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Measurement of the relative yields of ψ(2S) to ψ(1S) mesons produced at forward and backward rapidity in p+p, p+Al, p+Au, and He 3 +Au collisions at s NN =200 GeV

Adare, A; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Alfred, M.; Andrieux, V.; Aoki, K.; Apadula, N; Asano, H. and Ayuso, Carmen, et al. (2017) In Physical Review C: covering nuclear physics 95(3).
Abstract

The PHENIX Collaboration has measured the ratio of the yields of ψ(2S) to ψ(1S) mesons produced in p+p, p+Al, p+Au, and He3+Au collisions at sNN=200 GeV over the forward and backward rapidity intervals 1.2<|y|<2.2. We find that the ratio in p+p collisions is consistent with measurements at other collision energies. In collisions with nuclei, we find that in the forward (p-going or He3-going) direction, the relative yield of ψ(2S) mesons to ψ(1S) mesons is consistent with the value measured in p+p collisions. However, in the backward (nucleus-going) direction, the ψ(2S) meson is preferentially suppressed by a factor of ∼2. This suppression is attributed in some models to the breakup of the weakly bound ψ(2S) meson through... (More)

The PHENIX Collaboration has measured the ratio of the yields of ψ(2S) to ψ(1S) mesons produced in p+p, p+Al, p+Au, and He3+Au collisions at sNN=200 GeV over the forward and backward rapidity intervals 1.2<|y|<2.2. We find that the ratio in p+p collisions is consistent with measurements at other collision energies. In collisions with nuclei, we find that in the forward (p-going or He3-going) direction, the relative yield of ψ(2S) mesons to ψ(1S) mesons is consistent with the value measured in p+p collisions. However, in the backward (nucleus-going) direction, the ψ(2S) meson is preferentially suppressed by a factor of ∼2. This suppression is attributed in some models to the breakup of the weakly bound ψ(2S) meson through final-state interactions with comoving particles, which have a higher density in the nucleus-going direction. These breakup effects may compete with color screening in a deconfined quark-gluon plasma to produce sequential suppression of excited quarkonia states.

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Physical Review C: covering nuclear physics
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95
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3
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American Physical Society
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  • scopus:85015784602
  • wos:000396021700004
ISSN
2469-9985
DOI
10.1103/PhysRevC.95.034904
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English
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yes
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1c409739-4171-4cc8-9ca7-5ac80adc9695
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2017-06-13 13:17:50
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2017-09-18 11:40:31
@article{1c409739-4171-4cc8-9ca7-5ac80adc9695,
  abstract     = {<p>The PHENIX Collaboration has measured the ratio of the yields of ψ(2S) to ψ(1S) mesons produced in p+p, p+Al, p+Au, and He3+Au collisions at sNN=200 GeV over the forward and backward rapidity intervals 1.2&lt;|y|&lt;2.2. We find that the ratio in p+p collisions is consistent with measurements at other collision energies. In collisions with nuclei, we find that in the forward (p-going or He3-going) direction, the relative yield of ψ(2S) mesons to ψ(1S) mesons is consistent with the value measured in p+p collisions. However, in the backward (nucleus-going) direction, the ψ(2S) meson is preferentially suppressed by a factor of ∼2. This suppression is attributed in some models to the breakup of the weakly bound ψ(2S) meson through final-state interactions with comoving particles, which have a higher density in the nucleus-going direction. These breakup effects may compete with color screening in a deconfined quark-gluon plasma to produce sequential suppression of excited quarkonia states.</p>},
  articleno    = {034904},
  author       = {Adare, A and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Alfred, M. and Andrieux, V. and Aoki, K. and Apadula, N and Asano, H. and Ayuso, Carmen and Azmoun, B. and Babintsev, V. and Bai, M and Bandara, N. S. and Bannier, B and Barish, K N and Bathe, S and Bazilevsky, A and Beaumier, M. and Beckman, S. and Belmont, R and Berdnikov, A and Berdnikov, Y. and Blau, D. S. and Boer, M. and Bok, J S and Bownes, E. K. and Boyle, K and Brooks, M L and Bryslawskyj, J. and Bumazhnov, V. and Butler, Christopher C. and Campbell, S. and Canoa Roman, V. and Cervantes, R. and Chen, C. H. and Chi, C Y and Chiu, M and Choi, I J and Choi, J B and Chujo, T. and Citron, Z. and Connors, M. and Cronin, N. and Csanád, M and Csörgo, T. and Danley, T. W. and Datta, A. and Daugherity, M. S. and David, G. and DeBlasio, K. and Dehmelt, K. and Denisov, A. and Deshpande, A and Desmond, E. J. and Dion, A. and Diss, P. B. and Dixit, D. and Do, J. H. and Drees, A. and Drees, K. A. and Dumancic, M. and Durham, J. M. and Durum, A. and Dusing, J. P. and Elder, T. and Enokizono, A. and En'yo, H. and Esumi, S. and Fadem, B and Fan, W. -T. and Feege, N. and Fields, D E and Finger, M and Finger, M and Fokin, S. L. and Frantz, J E and Franz, A. and Frawley, A D and Fukuda, Yuki and Gal, C and Gallus, P and Garg, P. and Ge, H. and Giordano, F and Glenn, A. and Goto, Y. and Grau, N. and Greene, S V and Grosse Perdekamp, M. and Gunji, T and Guragain, H. and Hachiya, T. and Haggerty, J. S. and Hahn, K I and Hamagaki, H and Hamilton, H. F. and Han, S. Y. and Hanks, J. and Hasegawa, S and Haseler, T. O. S. and Hashimoto, K. and He, X. and Hemmick, T. K. and Hill, J C and Hill, K and Hollis, R. S. and Homma, K and Hong, B. and Hoshino, T. and Hotvedt, N. and Huang, J. and Huang, S. and Imai, K. and Imrek, J. and Inaba, M. and Iordanova, A. and Isenhower, D. and Ito, Y and Ivanishchev, D. and Jacak, B. 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I. and Mannel, E. and Masuda, H. and McCumber, M and McGaughey, P L and McGlinchey, D. and McKinney, C. and Meles, A. and Mendez, A. R. and Mendoza, M. and Mignerey, A C and Mihalik, D. E. and Milov, A and Mishra, D. K. and Mitchell, J. T. and Mitsuka, G. and Miyasaka, S. and Mizuno, S. and Mohanty, A K and Montuenga, P. and Moon, T. and Morrison, D. P. and Morrow, S. I.M. and Moukhanova, T. V. and Murakami, T and Murata, J. and Mwai, A. and Nagai, K. and Nagashima, K. and Nagashima, T. and Nagle, J L and Nagy, M I and Nakagawa, I and Nakagomi, H. and Nakano, K and Nattrass, C and Netrakanti, P. K. and Niida, T and Nishimura, S and Nouicer, R. and Novák, T. and Novitzky, N. and Novotny, R and Nyanin, A. S. and O'Brien, E. and Ogilvie, C A and Orjuela Koop, J. D. and Osborn, J. D. and Oskarsson, A. and Ottino, G. J. and Ozawa, K. and Pak, R. and Pantuev, V. and Papavassiliou, V. and Park, J. S. and Park, S. and Pate, S F and Patel, M. and Peng, J. C. and Peng, W. X and Perepelitsa, D. V. and Perera, G. D. N. and Peressounko, D. Yu. and Perezlara, C. E. and Perry, J. and Petti, R. and Phipps, M. and Pinkenburg, C. and Pinson, R. and Pisani, R. P. and Press, C. J. and Pun, A. and Purschke, M. L. and Rak, J. and Ramson, B. J. and Ravinovich, I and Read, K F and Reynolds, D. and Riabov, V. and Riabov, Y and Richford, D. and Rinn, T. and Rolnick, S D and Rosati, M and Rowan, Z. and Rubin, J. G. and Runchey, J. and Safonov, A. S. and Sahlmueller, B and Saito, N. and Sakaguchi, T. and Sako, H. and Samsonov, V. and Sarsour, M. and Sato, K. and Sato, S and Schaefer, B. and Schmoll, B. K. and Sedgwick, K and Seidl, R and Sen, A. and Seto, R and Sett, P. and Sexton, A. and Sharma, D. and Shein, I. and Shibata, T. A. and Shigaki, K. and Shimomura, M and Shioya, T. and Shukla, P. and Sickles, A. and Silva, C L and Silva, J. A. and Silvermyr, D. and Singh, B. K. and Singh, C P and Singh, V. and Slunečka, M and Smith, K. L. and Snowball, M. and Soltz, R A and Sondheim, W E and Sorensen, S. P. and Sourikova, I. V. and Stankus, P W and Stepanov, M and Stien, H. and Stoll, S. P. and Sugitate, T and Sukhanov, A. and Sumita, T. and Sun, J. and Syed Khaja, A S and Sziklai, J and Takeda, A. and Taketani, A and Tanida, K. and Tannenbaum, M. J. and Tarafdar, S and Taranenko, A, and Tarnai, G. and Tieulent, R and Timilsina, A. and Todoroki, T and Tomášek, M and Towell, C. L. and Towell, R. and Towell, R S and Tserruya, I and Ueda, Y and Ujvari, B. and van Hecke, H W and Vazquez-Carson, S. and Velkovska, J. and Virius, M and Vrba, V and Vukman, N. and Wang, X. R. and Wang, Z. and Watanabe, Y and Watanabe, Y. S. and Wei, F and White, A. S. and Wong, C. P. and Woody, C. L. and Wysocki, M and Xia, B. and Xu, C. and Xu, Q and Xue, L. and Yalcin, S. and Yamaguchi, Y. L. and Yamamoto, H and Yanovich, A. and Yin, Peiji and Yoo, J. H. and Yoon, I. and Yu, H. and Yushmanov, I. E. and Zajc, W A and Zelenski, A and Zharko, S. and Zhou, S, and Zou, L. and , },
  issn         = {2469-9985},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Measurement of the relative yields of ψ(2S) to ψ(1S) mesons produced at forward and backward rapidity in p+p, p+Al, p+Au, and He 3 +Au collisions at s NN =200 GeV},
  url          = {http://dx.doi.org/10.1103/PhysRevC.95.034904},
  volume       = {95},
  year         = {2017},
}