Production of $\pi^0$, $\eta$, and $K_S$ mesons in U$+$U collisions at $\sqrt{s_{_{NN}}}=192$ GeV
Acharya U.,Aidala C.,Ajitanand N. N.,Akiba Y.,Akimoto R.,Alexander J.,Aoki K.,Apadula N.,Asano H.,Atomssa E. T.,Awes T. C.,Azmoun B.,Babintsev V.,Bai M.,Bai X.,Bannier B.,Barish K. N.,Bathe S.,Baublis V.,Baumann C.,Baumgart S.,Bazilevsky A.,Beaumier M.,Belmont R.,Berdnikov A.,Berdnikov Y.,Bichon L.,Black D.,Blankenship B.,Blau D. S.,Bok J. S.,Borisov V.,Boyle K.,Brooks M. L.,Bryslawskyj J.,Buesching H.,Bumazhnov V.,Butsyk S.,Campbell S.,Roman V. Canoa,Chen C. -H.,Chi C. Y.,Chiu M.,Choi I. J.,Choi J. B.,Choi S.,Christiansen P.,Chujo T.,Cianciolo V.,Cole B. A.,Connors M.,Cronin N.,Crossette N.,Csanád M.,Csörgő T.,Datta A.,Daugherity M. S.,David G.,DeBlasio K.,Dehmelt K.,Denisov A.,Deshpande A.,Desmond E. J.,Ding L.,Do J. H.,D'Orazio L.,Drapier O.,Drees A.,Drees K. A.,Durham J. M.,Durum A.,Engelmore T.,Enokizono A.,Esha R.,Esumi S.,Eyser K. O.,Fadem B.,Fan W.,Fields D. E.,Finger M.,Finger Jr. M.,Firak D.,Fitzgerald D.,Fleuret F.,Fokin S. L.,Frantz J. E.,Franz A.,Frawley A. D.,Fukao Y.,Fusayasu T.,Gainey K.,Gal C.,Garg P.,Garishvili A.,Garishvili I.,Giordano F.,Glenn A.,Gong X.,Gonin M.,Goto Y.,de Cassagnac R. Granier,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.,Hashimoto K.,Hayano R.,He X.,Hemmick T. K.,Hester T.,Hill J. C.,Hodges A.,Hollis R. S.,Homma K.,Hong B.,Hoshino T.,Huang J.,Huang S.,Ichihara T.,Ikeda Y.,Imai K.,Imazu Y.,Inaba M.,Iordanova A.,Isenhower D.,Isinhue A.,Ivanishchev D.,Jacak B. V.,Jeon S. J.,Jezghani M.,Ji Z.,Jia J.,Jiang X.,Johnson B. M.,Joo K. S.,Jouan D.,Jumper D. S.,Kamin J.,Kanda S.,Kang B. H.,Kang J. H.,Kang J. S.,Kapustinsky J.,Kawall D.,Kazantsev A. V.,Key J. A.,Khachatryan V.,Khandai P. K.,Khanzadeev A.,Khatiwada A.,Kijima K. M.,Kim C.,Kim D. J.,Kim E. -J.,Kim Y. -J.,Kim Y. K.,Kincses D.,Kistenev E.,Klatsky J.,Kleinjan D.,Kline P.,Koblesky T.,Kofarago M.,Komkov B.,Koster J.,Kotchetkov D.,Kotov D.,Krizek F.,Kurgyis B.,Kurita K.,Kurosawa M.,Kwon Y.,Lacey R.,Lai Y. S.,Lajoie J. G.,Larionova D.,Larionova M.,Lebedev A.,Lee D. M.,Lee G. H.,Lee J.,Lee K. B.,Lee K. S.,Lee S. H.,Leitch M. J.,Leitgab M.,Lewis B.,Lewis N. A.,Li X.,Lim S. H.,Liu M. X.,Lökös S.,Lynch D.,Maguire C. F.,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.,Mibe T.,Mignerey A. C.,Milov A.,Mishra D. K.,Mitchell J. T.,Mitrankov Iu.,Miyasaka S.,Mizuno S.,Mohanty A. K.,Mohapatra S.,Moon T.,Morrison D. P.,Morrow S. I.,Moskowitz M.,Moukhanova T. V.,Mulilo B.,Murakami T.,Murata J.,Mwai A.,Nagae T.,Nagamiya S.,Nagle J. L.,Nagy M. I.,Nakagawa I.,Nakamiya Y.,Nakamura K. R.,Nakamura T.,Nakano K.,Nattrass C.,Nelson S.,Netrakanti P. K.,Nihashi M.,Niida T.,Nouicer R.,Novák T.,Novitzky N.,Nyanin A. S.,O'Brien E.,Ogilvie C. A.,Oide H.,Okada K.,Osborn J. D.,Oskarsson A.,Ozawa K.,Pak R.,Pantuev V.,Papavassiliou V.,Park I. H.,Park S.,Park S. K.,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.,Pisani R. P.,Pun A.,Purschke M. L.,Qu H.,Radzevich P. V.,Rak J.,Ramasubramanian N.,Ravinovich I.,Read K. F.,Reynolds D.,Riabov V.,Riabov Y.,Richardson E.,Richford D.,Rinn T.,Riveli N.,Roach D.,Rolnick S. D.,Rosati M.,Runchey J.,Ryu M. S.,Sahlmueller B.,Saito N.,Sakaguchi T.,Sako H.,Samsonov V.,Sarsour M.,Sato S.,Sawada S.,Sedgwick K.,Seele J.,Seidl R.,Sekiguchi Y.,Sen A.,Seto R.,Sett P.,Sharma D.,Shaver A.,Shein I.,Shibata T. -A.,Shigaki K.,Shimomura M.,Shoji K.,Shukla P.,Sickles A.,Silva C. L.,Silvermyr D.,Singh B. K.,Singh C. P.,Singh V.,Skolnik M.,Slunečka M.,Smith K. L.,Solano S.,Soltz R. A.,Sondheim W. E.,Sorensen S. P.,Sourikova I. V.,Stankus P. W.,Steinberg P.,Stenlund E.,Stepanov M.,Ster A.,Stoll S. P.,Stone M. R.,Sugitate T.,Sukhanov A.,Sun J.,Sun X.,Sun Z.,Takahara A.,Taketani A.,Tanaka Y.,Tanida K.,Tannenbaum M. J.,Tarafdar S.,Taranenko A.,Tennant E.,Timilsina A.,Todoroki T.,Tomášek M.,Torii H.,Towell R. S.,Tserruya I.,Ueda Y.,Ujvari B.,van Hecke H. W.,Vargyas M.,Vazquez-Zambrano E.,Veicht A.,Velkovska J.,Vértesi R.,Virius M.,Vrba V.,Vznuzdaev E.,Wang X. R.,Watanabe D.,Watanabe K.,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.,Yamaguchi Y. L.,Yanovich A.,Yokkaichi S.,Yoon I.,You Z.,Younus I.,Yushmanov I. E.,Zajc W. A.,Zelenski A.,Zhai Y.,Zharko S.,Zhou S.,Zou L.
arxiv（2020）
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摘要
The PHENIX experiment at the Relativistic Heavy Ion Collider measured $\pi^0$, $\eta$, and $K_S$ mesons at midrapidity in U$+$U collisions at $\sqrt{s_{_{NN}}}$=192 GeV in a wide transverse momentum range. Measurements were performed in the $\pi^0$($\eta$)$\rightarrow\gamma\gamma$ and $K_S\rightarrow\pi^0\pi^0$ decay modes. A strong suppression of $\pi^0$, $\eta$, and $K_S$ meson production at high transverse momentum was observed in central U$+$U collisions relative to binary scaled $p$$+$$p$ results. Yields of $\pi^0$, $\eta$ and $K_S$ mesons measured in U$+$U collisions show similar suppression pattern to the ones measured in Au$+$Au collisions at $\sqrt{s_{NN}}=200$ GeV for similar numbers of participant nucleons. The $\eta$/$\pi^0$ and $K_S$/$\pi^0$ ratios do not show dependence on centrality or transverse momentum, and are consistent with previously measured values in hadron-hadron, hadron-nucleus, nucleus-nucleus, and $e^+e^-$ collisions.
