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15 results on '"W. A. Zajc"'

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

Author

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

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

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

Published
2009

2. Dilepton mass spectra in p+p collisions at s=200 GeV and the contribution from open charm

Author

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

Subjects
Quantum chromodynamics, Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, 01 natural sciences, Nuclear physics, Yield (chemistry), 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, 010306 general physics, Lepton
Abstract

PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p + p collisions at root s = 200 GeV. The contributions from light meson decays to e(+)e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e(+)e(-) pairs in the mass region below similar to 1 GeV/c(2). The e(+)e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 +/- 39(stat) +/- 142(syst) +/- 200(model) pb. which is consistent with QCD calculations and measurements of single leptons by PHENIX. (C) 2008 Elsevier BV. All rights reserved.

Published
2009

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

Author

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

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

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

Published
2007

4. Coalescence production of H0's in p-A collisions

Author

Brian Cole, M. Moulson, and W. A. Zajc

Subjects
Nuclear physics, Physics, Coalescence (physics), Nuclear and High Energy Physics, Cascade, Rapidity, Production rate
Abstract

The possibility of producing the H-dibaryon (H 0 ) in proton-nucleus collisions is investigated. Quantitative estimates of the H 0 production rate in p-A collisions are obtained using the RQMD cascade model assuming the H 0 's are produced through coalescence of ΛΛ and ΞN pairs. The H 0 rapidity distribution is shown, and the impact of the kinematics of H 0 production in p-A collisions on existing and future experiments is discussed.

Published
1995

5. Intermittency in central collisions of 16O+A at 14.6A GeV/c

Author

S.G. Steadman, M. Sarabura, R. R. Debbe, H. Hamagaki, S. Y. Fung, G.S.F. Stephans, M. J. Tannenbaum, O. Hansen, J. Kang, M. Tanaka, Toru Sugitate, E. Vulgaris, D. R. Beavis, P. Beery, M. Torikoshi, J.W. Olness, Yasuo Miake, J. Engelage, W. A. Zajc, W. A. Watson, J.B. Costales, H.Z. Huang, Ma Bloomer, T. Abbott, P. Vincent, Yuichi Ikeda, P. E. Haustein, C.G. Parsons, L. Grodzins, S. B. Kaufman, Hiroyoshi Sakurai, P. D. Bond, H. E. Wegner, R.J. Morse, R. Seto, J. B. Cumming, D. Alburger, S. Homma, H.J. Crawford, E. Duek, R.J. Ledoux, V. Vutsadakis, D.S. Woodruff, P.J. Lindstrom, M. J. LeVine, S. Katcoff, M. Vient, C. Chasman, B.A. Cole, S. Gushue, Y. Akiba, Y. Y. Chu, Z. Chen, J. H. van Dijk, S. Nagamiya, L. P. Remsberg, and F. Videbaek

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Monte Carlo method, Detector, Charged particle, Bin, law.invention, Nuclear physics, law, Intermittency, Pseudorapidity, Moment (physics), High Energy Physics::Experiment, Nuclear Experiment, Scaling
Abstract

Fluctuations in pseudorapidity distributions of charged particles from central collisions of 16 O+Al and 16 O+Cu at 14.6 A GeV/ c are analyzed using scaled factorial moments. A power-law growth of moments with decreasing bin size is observed down to δη ∼ 0.1. About half the measured signal remains after making corrections based on Monte Carlo calculations with Fritiof and GEANT which include γ-conversions, Dalitz decays and detector effects.

Published
1994

6. Global transverse energy distributions in Si+Al, Au at 14.6A GeV/c and Au+Au at 11.6A GeV/c

Author

J. B. Costales, S. Tonse, K. Yagi, M. N. Namboodiri, O. Hansen, F. Videbæk, S. Hayashi, X. Yang, M. J. Tannenbaum, S. Y. Fung, Y. Wang, J. Kang, H. C. Britt, J. Engelage, L. Ahle, L. P. Remsberg, R. Seto, D. P. Morrison, O. Vossnack, Hank Crawford, Yasuo Miake, J.W. Olness, S. Homma, R. R. Debbe, K. Kurita, D. R. Beavis, S. G. Steadman, Y. Akiba, Y. D. Wu, B. Moskowitz, T. Sung, Daniel S. Zachary, Hideki Hamagaki, B. Budick, H. Kaneko, P. Rothschild, S. Ueno, W. A. Zajc, W. L. Kehoe, D. S. Woodruff, George Stephans, Ryugo S. Hayano, M. Gonin, Kenta Shigaki, C. Y. Chi, S. Nagamiya, M. J. LeVine, H. E. Wegner, C. Chasman, T. K. Nayak, J. B. Cumming, S. B. Kaufman, V. Cianciolo, Fuqiang Wang, T. C. Sangster, R. A. Soltz, S. Gushue, Y. Y. Chu, Z. Chen, J. H. van Dijk, J. H. Thomas, and Brian Cole

Subjects
Physics, Nuclear and High Energy Physics, Silicon, Projectile, Nuclear Theory, chemistry.chemical_element, Spectral line, Nuclear physics, Transverse plane, chemistry, Atomic physics, Nuclear Experiment, Nucleon, Beam energy, Energy (signal processing), Beam (structure)
Abstract

Measurements of the global transverse energy distributions dσ / dE T and dE T / dη using the new AGS beam of 197 Au at 11.6 A GeV/ c on a Au target, as well as a beam of 28 Si at 14.6 A GeV/ c on Al and Au targets, are presented for a leadglass detector with acceptance 1.3 ≤ η ≤ 2.4 and 0 ≤ φ π . The dσ / dE T spectra are observed to have different shapes for the different systems and simple energy rescaling does not account for the projectile dependence. The Au+Au dσ / dE T spectrum is satisfactorily constructed from the upper edge of Si+Au by the geometric Wounded Projectile Nucleon Model after applying a correction for the beam energy.

Published
1994

7. Centrality dependence of K+ and π+ multiplicities from Si + A collisions at 14.6 A GeV/c

Author

Hiroyoshi Sakurai, S. Nagamiya, J. B. Costales, Ryugo S. Hayano, S. B. Kaufman, Yuichi Ikeda, M. J. Tannenbaum, J. Engelage, Hideki Hamagaki, J.W. Olness, S. Katcoff, P. Vincent, R. J. Morse, C. G. Parsons, H. J. Crawford, O. Hansen, K. Kitamura, S. Y. Fung, H. E. Wegner, H. Z. Huang, T. Abbott, S. Homma, M. Gonin, L. P. Remsberg, Yasuo Miake, B. Cole, J. H. Kang, R. R. Debbe, D. R. Beavis, D. S. Woodruff, Y. D. Wu, R. J. Ledoux, P. Stankus, S. G. Steadman, F. Videbaek, M. A. Bloomer, W. A. Zajc, C. Chasman, K. Kimura, Shinichi Hayashi, K. Kurita, I. Juricic, V. Vutsadakis, J. B. Cumming, George Stephans, T. Sugitate, Y. Akiba, B. Moskowitz, P. D. Bond, M. Le Vine, M. Vient, Z. Chen, J. H. van Dijk, Y. Y. Chu, S. Gushue, and M. Sarabura

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Spectrometer, Multiplicity (mathematics), Atomic physics, Nuclear Experiment, Kinetic energy
Abstract

K + and π + multiplicities have been measured in magnetic spectrometer for Si++ Al, Si+ Cu and Si + Au collisions at 14.6 A GeV/ c incident momentum. The multiplicities were obtained for five different windows of forward kinetic energy as detected in a zero degree calorimeter. The K + / π + multiplicity ratio ranges from ≈9% in peripheral interactions to 19% in central Si+Au. The largest K + / π + ratios are observed for those events for each target that leave the least energy in the zero degree calorimeter and the ratio increases with target mass. The observations suggest that multiple interactions are important in the particle production mechanism.

Published
1992

8. KNO scaling isn't what it used to be

Author

W. A. Zajc

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Negative binomial distribution, Context (language use), Multiplicity (mathematics), Statistical physics, Scaling
Abstract

The definition of KNO scaling is reviewed in the context of the negative binomial distributions. It is shown that these distributions provide a natural description of observed violations of KNO scaling. The properties of the negative binomial distribution are then used to predict the correlations between photons and charged-particle production, and the forward-backward multiplicity correlations.

Published
1986

9. Measurement of energy emission from O+A and p+A collisions at 14.5 GeV/c per nucleon with a lead-glass array

Author

W. A. Watson, Yasuo Miake, D. S. Woodruff, Ma Bloomer, Y. Akiba, L. Grodzins, S. Gushue, A.W. Sunyar, M. J. Tannenbaum, Hideki Hamagaki, J. Engelage, J. B. Cumming, O. Hansen, S. B. Kaufman, P. Vincent, D.E. Greiner, P. D. Bond, T. Abbott, Y. Y. Chu, M. Sarabura, A. Shor, D. Alburger, W. A. Zajc, M. Le Vine, R.R. Betts, J.B. Costales, H.A. Enge, J. H. van Dijk, V. Vutsadakis, C. G. Parsons, P.E. Haustein, George Stephans, S. Y. Fung, C. Chasman, Toru Sugitate, D. R. Beavis, R. J. Morse, R. R. Debbe, S. G. Steadman, P. J. Lindstrom, S. Homma, E. Duek, H. E. Wegner, M. Torikoshi, Hank Crawford, B.A. Cole, S. Nagamiya, J.W. Olness, H.N. Huang, Yuichi Ikeda, L. P. Remsberg, Shinichi Hayashi, F. Videbaek, M.A.J. Mariscotti, M. Tanaka, E. Vulgaris, and S. Katcoff

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, lcsh:QC1-999, Nuclear physics, Lead glass, visual_art, Energy spectrum, visual_art.visual_art_medium, Total energy, Nuclear Experiment, Nucleon, lcsh:Physics, Energy (signal processing), Beam (structure)
Abstract

The first data from a 16O beam of total energy 232 GeV at the BNL Tandem-AGS are reported. A lead-glass array covering the laboratory pseudo-rapidity interval 1.25 < η < 2.44 recorded the energy emitted from 16O interactions in Au, Cu, and Mylar and from proton interactions in Au. The shapes of the energy spectra imply that a nucleon loses most of its energy in the first few collisions. Consequently a simple description of the observed 16O+Cu and 16O+Au spectra as a properly weighted convolution of the observed p + Au spectrum is obtained. It is shown that 16O nuclei at this energy can be substantially stopped by nuclei of the size of Cu. An estimate of the energy density for central collisions is given.

Published
1987

10. Measurements of in collisions of light nuclei at

Author

R. Møller, Michael Albrow, L. H. Olsen, Yona Oren, I. Dahl-Jensen, K. Kulka, E. Vella, S. Dagan, Göran Jarlskog, W. A. Zajc, J. E. Hooper, R. Kroeger, O. Botner, W. Frati, N. A. McCubbin, Sherman Frankel, Horst Breuker, H. Bøggild, J. R. Carter, Borge Svane Nielsen, E. Dahl-Jensen, B. Lörstad, Vincent Hedberg, C.W. Fabjan, Ulrich Goerlach, A. A. Carter, W. R. Molzon, Torsten Paul Ake Åkesson, B. Callen, G. Damgaard, Y. Choi, S. Almehed, and Odette Benary

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Light nucleus, Calorimeter (particle physics), Pseudorapidity, Interval (graph theory), High Energy Physics::Experiment, Nuclear Experiment, Nucleon
Abstract

Calorimeter measurements of dσ de t for pp, dd, pα , and αα collisions at S nn =31.5 GeV are presented for the pseudorapidity interval | η cm | ⩽ 0.7, extending over eight decades to E t ⩾ 30 GeV. The data are compared with models that predict nuclear cross sections directly from pp data, under the assumption of independent nucleon scatters.

Published
1989

11. Production of prompt positrons at low transverse momentum in 63 GeV pp collisions at the CERN intersecting storage rings

Author

W. A. Zajc, A. A. Carter, P. Jeffreys, R. Carosi, S. Eidelman, I. Mannelli, G. Damgaard, L. K. Resvanis, H. J. Specht, P. Cecil, Göran Jarlskog, G. Piskounov, M. D. Gibson, Torsten Paul Ake Åkesson, H. Bøggild, Sherman Frankel, C. L. Woody, Odette Benary, A. Kalinovsky, K. H. Hansen, W. Frati, J. W. Hiddleston, Y. Choi, B. Lörstad, N. A. McCubbin, T. Killian, S. Mayburov, W. R. Molzon, S. Katsanevas, C.W. Fabjan, M. Winik, Christine Kourkoumelis, Pavlos Ioannou, V. Chernyatin, J. v. d. Lans, I. Dahl-Jensen, E. Anassontzis, E. Dahl-Jensen, J. R. Carter, M. Sullivan, W. M. Evans, I. Stumer, K. Kulka, L. H. Olsen, Howard Gordon, W. J. Willis, P. Frandsen, Michael Albrow, E. Vella, O. Botner, Vincent Hedberg, Ulrich Goerlach, B. Dolgoshein, Y. Goloubkov, Richard Batley, P. Nevsky, T. W. Ludlam, V. Kantserov, Volker D. Burkert, Yona Oren, S. Dagan, R. B. Palmer, G. Thorstenson, J.G. Williamson, Ulf Mjörnmark, G. Kesseler, B. Callen, J. Lindsay, P. Vasiliev, H. Brody, V. Sidorov, A. Rudge, P. Dam, E. Rosso, S. Almehed, T. Jensen, Borge Svane Nielsen, J. A. Thompson, Alevtina Shmeleva, R. Møller, Jurgen Schukraft, D.C. Rahm, W. Cleland, Horst Breuker, A. Markou, R. Kroeger, W. Witzeling, D. Lissauer, I. Gavrilenko, and J. E. Hooper

Subjects
Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Intersecting Storage Rings, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Bremsstrahlung, Nuclear physics, Positron, Transverse momentum, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, Particle Physics - Experiment
Abstract

The production of inclusive prompt positrons in pp collisions at √ s = 63 GeV and θ cm = 90° has been measured over the p T interval 0.08 T GeV c . The e / π ratio rises from ∼ 2 × 10 −4 at p T = 0.9 GeV c to ∼ 1 × 10 −3 at p T = 0.1 GeV c . This is a factor of 6 higher than would be expected from the sum of hadronic bremsstrahlung and the semileptonic decay of charm.

Published
1985

12. A comparison of direct photon, π0 in p and pp interactions at the CERN ISR

Author

K. Kulka, E. Vella, Ulf Mjörnmark, J. Lindsay, E. Rosso, Borge Svane Nielsen, H. Bøggild, M. D. Gibson, Alevtina Shmeleva, Yona Oren, K. H. Hansen, P. Dam, Christine Kourkoumelis, R. Carosi, Vincent Hedberg, E. Dahl-Jensen, T. Ludlam, P. W. Jeffreys, V. Sidorov, W. E. Cleland, C. L. Woody, Odette Benary, H. Specht, S. Katsanevas, C.W. Fabjan, W. Frati, J. W. Hiddleston, Torsten Paul Ake Åkesson, T. Jensen, S. Almehed, J. A. Thompson, Volker D. Burkert, A. Markou, W. A. Zajc, E. G. Anassontzis, G. Damgaard, S. Dagan, Ulrich Goerlach, Y. Choi, R. Kroeger, J. van der Lans, Richard Batley, W. J. Willis, Pavlos Ioannou, Boris Dolgoshein, R. Møller, Howard Gordon, Michael Albrow, I. Stumer, P. Frandsen, I. Dahl-Jensen, G. Thorstenson, V. Kantserov, P. Vasilev, G. Kesseler, A. Nilsson, H. Brody, A. Kalinovsky, A. A. Carter, W. Witzeling, G. Piskounov, T. Killian, L. H. Olsen, A. Rudge, Göran Jarlskog, W. R. Molzon, M.W. Evans, M. Winik, B. Lörstad, Yu. Golubkov, N. A. McCubbin, P. Nevsky, B. Callen, P.C. Cecil, D. Lissauer, Sherman Frankel, J. R. Carter, I. Gavrilenko, I. Mannelli, J. E. Hooper, S. Eidelman, Horst Breuker, S. Maiburov, V. Chernyatin, M. Sullivan, Robert B. Palmer, O. Botner, J.G. Williamson, L. K. Resvanis, Jurgen Schukraft, and D.C. Rahm

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Photon, Significant difference, Rapidity
Abstract

We have measured the production of direct photons, π 0 's, and η's in p p and pp collisions at √ s =53 GeV in the range 2≈ p T ≈6 GeV/ c for the central rapidity region | y | 0.4. No statistically significant difference between pp and pp interactions is observed.

Published
1985

13. Bose-Einstein correlations in αα, pp and interactions

Author

L. H. Olsen, A. Markou, H. J. Hilke, David Ja Cockerill, J. van der Lans, R. Batley, R. Møller, Odette Benary, I. Dahl-Jensen, Howard Gordon, M. Sullivan, G. Kesseler, P. Cecil, S. Almehed, W. M. Evans, A. Kalinovsky, T. Killian, P. Frandsen, P. Dam, S. Dagan, W. R. Molzon, M. Winik, K. Kulka, R. H. Schindler, Göran Jarlskog, W. J. Willis, E. Vella, C.W. Fabjan, G. Damgaard, Michael Albrow, Ulrich Goerlach, B. Lörstad, Ulf Mjörnmark, Volker D. Burkert, N. A. McCubbin, H. Brody, Yona Oren, C. L. Woody, J. Lindsay, J. R. Carter, Vincent Hedberg, T. Ludlam, E. Rosso, W. Frati, J. W. Hiddleston, A. Rudge, W. A. Zajc, S. U. Chung, D. Lissauer, Anders Nilsson, P. Jeffreys, W. Cleland, Sherman Frankel, B. W. Heck, Horst Breuker, Borge Svane Nielsen, J.G. Williamson, K. H. Hansen, R. Kroeger, W. Witzeling, M. D. Gibson, Torsten Paul Ake Åkesson, L. Rosselet, A. A. Carter, S. Eidelman, E. Dahl-Jensen, O. Botner, H. Bøggild, J. E. Hooper, and G. Thorstenson

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, chemistry.chemical_element, Bose–Einstein correlations, High multiplicity, Central region, Nuclear physics, Particle type, Pion, chemistry, Rapidity, Multiplicity (chemistry), Helium
Abstract

Bose-Einstein correlations between pions produced in the central region of rapidity in αα, pp and p p interactions have been studied at the ISR. The parameters r and τ c -often interpreted as the radius and depth of the π-emitting region - are found to be independent of incident particle type but to depend on the mean charged multiplicity. In high multiplicity events, the pions appear to originate from a larger space-time region.

Published
1983

14. The dominance of jets at large transverse energy in a full-azimuth hadron calorimeter at ISR energies

Author

M. Sullivan, P. Frandsen, S. Dagan, A. A. Carter, R. Carosi, Torsten Paul Ake Åkesson, L. Rosselet, O. Botner, G. Damgaard, G. Thorstenson, Howard Gordon, W. A. Zajc, C. W. Fabjan, S. Almehed, M. D. Gibson, I. Dahl-Jensen, W. J. Willis, P. Jeffreys, Michael Albrow, Ulrich Goerlach, A. Hallgren, T. Ludlam, J. E. Hooper, J. v. d. Lans, S. U. Chung, W. Cleland, Richard Batley, Odette Benary, E. Dahl-Jensen, B. Lörstad, D. Lissauer, W. M. Evans, H. Bøggild, I. Stumer, R. H. Schindler, J. R. Carter, Horst Breuker, Göran Jarlskog, C. L. Woody, W. Frati, J. W. Hiddleston, K. H. Hansen, Anders Nilsson, H. J. Hilke, A. Kalinovsky, S. Eidelman, T. Killian, W. R. Molzon, T. Jensen, M. Winik, R. Kroeger, W. Witzeling, H. Brody, G. Kesseler, P. Cecil, A. Markou, J. G. Williamson, Vincent Hedberg, B. W. Heck, E. Rosso, K. Kulka, E. Vella, Ulf Mjörnmark, J. Lindsay, N. A. McCubbin, Sherman Frankel, L. H. Olsen, P. Dam, David Ja Cockerill, R. Møller, Volker D. Burkert, Yona Oren, Borge Svane Nielsen, and A. Rudge

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Hadron, Elementary particle, Azimuth, Nuclear physics, Transverse plane, Pion, Antimatter, High Energy Physics::Experiment, Computer Science::Symbolic Computation, Nuclear Experiment, Particle Physics - Experiment, Computer Science::Distributed, Parallel, and Cluster Computing
Abstract

Events with a large transverse energy in a calorimeter with full azimuthal coverage and |y

Published
1983

15. A measurement of alpha-alpha elastic scattering at the CERN ISR

Author

L. H. Olsen, D. Weygand, Torsten Paul Ake Åkesson, K. Kulka, H. Bøggild, O. Botner, David Ja Cockerill, R. Møller, M. Sullivan, W. J. Willis, D. Lissauer, Vincent Hedberg, Michael Albrow, J. van der Lans, C.W. Fabjan, W. M. Evans, B. Lörstad, A. Rudge, I. Stumer, Horst Breuker, S. Almehed, E. Vella, S. Dagan, K. H. Hansen, P. Frandsen, I. Dahl-Jensen, J. R. Carter, J. A. Thompson, T. W. Ludlam, Sherman Frankel, Ulrich Goerlach, J. Lindsay, J. G. Williamson, A. A. Carter, Richard Batley, P. Dam, J. E. Hooper, W. A. Zajc, M. J. Goodrick, T. W. Pritchard, H. Brody, Borge Svane Nielsen, G. Damgaard, C. L. Woody, W. Frati, J. W. Hiddleston, R. Kroeger, P. Cecil, Yona Oren, G. Thorstenson, Odette Benary, M. D. Gibson, E. Dahl-Jensen, W. Cleland, S. U. Chung, Göran Jarlskog, Howard Gordon, W. R. Molzon, M. Winik, and N. A. McCubbin

Subjects
Nuclear reaction, Elastic scattering, Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Scattering, Extrapolation, Alpha particle, Charged particle, Nuclear physics, Cross section (physics), Nuclear Experiment, Particle Physics - Experiment
Abstract

We present measurements of the αα elastic scattering differential cross section at √ s = 126 GeV in the range 0.05 ⩽ ‖ t ‖ c ) 2 . The data give an improved definition of the first cross section minimum at ‖ t ‖ = 0.098 (GeV/ c ) 2 and are consistent with theotheoretical models of nucleus-nucleus scattering. The αα total cross section obtained by extrapolation to the optical point is 280 ± 70 mb.

Published
1985

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