Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector
M. M. Aggarwal,Z. Ahammed,A. V. Alakhverdyants,I. Alekseev,J. Alford,B. Anderson,D. Arkhipkin,G. S. Averichev,J. Balewski,L.S. Barnby,Stephen Baumgart,D. Beavis,R. Bellwied,M. Betancourt,R. R. Betts,A. Bhasin,A. K. Bhati,H. Bichsel,J. Bielčík,J. Bielčíková,B. Biritz,L. C. Bland,B. E. Bonner,J. Bouchet,E. Braidot,A. V. Brandin,A. Bridgeman,E. Bruna,S. Bueltmann,I. Bunzarov,T. P. Burton,Xu Cao,H. Caines,M. Calderón De La Barca Sánchez,O. Catu,D. Cebra,R. Cendejas,M. C. Cervantes,Z. Chajȩcki,P. Chaloupka,S. Chattopadhyay,H. Chen,J. Chen,J. Cheng,M. Cherney,A. Chikanian,Kiwoon Choi,W. Christie,P. Chung,Robert L. Clarke,M. Codrington,R. Corliss,J. Cramer,H. J. Crawford,D. Das,S. Dash,A. Davila Leyva,L. De Silva,R. Debbe,T. G. Dedovich,A. A. Derevschikov,R. Derradi de Souza,L. Didenko,P. Djawotho,S. Dogra,X. Dong,J. L. Drachenberg,J. E. Draper,J. C. Dunlop,M. Dutta Mazumdar,L. G. Efimov,E. Elhalhuli,M. Elnimr,J. Engelage,G. Eppley,B. Erazmus,M. Estienne,L. Eun,O. Evdokimov,P. Fachini,R. Fatemi,J. Fedorišin,R. G. Fersch,P. Filip,E. Finch,V. Fine,Y. Fisyak,C. A. Gagliardi,D. R. Gangadharan,M. S. Ganti,E. García-Solis,A. Geromitsos,F. J. M. Geurts,V. Ghazikhanian,Parthasarathi Ghosh,Y. G. Gorbunov,A. Gordon,O. G. Grebenyuk,D. Grosnick,S. M. Guertin,A. Gupta,N. Gupta,W. Guryn,B. Haag,A. Hamed,L. Han,J. W. Harris,J. P. Hays-Wehle,M. Heinz,S. Heppelmann,A. Hirsch,E. Hjort,Angel Abusleme,G. W. Hoffmann,D. J. Hofman,M. J. Horner,B. Huang,H. Z. Huang,T. J. Humanic,L. Huo,G. Igo,P. Jacobs,W. W. Jacobs,C. Jena,F. Jin,C. R. Jones,P. G. Jones,J. Joseph,E. G. Judd,S. Kabana,K. Kajimoto,K. H. Kang,J. Kapitan,K. Kauder,D. Keane,A. Kechechyan,David Kettler,D. Kikola,J. Kiryluk,A. Kisiel,S. R. Klein,A. G. Knospe,A. Kocoloski,D. Koetke,T. Kollegger,J. Konzer,I. Koralt,L. I. Koroleva,W. Korsch,L. Kotchenda,V. Kouchpil,П. Кравцов,K. Krueger,M. Krůs,L. Kumar,P. Kurnadi,M.A.C. Lamont,J. M. Landgraf,S. LaPointe,J. Lauret,А В Лебедев,R. Lednický,C.-H. Lee,J. Lee,W. A. Leight,M. J. LeVine,C. Li,L. Li,N. Li,W. Li,X. Li,Y. Li,Z. Li,G. Lin,S. J. Lindenbaum,M. A. Lisa,F. Liu,H. Liu,J. Liu,T. Ljubičić,W. J. Llope,R. S. Longacre,W.A. Love,Y. J. Lu,X. Luo,Guoliang Ma,Yugang Ma,D. P. Mahapatra,R. Majka,O. Mall,L. K. Mangotra,R. Manweiler,S. Margetis,C. Markert,H. Masui,H. S. Matis,Yu. Matulenko,D. McDonald,T. S. McShane,A. Meschanin,R. Milner,N. G. Minaev,S. Mioduszewski,A. Mischke,M. Mitrovski,B. Mohanty,M. M. Mondal,B. Morozov,Д. А. Морозов,M. G. Munhoz,B. K. Nandi,C. Nattrass,T. K. Nayak,J. M. Nelson,P. K. Netrakanti,M. J. Ng,L. V. Nogach,SB Nurushev,G. Odyniec,A. Ogawa,В. А. Окороков,E. W. Oldag,D. Olson,M. Pachr,B. S. Page,S. Pal,Y. Pandit,Y. Panebratsev,T. Pawlak,T. Peitzmann,V. Perevoztchikov,C. Perkins,W. Peryt,S. C. Phatak,P. Pile,M. Planinić,M. Płoskoń,J. Pluta,D. Plyku,N. Poljak,A. M. Poskanzer,B. Potukuchi,C. Powell,D. Prindle,C. Pruneau,N. K. Pruthi,P. R. Pujahari,J. Putschke,R. Raniwala,S. Raniwala,R. L. Ray,R. Redwine,RG Reed,H.G. Ritter,J. Roberts,O. V. Rogachevskiy,J. L. Romero,A. Rose,C. Roy,L. Ruan,R. Sahoo,Shuntaro Sakai,I. Sakrejda,T. Sakuma,S. Salur,J. Sandweiss,E. Sangaline,Johann Joachim Schambach,R. P. Scharenberg,N. Schmitz,T. Schuster,J. Seele,J. Seger,I. Selyuzhenkov,P. Seyboth,E. Shahaliev,M. Shao,Monika Sharma,S. S. Shi,E. P. Sichtermann,F. Simon,R. Singaraju,M. J. Skoby,N. Smirnov,P. Sorensen,J. Sowiński,H. M. Spinka,B. Srivastava,T. S. Stanislaus,D. Staszak,J. R. Stevens,R. Stock,M. Strikhanov,B. Stringfellow,A. A. P. Suaide,M. Suarez,Nirpat Subba,M. Šumbera,X. Sun,Yipeng Sun,Z.J. Sun,B. Surrow,D. N. Svirida,T. J. M. Symons,A. Szanto de Toledo,J. Takahashi,A. H. Tang,Z. Tang,L. H. Tarini,T. Tarnowsky,D. Thein,J. P. Thomas,J. Tian,A. R. Timmins,S. Timoshenko,D. Tlusty,M. Tokarev,T.A. Trainor,V. N. Tram,S. Trentalange,R. Tribble,O. D. Tsai,J. Ulery,T. Ullrich,D. Underwood,G. Van Buren,M. van Leeuwen,G. van Nieuwenhuizen,J. A. Vanfossen,R. Varma,G. M.S. Vasconcelos,A. N. Vasiliev,F. Videbæk,Y. P. Viyogi,S. Vokál,S. A. Voloshin,M. Wada,M. Walker,F. Wang,G. Wang,H. Wang,J. Wang,Q. Wang,X. Wang,Y. Wang,G. Webb,J. C. Webb,G. D. Westfall,C. Whitten,H. Wieman,S. W. Wissink,R. Witt,Y. Wu,W. Xie,N. Xu,Q. Xu,W. Xu,Y. Xu,Z. Xu,L. Xue,Y. Yang,P. Yepes,K. Yip,I. K. Yoo,Q. Yue,M. Zawisza,H. Zbroszczyk,W. Zhan,J. Zhang,S. Zhang,W. Zhang,X. Zhang,Y. Zhang,Z. Zhang,J. Zhao,C. Zhong,Jian Zhou,W. Zhou,X. Zhu,Yunru Zhu,R. Zoulkarneev,Y. Zoulkarneeva
APS（2010）
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摘要
Yields, correlation shapes, and mean transverse momenta p(T) of charged particles associated with intermediate-to high-p(T) trigger particles (2.5 < p(T) < 10 GeV/c) in d + Au and Au + Au collisions at root s(NN) = 200 GeV are presented. For associated particles at higher p(T) greater than or similar to 2.5 GeV/c, narrow correlation peaks are seen in d + Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT < 2 GeV/c, a large enhancement of the near- (Delta phi similar to 0) and away-side (Delta phi similar to pi) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d + Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Delta phi similar to pi in central Au + Au collisions.
