nagata, A. Drees, W. Holzmann, K. M. Kijima, C. R. Cleven, M. Oka, V. Babintsev, Jun Kikuchi, Jan Rak, Rachid Nouicer, B. Bassalleck, C. Haegemann, Y. Inoue, A. Dion, A. Kozlov, J. Kubart, R. Lacey, Ajit Kumar Mohanty, M. Bai, Debashish Pal, M. Konno, R. Seto, K. Haruna, S. Sawada, R. Granier de Cassagnac, T. A. Shibata, A. Adare, T. Sato, J. E. Frantz, Atsushi Taketani, A. Enokizono, Y. Nakamiya, P. Liebing, M. N. Wagner, Y. Fukao, J. Ying, A. Franz, H. W. Van Hecke, A. Shevel, Charles Maguire, Xingguo Li, Alexei Khanzadeev, Tae-Yeon Lee, G. Baksay, K. Dehmelt, E. Stenlund, Martin Purschke, H. Sakata, T. Hester, Kiyoshi Tanida, A. Kiss, O. Dietzsch, Jen-Chieh Peng, E. Kistenev, Z. Yasin, Henner Buesching, E. T. Atomssa, H. Valle, S. P. Sorensen, Dylan Walker, Dipanwita Dutta, D. Isenhower, T. V. Moukhanova, C. M. Camacho, D. Kotchetkov, Marcus Hohlmann, Prashant Shukla, A. Toia, E. J. Desmond, H. Harada, A. Morreale, Julia Velkovska, V-N. Tram, N. Grau, S. F. Pate, Minghui Liu, L. Mašek, Seong H. Kim, D. E. Fields, M. Togawa, J. Park, T. Kempel, Dong-Hun Kim, Xiong Wang, B. V. Jacak, Z. Fraenkel, Motoi Inaba, M. Heffner, J. G. Lajoie, Y. Tsuchimoto, T. Hachiya, R. Bennett, T. Niita, Dong Jo Kim, Osamu Jinnouchi, Kenneth Francis Read, I. E. Yushmanov, H. Al-Bataineh, I. J. Choi, A. Kravitz, M. McCumber, R. K. Choudhury, Tadaaki Isobe, M. Gonin, K. S. Joo, J. L. Charvet, V. Papavassiliou, M. Finger, Sébastien Gadrat, A. Veicht, P. L. McGaughey, A. Sukhanov, H. Pereira, M. Chiu, Y. Morino, T. E. Miller, M. Kurosawa, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, T. Engelmore, O. Drapier, Frank Ellinghaus, S. Esumi, N. N. Ajitanand, E. R. Kinney, Herve Borel, D. P. Morrison, S. Campbell, D. Lynch, D. Sharma, V. E. Semenov, J. Zimányi, R. Ichimiya, Tatsuya Chujo, P. Chung, Eva Haslum, B. Lenzi, Steven E. Skutnik, J. Imrek, V. L. Rykov, T. Dahms, Takahiro Nakamura, S. Dairaku, W. S. Emam, S. Afanasiev, O. Zaudtke, Susumu Oda, A. Ster, H. Kanou, Taku Gunji, H. Gong, J. Seele, M. Virius, F. Kajihara, J. Newby, H. Delagrange, A. Durum, K. Yamaura, S. Zhou, A. Glenn, S. D. Rolnick, D. Hornback, H. Qu, A. Taranenko, Kazushi Miki, Hideki Hamagaki, K. Aoki, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, G. David, Brajesh K. Singh, H. Liu, S. N. White, K. Shoji, Zvi Hirsh Citron, K. Nakano, P. W. Stankus, W. E. Sondheim, D. Ivanischev, Saskia Mioduszewski, P. A. Rukoyatkin, J. Jin, E. M. Takagui, R. S. Towell, I. Garishvili, Akio Kiyomichi, F. Wei, N. Kurihara, C. Y. Chi, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Masashi Kaneta, C. Pinkenburg, M. Stepanov, G. Roche, Y. J. Mao, S. Kametani, T. Horaguchi, J. H. Kang, J. S. Haggerty, A. Romana, Y. S. Lai, A. Yu. Semenov, J. Gosset, S. Butsyk, Vladimir Samsonov, S. Yokkaichi, J. L. Nagle, C. Silvestre, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, R. Tanabe, D. Layton, W. C. Chang, Rushan Han, D. Kawall, H. Themann, V. I. Kochetkov, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, Alberto Baldisseri, M. Naglis, C. L. Silva, Masayasu Ishihara, Susumu Sato, A. Deshpande, Y. Watanabe, I. Younus, and A. Soldatov
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Omega baryon, 01 natural sciences, 7. Clean energy, Omega, Nuclear physics, Baryon, Particle decay, 0103 physical sciences, Tsallis distribution, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K-S(0), omega, eta', and phi mesons in p + p collisions at root s 200 GeV. Measurements of omega and phi production in different decay channels give consistent results. New results for the omega are in agreement with previously published data and extend the measured p(T) coverage. The spectral shapes of all hadron transverse momentum distributions measured by PHENIX are well described by a Tsallis distribution functional form with only two parameters, n and T, determining the high-p(T) and characterizing the low-p(T) regions of the spectra, respectively. The values of these parameters are very similar for all analyzed meson spectra, but with a lower parameter T extracted for protons. The integrated invariant cross sections calculated from the fitted distributions are found to be consistent with existing measurements and with statistical model predictions.
Published: 2011

205. 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

206. Cross Section and Parity-Violating Spin Asymmetries ofW±Boson Production in Polarizedp+pCollisions ats=500 GeV

Author: M. Kasai, A. Deshpande, B. Meredith, Alice Mignerey, John Hill, Toru Sugitate, L. D'Orazio, M. Sarsour, Mate Csanad, François Fleuret, D. Watanabe, A. Iordanova, T. Ichihara, Takahiro Fusayasu, Alexander Malakhov, D. Silvermyr, L. S. Zolin, A. Yanovich, Takao Sakaguchi, M. Mendoza, S. N. White, E. Vznuzdaev, Y. J. Kwon, Deepa Thomas, Marisilvia Donadelli, V. Bumazhnov, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, D. Kotov, Dmitry Blau, E. J. Desmond, M. Ouchida, N. Means, A. D. Frawley, M. Nihashi, Alexander Milov, I. Nakagawa, Atsushi Takahara, Aaron Angerami, Hongfang Liu, R. Tanabe, Young-Ki Kim, T. Engelmore, T. Murakami, D. E. Fields, B. Love, J. S. Kang, K. A. Drees, S. Huang, Y. L. Yamaguchi, Y. Watanabe, Jason Kamin, M. Togawa, E. Vazquez-Zambrano, W. A. Zajc, M. Rosati, K. B. Lee, B. V. Jacak, R. S. Towell, I. Ravinovich, Y. Ikeda, V. Baublis, I. Younus, S. P. Stoll, A. Denisov, C. Harper, E. J. Mannel, E. R. Kinney, V. Cianciolo, T. Kempel, D. P. Morrison, A. G. Litvinenko, W. Holzmann, S. Kaneti, H. Pei, S. Campbell, S. Sawada, Y. Miyachi, Y. Tsuchimoto, Sergey Fokin, Y. Iwanaga, B. H. Kang, I. Garishvili, T. Csörgő, F. Wei, R. P. Pisani, M. Bai, V. S. Pantuev, J. Ying, A. Franz, S. S.E. Rosendahl, G. Bunce, Rushan Han, A. Dion, M. I. Nagy, Maya Hachiya Shimomura, R. S. Hollis, I. E. Yushmanov, M. Kurosawa, H. W. Van Hecke, A. Enokizono, H. Al-Ta'Ani, Tatsuya Chujo, B. Azmoun, A. Král, Jiangyong Jia, Y. Goto, Y. I. Makdisi, R. Akimoto, Johannes Peter Wessels, E. C. Aschenauer, M. McCumber, I. Tserruya, J. Hamblen, Vladimir Samsonov, M. Naglis, R. Seto, Senta Greene, D. Roach, D. Jouan, C. L. Woody, A. Berdnikov, Yu. Efremenko, Prashant Shukla, K. V. Dharmawardane, P. L. McGaughey, K. M. Kijima, H. Qu, V. Singh, M. Gonin, C. Pinkenburg, A. T. Basye, A. Kiss, S. F. Pate, A. Caringi, C. Y. Chi, Hideki Hamagaki, K. Aoki, G. David, Ke. Nakamura, K. S. Sim, B. Fadem, E. O'Brien, M. Chiu, K. Hashimoto, A. Datta, D. Kleinjan, Eric Appelt, M. J. Tannenbaum, K. R. Andrews, R. A. Soltz, K. Okada, Beomkyu Kim, O. Drapier, B. Sahlmueller, Y. Fukao, Henner Buesching, H. Iinuma, C. A. Ogilvie, Xingguo Li, Zhiying You, R. Yang, R. Bennett, R. Armendariz, Kisung Lee, T. K. Hemmick, Ajit Kumar Mohanty, Y. J. Mao, H. Torii, M. Grosse Perdekamp, H. En'yo, Masayasu Ishihara, J. Hanks, K. N. Barish, Sung Keun Park, M. J. Leitch, T. Hester, J. M. Durham, M. E. Connors, Yasuo Miake, K. Watanabe, Yosuke Watanabe, T. A. Shibata, C. L. Silva, S. P. Sorensen, S. Taneja, K. Shoji, T. Sato, A. V. Kazantsev, E. Tennant, L. Guo, J. L. Nagle, P. Castera, Alexei Khanzadeev, M. Finger, S. Dairaku, N. N. Ajitanand, X. Gong, L. Kochenda, M. Issah, A. Glenn, I. V. Sourikova, K. Imai, E. Stenlund, S. Sano, J. H. Kang, J. S. Haggerty, S. R. Lee, J. B. Choi, O. Chvala, I. J. Choi, P. W. Stankus, L. A. Linden Levy, D. Kawall, Eunja Kim, M. Savastio, L. Tomášek, S. Motschwiller, H. A. Gustafsson, D. Isenhower, Jan Rak, R. Lacey, Takahiro Nakamura, V. Papavassiliou, K. Utsunomiya, Jen-Chieh Peng, R. Pak, J. G. Lajoie, T. Jones, Ryugo S. Hayano, R. Granier de Cassagnac, Peter Christiansen, H. Themann, M. L. Brooks, Y. Riabov, A. Adare, D. McGlinchey, Agneta Oskarsson, D. Winter, J. E. Frantz, X. He, Kenta Shigaki, M. Virius, Charles Maguire, D. Yu Peressounko, Y. Berdnikov, Y. Akiba, C. McKinney, M. Nguyen, Inkyu Park, Y. Aramaki, V. Peresedov, N. Grau, Xiong Wang, Robert Vertesi, E. M. Takagui, Byoungchoo Park, Kazuyoshi Kurita, Taku Gunji, Z. Conesa del Valle, T. V. Moukhanova, O. Dietzsch, J. Murata, C. Baumann, K. Karatsu, A. Durum, J. Ben-Benjamin, D. Hornback, S. Nagamiya, Viktor Riabov, Gerd Joachim Kunde, Dong Jo Kim, J. Koster, C. Oakley, T. C. Awes, Kyoichiro Ozawa, A. Drees, J. S. Bok, Y. Hori, Anne Marie Sickles, C. P. Singh, A. S. Nyanin, Catherine Micaela Silvestre, Vaclav Vrba, Klaus Johannes Reygers, Y. S. Lai, Rui Wei, B. M. Johnson, Motoi Inaba, H. Masui, S. H. Lee, S. Butsyk, I. Shein, R. J. Petti, A. Veicht, R. M. Wright, K. Sedgwick, A. Isupov, Rachid Nouicer, Kiyoshi Tanida, S. Zhou, M. Oka, A. N. Zelenski, M. Proissl, C. H. Chen, G. R. Young, A. Sukhanov, J. Sziklai, H. Pereira, Minghui Liu, S. D. Rolnick, A. Manion, E. Kistenev, J. S. Yoo, Brian Cole, M. K. Dayananda, Julia Velkovska, Y. Morino, Kenneth Francis Read, M. Wysocki, P. Kline, B. Bannier, P. Lichtenwalner, T. Sodre, Jongmin Lee, J. Sun, S. Yokkaichi, Atsushi Taketani, Y. Tanaka, D. Lynch, Martin Purschke, H. J. Moon, D. Broxmeyer, A. Morreale, R. K. Choudhury, K. S. Joo, N. Apadula, A. Vossen, S. Esumi, D. Sharma, J. T. Mitchell, R. Ichimiya, R. Seidl, Vladislav Manko, M. Slunečka, C. Vale, S. Afanasiev, Christine Angela Aidala, S. Bathe, Kensuke Homma, E. Richardson, J. Newby, G. Roche, K. I. Hahn, B. Bassalleck, M. Konno, Y. Nakamiya, Y. J. Kim, A. Taranenko, Kazushi Miki, T. Horaguchi, Brajesh K. Singh, S. Tarafdar, Eva Haslum, B. Komkov, Norio Saito, Tsutomu Mibe, M. A. L. Leite, H. H. Shim, S. H. Lim, R. Belmont, J. S. Kapustinsky, V. Babintsev, X. Jiang, M. Tomášek, G. S. Kyle, James Alexander, Byung-Sik Hong, A. Bazilevsky, Alexandre Lebedev, and D. M. Lee
Subjects: Quark, Physics, Particle physics, Antiparticle, 010308 nuclear & particles physics, General Physics and Astronomy, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Fermion, 01 natural sciences, 7. Clean energy, Nuclear physics, Positron, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Boson, Lepton
Abstract: Large parity-violating longitudinal single-spin asymmetries A(L)(e+) = 0.86(-0.14)(+0.30) and Ae(L)(e-) = 0.88(-0.71)(+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p + p collisions at a center-of-mass energy of root s = 500 GeV with the PHENIX detector at RHIC. These e(+/-) come mainly from the decay of W-+/- and Z(0) bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W-+/- to the light quarks. The observed electron and positron yields were used to estimate W-+/- boson production cross sections for the e(+/-) channels of sigma(pp -> W+X) X BR(W+ -> e(+) nu(e)) = 144.1 +/- 21.2(stat)(-10.3)(+3.4)(syst) +/- 21.6(norm) pb, and sigma(pp -> W-X) X BR(W- -> e(-) (nu) over bar (e)) = 3.17 +/- 12.1(stat)(-8.2)(+10.1)(syst) +/- 4.8(norm) pb.
Published: 2011

207. Relative dielectron yields in p + p and p + d interactions from Ebeam = 1.0–4.9 GeV

Author: Jeffrey Boone Miller, A. Yegneswaran, A. Lettessier-Selvon, G. Roche, Franck Manso, R.J. Porter, T.J. Hallman, Z.F. Wang, L. Heilbronn, J. B. Carroll, Peter A. Seidl, P. N. Kirk, Robert C. Welsh, David Miller, J. Cailiu, C. Naudet, G. Igo, L. S. Schroeder, L. Madansky, W. G. Gong, M. Toy, H. Z. Huang, H. S. Matis, G. Krebs, W.K. Wilson, M. Bougteb, and S. Beedoe
Subjects: Physics, Nuclear and High Energy Physics, Electron pair, Astrophysics::High Energy Astrophysical Phenomena, Kinetic energy, lcsh:QC1-999, Mass spectrum, Incident energy, Invariant mass, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Beam energy, lcsh:Physics
Abstract: The beam energy and invariant mass dependence of the dielectron yield in p + d interactions relative to the yield in p + p interactions is presented for incident kinetic energies from 1.0–4.9 GeV. The ratio of the yield in p + d interactions to that in p + p interactions decreases from 10.5±1.6 at 1.0 GeV to 1.96±0.08 at 4.9 GeV for electron pairs with invariant masses ⩾ 0.15 GeV/ c 2 . The large ratio at 1.0 GeV suggests that dielectron production in the p + d system is dominated by a p + n process. The beam energy dependence of the ratio indicates that this p + n contribution decreases with respect to the other dielectron sources as the incident energy is increased.
Published: 1993

208. The Addition of Lipids Increases the Total Parenteral Nutrition-Associated Cholestasis in the Rat

Author: C. Le Coultre, G. La Scala, P. Bugmann, B. G. Roche, and Dominique Charles Belli
Subjects: Male, medicine.medical_specialty, Liver Function Tests, Internal medicine, medicine, Animals, Aspartate Aminotransferases, Amino Acids, Rats, Wistar, Triglycerides, Gynecology, Cholestasis, business.industry, Organ Size, gamma-Glutamyltransferase, Lipids, Rats, Glucose, Endocrinology, Liver, Total Parenteral Nutrition Associated Cholestasis, Pediatrics, Perinatology and Child Health, Parenteral Nutrition, Total, Surgery, Energy Intake, business
Abstract: Cholestasis is one of the most frequent complications of Total Parenteral Nutrition (TPN). Among the components of TPN, amino acids (AA) and dextrose are considered responsible in terms of quantity. The aim of this study was to determine whether IV lipids have a protective effect on the liver lesions induced by TPN, as well as on the bile flow in rats. Two groups of 6 animals, 6 receiving TPN containing AA and dextrose (Group A-D) and 6 receiving AA, dextrose and lipids (Group A-D-L) were studied. Both groups received the same amount of AA (3.4 g/day) and the same amount of energy (50 kcal/day). The TPN lasted 3 days, after which blood samples were obtained for liver function tests and the bile flow was determined gravimetrically, subsequently the liver was removed for histological analysis. A significant weight loss (p0.01) was observed in both groups (Group A-D: -13 +/- 4 g; Group A-D-L: -16 +/- 2g). The bile flow was significantly lowered in A-D-L at 10.14 +/- 1.27 microliters/minute when compared to Group A-D (15.61 +/- 1.31 microliters/minute). The Aspartate Amino Transferase (AST) plasma level was elevated at 188 +/- 20 UI in Group A-D and at 185 +/- 33 UI in Group A-D-L. Gamma-Glutamyl-Transferase (gamma-GT) plasma level was in the normal range in both groups. In conclusion, this study indicates that TPN-associated cholestasis is significantly increased by lipid addition. However, the hepatocellular necrosis seems unchanged.
Published: 1993

209. Measurement of dielectron production in niobium-niobium collisions at 1.05 GeV/nucleon

Author: Robert C. Welsh, G. F. Krebs, P. N. Kirk, G. Igo, A. Yegneswaran, P. Force, A. Letessier-Selvon, J. Gordon, L. Madansky, J. B. Carroll, Z. F. Wang, C. Naudet, S. Beedoe, H. S. Matis, G. Roche, L. S. Schroeder, Peter A. Seidl, D. H. Miller, and T. J. Hallman
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Niobium, chemistry.chemical_element, Kinetic energy, Nuclear physics, Pair production, chemistry, High Energy Physics::Experiment, Production (computer science), Invariant mass, Nuclear Experiment, Nucleon, Lepton
Abstract: A dielectron signal for pair masses greater than ${\mathit{M}}_{\mathrm{\ensuremath{\pi}}}$ is observed in Nb+Nb collisions at 1.05 GeV/nucleon beam kinetic energy. The invariant mass spectrum and the associated multiplicity distribution are presented. Comparisons are made with previous cross section measurements in p+Be and Ca+Ca.
Published: 1993

210. Measurement of transverse single-spin asymmetries forJ/ψproduction in polarizedp+pcollisions ats=200 GeV

Author: T. Ichihara, Jongmin Lee, Ryugo S. Hayano, A. Hadj Henni, Y. Riabov, Kenta Shigaki, Mate Csanad, M. Nguyen, Beomkyu Kim, K. Boyle, D. Lynch, Taku Gunji, H. Gong, J. Seele, F. Kajihara, I. Tserruya, Alice Mignerey, Y. Ikeda, A. S. Nyanin, L. D'Orazio, S. Esumi, Aaron Angerami, Wei Xie, M. Nihashi, Rachid Nouicer, K. A. Drees, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, David D'Enterria, Y. Tomita, D. S. Jumper, S. Butsyk, J. G. Boissevain, E. J. Mannel, M. Naglis, S. Afanasiev, Takahiro Fusayasu, V. L. Rykov, T. Dahms, O. Dietzsch, M. Proissl, Vladimir Samsonov, K. V. Dharmawardane, Sergey Fokin, Yu. Efremenko, V. Singh, H. Iinuma, S. Zhou, A. P.T. Palounek, Takao Sakaguchi, C. Klein-Boesing, E. T. Atomssa, H. Valle, Alexander Malakhov, A. Baldisseri, S. D. Rolnick, R. Pak, K. Karatsu, C. Pinkenburg, S. Dairaku, A. D. Frawley, R. P. Pisani, Masayasu Ishihara, A. Ster, Anne Marie Sickles, J. Newby, C. L. Woody, A. Berdnikov, V. S. Pantuev, F. Matathias, Kensuke Homma, D. Silvermyr, E. H. Kim, X. Jiang, O. Zaudtke, J. L. Charvet, S. P. Sorensen, Dipanwita Dutta, M. Issah, T. Kempel, Dong-Hun Kim, H. A. Gustafsson, Tadaaki Isobe, R. A. Soltz, H. Borel, N. Kamihara, K. S. Joo, E. Richardson, M. Virius, C. Zhang, Viktor Riabov, S. Huang, A. Caringi, Julia Velkovska, O. Chvala, S. Bathe, M. Grosse Perdekamp, P. Constantin, S. Chernichenko, W. Holzmann, F. Staley, L. S. Zolin, M. Stepanov, G. Roche, Y. J. Mao, D. Hornback, K. I. Hahn, T. Murakami, Agneta Oskarsson, Y. Berdnikov, M. E. Connors, B. Bassalleck, Seong H. Kim, P. L. McGaughey, Tamas Ferenc Csorgo, W. J. Park, N. Borggren, C. H. Chen, Christopher Rosen, Kazuyoshi Kurita, I. V. Sourikova, B. Love, C. Oakley, A. Drees, M. Heffner, G. R. Young, Y. Akiba, M. Mishra, S. Nagamiya, I. Ravinovich, J. G. Lajoie, Vaclav Vrba, Klaus Johannes Reygers, J. H. Kang, M. Konno, Hongfang Liu, D. E. Fields, B. V. Jacak, N. Apadula, J. L. Nagle, M. Kurosawa, A. Enokizono, P. Chung, P. D. Barnes, A. Yanovich, J. S. Haggerty, M. Chiu, A. Taranenko, Kazushi Miki, T. Horaguchi, M. Bai, M. I. Nagy, K. Okada, B. Sahlmueller, M. Kasai, J. Imrek, I. J. Choi, Y. Onuki, Brajesh K. Singh, A. Kravitz, D. Watanabe, B. Komkov, H. En'yo, M. J. Leitch, K. Sakashita, A. G. Litvinenko, M. Gonin, Jan Rak, K. O. Eyser, A. K. Purwar, K. Fujiwara, T. Jones, A. Glenn, H. Qu, Norio Saito, A. Datta, Y. Nakamiya, Peter Christiansen, Y. L. Yamaguchi, Tsutomu Mibe, M. A. L. Leite, M. Ouchida, N. Means, J. Asai, Eunja Kim, D. Sharma, R. Ichimiya, D. Winter, M. McCumber, R. Lacey, A. V. Kazantsev, S. Tarafdar, R. Granier de Cassagnac, A. Adare, M. D. Malik, E. Vznuzdaev, G. Baksay, D. Yu Peressounko, Jason Kamin, S. Sawada, Hideki Hamagaki, K. Aoki, G. David, P. Tarján, S. N. White, R. Belmont, Eva Haslum, J. S. Kapustinsky, Shingo Sakai, A. Sukhanov, B. Lenzi, V. Babintsev, Deepa Thomas, J. Hanks, H. Pereira, Zhiying You, Marisilvia Donadelli, R. Bennett, Sung Keun Park, B. Azmoun, A. Král, G. S. Kyle, M. J. Kweon, Jen-Chieh Peng, V. Bumazhnov, M. Kawashima, Ajit Kumar Mohanty, Y. Morino, S. P. Stoll, James Alexander, H. Pei, Zvi Hirsh Citron, A. Kozlov, N. N. Ajitanand, Andry Malala Rakotozafindrabe, T. A. Shibata, C. L. Silva, R. Seto, L. Tomášek, Y. S. Lai, M. Finger, R. Averbeck, Byung-Sik Hong, A. Yu. Semenov, S. S.E. Rosendahl, A. Bazilevsky, G. Bunce, H. W. Van Hecke, T. Sato, K. Nakano, Philippe Rosnet, Y. J. Kim, Takahiro Nakamura, K. Haruna, K. S. Sim, R. Tanabe, D. Layton, K. Watanabe, Inkyu Park, J. T. Mitchell, L. Aphecetche, V. Dzhordzhadze, Alexandre Lebedev, J. Gosset, Senta Greene, D. M. Lee, R. Seidl, Y. Kwon, Xiong Wang, W. E. Sondheim, Z. Conesa del Valle, Vladislav Manko, D. Ivanischev, R. Yang, K. Shoji, G. Grim, A. T. Basye, A. Churyn, Susumu Oda, K. B. Lee, D. Jouan, W. C. Chang, M. Slunečka, K. Kiriluk, D. Isenhower, A. Toia, S. Taneja, A. Kiss, S. Belikov, B. Fadem, E. O'Brien, Dong Jo Kim, A. Durum, I. Danchev, L. Mašek, P. A. Rukoyatkin, A. Dion, M. Oka, K. Imai, T. Niita, Henner Buesching, Steve Edwards, Rushan Han, X. He, Catherine Micaela Silvestre, K. Yamaura, P. W. Stankus, Johannes Peter Wessels, C. Vale, B. Meredith, Charles Maguire, B. S. Chang, Christine Angela Aidala, J. Klay, Y. Aramaki, C. A. Ogilvie, V. Peresedov, John Hill, Marcus Hohlmann, Kiyoshi Tanida, A. Veicht, D. Roach, Kisung Lee, T. K. Hemmick, Yasuo Miake, Atsushi Taketani, K. M. Kijima, E. Kistenev, Toru Sugitate, S. Yokkaichi, P. Liebing, Tae-Yeon Lee, P. Ruzicka, L. A. Linden Levy, P. Mikeš, T. C. Awes, Kyoichiro Ozawa, T. Liška, P. Lichtenwalner, J. Koster, Martin Purschke, L. Kochenda, Alexander Milov, I. Nakagawa, T. Engelmore, J. S. Bok, Jun Kikuchi, François Fleuret, Xingguo Li, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, Y. Tanaka, S. Batsouli, H. Masui, A. K. Dubey, S. Campbell, Minghui Liu, A. A. Bickley, V. E. Semenov, H. Al-Ta'Ani, Kenneth Francis Read, H. J. Moon, Tatsuya Chujo, K. N. Barish, L. Baksay, S. Nam, S. Sano, M. L. Brooks, K. Das, E. P. Hartouni, Maya Hachiya Shimomura, Y. I. Makdisi, M. J. Tannenbaum, H. Torii, M. Rosati, A. Kim, D. Mukhopadhyay, S. Rembeczki, Y. Fukao, Alexei Khanzadeev, A. A. Vinogradov, T. Hester, E. Stenlund, J. B. Choi, Jiangyong Jia, Y. Goto, J. Hamblen, V-N. Tram, N. Grau, J. H. Bhom, J. M. Durham, T. V. Moukhanova, Dmitry Blau, Motoi Inaba, E. J. Desmond, R. M. Wright, M. Togawa, E. Vazquez-Zambrano, J. Park, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, R. Vértesi, J. E. Frantz, A. Deshpande, J. Ying, A. Franz, Y. Watanabe, I. Younus, A. Soldatov, D. Kawall, C. M. Camacho, H. Themann, Prashant Shukla, S. F. Pate, Ke. Nakamura, J. Murata, Gerd Joachim Kunde, I. Shein, H. Al-Bataineh, K. Sedgwick, C. Baumann, S. Kametani, C. P. Singh, B. M. Johnson, V. Papavassiliou, R. J. Petti, A. Morreale, Z. Fraenkel, R. K. Choudhury, A. Isupov, C. Suire, J. Sziklai, M. K. Dayananda, Brian Cole, M. Wysocki, R. S. Towell, I. Garishvili, F. Wei, C. Y. Chi, J. Jin, E. M. Takagui, and T. L. Thomas
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Gluon, Nuclear physics, Transverse plane, Distribution function, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, Spin-½
Abstract: We report the first measurement of transverse single-spin asymmetries in J/psi production from transversely polarized p + p collisions at root s = 200 GeV with data taken by the PHENIX experiment in 2006 and 2008. The measurement was performed over the rapidity ranges 1.2 < vertical bar y vertical bar < 2.2 and vertical bar y vertical bar < 0.35 for transverse momenta up to 6 GeV/c. J/psi production at the Relativistic Heavy Ion Collider is dominated by processes involving initial-state gluons, and transverse single-spin asymmetries of the J/psi can provide access to gluon dynamics within the nucleon. Such asymmetries may also shed light on the long-standing question in QCD of the J/psi production mechanism. Asymmetries were obtained as a function of J/psi transverse momentum and Feynman-x, with a value of -0.086 +/- 0.026(stat) +/- 0.003(syst) in the forward region. This result suggests possible nonzero trigluon correlation functions in transversely polarized protons and, if well defined in this reaction, a nonzero gluon Sivers distribution function.
Published: 2010

211. Flange section by combined subclavicular and interscapulo-vertebral routes

Author: G, ROCHE and L, ROUSSELIN
Subjects: Adhesives, Pleural Diseases, Pleurisy
Published: 2010

212. Fatal accident during pneumo-peritoneum

Author: G, ROCHE and J, GIRON
Subjects: Pneumothorax, Artificial, Tuberculosis, Pulmonary Surgical Procedures, Tuberculosis, Pulmonary
Published: 2010

213. HighpTdirect photon andπ0triggered azimuthal jet correlations and measurement ofkTfor isolated direct photons inp+pcollisions ats=200 GeV

Author: Ajit Kumar Mohanty, P. Tarján, T. A. Shibata, T. Sato, David D'Enterria, S. Bathe, Agneta Oskarsson, Alexander Milov, I. Nakagawa, T. Engelmore, O. Drapier, Frank Ellinghaus, Y. Nakamiya, Y. Berdnikov, Y. Akiba, A. V. Kazantsev, E. R. Kinney, D. P. Morrison, S. Campbell, M. Mishra, D. Isenhower, A. Toia, S. Nagamiya, V. E. Semenov, M. N. Wagner, J. Zimányi, C. Baumann, D. Lynch, Tatsuya Chujo, G. Baksay, L. Tomášlek, C. P. Singh, Tae-Yeon Lee, Martin Purschke, L. Mašek, Vaclav Vrba, Klaus Johannes Reygers, I. Tserruya, Yu. Efremenko, S. Butsyk, Vladimir Samsonov, K. Dehmelt, Jen-Chieh Peng, Senta Greene, B. M. Johnson, Xiong Wang, V. Singh, Dong Jo Kim, G. S. Kyle, Osamu Jinnouchi, A. Veicht, James Alexander, A. Isupov, C. Suire, Y. Fukao, T. Niita, A. Shevel, A. T. Basye, B. E. Norman, Maya Hachiya Shimomura, M. Naglis, C. L. Silva, P. Mikeš, J. Sziklai, Y. J. Mao, J. T. Mitchell, S. Kametani, T. Horaguchi, V. L. Rykov, T. Dahms, R. Averbeck, Byung-Sik Hong, Brian Cole, D. Kotchetkov, T. Hester, B. Fadem, I. Ravinovich, Y. I. Makdisi, E. O'Brien, A. Bazilevsky, R. Seidl, J. L. Charvet, Vladislav Manko, M. Slunečka, M. Mitrovski, Philippe Rosnet, B. Love, R. S. Towell, A. Morreale, I. Garishvili, Akio Kiyomichi, F. Wei, Masayasu Ishihara, Y. Nagata, K. O. Eyser, A. K. Purwar, M. Bai, K. Fujiwara, Z. Fraenkel, S. Belikov, Tamas Ferenc Csorgo, R. A. Soltz, H. Borel, E. J. Desmond, T. C. Awes, Kyoichiro Ozawa, T. Liška, T. E. Miller, M. Kurosawa, Jun Kikuchi, H. Iinuma, Alexandre Lebedev, O. Dietzsch, N. Kurihara, E. T. Atomssa, M. J. Tannenbaum, A. G. Litvinenko, D. M. Lee, C. Vale, B. S. Chang, J. L. Nagle, M. Togawa, K. S. Sim, V. Dzhordzhadze, M. Grosse Perdekamp, H. Torii, J. Park, Christine Angela Aidala, R. K. Choudhury, J. Klay, Y. Kwon, H. Valle, Susumu Sato, C. Y. Chi, V-N. Tram, N. Grau, Dipanwita Dutta, Tadaaki Isobe, A. P.T. Palounek, C. A. Ogilvie, K. S. Joo, M. E. Connors, P. Chung, R. Yang, R. Bennett, J. H. Kang, J. S. Haggerty, A. Romana, D. Mukhopadhyay, A. Kozlov, S. Rembeczki, J. Imrek, H. Hiejima, C. L. Woody, A. Berdnikov, K. A. Drees, F. Staley, K. Kiriluk, T. K. Hemmick, M. Wysocki, S. Taneja, R. Seto, K. Haruna, Y. Tsuchimoto, F. Matathias, Saskia Mioduszewski, M. Finger, H. A. Gustafsson, H. W. Van Hecke, Yasuo Miake, P. L. McGaughey, Eva Haslum, J. Chiba, W. S. Emam, M. K. Lee, B. Lenzi, H. Liu, Kensuke Homma, K. Imai, K. Shoji, Motoi Inaba, Julia Velkovska, I. E. Yushmanov, M. Chiu, M. Rosati, P. Constantin, S. Chernichenko, E. H. Kim, S. Dairaku, X. He, O. O. Omiwade, C. Zhang, Alexei Khanzadeev, H. Kanou, Taku Gunji, H. Gong, J. Seele, O. Zaudtke, D. Sharma, D. Winter, D. Kawall, S. Afanasiev, P. W. Stankus, L. Kochenda, B. Bassalleck, A. Ster, H. Themann, J. Jin, M. Konno, V. Peresedov, E. Stenlund, H. Sakata, E. M. Takagui, Takao Sakaguchi, R. Ichimiya, P. Ružička, D. Yu Peressounko, A. Kiss, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, C. Klein-Boesing, J. Newby, J. Koster, F. Kajihara, H. Delagrange, Anne Marie Sickles, M. Virius, B. Azmoun, A. Král, M. J. Kweon, K. Sakashita, A. D. Frawley, T. Tabaru, Robert F. Hobbs, Andry Malala Rakotozafindrabe, Viktor Riabov, Y. S. Lai, S. Batsouli, H. Masui, A. K. Dubey, Z. Yasin, Henner Buesching, V. I. Kochetkov, S. Huang, S. H. Aronson, A. A. Bickley, R. Tanabe, D. Layton, V. S. Pantuev, J. Murata, I. V. Sourikova, J. Egdemir, D. Hornback, Minghui Liu, A. A. Vinogradov, S. Takagi, Jason Kamin, S. Esumi, M. Heffner, S. Zhou, W. Holzmann, K. N. Barish, A. Baldisseri, S. D. Rolnick, M. Oka, C. R. Cleven, G. R. Young, C. Haegemann, Y. Inoue, Junji Tojo, S. P. Stoll, Kenneth Francis Read, A. Taranenko, Jiangyong Jia, Y. Goto, Y. L. Yamaguchi, B. Komkov, A. Dion, T. V. Moukhanova, Gerd Joachim Kunde, I. Shein, W. C. Chang, W. A. Zajc, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Masashi Kaneta, A. Glenn, Kazushi Miki, V. Baublis, A. Denisov, V. Cianciolo, K. Das, R. Vértesi, Y. Onuki, Atsushi Taketani, Marcus Hohlmann, Brajesh K. Singh, S. S.E. Rosendahl, G. Bunce, A. Enokizono, M. Ouchida, T. Kempel, Dong-Hun Kim, K. Sedgwick, P. Liebing, Norio Saito, T. Ichihara, M. A. L. Leite, A. Deshpande, Y. Tomita, Jan Rak, Sergey Fokin, M. L. Brooks, Rushan Han, K. Okada, E. P. Hartouni, R. Lacey, N. Means, J. Asai, B. Sahlmueller, A. Churyn, D. Jouan, Debashish Pal, C. Pinkenburg, R. Granier de Cassagnac, A. Adare, J. E. Frantz, H. En'yo, M. J. Leitch, Steven E. Skutnik, R. Pak, N. Kamihara, S. Sawada, Y. Watanabe, J. S. Kapustinsky, M. Stepanov, G. Roche, A. Yu. Semenov, V. Babintsev, I. Younus, Shingo Sakai, T. L. Thomas, R. Armendariz, J. Ying, A. Franz, H. Qu, Kazuyoshi Kurita, A. Soldatov, J. Gosset, Matthew G. Reuter, A. Drees, Takahiro Fusayasu, J. Kubart, Ryugo S. Hayano, Hideki Hamagaki, K. Aoki, G. David, Y. Riabov, Kenta Shigaki, S. Yokkaichi, M. Nguyen, A. S. Nyanin, Rachid Nouicer, Alexander Malakhov, C. M. Camacho, Prashant Shukla, S. F. Pate, D. Silvermyr, H. Al-Bataineh, L. S. Zolin, W. J. Park, V. Papavassiliou, Sébastien Gadrat, P. D. Barnes, A. Yanovich, S. N. White, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, P. A. Rukoyatkin, B. Meredith, John Hill, Toru Sugitate, L. D. Isenhower, François Fleuret, Hiroaki Ohnishi, K. B. Lee, D. Roach, K. M. Kijima, Xingguo Li, M. Gonin, A. Sukhanov, H. Pereira, Y. Morino, D. E. Fields, B. V. Jacak, M. B. Deaton, Y. Tanaka, M. McCumber, A. Hadj Henni, S. P. Sorensen, Dylan Walker, Beomkyu Kim, K. Boyle, Seong H. Kim, Wei Xie, J. G. Lajoie, T. Hachiya, N. N. Ajitanand, L. Baksay, I. J. Choi, A. Kravitz, Takahiro Nakamura, Charles Maguire, Susumu Oda, A. Durum, Catherine Micaela Silvestre, K. Yamaura, Kiyoshi Tanida, E. Kistenev, H. Harada, H. Pei, M. I. Nagy, M. Issah, M. D. Malik, E. Vznuzdaev, L. Aphecetche, Johannes Peter Wessels, and Mate Csanad
Subjects: Elastic scattering, Physics, Nuclear and High Energy Physics, Photon, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, Compton scattering, Elementary particle, 7. Clean energy, 01 natural sciences, Gluon, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: Correlations of charged hadrons of 1< p(T) < 10 Gev/c with high pT direct photons and pi(0) mesons in the range 5< p(T) < 15 Gev/c are used to study jet fragmentation in the gamma + jet and dijet channels, respectively. The magnitude of the partonic transverse momentum, k(T), is obtained by comparing to a model incorporating a Gaussian kT smearing. The sensitivity of the associated charged hadron spectra to the underlying fragmentation function is tested and the data are compared to calculations using recent global fit results. The shape of the direct photon-associated hadron spectrum as well as its charge asymmetry are found to be consistent with a sample dominated by quark-gluon Compton scattering. No significant evidence of fragmentation photon correlated production is observed within experimental uncertainties.
Published: 2010

214. Azimuthal Anisotropy ofπ0Production inAu+AuCollisions atsNN=200 GeV: Path-Length Dependence of Jet Quenching and the Role of Initial Geometry

Author: L. Tomášek, V. S. Pantuev, T. Horaguchi, Charles Maguire, Kiyoshi Tanida, E. Kistenev, K. Okada, B. Sahlmueller, H. En'yo, M. J. Leitch, Y. Tanaka, K. A. Drees, S. Hegyi, L. Baksay, B. Love, J. P. Wood, K. Das, E. P. Hartouni, A. G. Litvinenko, Alexander Milov, I. Nakagawa, R. Luechtenborg, T. Engelmore, O. Drapier, Frank Ellinghaus, M. Issah, T. Kempel, Dong-Hun Kim, E. R. Kinney, B. Azmoun, A. Král, F. Matathias, Kensuke Homma, E. Richardson, Maya Hachiya Shimomura, K. Watanabe, D. P. Morrison, S. Campbell, Y. I. Makdisi, S. Bathe, Y. J. Kwon, Agneta Oskarsson, R. A. Soltz, S. Afanasiev, K. Shoji, A. Kozlov, Tatsuya Chujo, P. Constantin, R. Seto, M. Grosse Perdekamp, Y. Berdnikov, M. E. Connors, Y. Akiba, M. Ouchida, M. Mishra, S. Nagamiya, P. W. Stankus, M. J. Tannenbaum, N. Means, D. Kotchetkov, J. Newby, H. Torii, K. I. Hahn, B. Bassalleck, M. Oka, S. Dairaku, A. Deshpande, Vaclav Vrba, Klaus Johannes Reygers, D. Hornback, Rui Wei, Peter Christiansen, T. L. Thomas, M. Rosati, M. Heffner, Alice Mignerey, A. Dion, Taku Gunji, H. Gong, I. Danchev, J. Seele, J. Jin, D. Winter, D. Yu Peressounko, M. Konno, Ryugo S. Hayano, P. Tarján, E. M. Takagui, A. Taranenko, F. Kajihara, Y. Riabov, M. Virius, Kenta Shigaki, Kazushi Miki, Takao Sakaguchi, Brajesh K. Singh, M. Nguyen, Atsushi Taketani, A. S. Nyanin, K. N. Barish, A. D. Frawley, Rachid Nouicer, A. A. Vinogradov, C. H. Chen, Y. Watanabe, Y. Ikeda, A. Enokizono, P. Liebing, S. Huang, H. Qu, Senta Greene, C. L. Woody, A. Berdnikov, S. Tarafdar, S. Butsyk, E. J. Mannel, R. Pak, W. Holzmann, Jiangyong Jia, Y. Goto, A. Glenn, A. T. Basye, I. Younus, R. S. Towell, S. Zhou, I. Garishvili, Hideki Hamagaki, K. Aoki, F. Wei, B. Fadem, E. O'Brien, Eva Haslum, B. Lenzi, G. David, N. Kamihara, S. Sano, Kyeongpil Lee, I. V. Sourikova, S. D. Rolnick, J. Ide, C. Pinkenburg, D. Kawall, C. Y. Chi, Ajit Kumar Mohanty, T. A. Shibata, Kazuyoshi Kurita, G. Roche, T. Sato, C. Baumann, S. Kametani, H. Themann, T. Ichihara, C. P. Singh, B. M. Johnson, M. L. Brooks, A. Drees, Jongmin Lee, O. Dietzsch, M. Proissl, A. Isupov, J. Sziklai, E. T. Atomssa, H. Valle, Marisilvia Donadelli, V. Bumazhnov, D. Lynch, X. He, Andry Malala Rakotozafindrabe, Brian Cole, J. Murata, Takahiro Fusayasu, Dipanwita Dutta, M. Gonin, D. S. Jumper, Y. Aramaki, V. Peresedov, T. Dahms, R. Tanabe, Alexander Malakhov, Gerd Joachim Kunde, J. Koster, Julia Velkovska, D. Silvermyr, I. Shein, A. Yu. Semenov, A. Sukhanov, Rushan Han, H. Masui, L. S. Zolin, H. Pereira, Vladimir Samsonov, Y. Morino, W. J. Park, Christopher Rosen, A. A. Bickley, K. Sedgwick, I. Ravinovich, Tamas Ferenc Csorgo, A. Yanovich, M. Bai, J. L. Nagle, S. Yokkaichi, K. B. Lee, S. N. White, A. K. Purwar, K. Fujiwara, Zhiying You, Y. J. Mao, R. Bennett, M. Kawashima, Y. L. Yamaguchi, M. Finger, J. H. Kang, Zvi Hirsh Citron, J. S. Haggerty, Mate Csanad, Hongfang Liu, D. E. Fields, K. Nakano, B. V. Jacak, W. E. Sondheim, E. Leitner, M. Naglis, D. Ivanischev, D. Roach, K. M. Kijima, C. L. Silva, P. A. Rukoyatkin, Y. Onuki, Y. S. Lai, M. McCumber, H. W. Van Hecke, B. Meredith, Xingguo Li, S. P. Sorensen, M. Chiu, A. Kiss, Masayasu Ishihara, John Hill, Henner Buesching, Steve Edwards, Toru Sugitate, Jan Rak, R. Lacey, O. Chvala, Seong H. Kim, J. Hanks, Sung Keun Park, N. N. Ajitanand, J. T. Mitchell, C. A. Ogilvie, Kisung Lee, T. K. Hemmick, Yasuo Miake, R. Seidl, J. G. Lajoie, Marcus Hohlmann, I. J. Choi, A. Kravitz, François Fleuret, R. P. Pisani, Takahiro Nakamura, L. Kochenda, Vladislav Manko, L. A. Linden Levy, M. Slunečka, R. Granier de Cassagnac, Susumu Oda, K. Sakashita, A. Durum, Y. Fukao, A. Adare, S. Belikov, Catherine Micaela Silvestre, K. Yamaura, Jason Kamin, T. Hester, S. P. Stoll, Martin Purschke, S. Sawada, C. Vale, J. Ying, S. S.E. Rosendahl, G. Bunce, A. Franz, N. A. Sparks, Christine Angela Aidala, Y. Nakamiya, D. Jouan, A. Morreale, Z. Fraenkel, R. K. Choudhury, G. Baksay, K. S. Joo, N. Grau, M. Wysocki, D. Sharma, R. Ichimiya, K. S. Sim, Motoi Inaba, R. M. Wright, C. M. Camacho, Prashant Shukla, S. F. Pate, Y. J. Kim, H. Al-Bataineh, V. Papavassiliou, R. Yang, K. Imai, K. Karatsu, Anne Marie Sickles, G. R. Young, B. Komkov, Norio Saito, Minghui Liu, M. A. L. Leite, Kenneth Francis Read, R. Belmont, J. S. Kapustinsky, A. V. Kazantsev, V. Babintsev, G. S. Kyle, James Alexander, R. Averbeck, Byung-Sik Hong, P. Mikeš, A. Bazilevsky, Philippe Rosnet, Alexandre Lebedev, D. M. Lee, K. Kiriluk, E. H. Kim, T. C. Awes, Kyoichiro Ozawa, T. Liška, J. S. Bok, Tadaaki Isobe, P. L. McGaughey, Jen-Chieh Peng, R. Vértesi, Inkyu Park, J. E. Frantz, Xiong Wang, Alexei Khanzadeev, E. Stenlund, Dong Jo Kim, J. Hamblen, J. M. Durham, T. V. Moukhanova, E. J. Desmond, M. Togawa, E. Vazquez-Zambrano, J. Park, A. Veicht, Y. Tsuchimoto, I. Tserruya, Yu. Efremenko, I. E. Yushmanov, V. Singh, H. A. Gustafsson, Johannes Peter Wessels, C. Zhang, Eunja Kim, Beomkyu Kim, K. Boyle, Wei Xie, M. I. Nagy, D. Watanabe, M. D. Malik, E. Vznuzdaev, P. Ružička, Viktor Riabov, S. Esumi, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, D. Isenhower, A. Toia, Sergey Fokin, M. Kurosawa, P. Chung, A. Datta, and H. Pei
Subjects: Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Elliptic flow, Hadron, General Physics and Astronomy, Perturbative QCD, Elementary particle, 01 natural sciences, Gluon, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Anisotropy, Jet quenching
Abstract: We have measured the azimuthal anisotropy of pi(0) production for 1 < p(T) < 18 GeV/c for Au + Au collisions at root s(NN) = 200 GeV. The observed anisotropy shows a gradual decrease for 3 less than or similar to p(T) less than or similar to 7-10 GeV/c, but remains positive beyond 10 GeV/c. The magnitude of this anisotropy is underpredicted, up to at least similar to 10 GeV/c, by current perturbative QCD (PQCD) energy-loss model calculations. An estimate of the increase in anisotropy expected from initial-geometry modification due to gluon saturation effects and fluctuations is insufficient to account for this discrepancy. Calculations that implement a path-length dependence steeper than what is implied by current PQCD energy-loss models show reasonable agreement with the data.
Published: 2010

215. Cross section and parity-violating spin asymmetries of W± boson production in polarized p + p collisions at sqrt[s] = 500 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, R, Akimoto, J, Alexander, H, Al-Ta'ani, K R, Andrews, A, Angerami, K, Aoki, N, Apadula, E, Appelt, Y, Aramaki, R, Armendariz, E C, Aschenauer, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, B, Bannier, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, R, Belmont, J, Ben-Benjamin, R, Bennett, A, Berdnikov, Y, Berdnikov, D S, Blau, J S, Bok, K, Boyle, M L, Brooks, D, Broxmeyer, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, S, Campbell, A, Caringi, P, Castera, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, J B, Choi, R K, Choudhury, P, Christiansen, T, Chujo, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, Z, Conesa del Valle, M, Connors, M, Csanád, T, Csörgo, S, Dairaku, A, Datta, G, David, M K, Dayananda, A, Denisov, A, Deshpande, E J, Desmond, K V, Dharmawardane, O, Dietzsch, A, Dion, M, Donadelli, L, D'Orazio, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, Y V, Efremenko, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, J E, Frantz, A, Franz, A D, Frawley, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, X, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, L, Guo, H-Å, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, J, Hanks, R, Han, C, Harper, K, Hashimoto, E, Haslum, R, Hayano, T K, Hemmick, T, Hester, X, He, J C, Hill, R S, Hollis, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, Y, Hori, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, H, Iinuma, Y, Ikeda, K, Imai, M, Inaba, A, Iordanova, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, D, Ivanischev, Y, Iwanaga, B V, Jacak, J, Jia, X, Jiang, B M, Johnson, T, Jones, K S, Joo, D, Jouan, J, Kamin, S, Kaneti, B H, Kang, J H, Kang, J S, Kang, J, Kapustinsky, K, Karatsu, M, Kasai, D, Kawall, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, B I, Kim, D J, Kim, E J, Kim, Y-J, Kim, Y K, Kim, E, Kinney, Á, Kiss, E, Kistenev, D, Kleinjan, P, Kline, L, Kochenda, B, Komkov, M, Konno, J, Koster, D, Kotov, A, Král, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K B, Lee, K S, Lee, S H, Lee, S R, Lee, M J, Leitch, M A L, Leite, P, Lichtenwalner, S H, Lim, L A, Linden Levy, A, Litvinenko, H, Liu, M X, Liu, X, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, A, Manion, V I, Manko, E, Mannel, Y, Mao, H, Masui, M, McCumber, P L, McGaughey, D, McGlinchey, C, McKinney, N, Means, M, Mendoza, B, Meredith, Y, Miake, T, Mibe, A C, Mignerey, K, Miki, A, Milov, J T, Mitchell, Y, Miyachi, A K, Mohanty, H J, Moon, Y, Morino, A, Morreale, D P, Morrison, S, Motschwiller, T V, Moukhanova, T, Murakami, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, K R, Nakamura, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, M, Nihashi, R, Nouicer, A S, Nyanin, C, Oakley, E, O'Brien, C A, Ogilvie, K, Okada, M, Oka, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, B H, Park, I H, Park, S K, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, R, Petti, C, Pinkenburg, R P, Pisani, M, Proissl, M L, Purschke, H, Qu, J, Rak, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, S S E, Rosendahl, P, Rukoyatkin, B, Sahlmueller, N, Saito, T, Sakaguchi, V, Samsonov, S, Sano, M, Sarsour, T, Sato, M, Savastio, S, Sawada, K, Sedgwick, R, Seidl, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, H H, Shim, M, Shimomura, 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, Slunečka, T, Sodre, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sun, J, Sziklai, E M, Takagui, A, Takahara, A, Taketani, R, Tanabe, Y, Tanaka, S, Taneja, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, E, Tennant, H, Themann, D, Thomas, M, Togawa, L, Tomášek, M, Tomášek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, K, Utsunomiya, C, Vale, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, M, Virius, A, Vossen, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, Y S, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, C L, Woody, R M, Wright, M, Wysocki, Y L, Yamaguchi, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, J S, Yoo, G R, Young, I, Younus, Z, You, I E, Yushmanov, W A, Zajc, A, Zelenski, S, Zhou, and L, Zolin
Abstract: Large parity-violating longitudinal single-spin asymmetries A(L)(e+) = -0.86(-0.14) (+0.30) and A(L)(e-) = 0.88(-0.71) (+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p+p collisions at a center-of-mass energy of sqrt[s] = 500 GeV with the PHENIX detector at RHIC. These e± come mainly from the decay of W± and Z0 bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W± to the light quarks. The observed electron and positron yields were used to estimate W± boson production cross sections for the e± channels of σ(pp → W+ X) × BR(W+ → e+ ν(e)) = 144.1 ± 21.2(stat)(-10.3) (+3.4) (syst) ± 21.6(norm) pb, and σ(pp → W- X) × BR(W- → e- ν[over ¯](e)) = 31.7 ± 12.1(stat)(-8.2) (+10.1) (syst) ± 4.8(norm) pb.
Published: 2010

216. Elliptic and Hexadecapole Flow of Charged Hadrons inAu+AuCollisions atsNN=200 GeV

Author: D. Sharma, R. Ichimiya, B. Azmoun, A. Král, M. Oka, A. Dion, Atsushi Taketani, A. Enokizono, P. Liebing, Martin Purschke, Mate Csanad, A. Morreale, Z. Fraenkel, C. M. Camacho, M. Rosati, R. K. Choudhury, K. Karatsu, S. Dairaku, E. H. Kim, Alice Mignerey, Y. Nakamiya, Sung Keun Park, Prashant Shukla, L. Tomášek, V. S. Pantuev, R. A. Soltz, S. F. Pate, Marisilvia Donadelli, M. Gonin, Anne Marie Sickles, V. Bumazhnov, Y. J. Mao, B. Meredith, N. N. Ajitanand, S. Esumi, H. Al-Bataineh, R. Pak, M. Grosse Perdekamp, M. E. Connors, E. J. Desmond, A. A. Vinogradov, Minghui Liu, A. Sukhanov, H. Pereira, S. Tarafdar, Y. Tanaka, W. A. Zajc, Andry Malala Rakotozafindrabe, G. Baksay, M. Togawa, E. Vazquez-Zambrano, N. Kamihara, G. R. Young, S. Bathe, H. Qu, K. A. Drees, V. Baublis, A. Denisov, Takao Sakaguchi, R. P. Pisani, V. Cianciolo, K. Okada, Y. Morino, Jiangyong Jia, Y. Goto, Kenneth Francis Read, S. Hegyi, Eva Haslum, B. Lenzi, B. Sahlmueller, H. En'yo, J. H. Kang, John Hill, V. Papavassiliou, K. N. Barish, M. Virius, Y. J. Kim, Agneta Oskarsson, M. J. Leitch, J. Park, Y. Onuki, J. S. Haggerty, Sergey Fokin, Hideki Hamagaki, K. Aoki, R. Tanabe, Kazuyoshi Kurita, K. Tanida, S. Afanasiev, G. David, J. T. Mitchell, A. D. Frawley, Jan Rak, Takahiro Nakamura, Peter Christiansen, A. Drees, M. Kurosawa, Y. Fukao, R. Seidl, Tadaaki Isobe, B. Komkov, R. Lacey, J. Newby, D. Winter, L. Baksay, D. Yu Peressounko, Y. J. Kwon, T. Hester, Y. Berdnikov, Y. Akiba, Toru Sugitate, R. Granier de Cassagnac, A. Adare, Vladislav Manko, M. Slunečka, Y. Tsuchimoto, P. Tarján, Johannes Peter Wessels, M. Ouchida, S. P. Sorensen, Charles Maguire, S. Huang, C. H. Chen, M. Mishra, Norio Saito, S. Nagamiya, N. A. Sparks, K. Sakashita, H. A. Gustafsson, S. Belikov, P. L. McGaughey, N. Means, M. A. L. Leite, P. Chung, K. Das, M. Wysocki, E. P. Hartouni, Susumu Oda, D. Hornback, D. Kotchetkov, O. Chvala, C. Zhang, M. Heffner, I. E. Yushmanov, S. Sano, W. Holzmann, Vaclav Vrba, Klaus Johannes Reygers, A. Durum, Maya Hachiya Shimomura, Seong H. Kim, M. Issah, N. Grau, Jason Kamin, A. Glenn, E. Kistenev, P. Ružička, K. S. Sim, C. Vale, A. Taranenko, T. Kempel, Dong-Hun Kim, Rui Wei, Senta Greene, Alexei Khanzadeev, Y. I. Makdisi, J. G. Lajoie, Beomkyu Kim, K. Boyle, Christine Angela Aidala, S. P. Stoll, I. Ravinovich, Kazushi Miki, A. V. Kazantsev, Catherine Micaela Silvestre, A. Datta, E. Stenlund, Rushan Han, A. T. Basye, Wei Xie, Motoi Inaba, Brajesh K. Singh, K. Yamaura, R. M. Wright, Viktor Riabov, R. Belmont, J. S. Kapustinsky, S. Sawada, V. Babintsev, H. Pei, A. K. Purwar, B. Fadem, K. Fujiwara, E. O'Brien, Vladimir Samsonov, I. J. Choi, A. Kravitz, S. S.E. Rosendahl, G. Bunce, M. Bai, O. Dietzsch, J. Ying, A. Franz, P. Mikeš, G. S. Kyle, T. Horaguchi, C. L. Woody, A. Berdnikov, K. B. Lee, F. Matathias, François Fleuret, Y. S. Lai, K. Watanabe, M. Proissl, E. T. Atomssa, H. Valle, A. Yu. Semenov, Kensuke Homma, E. Richardson, Y. L. Yamaguchi, Ajit Kumar Mohanty, James Alexander, T. A. Shibata, M. J. Tannenbaum, Dipanwita Dutta, P. Constantin, H. Torii, K. Shoji, T. Sato, R. Averbeck, Byung-Sik Hong, K. I. Hahn, A. Bazilevsky, E. Leitner, Hongfang Liu, D. Jouan, D. E. Fields, T. C. Awes, Kyoichiro Ozawa, T. Liška, B. Bassalleck, Julia Velkovska, B. V. Jacak, D. Roach, Philippe Rosnet, J. S. Bok, M. Chiu, M. Konno, J. Hamblen, P. W. Stankus, J. M. Durham, Tamas Ferenc Csorgo, K. M. Kijima, S. N. White, Alexandre Lebedev, C. A. Ogilvie, M. McCumber, D. M. Lee, Zhiying You, M. I. Nagy, R. Bennett, T. K. Hemmick, H. W. Van Hecke, I. V. Sourikova, J. L. Nagle, M. Kawashima, T. L. Thomas, D. Isenhower, A. Toia, D. Watanabe, K. Kiriluk, Yasuo Miake, M. D. Malik, S. Yokkaichi, Xingguo Li, T. V. Moukhanova, E. Vznuzdaev, M. Finger, L. Kochenda, M. L. Brooks, Y. Ikeda, Ryugo S. Hayano, Jongmin Lee, E. J. Mannel, Y. Riabov, A. Kiss, R. Vértesi, J. Hanks, Kenta Shigaki, M. Nguyen, D. Lynch, C. Pinkenburg, Zvi Hirsh Citron, Henner Buesching, Taku Gunji, H. Gong, J. Seele, Steve Edwards, A. S. Nyanin, G. Roche, F. Kajihara, Rachid Nouicer, D. S. Jumper, K. S. Lee, T. Dahms, K. Nakano, X. He, Marcus Hohlmann, L. A. Linden Levy, S. Butsyk, Y. Aramaki, V. Peresedov, W. E. Sondheim, S. Zhou, D. Ivanischev, S. D. Rolnick, J. Koster, J. E. Frantz, H. Masui, A. A. Bickley, B. Love, P. A. Rukoyatkin, T. Ichihara, A. G. Litvinenko, Takahiro Fusayasu, Alexander Malakhov, A. Kozlov, R. Seto, D. Silvermyr, L. S. Zolin, W. J. Park, Christopher Rosen, I. Danchev, A. Yanovich, R. S. Towell, I. Garishvili, F. Wei, Kyeongpil Lee, J. Ide, C. Y. Chi, C. Baumann, S. Kametani, C. P. Singh, B. M. Johnson, A. Isupov, J. Sziklai, Brian Cole, J. Jin, E. M. Takagui, D. Kawall, H. Themann, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, A. Deshpande, Y. Watanabe, I. Younus, Jen-Chieh Peng, M. Naglis, C. L. Silva, Masayasu Ishihara, Inkyu Park, Xiong Wang, Dong Jo Kim, A. Veicht, I. Tserruya, Yu. Efremenko, V. Singh, R. Yang, K. Imai, Eunja Kim, J. P. Wood, Alexander Milov, I. Nakagawa, R. Luechtenborg, T. Engelmore, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. P. Morrison, S. Campbell, Tatsuya Chujo, and K. S. Joo
Subjects: Physics, Nuclear reaction, 010308 nuclear & particles physics, Elliptic flow, Hadron, General Physics and Astronomy, Elementary particle, Fermion, 01 natural sciences, Charged particle, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: Differential measurements of the elliptic (upsilon(2)) and hexadecapole (upsilon(4)) Fourier flow coefficients are reported for charged hadrons as a function of transverse momentum (p(T)) and collision centrality or number of participant nucleons (N-part) for Au + Au collisions at root s(NN) = 200 GeV/ The upsilon(2,4) measurements at pseudorapidity vertical bar eta vertical bar
Published: 2010

217. Transverse momentum dependence ofηmeson suppression in Au+Au collisions atsNN=200GeV

Author: J. H. Kang, Vladimir Samsonov, J. S. Haggerty, S. Afanasiev, A. Ster, S. Sano, J. Newby, Tamas Ferenc Csorgo, M. Gonin, T. L. Thomas, J. L. Nagle, Marisilvia Donadelli, V. Bumazhnov, Andry Malala Rakotozafindrabe, R. Tanabe, D. Layton, W. C. Chang, Rushan Han, R. A. Soltz, H. Borel, D. Hornback, S. Dairaku, Ryugo S. Hayano, A. Deshpande, O. Dietzsch, M. Proissl, Y. Riabov, A. Sukhanov, K. Shoji, Y. S. Lai, M. Heffner, A. Taranenko, E. T. Atomssa, H. Valle, Kenta Shigaki, B. Komkov, K. N. Barish, H. Pereira, Y. Morino, O. Zaudtke, B. Meredith, K. S. Joo, Y. Nakamiya, M. Nguyen, Dipanwita Dutta, P. W. Stankus, M. Grosse Perdekamp, Y. Watanabe, S. Belikov, Kazushi Miki, T. Horaguchi, Z. Fraenkel, Norio Saito, M. A. L. Leite, A. Yu. Semenov, Hongfang Liu, R. Vértesi, Julia Velkovska, M. I. Nagy, J. Gosset, D. Watanabe, G. Baksay, A. S. Nyanin, Maya Hachiya Shimomura, M. Virius, M. E. Connors, B. V. Jacak, M. L. Brooks, Minghui Liu, Brajesh K. Singh, Y. Fukao, K. Karatsu, John Hill, I. Younus, Y. I. Makdisi, B. Love, Rachid Nouicer, M. D. Malik, E. Vznuzdaev, R. S. Towell, D. E. Fields, Y. J. Kim, J. T. Mitchell, M. Rosati, A. G. Litvinenko, Anne Marie Sickles, D. Kotchetkov, S. P. Sorensen, C. A. Ogilvie, M. McCumber, D. Sharma, R. Ichimiya, K. O. Eyser, A. K. Purwar, K. Fujiwara, Tae-Yeon Lee, R. Seidl, T. K. Hemmick, A. Kozlov, R. Seto, K. Haruna, Kenneth Francis Read, A. Soldatov, T. Hester, L. Tomášek, R. Belmont, J. S. Kapustinsky, V. Babintsev, C. Zhang, A. A. Vinogradov, A. V. Kazantsev, Yasuo Miake, Y. Tanaka, C. A. Rosen, I. Garishvili, F. Wei, N. A. Sparks, E. H. Kim, Martin Purschke, Kyeongpil Lee, Vladislav Manko, H. Qu, Jen-Chieh Peng, C. H. Chen, M. Slunečka, Toru Sugitate, G. R. Young, S. Tarafdar, I. Danchev, Hideki Hamagaki, K. Aoki, V. S. Pantuev, L. Aphecetche, A. Glenn, M. J. Tannenbaum, S. Yokkaichi, X. He, K. A. Drees, O. Chvala, Seong H. Kim, J. Ide, C. Y. Chi, Inkyu Park, J. Hanks, Xiong Wang, Peter Christiansen, Jiangyong Jia, Y. Goto, D. Winter, L. Kochenda, Y. Onuki, S. Hegyi, G. David, J. E. Frantz, M. Ouchida, N. Means, D. Yu Peressounko, E. Leitner, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Jan Rak, K. Watanabe, J. Asai, Dong Jo Kim, P. Ružička, H. Torii, M. Naglis, C. L. Silva, R. Lacey, Sung Keun Park, J. G. Lajoie, Yorito Yamaguchi, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, P. Mikeš, Y. Aramaki, V. Peresedov, Eva Haslum, B. Lenzi, R. Pak, P. Tarján, R. Granier de Cassagnac, A. Adare, D. Mukhopadhyay, A. Morreale, Johannes Peter Wessels, S. Rembeczki, Jongmin Lee, C. Pinkenburg, L. Baksay, N. N. Ajitanand, Viktor Riabov, V-N. Tram, N. Grau, N. Kamihara, S. Sawada, J. Ying, A. Franz, M. Issah, J. Koster, S. Batsouli, H. Masui, A. K. Dubey, F. Matathias, Shingo Sakai, I. J. Choi, A. Kravitz, A. Veicht, E. J. Desmond, K. Tanida, Eun Joo Kim, M. Stepanov, G. Roche, Masayasu Ishihara, H. Pei, D. Lynch, Kensuke Homma, Kazuyoshi Kurita, E. Richardson, H. W. Van Hecke, A. A. Bickley, K. Okada, R. K. Choudhury, A. Hadj Henni, B. Sahlmueller, I. Tserruya, B. Azmoun, Yu. Efremenko, A. Král, M. J. Kweon, Takahiro Nakamura, A. Drees, K. B. Lee, P. Constantin, S. Chernichenko, J. Jin, E. M. Takagui, G. S. Kyle, C. L. Woody, A. Berdnikov, T. Kempel, Dong-Hun Kim, V. Singh, H. En'yo, S. Esumi, M. Togawa, M. J. Leitch, K. I. Hahn, K. S. Sim, C. Baumann, S. Kametani, E. Vazquez-Zambrano, F. Staley, D. Kawall, Motoi Inaba, Beomkyu Kim, K. Boyle, James Alexander, J. Park, B. Bassalleck, D. S. Jumper, Alice Mignerey, C. P. Singh, K. Sakashita, K. S. Lee, C. M. Camacho, V. Dzhordzhadze, H. Å Gustafsson, Wei Xie, Prashant Shukla, R. M. Wright, Y. Kwon, B. M. Johnson, K. Das, H. Themann, Susumu Oda, Mate Csanad, M. Konno, A. Kiss, V. L. Rykov, T. Dahms, R. Yang, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, E. P. Hartouni, S. F. Pate, A. Durum, A. Isupov, C. Suire, Henner Buesching, Senta Greene, Jason Kamin, K. Imai, J. Sziklai, W. A. Zajc, François Fleuret, Philippe Rosnet, J. Murata, M. Oka, A. T. Basye, Brian Cole, Steve Edwards, I. Ravinovich, Takao Sakaguchi, Catherine Micaela Silvestre, S. P. Stoll, I. V. Sourikova, T. C. Awes, H. Al-Bataineh, Gerd Joachim Kunde, Alexandre Lebedev, V. Baublis, A. Denisov, Y. Tsuchimoto, Kyoichiro Ozawa, T. Liška, K. Yamaura, Charles Maguire, J. S. Bok, V. Cianciolo, C. Klein-Boesing, B. Fadem, A. Dion, David D'Enterria, S. S.E. Rosendahl, G. Bunce, I. Shein, Y. Tomita, E. O'Brien, J. P. Wood, M. Bai, Sergey Fokin, Marcus Hohlmann, A. D. Frawley, Jun Kikuchi, D. M. Lee, A. Churyn, K. Sedgwick, Alexander Milov, Atsushi Taketani, D. Jouan, A. Enokizono, P. Liebing, I. Nakagawa, R. Luechtenborg, T. Engelmore, R. P. Pisani, E. Kistenev, V. Papavassiliou, S. N. White, O. Drapier, Tadaaki Isobe, L. A. Linden Levy, Frank Ellinghaus, S. Huang, K. Kiriluk, E. R. Kinney, D. P. Morrison, S. Bathe, S. Campbell, I. E. Yushmanov, W. Holzmann, Agneta Oskarsson, V. E. Semenov, D. Roach, Zvi Hirsh Citron, K. M. Kijima, Tatsuya Chujo, Y. Berdnikov, Zhiying You, Y. Akiba, R. Bennett, K. Nakano, M. Mishra, S. Nagamiya, M. Kawashima, W. E. Sondheim, Vaclav Vrba, Klaus Johannes Reygers, Alexei Khanzadeev, P. L. McGaughey, Rui Wei, D. Ivanischev, M. Finger, H. Iinuma, M. Wysocki, A. P.T. Palounek, Xingguo Li, P. A. Rukoyatkin, T. Ichihara, M. Chiu, Takahiro Fusayasu, E. Stenlund, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, J. Hamblen, J. M. Durham, T. V. Moukhanova, Taku Gunji, H. Gong, J. Seele, F. Kajihara, S. Butsyk, S. Zhou, A. Baldisseri, S. D. Rolnick, Ajit Kumar Mohanty, T. A. Shibata, T. Sato, D. Isenhower, A. Toia, L. Mašek, T. Niita, J. L. Charvet, M. Kurosawa, P. Chung, J. Imrek, A. Datta, and Y. J. Mao
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Meson, 010308 nuclear & particles physics, Hadron, Elementary particle, 01 natural sciences, 7. Clean energy, Standard deviation, Nuclear physics, Pion, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Boson
Abstract: New measurements by the PHENIX experiment at the Relativistic Heavy Ion Collider for. production at midrapidity as a function of transverse momentum ((PT)) and collision centrality in root s(NN) = 200 GeV Au + Au and p + p collisions are presented. They indicate nuclear modification factors (R-AA) which are similar in both magnitude and trend to those found in earlier pi(0) measurements. Linear fits to R-AA as a function of (PT) in 5-20 GeV/c show that the slope is consistent with zero within two standard deviations at all centralities, although a slow rise cannot be excluded. Having different statistical and systematic uncertainties, the pi(0) and eta measurements are complementary at high (PT); thus, along with the extended (PT) range of these data they can provide additional constraints for theoretical modeling and the extraction of transport properties.
Published: 2010

218. Transverse momentum dependence ofJ/ψpolarization at midrapidity inp+pcollisions ats=200 GeV

Author: C. P. Singh, B. M. Johnson, S. Afanasiev, A. Ster, A. Isupov, C. Suire, J. Newby, J. Sziklai, Brian Cole, D. Hornback, M. Heffner, V. S. Pantuev, Mate Csanad, A. Taranenko, S. Dairaku, Jen-Chieh Peng, Kazushi Miki, Brajesh K. Singh, E. J. Desmond, Xiong Wang, Z. Conesa del Valle, David D'Enterria, N. N. Ajitanand, Dong Jo Kim, B. Azmoun, A. Král, M. J. Kweon, Takahiro Nakamura, B. Love, P. Tarján, O. Zaudtke, Susumu Oda, M. Togawa, K. A. Drees, H. Liu, J. Jin, K. Shoji, A. Durum, Y. Fukao, E. M. Takagui, C. Silvestre, J. Park, A. Veicht, A. V. Kazantsev, R. S. Towell, I. Garishvili, F. Wei, Hiroyuki Okada, M. Virius, K. Yamaura, T. Hester, C. Y. Chi, A. Deshpande, A. G. Litvinenko, P. W. Stankus, Marisilvia Donadelli, Maya Hachiya Shimomura, I. Tserruya, K. Okada, M. Oka, Y. Tsuchimoto, V. Bumazhnov, Andry Malala Rakotozafindrabe, A. Dion, Eva Haslum, Yu. Efremenko, B. Lenzi, Y. I. Makdisi, V. Singh, V-N. Tram, B. Sahlmueller, N. Grau, R. Tanabe, K. Das, H. En'yo, M. J. Leitch, D. Layton, A. Kozlov, O. Dietzsch, E. T. Atomssa, H. Valle, E. P. Hartouni, Atsushi Taketani, R. Seto, K. Haruna, Motoi Inaba, D. E. Fields, A. Enokizono, P. Liebing, W. C. Chang, I. E. Yushmanov, B. V. Jacak, Dipanwita Dutta, F. Matathias, Senta Greene, K. B. Lee, Kensuke Homma, Y. Watanabe, M. McCumber, Rushan Han, H. Pei, M. J. Tannenbaum, Tae-Yeon Lee, Julia Velkovska, Martin Purschke, A. T. Basye, Alexei Khanzadeev, I. Younus, H. Torii, Vladimir Samsonov, A. Glenn, S. Sawada, J. Ying, A. Franz, P. Constantin, S. Chernichenko, C. L. Woody, A. Berdnikov, L. Tomášek, X. He, B. Fadem, E. O'Brien, A. Soldatov, E. Stenlund, Anne Marie Sickles, D. Mukhopadhyay, A. Morreale, S. Rembeczki, M. Rosati, Tamas Ferenc Csorgo, B. Bassalleck, T. Kempel, Dong-Hun Kim, R. A. Soltz, J. L. Nagle, C. M. Camacho, Z. Fraenkel, V. Peresedov, Prashant Shukla, L. Aphecetche, S. F. Pate, B. Meredith, M. Konno, R. K. Choudhury, Alexander Milov, I. Nakagawa, T. Engelmore, M. Naglis, K. S. Joo, O. Drapier, Frank Ellinghaus, M. Grosse Perdekamp, J. Koster, Herve Borel, D. Lynch, C. L. Silva, H. Al-Bataineh, A. A. Vinogradov, E. R. Kinney, J. T. Mitchell, R. Seidl, Vladislav Manko, D. Roach, D. P. Morrison, S. Campbell, K. M. Kijima, S. Batsouli, Masayasu Ishihara, H. Masui, John Hill, A. K. Dubey, V. Papavassiliou, H. Qu, M. Slunečka, V. E. Semenov, Jiangyong Jia, Y. Goto, Takao Sakaguchi, S. Belikov, V. L. Rykov, T. Dahms, T. V. Moukhanova, C. Klein-Boesing, A. A. Bickley, S. Esumi, D. Sharma, Hideki Hamagaki, K. Aoki, Tatsuya Chujo, A. D. Frawley, R. Ichimiya, I. Ravinovich, G. David, G. R. Young, T. C. Awes, Xingguo Li, Toru Sugitate, D. Kawall, K. Tanida, R. Vértesi, H. Themann, Kyoichiro Ozawa, T. Liška, C. Vale, S. Huang, B. S. Chang, Christine Angela Aidala, Jun Kikuchi, M. Bai, J. Klay, Y. Nakamiya, K. N. Barish, M. Wysocki, J. Murata, Johannes Peter Wessels, W. Holzmann, G. Baksay, I. V. Sourikova, D. Winter, S. P. Sorensen, A. Hadj Henni, D. Yu Peressounko, W. A. Zajc, Gerd Joachim Kunde, T. L. Thomas, François Fleuret, I. Shein, K. S. Sim, V. Dzhordzhadze, R. Bennett, Seong H. Kim, J. G. Lajoie, S. N. White, J. E. Frantz, K. Sedgwick, M. Finger, Beomkyu Kim, K. Boyle, Y. Kwon, Wei Xie, R. Yang, Alberto Baldisseri, Minghui Liu, M. L. Brooks, Zvi Hirsh Citron, Ryugo S. Hayano, I. J. Choi, A. Kravitz, Charles Maguire, M. Gonin, K. Nakano, W. E. Sondheim, D. Ivanischev, Y. Riabov, K. Imai, Kenneth Francis Read, V. Baublis, A. Sukhanov, P. A. Rukoyatkin, T. Ichihara, H. Pereira, Kenta Shigaki, Y. Morino, Y. Onuki, Takahiro Fusayasu, M. Nguyen, Alexander Malakhov, Tadaaki Isobe, D. Silvermyr, Jan Rak, R. Lacey, A. Denisov, V. Cianciolo, A. S. Nyanin, L. S. Zolin, W. J. Park, R. Granier de Cassagnac, A. Adare, P. D. Barnes, A. Yanovich, Rachid Nouicer, M. I. Nagy, M. Issah, P. L. McGaughey, Y. Tomita, M. Chiu, M. D. Malik, E. Vznuzdaev, E. Kistenev, Sergey Fokin, M. Ouchida, N. Means, J. Asai, Shingo Sakai, Y. Tanaka, F. Staley, L. Baksay, H. A. Gustafsson, C. Zhang, P. Ružička, Viktor Riabov, A. P.T. Palounek, E. H. Kim, K. Sakashita, A. Kiss, Henner Buesching, Jason Kamin, Marcus Hohlmann, Y. L. Yamaguchi, B. Komkov, S. P. Stoll, P. Mikeš, K. O. Eyser, A. K. Purwar, K. Fujiwara, Norio Saito, S. S.E. Rosendahl, M. A. L. Leite, G. Bunce, A. Churyn, Y. J. Mao, T. Horaguchi, D. Jouan, H. W. Van Hecke, J. H. Kang, R. Pak, J. S. Haggerty, J. S. Kapustinsky, N. Kamihara, V. Babintsev, G. S. Kyle, Kazuyoshi Kurita, A. Drees, James Alexander, S. Bathe, Y. S. Lai, Taku Gunji, H. Gong, J. Seele, A. Yu. Semenov, J. Gosset, R. Averbeck, F. Kajihara, Byung-Sik Hong, Agneta Oskarsson, C. A. Ogilvie, T. K. Hemmick, A. Bazilevsky, Yasuo Miake, Philippe Rosnet, L. Kochenda, S. Yokkaichi, Y. Berdnikov, Y. Akiba, Alexandre Lebedev, Y. Ikeda, M. Mishra, J. G. Boissevain, E. J. Mannel, S. Butsyk, D. M. Lee, S. Nagamiya, C. Pinkenburg, Vaclav Vrba, Klaus Johannes Reygers, M. Stepanov, G. Roche, K. Kiriluk, S. Zhou, S. D. Rolnick, J. L. Charvet, M. Kurosawa, P. Chung, J. Imrek, Ajit Kumar Mohanty, T. A. Shibata, T. Sato, D. Isenhower, A. Toia, L. Mašek, T. Niita, C. Baumann, and S. Kametani
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Phenomenology, Hadron, Elementary particle, Polarization (waves), Quarkonium, Helicity, Nuclear physics, Transverse plane, High Energy Physics::Experiment, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract: We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p + p collisions at root s = 200 GeV performed by the PHENIX Experiment at the Relativistic Heavy Ion Collider. The J/psi polarization is studied in the helicity, Gottfried-Jackson, and Collins-Soper frames for p(T) < 5 GeV/c and vertical bar y vertical bar < 0.35. The polarization in the helicity and Gottfried-Jackson frames is consistent with zero for all transverse momenta, with a slight (1.8 sigma) trend towards longitudinal polarization for transverse momenta above 2 GeV/c. No conclusion is allowed due to the limited acceptance in the Collins-Soper frame and the uncertainties of the current data. The results are compared to observations for other collision systems and center of mass energies and to different quarkonia production models.
Published: 2010

219. Azimuthal anisotropy of π⁰ production in Au+Au collisions at sqrt((s)NN)=200 GeV: path-length dependence of jet quenching and the role of initial geometry

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, K, Aoki, Y, Aramaki, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, G, Baksay, L, Baksay, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, S, Belikov, R, Belmont, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J S, Bok, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, P, Christiansen, T, Chujo, P, Chung, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, M, Connors, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, S, Dairaku, I, Danchev, K, Das, A, Datta, G, David, A, Denisov, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, D, Dutta, S, Edwards, Y V, Efremenko, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, H, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-Å, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, J, Hanks, R, Han, E P, Hartouni, E, Haslum, R, Hayano, M, Heffner, S, Hegyi, T K, Hemmick, T, Hester, X, He, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, J, Ide, Y, Ikeda, K, Imai, M, Inaba, D, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, D, Ivanischev, B V, Jacak, J, Jia, J, Jin, B M, Johnson, K S, Joo, D, Jouan, D S, Jumper, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, J H, Kang, J, Kapustinsky, K, Karatsu, D, Kawall, M, Kawashima, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, B I, Kim, D H, Kim, D J, Kim, E J, Kim, E, Kim, S H, Kim, Y J, Kim, E, Kinney, K, Kiriluk, A, Kiss, E, Kistenev, L, Kochenda, B, Komkov, M, Konno, J, Koster, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K B, Lee, K, Lee, K S, Lee, M J, Leitch, M A L, Leite, E, Leitner, B, Lenzi, P, Liebing, L A, Linden Levy, T, Liška, A, Litvinenko, H, Liu, M X, Liu, X, Li, B, Love, R, Luechtenborg, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, A C, Mignerey, P, Mikeš, K, Miki, A, Milov, M, Mishra, J T, Mitchell, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, R, Nouicer, A S, Nyanin, E, O'Brien, S X, Oda, C A, Ogilvie, K, Okada, M, Oka, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, I H, Park, J, Park, S K, 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, Proissl, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, C A, Rosen, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, P, Ružička, B, Sahlmueller, N, Saito, T, Sakaguchi, K, Sakashita, V, Samsonov, S, Sano, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunečka, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, N A, Sparks, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, M, Togawa, A, Toia, L, Tomášek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, J P, Wood, C L, Woody, R M, Wright, M, Wysocki, W, Xie, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, G R, Young, I, Younus, Z, You, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, and L, Zolin
Abstract: We have measured the azimuthal anisotropy of π⁰ production for 1p(T)18 GeV/c for Au+Au collisions at sqrt((s)NN)=200 GeV. The observed anisotropy shows a gradual decrease for 3≲p(T)≲7-10 GeV/c, but remains positive beyond 10 GeV/c. The magnitude of this anisotropy is underpredicted, up to at least ∼10 GeV/c, by current perturbative QCD (PQCD) energy-loss model calculations. An estimate of the increase in anisotropy expected from initial-geometry modification due to gluon saturation effects and fluctuations is insufficient to account for this discrepancy. Calculations that implement a path-length dependence steeper than what is implied by current PQCD energy-loss models show reasonable agreement with the data.
Published: 2010

220. Current prescribing patterns of elastic compression stockings post-deep venous thrombosis

Author: G Roche-Nagle, F Ward, and M Barry
Subjects: Adult, Male, medicine.medical_specialty, Attitude of Health Personnel, Deep vein, Postthrombotic Syndrome, Varicose Ulcer, Young Adult, Postoperative Complications, Patient Education as Topic, Surveys and Questionnaires, medicine, Medical Staff, Hospital, Humans, cardiovascular diseases, Young adult, Aged, Aged, 80 and over, Venous Thrombosis, business.industry, Incidence (epidemiology), Chronic pain, Professional Practice, General Medicine, Middle Aged, medicine.disease, Thrombosis, Venous thrombosis, medicine.anatomical_structure, Anesthesia, Health Care Surveys, Physical therapy, Patient Compliance, Female, Cardiology and Cardiovascular Medicine, Complication, business, Stockings, Compression, Post-thrombotic syndrome
Abstract: Objectives Post-thrombotic syndrome (PTS) is a complication of deep vein thrombosis (DVT) characterized by chronic pain, swelling and heaviness, and may result in ulceration. Elastic compression stockings (ECS) worn daily after DVT appear to reduce the incidence and severity of PTS. The aims of our study were to investigate practices and perceptions of DVT patients and physicians regarding the use of ECS after DVT. Methods Two surveys were conducted. The first was sent to 225 staff and trainee clinicians and the second was administered to 150 DVT patients. Results The results demonstrated that the majority of senior staff (75%) believed that ECS were effective in preventing PTS and in managing venous symptoms. However, this was in contrast with junior trainees (21%) ( P < 0.05). This resulted in only 63% of patients being prescribed ECS post-DVT. There was a lack of consensus as regards the optimal timing of initiation of ECS, duration of therapy and compression strength. Nearly all DVT patients who were prescribed ECS purchased them, 74% wore them daily, and most (61%) reported that ECS relieved swelling and symptoms. Physicians correctly predicted the main reasons for non-compliance, but misjudged the scale of patient compliance with ECS. Conclusions Our findings suggest that there is a lack of consensus among doctors regarding ECS use after DVT and widespread education regarding the latest evidence of the benefit of ECS after DVT.
Published: 2010

221. 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

222. 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

223. Elliptic and hexadecapole flow of charged hadrons in Au+Au collisions at sq.rt(s(NN))=200 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, K, Aoki, Y, Aramaki, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, G, Baksay, L, Baksay, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, S, Belikov, R, Belmont, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J S, Bok, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, P, Christiansen, T, Chujo, P, Chung, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, M, Connors, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, S, Dairaku, I, Danchev, K, Das, A, Datta, G, David, A, Denisov, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, D, Dutta, S, Edwards, Y V, Efremenko, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, H, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-A, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, J, Hanks, R, Han, E P, Hartouni, E, Haslum, R, Hayano, M, Heffner, S, Hegyi, T K, Hemmick, T, Hester, X, He, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, J, Ide, Y, Ikeda, K, Imai, M, Inaba, D, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, D, Ivanischev, B V, Jacak, J, Jia, J, Jin, B M, Johnson, K S, Joo, D, Jouan, D S, Jumper, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, J H, Kang, J, Kapustinsky, K, Karatsu, D, Kawall, M, Kawashima, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, B I, Kim, D H, Kim, D J, Kim, E J, Kim, E, Kim, S H, Kim, Y J, Kim, E, Kinney, K, Kiriluk, A, Kiss, E, Kistenev, L, Kochenda, B, Komkov, M, Konno, J, Koster, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K B, Lee, K, Lee, K S, Lee, M J, Leitch, M A L, Leite, E, Leitner, B, Lenzi, P, Liebing, L A, Linden Levy, T, Liska, A, Litvinenko, H, Liu, M X, Liu, X, Li, B, Love, R, Luechtenborg, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, A C, Mignerey, P, Mikes, K, Miki, A, Milov, M, Mishra, J T, Mitchell, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, R, Nouicer, A S, Nyanin, E, O'Brien, S X, Oda, C A, Ogilvie, K, Okada, M, Oka, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, I H, Park, J, Park, S K, 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, Proissl, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, C A, Rosen, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, P, Ruzicka, B, Sahlmueller, N, Saito, T, Sakaguchi, K, Sakashita, V, Samsonov, S, Sano, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunecka, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, N A, Sparks, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, M, Togawa, A, Toia, L, Tomásek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, J P, Wood, C L, Woody, R M, Wright, M, Wysocki, W, Xie, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, G R, Young, I, Younus, Z, You, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, and L, Zolin
Abstract: Differential measurements of the elliptic (v(2)) and hexadecapole (v(4)) Fourier flow coefficients are reported for charged hadrons as a function of transverse momentum (p(T)) and collision centrality or number of participant nucleons (N(part)) for Au+Au collisions at sq.rt(s(NN))=200 GeV. The v(2,4) measurements at pseudorapidity |η|≤0.35, obtained with four separate reaction-plane detectors positioned in the range 1.0|η|3.9, show good agreement, indicating the absence of significant Δη-dependent nonflow correlations. Sizable values for v(4)(p(T)) are observed with a ratio v(4)(p(T),N(part))/v(2)(2)(p(T),N(part))≈0.8 for 50≲N(part)≲200, which is compatible with the combined effects of a finite viscosity and initial eccentricity fluctuations. For N(part)≳200 this ratio increases up to 1.7 in the most central collisions.
Published: 2010

224. Double-helicity dependence of jet properties from dihadrons in longitudinally polarizedp+pcollisions ats=200 GeV

Author: J. Chiba, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Masashi Kaneta, David D'Enterria, Takao Sakaguchi, C. Klein-Boesing, B. Azmoun, M. B. Deaton, A. Král, M. J. Kweon, C. Pinkenburg, A. D. Frawley, T. Tabaru, A. Kiss, I. Tserruya, Tadaaki Isobe, D. E. Fields, Y. Onuki, Y. Tanaka, Yu. Efremenko, S. Huang, Jan Rak, M. Stepanov, R. Lacey, G. Roche, S. P. Sorensen, Robert F. Hobbs, V. Singh, R. Granier de Cassagnac, S. H. Aronson, A. Adare, M. N. Wagner, Z. Yasin, P. L. McGaughey, B. V. Jacak, W. Holzmann, M. Oka, Dylan Walker, M. Chiu, Henner Buesching, K. A. Drees, Y. J. Mao, A. Dion, K. S. Sim, Y. Nakamiya, V. Dzhordzhadze, S. Kametani, T. Horaguchi, Y. Kwon, R. Yang, H. Hiejima, M. McCumber, Anne Marie Sickles, K. Imai, Seong H. Kim, M. Ouchida, N. Means, J. Asai, Debashish Pal, S. Sawada, J. H. Kang, J. S. Haggerty, G. R. Young, Marcus Hohlmann, F. Staley, L. Baksay, J. G. Lajoie, G. Baksay, A. Romana, Atsushi Taketani, A. Enokizono, P. Liebing, T. Hachiya, J. Ying, A. Franz, A. V. Kazantsev, C. R. Cleven, Ajit Kumar Mohanty, C. Haegemann, Y. Inoue, T. A. Shibata, Alexander Milov, I. Nakagawa, Maya Hachiya Shimomura, Y. I. Makdisi, Shingo Sakai, T. Engelmore, T. Sato, R. A. Soltz, Y. Fukao, Tae-Yeon Lee, A. Shevel, Martin Purschke, C. M. Camacho, Prashant Shukla, L. Tomášek, P. Mikeš, R. Pak, W. A. Zajc, C. Silvestre, T. Hester, T. Kempel, Dong-Hun Kim, O. Drapier, Frank Ellinghaus, E. R. Kinney, I. J. Choi, D. P. Morrison, S. Campbell, A. Kravitz, H. Pei, S. F. Pate, R. Vértesi, N. Kamihara, Marisilvia Donadelli, D. Isenhower, A. Toia, V. E. Semenov, D. Kotchetkov, J. Zimányi, V. Baublis, R. Armendariz, O. Dietzsch, A. Denisov, E. T. Atomssa, H. Valle, Y. S. Lai, V. Bumazhnov, M. P. Comets, Tatsuya Chujo, V. Cianciolo, M. J. Tannenbaum, T. C. Awes, Kyoichiro Ozawa, T. Liška, X. He, O. O. Omiwade, H. Al-Bataineh, Hiroaki Ohnishi, K. B. Lee, A. Yu. Semenov, L. Mašek, A. Morreale, M. Grosse Perdekamp, Andry Malala Rakotozafindrabe, L. Aphecetche, K. O. Eyser, A. K. Purwar, K. Fujiwara, H. Torii, C. L. Woody, A. Berdnikov, J. Gosset, J. T. Mitchell, Y. Tomita, Jun Kikuchi, Kazuyoshi Kurita, A. Drees, V-N. Tram, N. Grau, Dipanwita Dutta, N. N. Ajitanand, T. Niita, D. Mukhopadhyay, Sergey Fokin, S. Rembeczki, K. Dehmelt, R. Tanabe, D. Layton, Z. Fraenkel, Jen-Chieh Peng, R. Seidl, Vladislav Manko, K. Das, Minghui Liu, J. L. Charvet, J. Kubart, J. E. Frantz, V. Papavassiliou, K. Sakashita, Motoi Inaba, V. Peresedov, Julia Velkovska, Sébastien Gadrat, Takahiro Nakamura, M. Slunečka, H. Liu, M. K. Lee, R. K. Choudhury, Xiong Wang, Eva Haslum, Dong Jo Kim, E. P. Hartouni, B. Lenzi, Kenneth Francis Read, T. E. Miller, M. Kurosawa, J. Egdemir, W. C. Chang, Osamu Jinnouchi, Jason Kamin, E. J. Desmond, D. Roach, S. Yokkaichi, K. M. Kijima, S. Belikov, K. Shoji, M. Mitrovski, Susumu Oda, B. Meredith, H. W. Van Hecke, A. Durum, J. Koster, I. V. Sourikova, Charles Maguire, S. Afanasiev, A. Ster, T. L. Thomas, A. Veicht, S. P. Stoll, M. Rosati, Rushan Han, P. Chung, J. Imrek, M. Togawa, J. Park, V. S. Pantuev, S. Butsyk, Vladimir Samsonov, J. Newby, H. A. Gustafsson, M. Wysocki, S. Bathe, Johannes Peter Wessels, Agneta Oskarsson, Ryugo S. Hayano, S. S.E. Rosendahl, G. Bunce, K. Yamaura, E. Kistenev, Xingguo Li, M. Gonin, W. S. Emam, S. Batsouli, H. Kanou, Y. Tsuchimoto, Y. Riabov, Y. Berdnikov, Y. Akiba, P. W. Stankus, M. Mishra, D. Hornback, A. Churyn, Kenta Shigaki, H. Masui, A. K. Dubey, Taku Gunji, H. Gong, J. Seele, M. Nguyen, M. Heffner, D. Jouan, A. A. Vinogradov, C. Zhang, C. Vale, I. E. Yushmanov, Junji Tojo, F. Kajihara, S. Nagamiya, A. Hadj Henni, Alexei Khanzadeev, Tamas Ferenc Csorgo, H. Harada, J. L. Nagle, Vaclav Vrba, Klaus Johannes Reygers, A. S. Nyanin, A. Taranenko, E. Stenlund, B. S. Chang, Kazushi Miki, Rachid Nouicer, H. Delagrange, Jiangyong Jia, Y. Goto, D. Winter, H. Sakata, D. Yu Peressounko, A. A. Bickley, P. Tarján, A. Sukhanov, K. Okada, H. Pereira, Y. Morino, Christine Angela Aidala, J. Klay, Brajesh K. Singh, C. A. Ogilvie, P. Ružička, T. K. Hemmick, B. Sahlmueller, John Hill, H. En'yo, M. J. Leitch, Beomkyu Kim, K. Boyle, S. Zhou, Yasuo Miake, B. Love, Wei Xie, Steven E. Skutnik, T. V. Moukhanova, S. D. Rolnick, L. Kochenda, Viktor Riabov, A. G. Litvinenko, F. Matathias, Toru Sugitate, L. D. Isenhower, Senta Greene, M. I. Nagy, M. Issah, M. D. Malik, E. Vznuzdaev, A. Kozlov, R. Seto, K. Haruna, A. T. Basye, Kensuke Homma, B. E. Norman, B. Fadem, H. Qu, S. Takagi, E. O'Brien, K. N. Barish, P. Constantin, S. Chernichenko, Hideki Hamagaki, K. Aoki, M. L. Brooks, G. David, François Fleuret, B. Bassalleck, H. Iinuma, T. Ichihara, M. Konno, Matthew G. Reuter, Takahiro Fusayasu, A. P.T. Palounek, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, S. N. White, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, P. A. Rukoyatkin, E. H. Kim, I. Ravinovich, Y. Nagata, Y. L. Yamaguchi, M. Bai, B. Komkov, E. C. Aschenauer, Norio Saito, M. A. L. Leite, R. Bennett, J. S. Kapustinsky, M. Finger, S. Dairaku, V. Babintsev, O. Zaudtke, G. S. Kyle, James Alexander, M. Virius, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, A. Glenn, Alexandre Lebedev, D. M. Lee, Herve Borel, D. Lynch, K. Kiriluk, V. L. Rykov, T. Dahms, K. S. Joo, S. Esumi, D. Sharma, Saskia Mioduszewski, R. Ichimiya, J. Jin, E. M. Takagui, C. Baumann, M. Naglis, C. P. Singh, C. L. Silva, B. M. Johnson, A. Isupov, C. Suire, Masayasu Ishihara, J. Sziklai, Susumu Sato, Brian Cole, R. S. Towell, I. Garishvili, Akio Kiyomichi, F. Wei, A. Deshpande, N. Kurihara, C. Y. Chi, Y. Watanabe, I. Younus, A. Soldatov, D. Kawall, K. Tanida, H. Themann, V. I. Kochetkov, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, Alberto Baldisseri, and Mate Csanad
Subjects: Physics, Nuclear and High Energy Physics, Angular momentum, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Drell–Yan process, 01 natural sciences, Helicity, Baryon, Nuclear physics, Total angular momentum quantum number, 0103 physical sciences, Proton spin crisis, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, Spin (physics)
Abstract: It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized p + p collisions. Analogous effects are also expected for dijet production. If confirmed by experiment, this hypothesis, which is based on semiclassical arguments, could lead to a new approach for studying the contributions of orbital angular momentum to the proton spin. We report the first measurement of the double-helicity dependence of the dijet transverse momentum in longitudinally polarized p + p collisions at root s = 200 GeV from data taken by the PHENIX experiment in 2005 and 2006. The analysis deduces the transverse momentum of the dijet from the widths of the near-and far-side peaks in the azimuthal correlation of the dihadrons. When averaged over the transverse momentum of the triggered particle, the difference of the root mean square of the dijet transverse momentum between like-and unlike-helicity collisions is found to be -37 +/- 88(stat) +/- 14(sys)t MeV/c.
Published: 2010

225. Trends in Yield and Azimuthal Shape Modification in Dihadron Correlations in Relativistic Heavy Ion Collisions

Author: Alice Mignerey, C. Baumann, J. L. Charvet, Takao Sakaguchi, S. P. Sorensen, C. L. Woody, A. Berdnikov, S. Dairaku, S. Kametani, C. P. Singh, O. Zaudtke, S. N. White, Senta Greene, M. Kurosawa, C. Klein-Boesing, O. Chvala, M. Virius, Y. Onuki, Johannes Peter Wessels, B. M. Johnson, Zvi Hirsh Citron, Y. Tanaka, Seong H. Kim, A. Isupov, C. Suire, A. T. Basye, S. Hegyi, B. Fadem, E. O'Brien, K. Watanabe, K. Shoji, X. He, L. Baksay, A. D. Frawley, C. H. Chen, S. Bathe, Jan Rak, R. Lacey, K. Nakano, J. G. Lajoie, M. Rosati, S. Huang, W. E. Sondheim, Agneta Oskarsson, A. Glenn, I. Ravinovich, D. Ivanischev, J. Sziklai, P. Chung, J. Imrek, B. Komkov, P. W. Stankus, J. T. Mitchell, Y. Berdnikov, Y. Aramaki, V. Peresedov, I. V. Sourikova, I. J. Choi, A. Kravitz, Alexei Khanzadeev, P. A. Rukoyatkin, R. Granier de Cassagnac, A. Adare, H. Pei, Vladimir Samsonov, M. Bai, R. A. Soltz, H. Borel, E. Stenlund, Sung Keun Park, W. A. Zajc, W. Holzmann, Charles Maguire, Brian Cole, T. Ichihara, A. A. Vinogradov, M. Mishra, S. Nagamiya, J. Koster, A. Datta, M. Naglis, Takahiro Fusayasu, V. Baublis, Jiangyong Jia, Y. Goto, C. L. Silva, M. Grosse Perdekamp, M. E. Connors, Tamas Ferenc Csorgo, Kiyoshi Tanida, E. Kistenev, A. Denisov, V. Cianciolo, N. N. Ajitanand, Norio Saito, Y. Tomita, M. A. L. Leite, Maya Hachiya Shimomura, V. S. Pantuev, Zhiying You, R. Seidl, Vladislav Manko, C. A. Ogilvie, M. Slunečka, R. Bennett, S. Batsouli, M. Kawashima, Alexander Malakhov, R. S. Towell, Vaclav Vrba, Klaus Johannes Reygers, Mate Csanad, D. Silvermyr, H. Masui, A. K. Dubey, A. A. Bickley, Kisung Lee, Sergey Fokin, Taku Gunji, H. Gong, J. Seele, M. Finger, T. K. Hemmick, Takahiro Nakamura, M. I. Nagy, M. Gonin, D. Watanabe, J. M. Durham, Yasuo Miake, I. Tserruya, Yu. Efremenko, V. Singh, B. Love, J. L. Nagle, J. Hamblen, M. D. Malik, Y. I. Makdisi, Jongmin Lee, Masayasu Ishihara, E. Vznuzdaev, I. Garishvili, F. Wei, L. Kochenda, M. Issah, Laurent Bernard Aphecetche, Kyeongpil Lee, J. Ide, A. Sukhanov, F. Kajihara, Rui Wei, Peter Christiansen, D. Winter, D. Yu Peressounko, S. Belikov, Emily D. Richardson, H. Pereira, Susumu Oda, A. Durum, R. Belmont, J. S. Kapustinsky, Anne Marie Sickles, A. G. Litvinenko, F. Staley, L. S. Zolin, W. J. Park, Christopher Rosen, P. D. Barnes, A. Yanovich, A. Kozlov, S. Butsyk, M. Ouchida, N. Means, J. Asai, G. R. Young, Marisilvia Donadelli, V. Bumazhnov, V. Babintsev, T. V. Moukhanova, Y. Morino, T. Kempel, Dong-Hun Kim, D. Kawall, H. Themann, K. Okada, M. J. Tannenbaum, D. Lynch, D. S. Jumper, K. A. Drees, C. Vale, H. A. Gustafsson, A. Hadj Henni, G. S. Kyle, K. Sakashita, R. Vértesi, V. L. Rykov, T. Dahms, Catherine Micaela Silvestre, K. Yamaura, O. Dietzsch, E. T. Atomssa, H. Valle, H. Torii, R. Seto, K. Haruna, B. Meredith, John Hill, C. Zhang, Shingo Sakai, S. Zhou, Andry Malala Rakotozafindrabe, B. S. Chang, Christine Angela Aidala, J. Klay, K. S. Joo, B. Sahlmueller, Beomkyu Kim, K. Boyle, H. En'yo, J. Murata, Y. Nakamiya, Y. J. Mao, Minghui Liu, Wei Xie, James Alexander, C. Y. Chi, Yasutada Akiba, Dipanwita Dutta, D. Mukhopadhyay, P. Ružička, A. Baldisseri, I. Danchev, R. Tanabe, Toru Sugitate, S. D. Rolnick, D. Layton, M. J. Leitch, K. B. Lee, S. Rembeczki, Jason Kamin, A. Kiss, Henner Buesching, R. Averbeck, Gerd Joachim Kunde, Byung-Sik Hong, K. N. Barish, Julia Velkovska, David D'Enterria, T. L. Thomas, A. Bazilevsky, G. Baksay, I. Shein, Hongfang Liu, D. E. Fields, S. P. Stoll, Viktor Riabov, J. H. Kang, Jason Newby, W. C. Chang, M. Heffner, Ajit Kumar Mohanty, Kenneth Francis Read, J. E. Frantz, T. A. Shibata, Steve Edwards, R. P. Pisani, S. S.E. Rosendahl, K. Sedgwick, S. Sano, T. Sato, Ryugo S. Hayano, François Fleuret, Alexandre Lebedev, B. V. Jacak, D. M. Lee, K. Das, Rushan Han, K. S. Sim, V. Dzhordzhadze, G. Bunce, Marcus Hohlmann, D. Roach, K. M. Kijima, Y. Kwon, J. S. Haggerty, A. V. Kazantsev, A. Deshpande, Y. Riabov, S. Esumi, E. P. Hartouni, L. A. Linden Levy, Eunja Kim, M. L. Brooks, A. Churyn, J. P. Wood, E. J. Desmond, J. Jin, Y. Fukao, Kenta Shigaki, D. Isenhower, M. McCumber, A. Toia, L. Mašek, M. Nguyen, Y. J. Kim, K. Kiriluk, P. Rosnet, K. O. Eyser, D. Jouan, A. K. Purwar, K. Fujiwara, D. Sharma, R. Yang, H. Iinuma, E. M. Takagui, T. Hester, M. Togawa, A. S. Nyanin, E. Vazquez-Zambrano, J. Park, Xingguo Li, F. Matathias, D. Kotchetkov, Y. L. Yamaguchi, R. Ichimiya, E. H. Kim, R. Pak, L. Tomášek, E. Leitner, Alexander Milov, I. Nakagawa, R. Luechtenborg, Y. Watanabe, A. P.T. Palounek, T. Engelmore, T. Niita, Rachid Nouicer, M. Proissl, Kensuke Homma, N. Kamihara, N. A. Sparks, I. Younus, P. Mikeš, H. Qu, K. Imai, Y. Tsuchimoto, P. Constantin, S. Chernichenko, H. W. Van Hecke, B. Azmoun, Kazuyoshi Kurita, A. Soldatov, J. Hanks, A. Král, M. J. Kweon, K. I. Hahn, O. Drapier, Frank Ellinghaus, B. Bassalleck, V-N. Tram, N. Grau, A. Drees, I. E. Yushmanov, E. R. Kinney, M. Konno, T. C. Awes, Kyoichiro Ozawa, T. Liška, J. S. Bok, Jun Kikuchi, Motoi Inaba, R. M. Wright, Tadaaki Isobe, P. L. McGaughey, M. Chiu, D. P. Morrison, S. Campbell, Y. S. Lai, A. Yu. Semenov, J. Gosset, Hideki Hamagaki, K. Aoki, V. E. Semenov, G. David, Tatsuya Chujo, S. Yokkaichi, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Jen-Chieh Peng, C. Pinkenburg, M. Stepanov, M. Oka, A. Dion, Inkyu Park, Xiong Wang, Dong Jo Kim, Atsushi Taketani, A. Veicht, A. Enokizono, P. Liebing, Tae-Yeon Lee, Martin Purschke, S. Afanasiev, A. Ster, G. Roche, A. Morreale, D. Hornback, Z. Fraenkel, A. Taranenko, Kazushi Miki, T. Horaguchi, Brajesh K. Singh, R. K. Choudhury, S. Tarafdar, Eva Haslum, B. Lenzi, C. M. Camacho, Prashant Shukla, S. F. Pate, H. Al-Bataineh, V. Papavassiliou, S. Sawada, J. Ying, A. Franz, M. Wysocki, P. Tarján, 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), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and 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)
Subjects: Physics, Energy loss, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, FOS: Physical sciences, Parton, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Azimuth, Yield (chemistry), 0103 physical sciences, Heavy ion, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment
Abstract: Fast parton probes produced by hard scattering and embedded within collisions of large nuclei have shown that partons suffer large energy loss and that the produced medium may respond collectively to the lost energy. We present measurements of neutral pion trigger particles at transverse momenta p^t_T = 4-12 GeV/c and associated charged hadrons (p^a_T = 0.5-7 GeV/c) as a function of relative azimuthal angle Delta Phi at midrapidity in Au+Au and p+p collisions at sqrt(s_NN) = 200 GeV. These data lead to two major observations. First, the relative angular distribution of low momentum hadrons, whose shape modification has been interpreted as a medium response to parton energy loss, is found to be modified only for p^t_T < 7 GeV/c. At higher p^t_T, the data are consistent with unmodified or very weakly modified shapes, even for the lowest measured p^a_T. This observation presents a quantitative challenge to medium response scenarios. Second, the associated yield of hadrons opposite to the trigger particle in Au+Au relative to that in p+p (I_AA) is found to be suppressed at large momentum (IAA ~ 0.35-0.5), but less than the single particle nuclear modification factor (R_AA ~0.2)., 427 authors, 6 pages text, 3 figures, 1 table. Submitted to Phys. Rev. Lett. v2 has minor changes in response to PRL referee comments. Plain text data tables for the points plotted in figures are publicly available at http://www.phenix.bnl.gov/papers.html
Published: 2010

226. Dielectron yields in p+d and p+p collisions at 4.9 GeV

Author: Franck Manso, L. Madansky, C. Naudet, David Miller, A. Letessier-Selvon, R.J. Porter, L. S. Schoeder, P. N. Kirk, G. Igo, Robert C. Welsh, A. Yegneswaran, G. Roche, J. Cailiu, B. Luttrell, M. Bougteb, Z.F. Wang, S. Beedoe, L. Heilbronn, J. B. Carroll, Jeffrey Boone Miller, T.J. Hallman, G. Krebs, H. S. Matis, Peter A. Seidl, H. Z. Huang, and W.K. Wilson
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Yield (chemistry), Hadron, Bremsstrahlung, Yield ratio, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Kinetic energy
Abstract: The dielectron yield in p + d and p + p collisions at a beam kinetic energy of 4.9 GeV has been measured using the Dilepton Spectrometer (DLS) at the Bevalac. The measured ratio of the yield in p + d to that in p + p collisions, 1.92±0.06, is in disagreement with the assumptions of model calculations applied to our ealier p +Be data, where it was found that p + n bremsstrahlung dominated other sources. While the measured ratio is consistent with a hadron-like origin of the dielectrons, the contributions of known hadronic decays are smaller than the measured yield from p + p collissions.
Published: 1992

227. Data from: Ectoparasites modify escape behaviour, but not performance, in a coral reef fish

Author: Sandra Binning, Jeffrey I. Barnes, Jaclyn Davies, Patricia R.Y. Backwell, J. Scott Keogh, Dominique G. Roche, Sandra Binning, Jeffrey I. Barnes, Jaclyn Davies, Patricia R.Y. Backwell, J. Scott Keogh, and Dominique G. Roche
Published: 2014
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228. Data from 'Physiological plasticity to water flow habitat in the damselfish, Acanthochromis polyacanthus: linking phenotype to performance'

Author: Sandra Binning, Albert F. H. Ros, David Nusbaumer, Dominique G. Roche, Sandra Binning, Albert F. H. Ros, David Nusbaumer, and Dominique G. Roche
Published: 2014
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229. Data from Binning et al. In review

Author: Sandra Binning, Albert F. H. Ros, David Nusbaumer, Dominique G. Roche, Sandra Binning, Albert F. H. Ros, David Nusbaumer, and Dominique G. Roche
Published: 2014
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230. 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

231. 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

232. 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

233. 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

234. Measurement of Bottom Versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations inp+pCollisions ats=200 GeV

Author: A. Deshpande, C. L. Woody, P. Tarján, A. Berdnikov, D. E. Fields, E. Kistenev, H. Harada, S. Dairaku, A. Yu. Semenov, B. V. Jacak, J. Gosset, Y. Watanabe, M. B. Deaton, H. Pei, Y. Tanaka, O. Zaudtke, M. McCumber, Mate Csanad, F. Staley, L. Baksay, Ajit Kumar Mohanty, C. Silvestre, I. Younus, Tae-Yeon Lee, A. Soldatov, T. A. Shibata, T. Sato, L. Tomáek, I. V. Sourikova, Senta Greene, S. Yokkaichi, Martin Purschke, M. K. Lee, M. Virius, Y. Nakamiya, G. Baksay, K. S. Sim, V. Dzhordzhadze, Y. Kwon, Saskia Mioduszewski, C. A. Ogilvie, D. Isenhower, A. Toia, D. Kotchetkov, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, E. H. Kim, R. Yang, A. T. Basye, David D'Enterria, H. Hiejima, T. K. Hemmick, M. Naglis, A. Morreale, Yasuo Miake, B. E. Norman, C. L. Silva, C. R. Cleven, C. Haegemann, Y. Inoue, B. Fadem, E. O'Brien, R. A. Soltz, M. N. Wagner, M. Rosati, Y. Fukao, N. N. Ajitanand, Y. Ikeda, A. Shevel, Z. Fraenkel, J. G. Boissevain, E. J. Mannel, T. Niita, Masashi Kaneta, T. Hester, K. A. Drees, A. Glenn, R. Tanabe, D. Layton, K. Imai, Masayasu Ishihara, M. Grosse Perdekamp, M. Ouchida, T. Kempel, Dong-Hun Kim, Susumu Sato, R. K. Choudhury, L. Kochenda, C. Pinkenburg, Y. Onuki, N. Means, J. Jin, B. Azmoun, E. M. Takagui, Takahiro Nakamura, J. L. Charvet, D. Kawall, A. Král, M. J. Kweon, J. Asai, K. Tanida, H. Themann, W. C. Chang, M. Stepanov, G. Roche, Steven E. Skutnik, C. Baumann, Y. J. Mao, A. A. Vinogradov, Jan Rak, S. Kametani, T. Horaguchi, V-N. Tram, C. P. Singh, V. I. Kochetkov, N. Grau, G. S. Kyle, B. M. Johnson, Susumu Oda, J. Murata, Herve Borel, D. Lynch, F. Matathias, James Alexander, J. H. Kang, J. S. Haggerty, A. Romana, Kensuke Homma, R. Lacey, R. Granier de Cassagnac, A. Adare, T. E. Miller, M. Kurosawa, A. Isupov, C. Suire, A. Durum, Motoi Inaba, Jiangyong Jia, Y. Goto, R. Averbeck, Byung-Sik Hong, R. Pak, L. Maek, H. Qu, J. Sziklai, Gerd Joachim Kunde, A. Bazilevsky, I. Shein, Shingo Sakai, Rushan Han, T. L. Thomas, Robert F. Hobbs, D. Winter, N. Kamihara, P. Chung, K. Yamaura, Philippe Rosnet, K. O. Eyser, A. K. Purwar, K. Fujiwara, K. Sedgwick, D. Yu Peressounko, P. Constantin, P. Mike, V. L. Rykov, T. Dahms, J. Imrek, K. Das, S. Butsyk, S. Chernichenko, Brian Cole, R. S. Towell, Hideki Hamagaki, K. Aoki, Alberto Baldisseri, Alexandre Lebedev, Vladimir Samsonov, G. David, M. Oka, D. M. Lee, Y. S. Lai, R. Armendariz, E. P. Hartouni, I. Ravinovich, Kazuyoshi Kurita, B. Bassalleck, A. Dion, W. S. Emam, Y. Nagata, I. Garishvili, Akio Kiyomichi, F. Wei, Debashish Pal, K. Kiriluk, A. Drees, M. Bai, Y. L. Yamaguchi, S. Sawada, J. Ying, A. Franz, B. Komkov, M. Konno, J. Kubart, N. Kurihara, H. Kanou, Taku Gunji, H. Gong, Ryugo S. Hayano, J. Seele, Atsushi Taketani, K. Sakashita, H. Liu, F. Kajihara, C. Y. Chi, Anne Marie Sickles, Y. Riabov, Kenta Shigaki, K. Shoji, H. W. Van Hecke, Norio Saito, Tamas Ferenc Csorgo, M. A. L. Leite, J. T. Mitchell, A. Enokizono, H. Delagrange, R. Seidl, M. Nguyen, Vladislav Manko, K. S. Joo, R. Bennett, J. L. Nagle, C. M. Camacho, Prashant Shukla, A. S. Nyanin, P. W. Stankus, M. Slunečka, M. Finger, J. S. Kapustinsky, S. F. Pate, Rachid Nouicer, V. Babintsev, J. Egdemir, S. Belikov, Jason Kamin, S. Zhou, S. Bathe, S. P. Stoll, S. D. Rolnick, Agneta Oskarsson, H. Al-Bataineh, T. Ichihara, G. R. Young, Matthew G. Reuter, Y. Berdnikov, Takahiro Fusayasu, Y. Akiba, O. Dietzsch, C. Vale, B. S. Chang, M. Mishra, Alexander Malakhov, S. S.E. Rosendahl, G. Bunce, B. Love, E. T. Atomssa, H. Valle, S. Nagamiya, V. Papavassiliou, Sébastien Gadrat, D. Sharma, Christine Angela Aidala, J. Klay, R. Ichimiya, K. Dehmelt, Vaclav Vrba, Klaus Johannes Reygers, D. Silvermyr, L. S. Zolin, A. G. Litvinenko, Dipanwita Dutta, Jen-Chieh Peng, W. J. Park, A. Churyn, A. Kiss, M. Mitrovski, P. D. Barnes, A. Yanovich, D. Jouan, Julia Velkovska, Z. Yasin, Henner Buesching, S. N. White, A. Kozlov, R. Seto, K. Haruna, M. Wysocki, Xiong Wang, Zvi Hirsh Citron, Marcus Hohlmann, Dong Jo Kim, Osamu Jinnouchi, K. Nakano, W. E. Sondheim, S. Takagi, D. Ivanischev, Hiroaki Ohnishi, K. B. Lee, K. N. Barish, S. Afanasiev, A. Ster, P. A. Rukoyatkin, A. Veicht, John Hill, I. Tserruya, Yu. Efremenko, V. Singh, P. Ruička, P. Liebing, D. Hornback, Toru Sugitate, L. D. Isenhower, M. Heffner, M. L. Brooks, A. Taranenko, X. He, O. O. Omiwade, Kazushi Miki, François Fleuret, Brajesh K. Singh, V. Peresedov, Beau Meredith, V. S. Pantuev, J. Koster, Alexander Milov, I. Nakagawa, T. Engelmore, D. Roach, K. M. Kijima, O. Drapier, Frank Ellinghaus, T. Lika, S. Batsouli, H. Masui, A. K. Dubey, Junji Tojo, E. R. Kinney, A. A. Bickley, Hiroyuki Okada, D. P. Morrison, S. Campbell, Eva Haslum, B. Lenzi, K. Okada, B. Sahlmueller, H. En'yo, M. J. Leitch, V. E. Semenov, J. Zimányi, Tatsuya Chujo, Xingguo Li, M. Gonin, A. Sukhanov, H. Pereira, Y. Morino, S. P. Sorensen, Dylan Walker, Seong H. Kim, J. G. Lajoie, T. Hachiya, I. J. Choi, A. Kravitz, Minghui Liu, Kenneth Francis Read, Tadaaki Isobe, P. L. McGaughey, M. Chiu, A. V. Kazantsev, A. Hadj Henni, Maya Hachiya Shimomura, Y. I. Makdisi, M. J. Tannenbaum, H. Torii, D. Mukhopadhyay, S. Rembeczki, J. Chiba, Beomkyu Kim, K. Boyle, T. C. Awes, Kyoichiro Ozawa, Takao Sakaguchi, C. Klein-Boesing, Jun Kikuchi, A. D. Frawley, T. Tabaru, S. Huang, S. H. Aronson, W. Holzmann, Wei Xie, M. I. Nagy, M. Issah, M. D. Malik, E. Vznuzdaev, L. Aphecetche, Johannes Peter Wessels, H. A. Gustafsson, C. Zhang, R. Vértesi, Viktor Riabov, A. P.T. Palounek, S. Esumi, W. A. Zajc, Jason Newby, V. Baublis, A. Denisov, V. Cianciolo, Y. Tomita, J. E. Frantz, Sergey Fokin, E. J. Desmond, M. Togawa, J. Park, Y. Tsuchimoto, I. E. Yushmanov, Alexei Khanzadeev, E. Stenlund, H. Sakata, T. V. Moukhanova, and Charles Maguire
Subjects: Quark, Semileptonic decay, Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Electron, 01 natural sciences, Nuclear physics, Momentum, 0103 physical sciences, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y| e(+/-)K(-/+)X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in p(T). A fixed-order-plus-next-to-leading-log perturbative quantum chromodynamics calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is sigma(bb)=3.2(-1.1)(+1.2)(stat)(-1.3)(+1.4)(syst)mu b.
Published: 2009

235. Gluon-Spin Contribution to the Proton Spin from the Double-Helicity Asymmetry in Inclusiveπ0Production in Polarizedp+pCollisions ats=200 GeV

Author: Yu. Efremenko, Tadaaki Isobe, H. Pei, V. Singh, K. S. Sim, V. Dzhordzhadze, P. Tarján, P. L. McGaughey, Y. Watanabe, M. Chiu, A. Yu. Semenov, J. Gosset, R. Yang, S. Afanasiev, A. Ster, M. Gonin, S. Taneja, B. Azmoun, A. Král, M. J. Kweon, F. Matathias, J. Newby, G. Roche, L. Aphecetche, T. L. Thomas, Kensuke Homma, K. Imai, Tae-Yeon Lee, Martin Purschke, A. Morreale, Z. Fraenkel, A. Sukhanov, H. Pereira, Y. Morino, Senta Greene, R. K. Choudhury, L. Tomášek, V. S. Pantuev, S. Yokkaichi, R. S. Towell, I. Garishvili, F. Wei, K. A. Drees, A. V. Kazantsev, Y. L. Yamaguchi, A. T. Basye, B. Fadem, E. O'Brien, P. Constantin, B. Komkov, S. Chernichenko, K. Sakashita, Ryugo S. Hayano, M. Oka, A. Dion, Jen-Chieh Peng, S. Bathe, D. Hornback, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Johannes Peter Wessels, C. M. Camacho, Prashant Shukla, B. Bassalleck, N. N. Ajitanand, Agneta Oskarsson, Atsushi Taketani, A. Enokizono, P. Liebing, C. Silvestre, Anne Marie Sickles, K. Okada, Youngil Kwon, K. S. Joo, S. F. Pate, Norio Saito, M. A. L. Leite, A. Deshpande, M. Rosati, Y. Riabov, M. Heffner, M. Konno, Taku Gunji, H. Gong, B. Sahlmueller, R. A. Soltz, H. En'yo, M. J. Leitch, Dong Jo Kim, M. I. Nagy, M. Issah, C. Pinkenburg, Marisilvia Donadelli, V. Bumazhnov, J. Seele, Y. Berdnikov, D. Sharma, T. C. Awes, M. D. Malik, C. Y. Chi, R. Ichimiya, Y. Akiba, Kyoichiro Ozawa, T. Liška, A. Taranenko, Kenta Shigaki, Jun Kikuchi, M. Nguyen, Takahiro Nakamura, M. Grosse Perdekamp, J. Egdemir, E. Vznuzdaev, S. P. Sorensen, Dylan Walker, M. Stepanov, Y. Tanaka, Andry Malala Rakotozafindrabe, Takao Sakaguchi, M. Mishra, S. Nagamiya, S. Dairaku, H. Al-Bataineh, X. R. Wang, A. Veicht, F. Kajihara, G. R. Young, Kazushi Miki, J. S. Kapustinsky, Brajesh K. Singh, Susumu Oda, A. Durum, Y. J. Mao, A. S. Nyanin, Seong H. Kim, T. Horaguchi, C. Klein-Boesing, K. Das, Christophe Pierre Suire, Alexander Milov, Rachid Nouicer, C. Baumann, I. Nakagawa, V. Babintsev, S. Kametani, Y. Nakamiya, Vaclav Vrba, Klaus Johannes Reygers, Minghui Liu, R. Tanabe, D. Layton, A. A. Vinogradov, T. Engelmore, Kenneth Francis Read, Y. Onuki, E. J. Desmond, J. G. Lajoie, Jason Kamin, A. D. Frawley, A. Hadj Henni, J. H. Kang, O. Zaudtke, Jan Rak, J. S. Haggerty, E. P. Hartouni, C. P. Singh, G. S. Kyle, O. Drapier, Frank Ellinghaus, K. Yamaura, F. Staley, L. Baksay, E. R. Kinney, Jiangyong Jia, R. Lacey, B. M. Johnson, Y. Goto, Beomkyu Kim, K. Boyle, S. Huang, R. Granier de Cassagnac, A. Adare, I. J. Choi, Wei Xie, A. Kravitz, S. P. Stoll, D. P. Morrison, S. Campbell, Charles Maguire, James Alexander, C. L. Woody, A. Berdnikov, S. Butsyk, K. B. Lee, V. Papavassiliou, D. E. Fields, D. Winter, D. Yu Peressounko, I. Younus, Y. S. Lai, M. Togawa, A. Kiss, S. Zhou, W. Holzmann, Maya Hachiya Shimomura, H. Liu, R. Averbeck, B. V. Jacak, Byung-Sik Hong, A. Bazilevsky, M. Virius, V. E. Semenov, K. Shoji, S. S.E. Rosendahl, Tatsuya Chujo, E. Kistenev, M. McCumber, A. Isupov, J. Sziklai, Y. I. Makdisi, D. Roach, G. Baksay, K. M. Kijima, Alexandre Lebedev, Hiroyuki Okada, D. M. Lee, I. V. Sourikova, G. Bunce, A. Soldatov, Henner Buesching, S. D. Rolnick, J. L. Charvet, Brian Cole, W. C. Chang, Rushan Han, Eva Haslum, B. Lenzi, A. Churyn, S. Sawada, J. Ying, A. Franz, A. Glenn, M. Kurosawa, Xingguo Li, Vladimir Samsonov, M. J. Tannenbaum, P. W. Stankus, D. Jouan, H. Torii, I. Ravinovich, K. Kiriluk, A. P.T. Palounek, M. Ouchida, M. Naglis, P. Chand, N. Means, J. Asai, R. Pak, D. Mukhopadhyay, S. Rembeczki, C. L. Silva, Marcus Hohlmann, P. Chung, J. T. Mitchell, R. Seidl, E. H. Kim, H. A. Gustafsson, N. Kamihara, J. Imrek, S. E. Williamson, Tamas Ferenc Csorgo, M. Bai, X. He, Shingo Sakai, C. Zhang, Vladislav Manko, M. Slunečka, J. L. Nagle, Kazuyoshi Kurita, P. Ružička, P. Mikeš, V. Peresedov, Masayasu Ishihara, A. Drees, Viktor Riabov, S. Belikov, Ajit Kumar Mohanty, Y. Fukao, T. A. Shibata, S. Esumi, T. Sato, P. Rosnet, K. O. Eyser, A. K. Purwar, O. Dietzsch, W. A. Zajc, V. Baublis, J. Koster, K. Fujiwara, E. T. Atomssa, H. Valle, T. Hester, A. Denisov, V. Cianciolo, Y. Tomita, D. Kawall, K. Tanida, H. Themann, Sergey Fokin, D. Isenhower, C. Vale, B. S. Chang, V. I. Kochetkov, A. Toia, Dipanwita Dutta, J. Jin, R. Bennett, E. M. Takagui, S. Batsouli, L. Mašek, H. Masui, A. K. Dubey, T. Kempel, Dong-Hun Kim, J. Murata, Christine Angela Aidala, J. Klay, T. Niita, Julia Velkovska, Gerd Joachim Kunde, I. Shein, A. A. Bickley, V-N. Tram, H. W. Van Hecke, N. Grau, M. Finger, K. Sedgwick, Motoi Inaba, Alberto Baldisseri, B. Love, Mate Csanad, David D'Enterria, Herve Borel, D. Lynch, A. G. Litvinenko, V. L. Rykov, T. Dahms, A. Kozlov, R. Seto, K. Haruna, K. N. Barish, J. Park, Y. Tsuchimoto, I. E. Yushmanov, Alexei Khanzadeev, E. Stenlund, T. V. Moukhanova, R. Vértesi, J. E. Frantz, M. L. Brooks, C. A. Ogilvie, T. K. Hemmick, M. Wysocki, Yasuo Miake, L. Kochenda, H. Qu, Hideki Hamagaki, K. Aoki, G. David, S. N. White, Zvi Hirsh Citron, K. Nakano, W. E. Sondheim, D. Ivanischev, P. A. Rukoyatkin, B. Meredith, John Hill, Toru Sugitate, François Fleuret, T. Ichihara, Matthew G. Reuter, Takahiro Fusayasu, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, and I. Tserruya
Subjects: Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, General Physics and Astronomy, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Helicity, Nuclear physics, Baryon, Pion, 0103 physical sciences, Proton spin crisis, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: The double helicity asymmetry in neutral pion production for p(T) = 1 to 12 GeV/c was measured with the PHENIX experiment to access the gluon-spin contribution, Delta G, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of mu 2 = 4 GeV2 a next to leading order QCD analysis gives Delta G([0.02,0.3]) = 0.2, with a constraint of -0.7 < Delta G([0.02,0.3]) < 0.5 at Delta chi(2) = 9 (similar to 3 sigma) for the sampled gluon momentum fraction (x) range, 0.02 to 0.3. The results are obtained using predictions for the measured asymmetries generated from four representative fits to polarized deep inelastic scattering data. We also consider the dependence of the Delta G constraint on the choice of the theoretical scale, a dominant uncertainty in these predictions.
Published: 2009

236. 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

237. Measurement of bottom versus charm as a function of transverse momentum with electron-hadron correlations in p + p collisions at square root of s = 200 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, 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, C, Baumann, A, Bazilevsky, S, Belikov, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, 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, Z, Citron, C R, Cleven, B A, Cole, M P, Comets, P, Constantin, M, Csanád, T, Csörgo, 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, 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, S, Esumi, K O, Eyser, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, S, Gadrat, I, Garishvili, 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, H, Hamagaki, R, Han, H, Harada, E P, Hartouni, K, Haruna, E, Haslum, R, Hayano, M, Heffner, T K, Hemmick, T, Hester, X, He, H, Hiejima, J C, Hill, R, Hobbs, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, 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, D, Kawall, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, J, Kikuchi, B I, Kim, D H, Kim, D J, Kim, E, Kim, S H, 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, 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, D M, Lee, K B, Lee, M K, Lee, T, Lee, M J, Leitch, M A L, Leite, B, Lenzi, P, Liebing, T, Liska, A, Litvinenko, H, Liu, M X, Liu, X, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, L, Masek, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, P, Mikes, K, Miki, T E, Miller, A, Milov, S, Mioduszewski, M, Mishra, J T, Mitchell, M, Mitrovski, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, 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, E, O'Brien, S X, Oda, C A, Ogilvie, H, Ohnishi, H, Okada, K, Okada, M, Oka, O O, Omiwade, Y, Onuki, A, Oskarsson, 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, 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, Ruzicka, V L, Rykov, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, K, Sakashita, H, Sakata, V, Samsonov, S, Sato, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, V, Semenov, R, Seto, D, Sharma, I, Shein, A, Shevel, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunecka, 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, Sziklai, T, Tabaru, S, Takagi, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, M, Togawa, A, Toia, J, Tojo, L, Tomásek, Y, Tomita, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, 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, 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
Abstract: The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y|0.35 in p+p collisions at square root of s=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range 2pT7 GeV/c. The ratio of the yield of electrons from bottom to that from charm is presented. The ratio is determined using partial D/D--e(+/-)K(-/+)X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in pT. A fixed-order-plus-next-to-leading-log perturbative quantum chromodynamics calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is sigma(bb)=3.2(-1.1)(+1.2)(stat)(-1.3)(+1.4)(syst)mub.
Published: 2009

238. 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

239. Inclusive cross section and double helicity asymmetry forπ0production inp+pcollisions ats=62.4 GeV

Author: P. Rosnet, V. Singh, P. Liebing, Maya Hachiya Shimomura, K. O. Eyser, A. K. Purwar, K. Fujiwara, Y. I. Makdisi, R. A. Soltz, H. Borel, A. Deshpande, Y. Fukao, K. N. Barish, Anne Marie Sickles, A. Yu. Semenov, B. Azmoun, A. Král, M. J. Kweon, M. Grosse Perdekamp, T. Hester, J. Gosset, J. T. Mitchell, R. Seidl, Vladislav Manko, A. V. Kazantsev, M. Slunečka, S. Belikov, C. Vale, F. Matathias, Kensuke Homma, B. S. Chang, Christine Angela Aidala, J. Klay, Y. Tanaka, P. Constantin, S. Chernichenko, J. L. Charvet, A. P.T. Palounek, B. Bassalleck, S. Sawada, E. H. Kim, M. Konno, H. W. Van Hecke, Y. Nakamiya, J. Ying, A. Franz, A. Berdnikov, G. R. Young, R. S. Towell, I. Garishvili, F. Wei, G. Baksay, Alexei Khanzadeev, E. Stenlund, K. Sakashita, S. Esumi, H. Liu, M. L. Brooks, X. He, W. A. Zajc, S. P. Sorensen, K. A. Drees, Youngil Kwon, L. Baksay, J. Egdemir, Christophe Pierre Suire, Alexander Milov, M. Oka, A. Dion, V-N. Tram, N. Grau, S. Bathe, S. Dairaku, K. Shoji, M. J. Tannenbaum, V. Baublis, Hiroyuki Okada, Dylan Walker, A. Denisov, V. Cianciolo, I. Nakagawa, T. Engelmore, Y. L. Yamaguchi, Y. Tomita, B. Komkov, M. Kurosawa, Charles Maguire, Marisilvia Donadelli, V. Bumazhnov, Jason Kamin, A. Hadj Henni, Sergey Fokin, Agneta Oskarsson, V. Peresedov, T. C. Awes, T. Liška, Norio Saito, Atsushi Taketani, M. A. L. Leite, P. W. Stankus, O. Drapier, Frank Ellinghaus, Y. Berdnikov, H. Torii, E. R. Kinney, T. V. Moukhanova, I. Younus, Jun Kikuchi, Andry Malala Rakotozafindrabe, S. P. Stoll, A. Enokizono, Y. Akiba, J. Koster, D. E. Fields, M. Mishra, Eva Haslum, B. Lenzi, Motoi Inaba, K. S. Sim, Tae-Yeon Lee, D. P. Morrison, E. J. Desmond, S. Campbell, V. Dzhordzhadze, S. Nagamiya, J. S. Kapustinsky, Y. Watanabe, K. Das, M. Togawa, J. Park, B. V. Jacak, D. Winter, D. Yu Peressounko, Seong H. Kim, E. Kistenev, S. S.E. Rosendahl, Martin Purschke, J. G. Lajoie, O. Dietzsch, V. Babintsev, Minghui Liu, S. Batsouli, H. Masui, R. Tanabe, D. Layton, A. Soldatov, S. Afanasiev, Beomkyu Kim, K. Boyle, V. E. Semenov, C. Y. Chi, Tatsuya Chujo, I. V. Sourikova, H. A. Gustafsson, Vaclav Vrba, Klaus Johannes Reygers, E. T. Atomssa, S. N. White, R. Yang, Y. Tsuchimoto, G. Bunce, E. P. Hartouni, Wei Xie, P. Chung, M. McCumber, Mate Csanad, Kenneth Francis Read, A. K. Dubey, H. Valle, A. A. Bickley, A. Ster, J. Imrek, T. L. Thomas, G. S. Kyle, M. Wysocki, C. Zhang, James Alexander, Jen-Chieh Peng, D. Mukhopadhyay, S. Rembeczki, I. E. Yushmanov, O. Zaudtke, R. Vértesi, P. Tarján, P. Ružička, Dipanwita Dutta, Tadaaki Isobe, S. Yokkaichi, R. Averbeck, Byung-Sik Hong, J. Newby, G. Roche, A. Bazilevsky, A. Kiss, K. Imai, W. C. Chang, A. Churyn, P. L. McGaughey, Viktor Riabov, Alexandre Lebedev, D. Jouan, A. Morreale, H. Pei, Julia Velkovska, C. Baumann, S. Kametani, B. Love, M. Chiu, D. M. Lee, Z. Fraenkel, C. M. Camacho, Prashant Shukla, Ryugo S. Hayano, Y. Onuki, J. E. Frantz, I. J. Choi, A. Kravitz, Henner Buesching, C. L. Woody, R. Pak, K. Kiriluk, M. Rosati, David D'Enterria, N. N. Ajitanand, C. P. Singh, Zvi Hirsh Citron, D. Hornback, K. Nakano, Dong Jo Kim, M. Heffner, B. M. Johnson, R. K. Choudhury, S. F. Pate, Jan Rak, Y. Riabov, Rushan Han, Ajit Kumar Mohanty, N. Kamihara, T. A. Shibata, R. Lacey, Takahiro Nakamura, A. G. Litvinenko, A. Taranenko, R. Granier de Cassagnac, Kenta Shigaki, W. E. Sondheim, H. Qu, K. Ozawa, T. Sato, P. Chand, K. S. Joo, A. Adare, Susumu Oda, M. Gonin, M. Virius, Kazushi Miki, Marcus Hohlmann, A. Veicht, A. Isupov, M. Nguyen, Vladimir Samsonov, H. Al-Bataineh, X. R. Wang, Kazuyoshi Kurita, A. A. Vinogradov, D. Ivanischev, A. Durum, Brajesh K. Singh, Hideki Hamagaki, K. Aoki, J. Sziklai, Senta Greene, A. Drees, G. David, P. Mikeš, A. T. Basye, Catherine Micaela Silvestre, Jiangyong Jia, Y. Goto, K. Yamaura, A. Kozlov, R. Seto, P. A. Rukoyatkin, Takao Sakaguchi, T. Ichihara, Brian Cole, M. Naglis, A. S. Nyanin, L. Tomášek, C. L. Silva, V. S. Pantuev, D. Sharma, V. Papavassiliou, C. Klein-Boesing, A. Sukhanov, B. Fadem, D. Isenhower, Matthew G. Reuter, E. O'Brien, Rachid Nouicer, R. Ichimiya, Takahiro Fusayasu, K. Haruna, A. Toia, H. Pereira, A. D. Frawley, Alexander Malakhov, Tamas Ferenc Csorgo, L. Mašek, C. A. Ogilvie, J. L. Nagle, T. K. Hemmick, D. Silvermyr, S. Huang, S. E. Williamson, T. Niita, Masayasu Ishihara, Yasuo Miake, L. S. Zolin, Y. Ikeda, W. J. Park, T. Kempel, Dong-Hun Kim, Taku Gunji, H. Gong, J. Seele, L. Kochenda, M. I. Nagy, Y. Morino, W. Holzmann, P. D. Barnes, A. Yanovich, J. Jin, E. M. Takagui, M. Ouchida, K. Okada, F. Kajihara, B. Sahlmueller, H. En'yo, N. Means, M. J. Leitch, J. Asai, B. Meredith, S. Butsyk, J. G. Boissevain, E. J. Mannel, S. Zhou, A. Baldisseri, S. D. Rolnick, John Hill, Shingo Sakai, Toru Sugitate, M. Issah, M. D. Malik, E. Vznuzdaev, François Fleuret, F. Staley, D. Kawall, A. Glenn, K. Tanida, H. Themann, V. I. Kochetkov, J. Murata, Gerd Joachim Kunde, K. B. Lee, I. Shein, L. Aphecetche, K. Sedgwick, C. Pinkenburg, Johannes Peter Wessels, M. Stepanov, Y. J. Mao, T. Horaguchi, J. H. Kang, J. S. Haggerty, D. Roach, K. M. Kijima, D. Lynch, Y. S. Lai, Xingguo Li, V. L. Rykov, T. Dahms, I. Ravinovich, M. Bai, R. Bennett, M. Finger, I. Tserruya, and Yu. Efremenko
Subjects: Quantum chromodynamics, Physics, Particle physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear Theory, Perturbative QCD, Polarization (waves), 7. Clean energy, 01 natural sciences, Helicity, Asymmetry, Gluon, Nuclear physics, Transverse plane, Proton spin crisis, 0103 physical sciences, Statistical precision, High Energy Physics::Experiment, Relativistic Heavy Ion Collider, Nuclear Experiment, 010306 general physics, media_common
Abstract: The PHENIX experiment presents results from the Relativistic Heavy Ion Collider 2005 run with polarized proton collisions at sqrt(s)=200 GeV, for inclusive {pi}{sup 0} production at midrapidity. Unpolarized cross section results are given for transverse momenta p{sub T}=0.5 to 20 GeV/c, extending the range of published data to both lower and higher p{sub T}. The cross section is described well for p{sub T} 2 GeV/c, by perturbative QCD. Double helicity asymmetries ALL are presented based on a factor of 5 improvement in uncertainties as compared to previously published results, due to both an improved beam polarization of 50%, and to higher integrated luminosity. These measurements are sensitive to the gluon polarization in the proton. Using one representative model of gluon polarization it is demonstrated that the gluon spin contribution to the proton spin is significantly constrained.
Published: 2009

240. Choosing analytic measures1

Author: James G. Roche and Barry D. Watts
Subjects: Sociology and Political Science, Management science, Political science, Political Science and International Relations, Strategic studies
Abstract: (1991). Choosing analytic measures. Journal of Strategic Studies: Vol. 14, No. 2, pp. 165-209.
Published: 1991

241. Low-mass dileptons in pA and AA collisions

Author: P.A. Seidl, S. Beedoe, J. Bystricky, J. Carroll, P. Force, J. Gordon, T. Hallman, G. Igo, P. Kirk, G.F. Krebs, E. Lallier, G. Landaud, A. Letessier-Selvon, L. Madansky, H.S. Matis, D. Miller, J. Miller, C. Naudet, G. Roche, L.S. Schroeder, Z.F. Wang, R.C. Welsh, and A. Yegneswaran
Subjects: Excitation function, Physics, Nuclear and High Energy Physics, Particle physics, Spectrometer, High Energy Physics::Phenomenology, Nuclear Theory, Plasma, Kinetic energy, Nuclear physics, Excited state, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, Low Mass, Excitation
Abstract: The low-mass ( M + e − continuum has not yet been understood even though the large yield has been documented in a number of high-energy hadron-nucleon and hadron-nucleus experiments. In heavy-ion collisions, effects resulting from the presence of the excited nuclear medium are expected. An understanding of dilepton production at excitation energies in the few-GeV range will aid in the interpretation of dilepton production at ultra-relativistic energies, where it may be a probe of the quark-gluon plasma. The objective of the Dilepton Spectrometer (DLS) collaboration at the BEVALAC is to study the production of e + e − pairs in nucleon-nucleon, proton-nucleus and nucleus-nucleus collisions at bombarding kinetic energies between 1 and 5 A · GeV. The transverse momentum distributions, the mass dependence, and the excitation function of dilepton production give information about the production mechanisms.
Published: 1991

242. Neo-adjuvant chemoradiotherapy in advanced rectal carcinoma: a note of caution

Author: D M, Fanning, R S, Prichard, G, Roche-Nagle, D, McNamara, and J, Deasy
Subjects: Male, Fatal Outcome, Rectal Neoplasms, Humans, Fluorouracil, Adenocarcinoma, Middle Aged, Neoadjuvant Therapy
Abstract: Rectal cancer remains a major source of morbidity and mortality with its prognosis relating directly to the initial stage of the disease at presentation. This report highlights the potentially serious morbidity and mortality, which may be associated with neo-adjuvant chemoradiotherapy in advanced rectal cancer, emphasising the need for thorough discussion with patients on the risks and benefits of such treatment.
Published: 2008

243. 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

244. Onset ofπ0Suppression Studied inCu+CuCollisions atsNN=22.4, 62.4, and 200 GeV

Author: M. J. Tannenbaum, H. Torii, D. Mukhopadhyay, S. Rembeczki, S. P. Sorensen, Dylan Walker, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, Andry Malala Rakotozafindrabe, S. Dairaku, Charles Maguire, Seong H. Kim, R. Tanabe, D. Layton, J. G. Lajoie, T. Hachiya, I. J. Choi, A. Kravitz, W. C. Chang, Roy A. Lacey, N. N. Ajitanand, Rushan Han, Takahiro Nakamura, Susumu Oda, D. Lynch, A. Durum, V. L. Rykov, T. Dahms, S. Butsyk, Vladimir Samsonov, Ajit Kumar Mohanty, T. A. Shibata, T. Sato, Catherine Micaela Silvestre, K. Yamaura, O. Zaudtke, Tamas Ferenc Csorgo, E. Kistenev, M. Virius, J. L. Nagle, B. Azmoun, D. Isenhower, Y. Onuki, Hiroaki Ohnishi, K. B. Lee, A. Toia, A. Král, R. Vértesi, M. J. Kweon, M. Gonin, A. Glenn, L. Mašek, A. Sukhanov, H. Pereira, C. M. Camacho, Y. Morino, A. V. Kazantsev, H. Harada, K. O. Eyser, M. Oka, A. K. Purwar, Prashant Shukla, K. Fujiwara, D. Roach, K. M. Kijima, I. Ravinovich, J. Chiba, Y. Nagata, T. Niita, M. Bai, Xingguo Li, A. Dion, G. S. Kyle, Takao Sakaguchi, C. Klein-Boesing, R. Bennett, S. F. Pate, Steven E. Skutnik, D. E. Fields, M. Finger, J. L. Charvet, James Alexander, R. S. Towell, P. Tarján, Atsushi Taketani, A. Enokizono, A. Shevel, A. D. Frawley, T. Tabaru, B. V. Jacak, J. E. Frantz, M. B. Deaton, Tae-Yeon Lee, Martin Purschke, Jan Rak, R. Averbeck, Byung-Sik Hong, K. A. Drees, H. Al-Bataineh, A. Bazilevsky, S. Huang, S. H. Aronson, T. E. Miller, M. Naglis, M. Kurosawa, E. T. Atomssa, M. McCumber, Y. Tanaka, J. T. Mitchell, Philippe Rosnet, M. K. Lee, C. L. Silva, I. Garishvili, Akio Kiyomichi, F. Wei, W. Holzmann, C. A. Ogilvie, Alexei Khanzadeev, T. Hester, R. Granier de Cassagnac, L. Tomášek, T. K. Hemmick, P. Chung, Alexandre Lebedev, D. M. Lee, V. S. Pantuev, A. Adare, L. Baksay, Masayasu Ishihara, Susumu Sato, E. Stenlund, H. Sakata, R. Seidl, Vladislav Manko, H. Qu, J. Imrek, W. S. Emam, K. Das, D. Kotchetkov, N. Kurihara, E. P. Hartouni, K. Kiriluk, H. Pei, F. Staley, H. Kanou, Taku Gunji, H. Gong, J. Seele, M. Slunečka, K. Dehmelt, V. Papavassiliou, Sébastien Gadrat, Robert F. Hobbs, Jen-Chieh Peng, Senta Greene, Junji Tojo, A. T. Basye, P. Mikeš, B. E. Norman, B. Fadem, E. O'Brien, R. A. Soltz, H. Borel, Yasuo Miake, Y. L. Yamaguchi, Xiong Wang, L. Aphecetche, B. Komkov, S. Belikov, Yoichiro Fukao, Dong Jo Kim, A. Morreale, F. Kajihara, K. Okada, M. Grosse Perdekamp, Osamu Jinnouchi, A. Deshpande, Z. Fraenkel, C. Y. Chi, B. Sahlmueller, T. C. Awes, Kyoichiro Ozawa, T. Liška, L. Kochenda, H. En'yo, Jun Kikuchi, Hideki Hamagaki, K. Aoki, T. V. Moukhanova, H. Delagrange, Norio Saito, A. Veicht, M. J. Leitch, G. David, O. Dietzsch, H. Valle, Debashish Pal, C. Vale, B. S. Chang, S. Sawada, V-N. Tram, N. Grau, Johannes Peter Wessels, M. A. L. Leite, Alexander Milov, H. W. Vanhecke, Dipanwita Dutta, J. Ying, A. Franz, I. Nakagawa, Christine Angela Aidala, T. Engelmore, J. Klay, R. K. Choudhury, Y. Watanabe, E. J. Desmond, O. Drapier, Frank Ellinghaus, D. Winter, D. Yu Peressounko, Anne Marie Sickles, Saskia Mioduszewski, E. R. Kinney, Motoi Inaba, I. Younus, K. S. Joo, D. P. Morrison, M. Togawa, S. Campbell, S. Zhou, Minghui Liu, B. Meredith, F. Matathias, Kensuke Homma, Mate Csanad, M. I. Nagy, V. E. Semenov, J. Park, M. Issah, J. Zimányi, A. Baldisseri, Kenneth Francis Read, Tatsuya Chujo, I. Tserruya, A. Soldatov, D. Kawall, K. Tanida, H. Themann, J. S. Kapustinsky, P. Constantin, S. Chernichenko, Yu. Efremenko, M. D. Malik, Julia Velkovska, E. Vznuzdaev, V. Singh, P. Liebing, Y. Tsuchimoto, V. I. Kochetkov, M. Mitrovski, V. Babintsev, H. Liu, R. Pak, B. Bassalleck, G. R. Young, Tadaaki Isobe, J. Murata, E. H. Kim, J. Jin, I. E. Yushmanov, David D'Enterria, M. Konno, K. Shoji, E. M. Takagui, N. Kamihara, M. Wysocki, Gerd Joachim Kunde, I. Shein, C. Baumann, P. L. McGaughey, C. P. Singh, Y. Nakamiya, M. Chiu, M. Rosati, A. Hadj Henni, P. W. Stankus, B. M. Johnson, X. He, O. O. Omiwade, R. Armendariz, Beomkyu Kim, K. Boyle, Kazuyoshi Kurita, K. S. Sim, V. Dzhordzhadze, K. Sedgwick, G. Baksay, V. Peresedov, D. Sharma, R. Ichimiya, M. N. Wagner, A. Isupov, C. Suire, Y. Kwon, Wei Xie, J. Koster, A. Drees, J. Sziklai, R. Yang, H. Hiejima, Brian Cole, A. A. Vinogradov, K. Imai, J. Kubart, S. Batsouli, H. Masui, K. Sakashita, J. Egdemir, Jiangyong Jia, A. K. Dubey, A. A. Bickley, Jason Kamin, S. Takagi, S. P. Stoll, Y. Goto, S. S.E. Rosendahl, G. Bunce, C. R. Cleven, K. N. Barish, C. Haegemann, Y. Inoue, A. Churyn, D. Jouan, T. Kempel, Dong-Hun Kim, M. L. Brooks, B. Love, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, S. Esumi, W. A. Zajc, M. Ouchida, N. Means, J. Asai, V. Baublis, A. Denisov, V. Cianciolo, A. Kiss, Z. Yasin, Henner Buesching, Shingo Sakai, Marcus Hohlmann, Y. Tomita, S. Bathe, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, M. Mishra, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, T. L. Thomas, Sergey Fokin, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, M. Nguyen, A. S. Nyanin, Rachid Nouicer, C. L. Woody, A. Berdnikov, S. D. Rolnick, H. A. Gustafsson, I. V. Sourikova, C. Zhang, P. Ružička, Viktor Riabov, T. Ichihara, Matthew G. Reuter, Takahiro Fusayasu, A. P.T. Palounek, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, S. N. White, Y. J. Mao, S. Kametani, T. Horaguchi, Zvi Hirsh Citron, K. Nakano, J. H. Kang, W. E. Sondheim, J. S. Haggerty, S. Afanasiev, D. Ivanischev, A. Ster, A. Romana, J. Newby, P. A. Rukoyatkin, John Hill, D. Hornback, M. Heffner, Toru Sugitate, L. D. Isenhower, A. Taranenko, François Fleuret, Kazushi Miki, Brajesh K. Singh, Y. S. Lai, Hiroyuki Okada, Eva Haslum, A. Yu. Semenov, B. Lenzi, J. Gosset, S. Yokkaichi, Y. Ikeda, J. G. Boissevain, E. J. Mannel, Masashi Kaneta, C. Pinkenburg, M. Stepanov, G. Roche, Maya Hachiya Shimomura, and Y. I. Makdisi
Subjects: Physics, Energy loss, Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, General Physics and Astronomy, chemistry.chemical_element, Parton, Inelastic scattering, 01 natural sciences, Copper, Spectral line, Nuclear physics, Pion, chemistry, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Jet quenching
Abstract: Neutral pion transverse momentum (p(T)) spectra at midrapidity (|y| less than or similar to 0.35) were measured in Cu + Cu collisions at root s(NN) = 22.4, 62.4, and 200 GeV. Relative to pi(0) yields in p + p collisions scaled by the number of inelastic nucleon-nucleon collisions (N-coll) the pi(0) yields for p(T) greater than or similar to 2 GeV/c in central Cu + Cu collisions are suppressed at 62.4 and 200 GeV whereas an enhancement is observed at 22.4 GeV. A comparison with a jet-quenching model suggests that final state parton energy loss dominates in central Cu + Cu collisions at 62.4 and 200 GeV, while the enhancement at 22.4 GeV is consistent with nuclear modifications in the initial state alone.
Published: 2008

245. 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

246. Gluon-spin contribution to the proton spin from the double-helicity asymmetry in inclusive pi0 production in polarized p+p collisions at [sqrt]s=200 GeV

Author: A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, K, Aoki, L, Aphecetche, 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, C, Baumann, A, Bazilevsky, S, Belikov, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J G, Boissevain, H, Borel, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, P, Chand, B S, Chang, W C, Chang, J-L, Charvet, S, Chernichenko, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, T, Chujo, P, Chung, A, Churyn, V, Cianciolo, Z, Citron, B A, Cole, P, Constantin, M, Csanád, T, Csörgo, T, Dahms, S, Dairaku, K, Das, G, David, A, Denisov, D, d'Enterria, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, A K, Dubey, A, Durum, D, Dutta, V, Dzhordzhadze, Y V, Efremenko, J, Egdemir, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, K O, Eyser, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, 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, A Hadj, Henni, J S, Haggerty, H, Hamagaki, R, Han, E P, Hartouni, K, Haruna, E, Haslum, R, Hayano, M, Heffner, T K, Hemmick, T, Hester, X, He, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, Y, Ikeda, K, Imai, J, Imrek, M, Inaba, D, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, D, Ivanischev, B V, Jacak, J, Jia, J, Jin, B M, Johnson, K S, Joo, D, Jouan, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, J H, Kang, J, Kapustinsky, D, Kawall, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, J, Kikuchi, B I, Kim, D H, Kim, D J, Kim, E, Kim, S H, Kim, E, Kinney, K, Kiriluk, A, Kiss, E, Kistenev, J, Klay, C, Klein-Boesing, L, Kochenda, V, Kochetkov, B, Komkov, M, Konno, J, Koster, A, Kozlov, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, D, Layton, A, Lebedev, D M, Lee, K B, Lee, T, Lee, M J, Leitch, M A L, Leite, B, Lenzi, P, Liebing, T, Liska, A, Litvinenko, H, Liu, M X, Liu, X, Li, B, Love, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, L, Masek, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, P, Mikes, K, Miki, A, Milov, M, Mishra, J T, Mitchell, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, D, Mukhopadhyay, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, T, Niita, R, Nouicer, A S, Nyanin, E, O'Brien, S X, Oda, C A, Ogilvie, H, Okada, K, Okada, M, Oka, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, 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, 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, M, Rosati, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, P, Ruzicka, V L, Rykov, B, Sahlmueller, N, Saito, T, Sakaguchi, S, Sakai, K, Sakashita, V, Samsonov, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, V, Semenov, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, 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, Slunecka, 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, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, S, Taneja, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, M, Togawa, A, Toia, L, Tomásek, Y, Tomita, H, Torii, R S, Towell, V-N, Tram, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, A, Veicht, J, Velkovska, R, Vertesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, D, Walker, X R, Wang, Y, Watanabe, F, Wei, J, Wessels, S N, White, S, Williamson, D, Winter, C L, Woody, M, Wysocki, W, Xie, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, O, Zaudtke, C, Zhang, S, Zhou, and L, Zolin
Abstract: The double helicity asymmetry in neutral pion production for pT=1 to 12 GeV/c was measured with the PHENIX experiment to access the gluon-spin contribution, DeltaG, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of micro2=4 GeV2 a next to leading order QCD analysis gives DeltaG[0.02,0.3]=0.2, with a constraint of -0.7DeltaG[0.02,0.3]0.5 at Deltachi2=9 (approximately 3sigma) for the sampled gluon momentum fraction (x) range, 0.02 to 0.3. The results are obtained using predictions for the measured asymmetries generated from four representative fits to polarized deep inelastic scattering data. We also consider the dependence of the DeltaG constraint on the choice of the theoretical scale, a dominant uncertainty in these predictions.
Published: 2008

247. J/ψProduction insNN=200 GeVCu+CuCollisions

Author: Martin Purschke, A. Shevel, Robert F. Hobbs, D. Kotchetkov, A. Morreale, G. S. Kyle, A. Kiss, Z. Yasin, Z. Fraenkel, James Alexander, R. Averbeck, Byung-Sik Hong, T. Hester, H. Pei, Henner Buesching, C. L. Woody, A. Bazilevsky, Philippe Rosnet, M. Issah, M. D. Malik, E. Vznuzdaev, Youngil Kwon, Alexandre Lebedev, A. Hadj Henni, D. M. Lee, C. R. Cleven, C. Haegemann, Y. Inoue, V-N. Tram, K. Boyle, Debashish Pal, S. Sawada, Marcus Hohlmann, Saskia Mioduszewski, Wei Xie, E. J. Desmond, J. Chiba, A. Deshpande, Motoi Inaba, M. Togawa, J. Park, Dong-Hun Kim, E. H. Kim, Takao Sakaguchi, K. O. Eyser, A. K. Purwar, K. Fujiwara, J. Ying, A. Franz, J. Jin, E. M. Takagui, L. Tomášek, Y. J. Mao, S. P. Sorensen, K. Das, Dylan Walker, J. Egdemir, O. Dietzsch, Y. Tsuchimoto, S. Kametani, V. S. Pantuev, Jason Kamin, C. Klein-Boesing, Tadaaki Isobe, D. E. Fields, J. G. Lajoie, T. Hachiya, L. Aphecetche, C. P. Singh, B. M. Johnson, E. P. Hartouni, S. P. Stoll, H. Valle, Johannes Peter Wessels, I. E. Yushmanov, B. V. Jacak, A. D. Frawley, T. Tabaru, Junji Tojo, J. H. Kang, J. S. Haggerty, A. Romana, S. S.E. Rosendahl, G. Bunce, N. Grau, Mate Csanad, K. Shoji, I. J. Choi, A. Kravitz, M. Gonin, A. Isupov, C. Suire, Hiroyuki Okada, A. Churyn, D. Lynch, Julia Velkovska, Eva Haslum, B. Lenzi, R. Vértesi, S. H. Aronson, K. Okada, B. Sahlmueller, D. Jouan, I. Younus, J. Sziklai, P. L. McGaughey, M. McCumber, H. En'yo, M. J. Leitch, Charles Maguire, H. W. Van Hecke, P. W. Stankus, H. Pereira, X. He, O. O. Omiwade, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, M. Mitrovski, Andry Malala Rakotozafindrabe, K. S. Joo, V. L. Rykov, T. Dahms, M. Rosati, Y. Nakamiya, W. Holzmann, M. Chiu, Brian Cole, David D'Enterria, V. Peresedov, Y. L. Yamaguchi, A. Soldatov, S. Bathe, B. Komkov, Hiroaki Ohnishi, Agneta Oskarsson, M. Wysocki, S. Afanasiev, Maya Hachiya Shimomura, A. Ster, A. A. Vinogradov, S. Esumi, Y. S. Lai, J. E. Frantz, Alexander Milov, I. Nakagawa, R. S. Towell, E. Kistenev, Jiangyong Jia, I. Garishvili, Akio Kiyomichi, P. Tarján, M. N. Wagner, Norio Saito, Y. Berdnikov, Y. Akiba, M. A. L. Leite, J. Newby, M. Mishra, S. Nagamiya, Alexei Khanzadeev, O. Drapier, Frank Ellinghaus, G. Baksay, I. Ravinovich, Y. Goto, Y. I. Makdisi, Steven E. Skutnik, E. Stenlund, Y. Nagata, E. R. Kinney, N. Kurihara, D. P. Morrison, W. A. Zajc, N. N. Ajitanand, H. Sakata, Vaclav Vrba, Klaus Johannes Reygers, D. Hornback, C. A. Ogilvie, H. Harada, T. K. Hemmick, S. Campbell, Yasuo Miake, Roy A. Lacey, Rushan Han, V. E. Semenov, M. Naglis, M. Heffner, J. G. Boissevain, A. Taranenko, J. Zimányi, Masashi Kaneta, C. Y. Chi, M. K. Lee, Tatsuya Chujo, K. Ozawa, K. Dehmelt, S. Batsouli, V. Baublis, A. Denisov, Takahiro Nakamura, Xingguo Li, H. Masui, A. K. Dubey, V. Babintsev, Jen-Chieh Peng, T. Ichihara, V. Cianciolo, L. Kochenda, C. L. Silva, H. Qu, J. T. Mitchell, S. F. Pate, R. Bennett, M. Finger, M. J. Tannenbaum, Kazushi Miki, H. Al-Bataineh, S. Butsyk, A. A. Bickley, M. B. Deaton, Vladimir Samsonov, C. Pinkenburg, Sergey Fokin, T. V. Moukhanova, O. Zaudtke, Y. Tanaka, Minghui Liu, Dong Jo Kim, Susumu Oda, Hideki Hamagaki, K. Aoki, R. Pak, Osamu Jinnouchi, G. David, N. Kamihara, X. R. Wang, Masayasu Ishihara, R. Armendariz, B. Love, M. Virius, D. Mukhopadhyay, S. Rembeczki, M. Stepanov, G. Roche, T. Horaguchi, Susumu Sato, A. Durum, R. Seidl, Kazuyoshi Kurita, Vladislav Manko, M. Slunečka, I. Tserruya, Yu. Efremenko, S. Belikov, A. Drees, V. Singh, V. Papavassiliou, J. Kubart, Sébastien Gadrat, J. Gosset, Catherine Micaela Silvestre, A. Glenn, Tamas Ferenc Csorgo, Kenneth Francis Read, F. Staley, I. V. Sourikova, A. G. Litvinenko, D. Kawall, J. L. Nagle, K. Tanida, Senta Greene, C. Vale, B. S. Chang, Christine Angela Aidala, J. Klay, V. I. Kochetkov, S. Yokkaichi, H. A. Gustafsson, B. E. Norman, J. Murata, M. Ouchida, E. O'Brien, A. Kozlov, R. A. Soltz, H. Borel, J. Asai, Matthew G. Reuter, F. Matathias, Kensuke Homma, Gerd Joachim Kunde, A. V. Kazantsev, R. Seto, M. Grosse Perdekamp, Shingo Sakai, I. Shein, L. Baksay, T. L. Thomas, Takahiro Fusayasu, C. Zhang, Ryugo S. Hayano, P. Constantin, S. Chernichenko, K. Haruna, B. Bassalleck, Y. Riabov, M. Konno, Kenta Shigaki, P. Mikeš, M. Nguyen, A. S. Nyanin, Yoichiro Fukao, Viktor Riabov, T. C. Awes, T. Liška, S. Takagi, D. Winter, D. Yu Peressounko, Jun Kikuchi, K. N. Barish, A. P.T. Palounek, M. L. Brooks, Alexander Malakhov, D. Silvermyr, L. S. Zolin, W. J. Park, P. D. Barnes, A. Yanovich, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, François Fleuret, S. N. White, D. Sharma, B. Azmoun, A. Král, M. J. Kweon, M. Oka, A. Dion, Atsushi Taketani, A. Enokizono, Anne Marie Sickles, G. R. Young, Jan Rak, R. Granier de Cassagnac, A. Adare, K. S. Sim, V. Dzhordzhadze, Y. Watanabe, H. Hiejima, K. Imai, T. A. Shibata, D. Isenhower, A. Toia, L. Mašek, J. L. Charvet, T. E. Miller, E. T. Atomssa, P. Chung, W. S. Emam, H. Kanou, Taku Gunji, H. Gong, J. Seele, F. Kajihara, H. Delagrange, S. Zhou, A. Baldisseri, K. Nakano, W. E. Sondheim, P. A. Rukoyatkin, and Tae-Yeon Lee
Subjects: Physics, Range (particle radiation), Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, Analytical chemistry, General Physics and Astronomy, chemistry.chemical_element, Plasma, Nuclear matter, 7. Clean energy, 01 natural sciences, Copper, Strange matter, chemistry, 0103 physical sciences, Energy density, High Energy Physics::Experiment, Rapidity, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: Yields for J/psi production in Cu+Cu collisions at root s(NN) = 200 GeV have been measured over the rapidity range |y|< 2.2 and compared with results in p+p and Au+Au collisions at the same energy. The Cu+Cu data offer greatly improved precision over existing Au+Au data for J/psi production in collisions with small to intermediate numbers of participants, in the range where the quark-gluon plasma transition threshold is predicted to lie. Cold nuclear matter estimates based on ad hoc fits to d+Au data describe the Cu+Cu data up to N-part similar to 50, corresponding to a Bjorken energy density of at least 1.5 GeV/fm(3).
Published: 2008

248. Interoceanic occurrence of species of Aristocleidus Mueller, 1936 (Monogenoidea: Dactylogyridae) parasitizing the gills of gerreid fishes in the Neotropics

Author: Dominique G. Roche, Edgar F. Mendoza Franco, and Juan Violante-González
Subjects: Gills, Panama, Eugerres plumieri, General Veterinary, biology, Ecology, Aquatic animal, General Medicine, biology.organism_classification, Diapterus, Dactylogyridae, Perciformes, Infectious Diseases, Genus, Platyhelminths, Insect Science, Biological dispersal, Animals, Parasitology, Mexico, Monogenea
Abstract: During investigations of fish parasites in the Neotropics (including the state of Veracruz and the Yucatan Peninsula in the Gulf of Mexico, the Chautengo Lagoon on the Pacific coast of the state of Guerrero in Mexico, and Lake Gatun in the Panama Canal), three monogenoidean (Dactylogyridae) species were found parasitizing the gills of gerreids (Gerreidae): Aristocleidus hastatus Mueller, 1936, was recovered from Eugerres plumieri (Cuvier) and Diapterus auratus Ranzani in Veracruz, from D. auratus and Diapterus rhombeus (Cuvier) in Yucatan, from Eugerres brasilianus (Cuvier) in Panama (all new hosts and geographical records), and from D. peruvianus (Cuvier) and Gerres cinereus (Walbaum) in Guerrero; Aristocleidus lamothei Kritsky and Mendoza-Franco, 2008, was recovered from E. plumieri in Veracruz and from D. rhombeus in Yucatan (new hosts and geographical records), and Aristocleidus sp. was recovered from G. cinereus in Guerrero. Results from this study suggest that species of Aristocleidus exhibit wide host specificity within gerreid fishes and that geminate species within this parasite genus may have originated with the formation of the Isthmus of Panama (3.1 to 3.5 ma). Evidence is also presented suggesting the potential role of the Panama Canal as a passageway allowing the interoceanic dispersal of Aristocleidus species across the isthmus.
Published: 2008

249. Management of low back pain in primary care prior to multidisciplinary functional restoration: a retrospective study of 72 patients

Author: Serge Fanello, G. Roche, Erick Legrand, Jf Huez, Céline Bouton, L. Bontoux, Pierre Rucay, Isabelle Richard, D. Penneau-Fontbonne, Yves Roquelaure, E. Parot-Shinkel, V. Dubus, Épidémiologie en Santé au Travail et Ergonomie (IRSET-ESTER), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Laboratoire d'Ergonomie et d'Épidémiologie en Santé au Travail (LEEST), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM)-Université d'Angers (UA)-Institut de Veille Sanitaire (INVS), Groupe d'Études Remodelage Osseux et bioMatériaux (GEROM), Université d'Angers (UA), and Rubion, Elise
Subjects: Male, Time Factors, [SDV]Life Sciences [q-bio], Anti-Inflammatory Agents, 0302 clinical medicine, Soins primaires, Multidisciplinary approach, Surveys and Questionnaires, Health care, Orthopedics and Sports Medicine, Orthopedic Procedures, Practice Patterns, Physicians', Referral and Consultation, ComputingMilieux_MISCELLANEOUS, Analgesics, Réadaptation à l’effort, Functional restoration, Rehabilitation, Physicians, Family, General Medicine, Middle Aged, Primary care, Low back pain, Antidepressive Agents, 3. Good health, Sick leave, Parcours de soins, Female, France, medicine.symptom, Sick Leave, Adult, Diagnostic Imaging, medicine.medical_specialty, Referral, Lombalgie chronique, 03 medical and health sciences, Lumbar, medicine, Humans, Socioeconomic status, Chronic lower back pain, Physical Therapy Modalities, Retrospective Studies, 030203 arthritis & rheumatology, Primary Health Care, business.industry, Retrospective cohort study, Recovery of Function, Réseau, Radiography, Patient care management, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, Physical therapy, Pain Clinics, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, business, Low Back Pain, 030217 neurology & neurosurgery
Abstract: International audience; ObjectiveChronic low back pain is a major socioeconomic health issue, due to the high direct (healthcare) and indirect (sick leave) costs. The aim of the present study was to describe the primary care management of low back pain patients prior to their inclusion in a multidisciplinary functional restoration network. Methods A descriptive, retrospective, questionnaire-based survey of the general practitioners dealing with 72 low back pain patients. Results Patients had been monitored by their general practitioner for an average of four years, with a mean frequency of eight appointments per year per patient. Ninety-three percent and 60% of the patients had been referred to a rheumatologist and a surgeon, respectively. Ninety-eight percent had had lumbar radiographies, 80% had undergone a computed tomography scan and 64% had undergone magnetic resonance imaging. The most commonly prescribed medications were anti-inflammatories and first- or second-line analgesics. Thirty percent had already received morphine analgesics and 50% had taken antidepressants. Thirty-two percent had undergone lumbar surgery. Physiotherapy was frequently reported and, indeed, 6% of patients had participated in over 100 sessions. Total sick leave averaged 8.25 months over the study’s follow-up period. Conclusion The time interval before referral to a multidisciplinary care team is long and so GPs should be encouraged and helped to organize this process earlier. It is also essential to determine factors which predict progression to chronic LBP.; ObjectifLa lombalgie chronique est un important problème socioéconomique, du fait des multiples actes médicaux et paramédicaux, et des nombreux arrêts de travail qu’elle engendre. Le but de cette étude est de décrire la prise en charge en soins primaires de lombalgiques chroniques, avant leur traitement dans un réseau multidisciplinaire de réadaptation à l’effort.MéthodesÉtude descriptive et rétrospective, réalisée par questionnaire auprès des généralistes de 72 patients traités dans le réseau régional.RésultatsLes patients étaient suivis pour lombalgie depuis en moyenne quatre ans par leur généraliste, avec une fréquence de huit consultations spécifiques par an par patient. Quatre-vingt-treize pour cent des patients avaient vu un rhumatologue et 60 % un chirurgien. Quatre-vingt-dix-huit pour cent des patients ont bénéficié de radiographies lombaires, 80 % d’un scanner et 64 % d’une IRM. Les traitements médicamenteux comportaient préférentiellement des antalgiques de palier 1 ou 2 et des anti-inflammatoires stéroïdiens ou non. Trente pour cent avaient déjà reçu des morphiniques et 50 % des antidépresseurs. Un antécédent de chirurgie lombaire était retrouvé chez un tiers des patients. La kinésithérapie était fréquemment prescrite, avec 6 % des patients ayant eu plus de 100 séances. La durée d’arrêt de travail était en moyenne de 8,25 mois.ConclusionsL’orientation vers un réseau spécialisé est tardive, il paraît important d’aider les généralistes à organiser un recours multidisciplinaire plus précoce pour les lombalgiques chroniques. La recherche des facteurs permettant de prédire, dès la phase précoce de la lombalgie, les patients à risque de chronicisation est également indispensable.
Published: 2008

250. 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

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