$J/\psi$ and $\psi(2S)$ production at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV
Acharya U. A.,Adare A.,Aidala C.,Ajitanand N. N.,Akiba Y.,Akimoto R.,Alfred M.,Apadula N.,Aramaki Y.,Asano H.,Atomssa E. T.,Awes T. C.,Azmoun B.,Babintsev V.,Bai M.,Bandara N. S.,Bannier B.,Barish K. N.,Bathe S.,Bazilevsky A.,Beaumier M.,Beckman S.,Belmont R.,Berdnikov A.,Berdnikov Y.,Black D.,Bok J. S.,Boyle K.,Brooks M. L.,Bryslawskyj J.,Buesching H.,Bumazhnov V.,Campbell S.,Roman V. Canoa,Chen C. -H.,Chi C. Y.,Chiu M.,Choi I. J.,Choi J. B.,Chujo T.,Citron Z.,Connors M.,Csanád M.,Csörgő T.,Danley T. W.,Datta A.,Daugherity M. S.,David G.,DeBlasio K.,Dehmelt K.,Denisov A.,Deshpande A.,Desmond E. J.,Ding L.,Dion A.,Do J. H.,Drees A.,Drees K. A.,Durham J. M.,Durum A.,Enokizono A.,En'yo H.,Esha R.,Esumi S.,Fadem B.,Fan W.,Feege N.,Fields D. E.,Finger M.,Finger Jr. M.,Fitzgerald D.,Fokin S. L.,Frantz J. E.,Franz A.,Frawley A. D.,Gal C.,Gallus P.,Gamez E. A.,Garg P.,Ge H.,Giordano F.,Glenn A.,Goto Y.,Grau N.,Greene S. V.,Perdekamp M. Grosse,Gu Y.,Gunji T.,Guragain H.,Hachiya T.,Haggerty J. S.,Hahn K. I.,Hamagaki H.,Han S. Y.,Hanks J.,Hasegawa S.,Haseler T. O. S.,He X.,Hemmick T. K.,Hill J. C.,Hill K.,Hodges A.,Hollis R. S.,Homma K.,Hong B.,Hoshino T.,Huang J.,Huang S.,Ikeda Y.,Imai K.,Imazu Y.,Inaba M.,Iordanova A.,Isenhower D.,Ishimaru S.,Ivanishchev D.,Jacak B. V.,Jeon S. J.,Jezghani M.,Ji Z.,Jia J.,Jiang X.,Johnson B. M.,Joo E.,Joo K. S.,Jouan D.,Jumper D. S.,Kang J. H.,Kang J. S.,Kawall D.,Kazantsev A. V.,Key J. A.,Khachatryan V.,Khanzadeev A.,Khatiwada A.,Kihara K.,Kim C.,Kim D. H.,Kim D. J.,Kim E. -J.,Kim H. -J.,Kim M.,Kim Y. K.,Kincses D.,Kistenev E.,Klatsky J.,Kleinjan D.,Kline P.,Koblesky T.,Kofarago M.,Koster J.,Kotov D.,Kurgyis B.,Kurita K.,Kurosawa M.,Kwon Y.,Lacey R.,Lajoie J. G.,Lebedev A.,Lee K. B.,Lee S. H.,Leitch M. J.,Leitgab M.,Leung Y. H.,Lewis N. A.,Li X.,Lim S. H.,Liu M. X.,Lökös S.,Lynch D.,Majoros T.,Makdisi Y. I.,Makek M.,Manion A.,Manko V. I.,Mannel E.,McCumber M.,McGaughey P. L.,McGlinchey D.,McKinney C.,Meles A.,Mendoza M.,Meredith B.,Metzger W. J.,Miake Y.,Mignerey A. C.,Miller A. J.,Milov A.,Mishra D. K.,Mitchell J. T.,Mitrankov Iu.,Mitsuka G.,Miyasaka S.,Mizuno S.,Montuenga P.,Moon T.,Morrison D. P.,Morrow S. I.,Moukhanova T. V.,Mulilo B.,Murakami T.,Murata J.,Mwai A.,Nagamiya S.,Nagashima K.,Nagle J. L.,Nagy M. I.,Nakagawa I.,Nakagomi H.,Nakano K.,Nattrass C.,Nelson S.,Netrakanti P. K.,Nihashi M.,Niida T.,Nishitani R.,Nouicer R.,Novák T.,Novitzky N.,Nyanin A. S.,O'Brien E.,Ogilvie C. A.,Koop J. D. Orjuela,Osborn J. D.,Oskarsson A.,Ozawa K.,Pak R.,Pantuev V.,Papavassiliou V.,Park S.,Pate S. F.,Patel L.,Patel M.,Peng J. -C.,Peng W.,Perepelitsa D. V.,Perera G. D. N.,Peressounko D. Yu.,PerezLara C. E.,Perry J.,Petti R.,Pinkenburg C.,Pinson R.,Pisani R. P.,Pun A.,Purschke M. L.,Radzevich P. V.,Rak J.,Ramasubramanian N.,Ravinovich I.,Read K. F.,Reynolds D.,Riabov V.,Riabov Y.,Richford D.,Rinn T.,Riveli N.,Roach D.,Rolnick S. D.,Rosati M.,Rowan Z.,Rubin J. G.,Runchey J.,Saito N.,Sakaguchi T.,Sako H.,Samsonov V.,Sarsour M.,Sato S.,Sawada S.,Scarlett C. Y.,Schaefer B.,Schmoll B. K.,Sedgwick K.,Seele J.,Seidl R.,Sen A.,Seto R.,Sett P.,Sexton A.,Sharma D.,Shein I.,Shibata T. -A.,Shigaki K.,Shimomura M.,Shukla P.,Sickles A.,Silva C. L.,Silvermyr D.,Singh B. K.,Singh C. P.,Singh V.,Slunečka M.,Smith K. L.,Soltz R. A.,Sondheim W. E.,Sorensen S. P.,Sourikova I. V.,Stankus P. W.,Stepanov M.,Stoll S. P.,Sugitate T.,Sukhanov A.,Sumita T.,Sun J.,Sun X.,Sun Z.,Suzuki S.,Sziklai J.,Takahara A.,Taketani A.,Tanida K.,Tannenbaum M. J.,Tarafdar S.,Taranenko A.,Tieulent R.,Timilsina A.,Todoroki T.,Tomášek M.,Torii H.,Towell M.,Towell R.,Towell R. S.,Tserruya I.,Ueda Y.,Ujvari B.,van Hecke H. W.,Vargyas M.,Velkovska J.,Virius M.,Vrba V.,Vznuzdaev E.,Wang X. R.,Wang Z.,Watanabe D.,Watanabe Y.,Watanabe Y. S.,Wei F.,Whitaker S.,Wolin S.,Wong C. P.,Woody C. L.,Wu Y.,Wysocki M.,Xia B.,Xu Q.,Xue L.,Yalcin S.,Yamaguchi Y. L.,Yanovich A.,Yoo J. H.,Yoon I.,Younus I.,Yu H.,Yushmanov I. E.,Zajc W. A.,Zelenski A.,Zhai Y.,Zharko S.,Zou L.
arxiv（2019）
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摘要
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive $J/\psi$, and the cross section ratio of $\psi(2S)$ to $J/\psi$ at forward rapidity in $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV via the dimuon decay channel. Comparison is made to inclusive $J/\psi$ cross sections measured at $\sqrt{s}=200$ GeV and 2.76--13 TeV, to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-$x$ gluons in the proton at low transverse momentum ($p_T$), and to next-to-leading-order nonrelativistic QCD calculations for the rest of the $p_T$ range. These calculations overestimate the data at low $p_T$. While consistent with the data within uncertainties above $\approx3$ GeV/$c$, the calculations are systematically below the data. The total cross section times the branching ratio is BR$d\sigma^{J/\psi}_{pp}/dy (1.2<|y|<2.2, 0更多
