Polarization and cross section of midrapidity J /ψ production in p+p collisions at s =510 GeV

U. Acharya, A. Adare, C. Aidala, N. N. Ajitanand, Y. Akiba, R. Akimoto, M. Alfred, N. Apadula, Y. Aramaki, H. Asano, E. T. Atomssa, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, N. S. Bandara, B. Bannier, K. N. Barish, S. Bathe, A. BazilevskyM. Beaumier, S. Beckman, R. Belmont, A. Berdnikov, Y. Berdnikov, L. Bichon, D. Black, B. Blankenship, J. S. Bok, V. Borisov, K. Boyle, M. L. Brooks, J. Bryslawskyj, H. Buesching, V. Bumazhnov, S. Campbell, V. Canoa Roman, C. H. Chen, C. Y. Chi, M. Chiu, I. J. Choi, J. B. Choi, T. Chujo, Z. Citron, M. Connors, M. Csanád, T. Csörgo, A. Datta, M. S. Daugherity, G. David, K. Deblasio, K. Dehmelt, A. Denisov, A. Deshpande, E. J. Desmond, L. Ding, A. Dion, J. H. Do, A. Drees, K. A. Drees, J. M. Durham, A. Durum, A. Enokizono, H. En'yo, R. Esha, S. Esumi, B. Fadem, W. Fan, N. Feege, D. E. Fields, M. Finger, M. Finger, D. Firak, D. Fitzgerald, S. L. Fokin, J. E. Frantz, A. Franz, A. D. Frawley, C. Gal, P. Gallus, P. Garg, H. Ge, F. Giordano, A. Glenn, Y. Goto, N. Grau, S. V. Greene, M. Grosse Perdekamp, Y. Gu, T. Gunji, H. Guragain, T. Hachiya, J. S. Haggerty, K. I. Hahn, H. Hamagaki, S. Y. Han, J. Hanks, S. Hasegawa, X. He, T. K. Hemmick, J. C. Hill, A. Hodges, R. S. Hollis, K. Homma, B. Hong, T. Hoshino, J. Huang, S. Huang, Y. Ikeda, K. Imai, Y. Imazu, M. Inaba, A. Iordanova, D. Isenhower, D. Ivanishchev, B. V. Jacak, S. J. Jeon, M. Jezghani, Z. Ji, J. Jia, X. Jiang, B. M. Johnson, E. Joo, K. S. Joo, D. Jouan, D. S. Jumper, J. H. Kang, J. S. Kang, D. Kawall, A. V. Kazantsev, J. A. Key, V. Khachatryan, A. Khanzadeev, A. Khatiwada, K. Kihara, C. Kim, D. H. Kim, D. J. Kim, E. J. Kim, H. J. Kim, M. Kim, Y. K. Kim, D. Kincses, E. Kistenev, J. Klatsky, D. Kleinjan, P. Kline, T. Koblesky, M. Kofarago, J. Koster, D. Kotov, B. Kurgyis, K. Kurita, M. Kurosawa, Y. Kwon, R. Lacey, J. G. Lajoie, D. Larionova, M. Larionova, A. Lebedev, K. B. Lee, S. H. Lee, M. J. Leitch, M. Leitgab, N. A. Lewis, X. Li, S. H. Lim, M. X. Liu, S. Lökös, D. Lynch, T. Majoros, Y. I. Makdisi, M. Makek, A. Manion, V. I. Manko, E. Mannel, M. McCumber, P. L. McGaughey, D. McGlinchey, C. McKinney, A. Meles, M. Mendoza, B. Meredith, W. J. Metzger, Y. Miake, A. C. Mignerey, A. J. Miller, A. Milov, D. K. Mishra, J. T. Mitchell, Iu Mitrankov, S. Miyasaka, S. Mizuno, P. Montuenga, T. Moon, D. P. Morrison, S. I. Morrow, T. V. Moukhanova, B. Mulilo, T. Murakami, J. Murata, A. Mwai, S. Nagamiya, J. L. Nagle, M. I. Nagy, I. Nakagawa, H. Nakagomi, K. Nakano, C. Nattrass, S. Nelson, P. K. Netrakanti, M. Nihashi, T. Niida, R. Nouicer, N. Novitzky, A. S. Nyanin, E. O'Brien, C. A. Ogilvie, J. D. Orjuela Koop, J. D. Osborn, A. Oskarsson, K. Ozawa, R. Pak, V. Pantuev, V. Papavassiliou, S. Park, S. F. Pate, L. Patel, M. Patel, J. C. Peng, W. Peng, D. V. Perepelitsa, G. D.N. Perera, D. Yu Peressounko, C. E. Perezlara, J. Perry, R. Petti, C. Pinkenburg, R. Pinson, R. P. Pisani, M. Potekhin, A. Pun, M. L. Purschke, P. V. Radzevich, J. Rak, N. Ramasubramanian, I. Ravinovich, K. F. Read, D. Reynolds, V. Riabov, Y. Riabov, D. Richford, T. Rinn, N. Riveli, D. Roach, S. D. Rolnick, M. Rosati, Z. Rowan, J. G. Rubin, J. Runchey, N. Saito, T. Sakaguchi, H. Sako, V. Samsonov, M. Sarsour, S. Sato, S. Sawada, B. Schaefer, B. K. Schmoll, K. Sedgwick, J. Seele, R. Seidl, A. Sen, R. Seto, P. Sett, A. Sexton, D. Sharma, I. Shein, T. A. Shibata, K. Shigaki, M. Shimomura, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, B. K. Singh, C. P. Singh, V. Singh, M. Slunečka, K. L. Smith, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, P. W. Stankus, M. Stepanov, S. P. Stoll, T. Sugitate, A. Sukhanov, T. Sumita, J. Sun, X. Sun, Z. Sun, J. Sziklai, A. Takahara, A. Taketani, K. Tanida, M. J. Tannenbaum, S. Tarafdar, A. Taranenko, A. Timilsina, T. Todoroki, M. Tomášek, H. Torii, M. Towell, R. Towell, R. S. Towell, I. Tserruya, Y. Ueda, B. Ujvari, H. W. Van Hecke, M. Vargyas, J. Velkovska, M. Virius, V. Vrba, E. Vznuzdaev, X. R. Wang, D. Watanabe, Y. Watanabe, Y. S. Watanabe, F. Wei, S. Whitaker, S. Wolin, C. P. Wong, C. L. Woody, Y. Wu, M. Wysocki, B. Xia, Q. Xu, L. Xue, S. Yalcin, Y. L. Yamaguchi, A. Yanovich, I. Yoon, I. Younus, I. E. Yushmanov, W. A. Zajc, A. Zelenski, Y. Zhai, S. Zharko, L. Zou

Research output: Contribution to journalArticlepeer-review

Abstract

The PHENIX experiment has measured the spin alignment for inclusive J/ψ→e+e- decays in proton-proton collisions at s=510 GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarization at forward rapidity at the same collision energy. This analysis at midrapidity, complementary to the previous PHENIX results, sees no sizable polarization in the measured transverse momentum range of 0.0<pT<10.0 GeV/c. The results are consistent with a previous one-dimensional analysis at midrapidity at s=200 GeV. The transverse-momentum-dependent cross section for midrapidity J/ψ production has additionally been measured, and after comparison to world data, a simple logarithmic dependence of the cross section on s was found.

Original languageEnglish
Article number071103
JournalPhysical Review D
Volume102
Issue number7
DOIs
Publication statusPublished - 2020 Oct 28

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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