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Adamczyk L, Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Banerjee A, Barnovska Z, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Butterworth J, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Chwastowski J, Codrington MJM, Corliss R, Cramer JG, Crawford HJ, Cui X, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derradi de Souza R, Dhamija S, Didenko L, Ding F, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunkelberger LE, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Gliske S, Gorbunov YN, Grebenyuk OG, Grosnick D, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Horvat S, Huang B, Huang HZ, Huck P, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kesich A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MAC, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Luo X, Luszczak A, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Morozov B, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RAN, Olson D, Pachr M, Page BS, Pal SK, Pan YX, Pandit Y, Panebratsev Y, Pawlak T, Pawlik B, Pei H, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Przybycien M, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Riley CK, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma B, Sharma M, Shi SS, Shou QY, Sichtermann EP, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TDS, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AAP, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJM, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Turnau J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA, Varma R, Vasconcelos GMS, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Vossen A, Wada M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xin K, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yi Y, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, Zoulkarneeva Y. Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC. PHYSICAL REVIEW LETTERS 2012; 108:202301. [PMID: 23003142 DOI: 10.1103/physrevlett.108.202301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Indexed: 06/01/2023]
Abstract
STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200 GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% central collisions, a sizable difference is present between the v1(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v1 excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v1 for both pions and protons, none of them can describe v1(y) for pions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v1(y) slopes of protons and antiprotons.
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