Identified charged-hadron production in p+Al, ^3He+Au, and
Cu+Au collisions at √(s__NN)=200 GeV and in U+U collisions at
√(s__NN)=193 GeV
PHENIX Collaboration,N. J. Abdulameer,U. Acharya,A. Adare,C. Aidala,N. N. Ajitanand,Y. Akiba,R. Akimoto,J. Alexander,M. Alfred,V. Andrieux,K. Aoki,N. Apadula,H. Asano,E. T. Atomssa,T. C. Awes,B. Azmoun,V. Babintsev,M. Bai,X. Bai,N. S. Bandara,B. Bannier,K. N. Barish,S. Bathe,V. Baublis,C. Baumann,S. Baumgart,A. Bazilevsky,M. Beaumier,S. Beckman,R. Belmont,A. Berdnikov,Y. Berdnikov,L. Bichon,D. Black,B. Blankenship,D. S. Blau,J. S. Bok,V. Borisov,K. Boyle,M. L. Brooks,J. Bryslawskyj,H. Buesching,V. Bumazhnov,S. Butsyk,S. Campbell,V. Canoa Roman,R. Cervantes,C. -H. Chen,M. Chiu,C. Y. Chi,I. J. Choi,J. B. Choi,S. Choi,P. Christiansen,T. Chujo,V. Cianciolo,Z. Citron,B. A. Cole,M. Connors,R. Corliss,Y. Corrales Morales,N. Cronin,N. Crossette,M. Csanád,T. Csörgő,L. D'Orazio,T. W. Danley,A. Datta,M. S. Daugherity,G. David,C. T. Dean,K. DeBlasio,K. Dehmelt,A. Denisov,A. Deshpande,E. J. Desmond,L. Ding,A. Dion,P. B. Diss,D. Dixit,V. Doomra,J. H. Do,O. Drapier,A. Drees,K. A. Drees,J. M. Durham,A. Durum,H. En'yo,T. Engelmore,A. Enokizono,R. Esha,K. O. Eyser,B. Fadem,W. Fan,N. Feege,D. E. Fields,M. Jr. Finger,M. Finger,D. Firak,D. Fitzgerald,F. Fleuret,S. L. Fokin,J. E. Frantz,A. Franz,A. D. Frawley,Y. Fukao,Y. Fukuda,T. Fusayasu,K. Gainey,P. Gallus,C. Gal,P. Garg,A. Garishvili,I. Garishvili,H. Ge,M. Giles,F. Giordano,A. Glenn,X. Gong,M. Gonin,Y. Goto,R. Granier de Cassagnac,N. Grau,S. V. Greene,M. Grosse Perdekamp,Y. Gu,T. Gunji,T. Guo,H. Guragain,T. Hachiya,J. S. Haggerty,K. I. Hahn,H. Hamagaki,H. F. Hamilton,J. Hanks,S. Y. Han,M. Harvey,S. Hasegawa,T. O. S. Haseler,K. Hashimoto,R. Hayano,T. K. Hemmick,T. Hester,X. He,J. C. Hill,K. Hill,A. Hodges,R. S. Hollis,K. Homma,B. Hong,T. Hoshino,N. Hotvedt,J. Huang,T. Ichihara,Y. Ikeda,K. Imai,Y. Imazu,M. Inaba,A. Iordanova,D. Isenhower,A. Isinhue,D. Ivanishchev,B. V. Jacak,S. J. Jeon,M. Jezghani,X. Jiang,Z. Ji,B. M. Johnson,K. S. Joo,D. Jouan,D. S. Jumper,J. Kamin,S. Kanda,B. H. Kang,J. H. Kang,J. S. Kang,D. Kapukchyan,J. Kapustinsky,S. Karthas,D. Kawall,A. V. Kazantsev,J. A. Key,V. Khachatryan,P. K. Khandai,A. Khanzadeev,A. Khatiwada,K. M. Kijima,B. Kimelman,C. Kim,D. J. Kim,E. -J. Kim,G. W. Kim,M. Kim,T. Kim,Y. -J. Kim,Y. K. Kim,D. Kincses,A. Kingan,E. Kistenev,R. Kitamura,J. Klatsky,D. Kleinjan,P. Kline,T. Koblesky,M. Kofarago,B. Komkov,J. Koster,D. Kotchetkov,D. Kotov,L. Kovacs,F. Krizek,S. Kudo,B. Kurgyis,K. Kurita,M. Kurosawa,Y. Kwon,Y. S. Lai,J. G. Lajoie,D. Larionova,A. Lebedev,D. M. Lee,G. H. Lee,J. Lee,K. B. Lee,K. S. Lee,S. Lee,S. H. Lee,M. J. Leitch,M. Leitgab,Y. H. Leung,B. Lewis,N. A. Lewis,S. H. Lim,M. X. Liu,X. Li,X. Li,V. -R. Loggins,D. A. Loomis,K. Lovasz,D. Lynch,S. Lökös,C. F. Maguire,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,Y. Miake,T. Mibe,A. C. Mignerey,A. Milov,D. K. Mishra,J. T. Mitchell,M. Mitrankova,Iu. Mitrankov,G. Mitsuka,S. Miyasaka,S. Mizuno,A. K. Mohanty,S. Mohapatra,M. M. Mondal,P. Montuenga,T. Moon,D. P. Morrison,M. Moskowitz,T. V. Moukhanova,A. Muhammad,B. Mulilo,T. Murakami,J. Murata,A. Mwai,T. Nagae,K. Nagai,S. Nagamiya,K. Nagashima,T. Nagashima,J. L. Nagle,M. I. Nagy,I. Nakagawa,H. Nakagomi,Y. Nakamiya,K. R. Nakamura,T. Nakamura,K. Nakano,C. Nattrass,S. Nelson,P. K. Netrakanti,M. Nihashi,T. Niida,S. Nishimura,R. Nouicer,N. Novitzky,T. Novák,G. Nukazuka,A. S. Nyanin,E. O'Brien,C. A. Ogilvie,J. Oh,H. Oide,K. Okada,J. D. Orjuela Koop,M. Orosz,J. D. Osborn,A. Oskarsson,G. J. Ottino,K. Ozawa,R. Pak,V. Pantuev,V. Papavassiliou,I. H. Park,J. S. Park,S. Park,S. K. Park,L. Patel,M. Patel,S. F. Pate,J. -C. Peng,W. Peng,D. V. Perepelitsa,G. D. N. Perera,D. Yu. Peressounko,C. E. PerezLara,J. Perry,R. Petti,M. Phipps,C. Pinkenburg,R. Pinson,R. P. Pisani,M. Potekhin,A. Pun,M. L. Purschke,H. Qu,P. V. Radzevich,J. Rak,N. Ramasubramanian,B. J. Ramson,I. Ravinovich,K. F. Read,D. Reynolds,V. Riabov,Y. Riabov,E. Richardson,D. Richford,T. Rinn,N. Riveli,D. Roach,S. D. Rolnick,M. Rosati,Z. Rowan,J. G. Rubin,J. Runchey,M. S. Ryu,A. S. Safonov,B. Sahlmueller,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,Y. Sekiguchi,A. Sen,R. Seto,P. Sett,A. Sexton,D. Sharma,A. Shaver,I. Shein,M. Shibata,T. -A. Shibata,K. Shigaki,M. Shimomura,T. Shioya,Z. Shi,K. Shoji,P. Shukla,A. Sickles,C. L. Silva,D. Silvermyr,B. K. Singh,V. Singh,M. Skolnik,M. Slunečka,K. L. Smith,M. Snowball,S. Solano,R. A. Soltz,W. E. Sondheim,S. P. Sorensen,I. V. Sourikova,P. W. Stankus,P. Steinberg,E. Stenlund,M. Stepanov,A. Ster,S. P. Stoll,M. R. Stone,T. Sugitate,A. Sukhanov,T. Sumita,J. Sun,Z. Sun,J. Sziklai,R. Takahama,A. Takahara,A. Taketani,Y. Tanaka,K. Tanida,M. J. Tannenbaum,S. Tarafdar,A. Taranenko,G. Tarnai,E. Tennant,R. Tieulent,A. Timilsina,T. Todoroki,M. Tomášek,H. Torii,C. L. Towell,R. Towell,R. S. Towell,I. Tserruya,Y. Ueda,B. Ujvari,H. W. van Hecke,M. Vargyas,E. Vazquez-Zambrano,A. Veicht,J. Velkovska,M. Virius,V. Vrba,N. Vukman,E. Vznuzdaev,R. Vértesi,X. R. Wang,Z. Wang,D. Watanabe,K. Watanabe,Y. Watanabe,Y. S. Watanabe,F. Wei,S. Whitaker,A. S. White,S. Wolin,C. P. Wong,C. L. Woody,M. Wysocki,B. Xia,L. Xue,C. Xu,Q. Xu,S. Yalcin,Y. L. Yamaguchi,H. Yamamoto,A. Yanovich,S. Yokkaichi,I. Yoon,J. H. Yoo,I. Younus,Z. You,I. E. Yushmanov,H. Yu,W. A. Zajc,A. Zelenski,S. Zhou,L. Zou
arxiv（2023）
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摘要
The PHENIX experiment has performed a systematic study of identified
charged-hadron (π^±, K^±, p, p̅) production at midrapidity
in p+Al, ^3He+Au, Cu+Au collisions at √(s__NN)=200 GeV and
U+U collisions at √(s__NN)=193 GeV. Identified charged-hadron
invariant transverse-momentum (p_T) and transverse-mass (m_T) spectra are
presented and interpreted in terms of radially expanding thermalized systems.
The particle ratios of K/π and p/π have been measured in different
centrality ranges of large (Cu+Au, U+U) and small (p+Al, ^3He+Au)
collision systems. The values of K/π ratios measured in all considered
collision systems were found to be consistent with those measured in p+p
collisions. However the values of p/π ratios measured in large collision
systems reach the values of ≈0.6, which is ≈2 times larger than
in p+p collisions. These results can be qualitatively understood in terms
of the baryon enhancement expected from hadronization by recombination.
Identified charged-hadron nuclear-modification factors (R_AB) are also
presented. Enhancement of proton R_AB values over meson R_AB values was
observed in central ^3He+Au, Cu+Au, and U+U collisions. The proton
R_AB values measured in p+Al collision system were found to be
consistent with R_AB values of ϕ, π^±, K^±, and π^0
mesons, which may indicate that the size of the system produced in p+Al
collisions is too small for recombination to cause a noticeable increase in
proton production.
