2024

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Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in sNN =200 GeV Au+Au collisions
(American Physical Society, 2024) N.J. Abdulameer; U. Acharya; A. Adare; C. Aidala; N.N. Ajitanand; Y. Akiba; R. Akimoto; H. Al-Ta'Ani; J. Alexander; A. Angerami; S. Antsupov; K. Aoki; N. Apadula; Y. Aramaki; H. Asano; E.C. Aschenauer; E.T. Atomssa; T.C. Awes; B. Azmoun; V. Babintsev; M. Bai; B. Bannier; E. Bannikov; K.N. Barish; B. Bassalleck; S. Bathe; V. Baublis; S. Baumgart; A. Bazilevsky; R. Belmont; A. Berdnikov; Y. Berdnikov; L. Bichon; B. Blankenship; D.S. Blau; J.S. Bok; V. Borisov; K. Boyle; M.L. Brooks; H. Buesching; V. Bumazhnov; S. Butsyk; S. Campbell; P. Castera; C.-H. Chen; D. Chen; M. Chiu; C.Y. Chi; I.J. Choi; J.B. Choi; S. Choi; R.K. Choudhury; P. Christiansen; T. Chujo; O. Chvala; V. Cianciolo; Z. Citron; B.A. Cole; M. Connors; R. Corliss; M. Csanád; T. Csörgo; L. D'Orazio; S. Dairaku; A. Datta; M.S. Daugherity; G. David; A. Denisov; A. Deshpande; E.J. Desmond; K.V. Dharmawardane; O. Dietzsch; L. Ding; A. Dion; M. Donadelli; V. Doomra; O. Drapier; A. Drees; K.A. Drees; J.M. Durham; A. Durum; S. Edwards; Y.V. Efremenko; T. Engelmore; A. Enokizono; R. Esha; K.O. Eyser; B. Fadem; D.E. Fields; M. Finger; M. Finger; D. Firak; D. Fitzgerald; F. Fleuret; S.L. Fokin; J.E. Frantz; A. Franz; A.D. Frawley; Y. Fukao; T. Fusayasu; K. Gainey; C. Gal; A. Garishvili; I. Garishvili; A. Glenn; X. Gong; M. Gonin; Y. Goto; R. Granier De Cassagnac; N. Grau; S.V. Greene; M. Grosse Perdekamp; T. Gunji; L. Guo; T. Guo; H.-A. Gustafsson; T. Hachiya; J.S. Haggerty; K.I. Hahn; H. Hamagaki; J. Hanks; K. Hashimoto; E. Haslum; R. Hayano; T.K. Hemmick; T. Hester; X. He; J.C. Hill; A. Hodges; R.S. Hollis; K. Homma; B. Hong; T. Horaguchi; Y. Hori; T. Ichihara; H. Iinuma; Y. Ikeda; J. Imrek; M. Inaba; A. Iordanova; D. Isenhower; M. Issah; D. Ivanishchev; B.V. Jacak; M. Javani; X. Jiang; Z. Ji; B.M. Johnson; K.S. Joo; D. Jouan; D.S. Jumper; J. Kamin; S. Kaneti; B.H. Kang; J.H. Kang; J.S. Kang; J. Kapustinsky; K. Karatsu; M. Kasai; G. Kasza; D. Kawall; A.V. Kazantsev; T. Kempel; A. Khanzadeev; K.M. Kijima; B.I. Kim; C. Kim; D.J. Kim; E.-J. Kim; H.J. Kim; K.-B. Kim; Y.-J. Kim; Y.K. Kim; D. Kincses; E. Kinney; Á. Kiss; E. Kistenev; J. Klatsky; D. Kleinjan; P. Kline; Y. Komatsu; B. Komkov; J. Koster; D. Kotchetkov; D. Kotov; L. Kovács; F. Krizek; A. Král; G.J. Kunde; K. Kurita; M. Kurosawa; Y. Kwon; G.S. Kyle; Y.S. Lai; J.G. Lajoie; A. Lebedev; B. Lee; D.M. Lee; J. Lee; K.B. Lee; K.S. Lee; S.H. Lee; S.R. Lee; M.J. Leitch; M.A.L. Leite; M. Leitgab; B. Lewis; S.H. Lim; L.A. Linden Levy; M.X. Liu; S. Lökös; D.A. Loomis; B. Love; C.F. Maguire; Y.I. Makdisi; M. Makek; A. Manion; V.I. Manko; E. Mannel; S. Masumoto; M. McCumber; P.L. McGaughey; D. McGlinchey; C. McKinney; M. Mendoza; B. Meredith; W.J. Metzger; Y. Miake; T. Mibe; A.C. Mignerey; A. Milov; D.K. Mishra; J.T. Mitchell; M. Mitrankova; Iu. Mitrankov; Y. Miyachi; S. Miyasaka; A.K. Mohanty; S. Mohapatra; H.J. Moon; D.P. Morrison; S. Motschwiller; T.V. Moukhanova; B. Mulilo; T. Murakami; J. Murata; A. Mwai; T. Nagae; S. Nagamiya; J.L. Nagle; M.I. Nagy; I. Nakagawa; Y. Nakamiya; K.R. Nakamura; T. Nakamura; K. Nakano; C. Nattrass; A. Nederlof; M. Nihashi; R. Nouicer; T. Novák; N. Novitzky; G. Nukazuka; A.S. Nyanin; E. O'Brien; C.A. Ogilvie; K. Okada; M. Orosz; A. Oskarsson; M. Ouchida; K. Ozawa; R. Pak; V. Pantuev; V. Papavassiliou; B.H. Park; I.H. Park; J.S. Park; S. Park; S.K. Park; L. Patel; S.F. Pate; H. Pei; J.-C. Peng; H. Pereira; D. Yu. Peressounko; R. Petti; C. Pinkenburg; R.P. Pisani; M. Potekhin; M. Proissl; M.L. Purschke; H. Qu; J. Rak; I. Ravinovich; K.F. Read; D. Reynolds; V. Riabov; Y. Riabov; E. Richardson; D. Richford; D. Roach; G. Roche; S.D. Rolnick; M. Rosati; B. Sahlmueller; N. Saito; T. Sakaguchi; V. Samsonov; M. Sano; M. Sarsour; S. Sawada; K. Sedgwick; R. Seidl; A. Seleznev; A. Sen; R. Seto; D. Sharma; I. Shein; T.-A. Shibata; K. Shigaki; M. Shimomura; K. Shoji; P. Shukla; A. Sickles; C.L. Silva; D. Silvermyr; K.S. Sim; 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; E. Stenlund; M. Stepanov; A. Ster; S.P. Stoll; T. Sugitate; A. Sukhanov; J. Sun; Z. Sun; J. Sziklai; E.M. Takagui; A. Takahara; A. Taketani; Y. Tanaka; S. Taneja; K. Tanida; M.J. Tannenbaum; S. Tarafdar; A. Taranenko; E. Tennant; H. Themann; T. Todoroki; L. Tomášek; M. Tomášek; H. Torii; R.S. Towell; I. Tserruya; Y. Tsuchimoto; T. Tsuji; B. Ujvari; C. Vale; H.W. Van Hecke; M. Vargyas; E. Vazquez-Zambrano; A. Veicht; J. Velkovska; M. Virius; A. Vossen; V. Vrba; E. Vznuzdaev; R. Vértesi; X.R. Wang; D. Watanabe; K. Watanabe; Y. Watanabe; Y.S. Watanabe; F. Wei; R. Wei; S.N. White; D. Winter; S. Wolin; C.L. Woody; M. Wysocki; B. Xia; Y.L. Yamaguchi; R. Yang; A. Yanovich; J. Ying; S. Yokkaichi; I. Younus; Z. You; I.E. Yushmanov; W.A. Zajc; A. Zelenski
The PHENIX experiment measured the centrality dependence of two-pion Bose-Einstein correlation functions in sNN=200GeV Au+Au collisions at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The data are well represented by Lévy-stable source distributions. The extracted source parameters are the correlation-strength parameter λ, the Lévy index of stability α, and the Lévy-scale parameter R as a function of transverse mass mT and centrality. The λ(mT) parameter is constant at larger values of mT, but decreases as mT decreases. The Lévy-scale parameter R(mT) decreases with mT and exhibits proportionality to the length scale of the nuclear overlap region. The Lévy exponent α(mT) is independent of mT within uncertainties in each investigated centrality bin, but shows a clear centrality dependence. At all centralities, the Lévy exponent α is significantly different from that of Gaussian (α=2) or Cauchy (α=1) source distributions. Comparisons to the predictions of Monte-Carlo simulations of resonance-decay chains show that, in all but the most peripheral centrality class (50%-60%), the obtained results are inconsistent with the measurements, unless a significant reduction of the in-medium mass of the η′ meson is included. In each centrality class, the best value of the in-medium η′ mass is compared to the mass of the η meson, as well as to several theoretical predictions that consider restoration of UA(1) symmetry in hot hadronic matter. © 2024 American Physical Society.
Charm- and bottom-quark production in Au+Au collisions at sNN =200 GeV
(American Physical Society, 2024) N.J. Abdulameer; U. Acharya; A. Adare; C. Aidala; N.N. Ajitanand; Y. Akiba; M. Alfred; N. Apadula; H. Asano; B. Azmoun; V. Babintsev; M. Bai; N.S. Bandara; B. Bannier; K.N. Barish; S. Bathe; A. Bazilevsky; M. Beaumier; S. Beckman; R. Belmont; A. Berdnikov; Y. Berdnikov; L. Bichon; B. Blankenship; D.S. Blau; J.S. Bok; V. Borisov; K. Boyle; M.L. Brooks; J. Bryslawskyj; V. Bumazhnov; S. Campbell; V. Canoa Roman; C.-H. Chen; M. Chiu; C.Y. Chi; I.J. Choi; J.B. Choi; T. Chujo; Z. Citron; M. Connors; R. Corliss; Y. Corrales Morales; M. Csanád; T. Csörgo; T.W. Danley; A. Datta; M.S. Daugherity; G. David; C.T. Dean; K. Deblasio; K. Dehmelt; A. Denisov; A. Deshpande; E.J. Desmond; A. Dion; P.B. Diss; J.H. Do; V. Doomra; A. Drees; K.A. Drees; J.M. Durham; A. Durum; A. Enokizono; R. Esha; B. Fadem; W. Fan; N. Feege; D.E. Fields; M. Finger; D. Firak; D. Fitzgerald; S.L. Fokin; J.E. Frantz; A. Franz; A.D. Frawley; P. Gallus; C. Gal; P. Garg; H. Ge; M. Giles; F. Giordano; A. Glenn; Y. Goto; N. Grau; S.V. Greene; M. Grosse Perdekamp; T. Gunji; 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; T.K. Hemmick; X. He; J.C. Hill; A. Hodges; R.S. Hollis; K. Homma; B. Hong; T. Hoshino; N. Hotvedt; J. Huang; K. Imai; M. Inaba; A. Iordanova; D. Isenhower; D. Ivanishchev; B.V. Jacak; M. Jezghani; X. Jiang; Z. Ji; B.M. Johnson; D. Jouan; D.S. Jumper; S. Kanda; J.H. Kang; D. Kawall; A.V. Kazantsev; J.A. Key; V. Khachatryan; A. Khanzadeev; A. Khatiwada; B. Kimelman; C. Kim; D.J. Kim; E.-J. Kim; G.W. Kim; M. Kim; T. Kim; D. Kincses; A. Kingan; E. Kistenev; R. Kitamura; J. Klatsky; D. Kleinjan; P. Kline; T. Koblesky; B. Komkov; D. Kotov; L. Kovacs; B. Kurgyis; K. Kurita; M. Kurosawa; Y. Kwon; J.G. Lajoie; D. Larionova; A. Lebedev; S. Lee; S.H. Lee; M.J. Leitch; N.A. Lewis; S.H. Lim; M.X. Liu; X. Li; X. Li; D.A. Loomis; D. Lynch; S. Lökös; 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; A.C. Mignerey; A. Milov; D.K. Mishra; J.T. Mitchell; M. Mitrankova; Iu. Mitrankov; S. Miyasaka; S. Mizuno; A.K. Mohanty; M.M. Mondal; P. Montuenga; T. Moon; D.P. Morrison; T.V. Moukhanova; A. Muhammad; B. Mulilo; T. Murakami; J. Murata; A. Mwai; K. Nagashima; J.L. Nagle; M.I. Nagy; I. Nakagawa; H. Nakagomi; K. Nakano; C. Nattrass; S. Nelson; P.K. Netrakanti; T. Niida; S. Nishimura; R. Nouicer; N. Novitzky; T. Novák; G. Nukazuka; A.S. Nyanin; E. O'Brien; C.A. Ogilvie; J. Oh; J.D. Orjuela Koop; M. Orosz; J.D. Osborn; A. Oskarsson; K. Ozawa; R. Pak; V. Pantuev; V. Papavassiliou; J.S. Park; S. Park; 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; C. Pinkenburg; R. Pinson; R.P. Pisani; M. Potekhin; A. Pun; M.L. Purschke; P.V. Radzevich; J. Rak; N. Ramasubramanian; B.J. Ramson; I. Ravinovich; K.F. Read; D. Reynolds; V. Riabov; Y. Riabov; D. Richford; T. Rinn; S.D. Rolnick; M. Rosati; Z. Rowan; J.G. Rubin; J. Runchey; B. Sahlmueller; N. Saito; T. Sakaguchi; H. Sako; V. Samsonov; M. Sarsour; S. Sato; B. Schaefer; B.K. Schmoll; K. Sedgwick; R. Seidl; A. Sen; R. Seto; P. Sett; A. Sexton; D. Sharma; I. Shein; M. Shibata; T.-A. Shibata; K. Shigaki; M. Shimomura; Z. Shi; P. Shukla; A. Sickles; C.L. Silva; D. Silvermyr; B.K. Singh; C.P. Singh; V. Singh; M. Slunečka; K.L. Smith; M. Snowball; 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; Z. Sun; J. Sziklai; R. Takahama; A. Taketani; K. Tanida; M.J. Tannenbaum; S. Tarafdar; A. Taranenko; R. Tieulent; A. Timilsina; T. Todoroki; M. Tomášek; C.L. Towell; R. Towell; I. Tserruya; Y. Ueda; B. Ujvari; H.W. Van Hecke; J. Velkovska; M. Virius; V. Vrba; X.R. Wang; Z. Wang; Y. Watanabe; Y.S. Watanabe; F. Wei; A.S. White; C.P. Wong; C.L. Woody; M. Wysocki; B. Xia; L. Xue; S. Yalcin; Y.L. Yamaguchi; A. Yanovich; I. Yoon; J.H. Yoo; I.E. Yushmanov; H. Yu; W.A. Zajc; A. Zelenski; S. Zhou; L. Zou
The invariant yield of electrons from open-heavy-flavor decays for 1
Identified charged-hadron production in p+Al, He 3 +Au, and Cu+Au collisions at sNN =200 GeV and in U+ U collisions at sNN =193 GeV
(American Physical Society, 2024) 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; D. 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. Csörgo; 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. 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; S. Lökös; D.A. Loomis; K. Lovasz; D. Lynch; 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; Iu. Mitrankov; M. Mitrankova; 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; T. Novák; N. Novitzky; 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; 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
The PHENIX experiment has performed a systematic study of identified charged-hadron (π±, K±, p, p¯) production at midrapidity in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. Identified charged-hadron invariant transverse-momentum (pT) and transverse-mass (mT) 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 and U+U) and small (p+Al and He3+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 a factor of ≈2 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 (RAB) are also presented. Enhancement of proton RAB values over meson RAB values was observed in central He3+Au, Cu+Au, and U+U collisions. The proton RAB values measured in the p+Al collision system were found to be consistent with RAB values of φ, π±, K±, and π0 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. © 2024 American Physical Society.
Jet modification via π0 -hadron correlations in Au+Au collisions at SNN =200 GeV
(American Physical Society, 2024) N.J. Abdulameer; U. Acharya; A. Adare; S. Afanasiev; C. Aidala; N.N. Ajitanand; Y. Akiba; H. Al-Bataineh; J. Alexander; M. Alfred; K. Aoki; N. Apadula; L. Aphecetche; J. Asai; H. Asano; E.T. Atomssa; R. Averbeck; T.C. Awes; B. Azmoun; V. Babintsev; M. Bai; G. Baksay; L. Baksay; A. Baldisseri; N.S. Bandara; B. Bannier; K.N. Barish; P.D. Barnes; B. Bassalleck; A.T. Basye; S. Bathe; S. Batsouli; V. Baublis; C. Baumann; A. Bazilevsky; M. Beaumier; S. Beckman; S. Belikov; R. Belmont; R. Bennett; A. Berdnikov; Y. Berdnikov; L. Bichon; A.A. Bickley; B. Blankenship; D.S. Blau; J.G. Boissevain; J.S. Bok; H. Borel; V. Borisov; K. Boyle; M.L. Brooks; J. Bryslawskyj; H. Buesching; V. Bumazhnov; G. Bunce; S. Butsyk; C.M. Camacho; S. Campbell; B.S. Chang; W.C. Chang; J.L. Charvet; C.-H. Chen; D. Chen; S. Chernichenko; M. Chiu; C.Y. Chi; I.J. Choi; J.B. Choi; R.K. Choudhury; T. Chujo; P. Chung; A. Churyn; V. Cianciolo; Z. Citron; B.A. Cole; M. Connors; P. Constantin; R. Corliss; M. Csanád; T. Csörgo; D. D'Enterria; T. Dahms; S. Dairaku; T.W. Danley; K. Das; A. Datta; M.S. Daugherity; G. David; K. Deblasio; K. Dehmelt; A. Denisov; A. Deshpande; E.J. Desmond; O. Dietzsch; A. Dion; P.B. Diss; M. Donadelli; V. Doomra; J.H. Do; O. Drapier; A. Drees; K.A. Drees; A.K. Dubey; J.M. Durham; A. Durum; D. Dutta; V. Dzhordzhadze; Y.V. Efremenko; F. Ellinghaus; H. En'Yo; T. Engelmore; A. Enokizono; R. Esha; K.O. Eyser; B. Fadem; N. Feege; D.E. Fields; M. Finger; D. Firak; D. Fitzgerald; F. Fleuret; S.L. Fokin; Z. Fraenkel; J.E. Frantz; A. Franz; A.D. Frawley; K. Fujiwara; Y. Fukao; T. Fusayasu; P. Gallus; C. Gal; P. Garg; I. Garishvili; H. Ge; F. Giordano; A. Glenn; H. Gong; M. Gonin; J. Gosset; Y. Goto; R. Granier De Cassagnac; N. Grau; S.V. Greene; M. Grosse Perdekamp; T. Gunji; T. Guo; H.-A. Gustafsson; T. Hachiya; A. Hadj Henni; J.S. Haggerty; K.I. Hahn; H. Hamagaki; H.F. Hamilton; J. Hanks; R. Han; S.Y. Han; E.P. Hartouni; K. Haruna; S. Hasegawa; T.O.S. Haseler; K. Hashimoto; E. Haslum; R. Hayano; M. Heffner; T.K. Hemmick; T. Hester; X. He; J.C. Hill; A. Hodges; M. Hohlmann; R.S. Hollis; W. Holzmann; K. Homma; B. Hong; T. Horaguchi; D. Hornback; T. Hoshino; N. Hotvedt; J. Huang; T. Ichihara; R. Ichimiya; H. Iinuma; Y. Ikeda; K. Imai; J. Imrek; M. Inaba; A. Iordanova; D. Isenhower; M. Ishihara; T. Isobe; M. Issah; A. Isupov; D. Ivanishchev; B.V. Jacak; M. Jezghani; X. Jiang; J. Jin; Z. Ji; B.M. Johnson; K.S. Joo; D. Jouan; D.S. Jumper; F. Kajihara; S. Kametani; N. Kamihara; J. Kamin; S. Kanda; J.H. Kang; J. Kapustinsky; D. Kawall; A.V. Kazantsev; T. Kempel; J.A. Key; V. Khachatryan; A. Khanzadeev; K.M. Kijima; J. Kikuchi; B. Kimelman; B.I. Kim; C. Kim; D.H. Kim; D.J. Kim; E. Kim; E.-J. Kim; G.W. Kim; M. Kim; S.H. Kim; E. Kinney; K. Kiriluk; Á. Kiss; E. Kistenev; R. Kitamura; J. Klatsky; J. Klay; C. Klein-Boesing; D. Kleinjan; P. Kline; T. Koblesky; L. Kochenda; B. Komkov; M. Konno; J. Koster; D. Kotov; L. Kovacs; A. Kozlov; A. Kravitz; A. Král; G.J. Kunde; B. Kurgyis; K. Kurita; M. Kurosawa; M.J. Kweon; Y. Kwon; G.S. Kyle; Y.S. Lai; J.G. Lajoie; D. Layton; A. Lebedev; D.M. Lee; K.B. Lee; S. Lee; S.H. Lee; T. Lee; M.J. Leitch; M.A.L. Leite; B. Lenzi; P. Liebing; S.H. Lim; A. Litvinenko; H. Liu; M.X. Liu; T. Liška; X. Li; S. Lokos; D.A. Loomis; B. Love; D. Lynch; C.F. Maguire; Y.I. Makdisi; M. Makek; A. Malakhov; M.D. Malik; A. Manion; V.I. Manko; E. Mannel; Y. Mao; H. Masui; F. Matathias; L. Mašek; M. McCumber; P.L. McGaughey; D. McGlinchey; C. McKinney; N. Means; A. Meles; M. Mendoza; B. Meredith; Y. Miake; A.C. Mignerey; P. Mikeš; K. Miki; A. Milov; D.K. Mishra; M. Mishra; J.T. Mitchell; M. Mitrankova; Iu. Mitrankov; S. Miyasaka; S. Mizuno; A.K. Mohanty; P. Montuenga; T. Moon; Y. Morino; A. Morreale; D.P. Morrison; T.V. Moukhanova; D. Mukhopadhyay; B. Mulilo; T. Murakami; J. Murata; A. Mwai; S. Nagamiya; K. Nagashima; J.L. Nagle; M. Naglis; M.I. Nagy; I. Nakagawa; H. Nakagomi; Y. Nakamiya; T. Nakamura; K. Nakano; C. Nattrass; P.K. Netrakanti; J. Newby; M. Nguyen; T. Niida; S. Nishimura; R. Nouicer; N. Novitzky; T. Novák; G. Nukazuka; A.S. Nyanin; E. O'Brien; S.X. Oda; C.A. Ogilvie; K. Okada; M. Oka; Y. Onuki; J.D. Orjuela Koop; M. Orosz; J.D. Osborn; A. Oskarsson; M. Ouchida; K. Ozawa; R. Pak; A.P.T. Palounek; V. Pantuev; V. Papavassiliou; J. Park; S. Park; W.J. Park; M. Patel; S.F. Pate; H. Pei; J.-C. Peng; H. Pereira; D.V. Perepelitsa; G.D.N. Perera; V. Peresedov; D.Yu. Peressounko; J. Perry; R. Petti; C. Pinkenburg; R. Pinson; R.P. Pisani; M. Potekhin; M.L. Purschke; A.K. Purwar; H. Qu; A. Rakotozafindrabe; J. Rak; B.J. Ramson; I. Ravinovich; K.F. Read; S. Rembeczki; K. Reygers; D. Reynolds; V. Riabov; Y. Riabov; D. Richford; T. Rinn; D. Roach; G. Roche; S.D. Rolnick; M. Rosati; S.S.E. Rosendahl; P. Rosnet; Z. Rowan; J.G. Rubin; P. Rukoyatkin; P. RuŽička; V.L. Rykov; B. Sahlmueller; N. Saito; T. Sakaguchi; S. Sakai; K. Sakashita; H. Sako; V. Samsonov; M. Sarsour; S. Sato; T. Sato; S. Sawada; B. Schaefer; B.K. Schmoll; K. Sedgwick; J. Seele; R. Seidl; A.Yu. Semenov; V. Semenov; A. Sen; R. Seto; P. Sett; A. Sexton; D. Sharma; I. Shein; Z. Shi; T.-A. Shibata; K. Shigaki; M. Shimomura; K. Shoji; P. Shukla; A. Sickles; C.L. Silva; D. Silvermyr; C. Silvestre; K.S. Sim; B.K. Singh; C.P. Singh; V. Singh; M. Slunečka; K.L. Smith; M. Snowball; A. Soldatov; R.A. Soltz; W.E. Sondheim; S.P. Sorensen; I.V. Sourikova; F. Staley; P.W. Stankus; E. Stenlund; M. Stepanov; A. Ster; S.P. Stoll; T. Sugitate; C. Suire; A. Sukhanov; T. Sumita; J. Sun; Z. Sun; J. Sziklai; E.M. Takagui; A. Taketani; R. Tanabe; Y. Tanaka; K. Tanida; M.J. Tannenbaum; S. Tarafdar; A. Taranenko; P. Tarján; H. Themann; T.L. Thomas; R. Tieulent; A. Timilsina; T. Todoroki; M. Togawa; A. Toia; Y. Tomita; L. Tomášek; M. Tomášek; H. Torii; C.L. Towell; R. Towell; V.-N. Tram; I. Tserruya; Y. Tsuchimoto; B. Ujvari; C. Vale; H. Valle; H.W. Van Hecke; A. Veicht; J. Velkovska; A.A. Vinogradov; M. Virius; V. Vrba; E. Vznuzdaev; R. Vértesi; X.R. Wang; Y. Watanabe; Y.S. Watanabe; F. Wei; J. Wessels; A.S. White; S.N. White; D. Winter; C.P. Wong; C.L. Woody; M. Wysocki; B. Xia; W. Xie; L. Xue; S. Yalcin; Y.L. Yamaguchi; K. Yamaura; R. Yang; A. Yanovich; J. Ying; S. Yokkaichi; I. Yoon; J.H. Yoo; G.R. Young; I. Younus; I.E. Yushmanov; H. Yu; W.A. Zajc; O. Zaudtke; A. Zelenski; C. Zhang; S. Zhou; L. Zolin; L. Zou
High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4-12 GeV/c and 0.5-7 GeV/c, respectively, have been measured by the PHENIX experiment in 2014 for Au+Au collisions at sNN=200 GeV. Suppression is observed in the yield of high-momentum jet fragments opposite the trigger particle, which indicates jet suppression stemming from in-medium partonic energy loss, while enhancement is observed for low-momentum particles. The ratio and differences between the yield in Au+Au collisions and p+p collisions, IAA and ΔAA, as a function of the trigger-hadron azimuthal separation, Δφ, are measured for the first time at the BNL Relativistic Heavy Ion Collider. These results better quantify how the yield of low-pT associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects. © 2024 American Physical Society.
Nonprompt direct-photon production in Au+Au collisions at sNN =200 GeV
(American Physical Society, 2024) N.J. Abdulameer; U. Acharya; A. Adare; C. Aidala; N.N. Ajitanand; Y. Akiba; M. Alfred; N. Apadula; H. Asano; B. Azmoun; V. Babintsev; M. Bai; N.S. Bandara; B. Bannier; K.N. Barish; S. Bathe; A. Bazilevsky; M. Beaumier; S. Beckman; R. Belmont; A. Berdnikov; Y. Berdnikov; L. Bichon; B. Blankenship; D.S. Blau; J.S. Bok; V. Borisov; K. Boyle; M.L. Brooks; J. Bryslawskyj; V. Bumazhnov; S. Campbell; V. Canoa Roman; C.-H. Chen; M. Chiu; C.Y. Chi; I.J. Choi; J.B. Choi; T. Chujo; Z. Citron; M. Connors; R. Corliss; Y. Corrales Morales; M. Csanád; T. Csörgo; T.W. Danley; A. Datta; M.S. Daugherity; G. David; C.T. Dean; K. Deblasio; K. Dehmelt; A. Denisov; A. Deshpande; E.J. Desmond; A. Dion; P.B. Diss; J.H. Do; V. Doomra; A. Drees; K.A. Drees; J.M. Durham; A. Durum; A. Enokizono; R. Esha; 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; P. Gallus; C. Gal; P. Garg; H. Ge; M. Giles; F. Giordano; A. Glenn; Y. Goto; N. Grau; S.V. Greene; M. Grosse Perdekamp; T. Gunji; T. Guo; 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; T.K. Hemmick; X. He; J.C. Hill; A. Hodges; R.S. Hollis; K. Homma; B. Hong; T. Hoshino; N. Hotvedt; J. Huang; K. Imai; M. Inaba; A. Iordanova; D. Isenhower; D. Ivanishchev; B.V. Jacak; M. Jezghani; X. Jiang; Z. Ji; B.M. Johnson; D. Jouan; D.S. Jumper; S. Kanda; J.H. Kang; D. Kawall; A.V. Kazantsev; J.A. Key; V. Khachatryan; A. Khanzadeev; A. Khatiwada; B. Kimelman; C. Kim; D.J. Kim; E.-J. Kim; G.W. Kim; M. Kim; T. Kim; D. Kincses; A. Kingan; E. Kistenev; R. Kitamura; J. Klatsky; D. Kleinjan; P. Kline; T. Koblesky; B. Komkov; D. Kotov; L. Kovacs; B. Kurgyis; K. Kurita; M. Kurosawa; Y. Kwon; J.G. Lajoie; D. Larionova; A. Lebedev; S. Lee; S.H. Lee; M.J. Leitch; N.A. Lewis; S.H. Lim; M.X. Liu; X. Li; X. Li; D.A. Loomis; D. Lynch; S. Lökös; 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; A.C. Mignerey; A. Milov; D.K. Mishra; J.T. Mitchell; M. Mitrankova; Iu. Mitrankov; S. Miyasaka; S. Mizuno; A. Mohamed; A.K. Mohanty; M.M. Mondal; P. Montuenga; T. Moon; D.P. Morrison; T.V. Moukhanova; B. Mulilo; T. Murakami; J. Murata; A. Mwai; K. Nagashima; J.L. Nagle; M.I. Nagy; I. Nakagawa; H. Nakagomi; K. Nakano; C. Nattrass; S. Nelson; P.K. Netrakanti; T. Niida; S. Nishimura; R. Nouicer; N. Novitzky; T. Novák; G. Nukazuka; A.S. Nyanin; E. O'Brien; C.A. Ogilvie; J.D. Orjuela Koop; M. Orosz; J.D. Osborn; A. Oskarsson; K. Ozawa; R. Pak; V. Pantuev; V. Papavassiliou; J.S. Park; S. Park; 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; C. Pinkenburg; R. Pinson; R.P. Pisani; M. Potekhin; A. Pun; M.L. Purschke; P.V. Radzevich; J. Rak; N. Ramasubramanian; B.J. Ramson; I. Ravinovich; K.F. Read; D. Reynolds; V. Riabov; Y. Riabov; D. Richford; T. Rinn; S.D. Rolnick; M. Rosati; Z. Rowan; J.G. Rubin; J. Runchey; B. Sahlmueller; N. Saito; T. Sakaguchi; H. Sako; V. Samsonov; M. Sarsour; S. Sato; B. Schaefer; B.K. Schmoll; K. Sedgwick; R. Seidl; A. Sen; R. Seto; P. Sett; A. Sexton; D. Sharma; I. Shein; Z. Shi; M. Shibata; 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; M. Snowball; 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; Z. Sun; J. Sziklai; R. Takahama; A. Taketani; K. Tanida; M.J. Tannenbaum; S. Tarafdar; A. Taranenko; R. Tieulent; A. Timilsina; T. Todoroki; M. Tomášek; C.L. Towell; R. Towell; I. Tserruya; Y. Ueda; B. Ujvari; H.W. Van Hecke; J. Velkovska; M. Virius; V. Vrba; X.R. Wang; Z. Wang; Y. Watanabe; Y.S. Watanabe; F. Wei; A.S. White; C.P. Wong; C.L. Woody; M. Wysocki; B. Xia; L. Xue; S. Yalcin; Y.L. Yamaguchi; A. Yanovich; Z. Yin; I. Yoon; J.H. Yoo; I.E. Yushmanov; H. Yu; W.A. Zajc; A. Zelenski; S. Zhou; L. Zou
The measurement of the direct-photon spectrum from Au+Au collisions at sNN=200 GeV is presented by the PHENIX Collaboration using the external-photon-conversion technique for 0%-93% central collisions in a transverse-momentum (pT) range of 0.8-10 GeV/c. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for pT<6GeV/c. Nonprompt direct photons are measured by subtracting the prompt component, which is estimated as Ncoll-scaled direct photons from p+p collisions at 200 GeV, from the direct-photon spectrum. Results are obtained for 0.8