Dielectron Azimuthal Anisotropy At Mid-Rapidity In Au Plus Au Collisions At Root S(Nn)=200 Gev
L. Adamczyk,J. K. Adkins,G. Agakishiev,M. M. Aggarwal,Z. Ahammed,I. Alekseev,J. Alford,C. D. Anson,A. Aparin,D. Arkhipkin,E. C. Aschenauer,G. S. Averichev,A. Banerjee,D. R. Beavis,R. Bellwied,A. Bhasin,A. K. Bhati,P. Bhattarai,H. Bichsel,J. Bielcik,J. Bielcikova,L. C. Bland,I. G. Bordyuzhin,W. Borowski,J. Bouchet,A. V. Brandin,S. G. Brovko,S. Bueltmann,I. Bunzarov,T. P. Burton,J. Butterworth,H. Caines,M. Calderon De La Barca Sanchez,D. Cebra,R. Cendejas,M. C. Cervantes,P. Chaloupka,Z. Chang,S. Chattopadhyay,H. F. Chen,J. H. Chen,L. Chen,J. Cheng,M. Cherney,A. Chikanian,W. Christie,J. Chwastowski,M. J. M. Codrington,G. Contin,J. G. Cramer,H. J. Crawford,X. Cui,S. Das,A. Davila Leyva,L. C. De Silva,R. R. Debbe,T. G. Dedovich,J. Deng,A. A. Derevschikov,R. Derradi De Souza,S. Dhamija,B. Di Ruzza,L. Didenko,C. Dilks,F. Ding,P. Djawotho,X. Dong,J. L. Drachenberg,J. E. Draper,C. M. Du,L. E. Dunkelberger,J. C. Dunlop,L. G. Efimov,J. Engelage,K. S. Engle,G. Eppley,L. Eun,O. Evdokimov,O. Eyser,R. Fatemi,S. Fazio,J. Fedorisin,P. Filip,E. Finch,Y. Fisyak,C. E. Flores,C. A. Gagliardi,D. R. Gangadharan,D. Garand,F. Geurts,A. Gibson,M. Girard,S. Gliske,L. Greiner,D. Grosnick,D. S. Gunarathne,Y. Guo,A. Gupta,S. Gupta,W. Guryn,B. Haag,A. Hamed,L-X. Han,R. Haque,J. W. Harris,S. Heppelmann,A. Hirsch,G. W. Hoffmann,D. J. Hofman,S. Horvat,B. Huang,H. Z. Huang,X. Huang,P. Huck,T. J. Humanic,G. Igo,W. W. Jacobs,H. Jang,E. G. Judd,S. Kabana,D. Kalinkin,K. Kang,K. Kauder,H. W. Ke,D. Keane,A. Kechechyan,A. Kesich,Z. H. Khan,D. P. Kikola,I. Kisel,A. Kisiel,D. D. Koetke,T. Kollegger,J. Konzer,I. Koralt,L. Kotchenda,A. F. Kraishan,P. Kravtsov,K. Krueger,I. Kulakov,L. Kumar,R. A. Kycia,M. A. C. Lamont,J. M. Landgraf,K. D. Landry,J. Lauret,A. Lebedev,R. Lednicky,J. H. Lee,M. J. Levine,C. Li,W. Li,X. Li,X. Li,Y. Li,Z. M. Li,M. A. Lisa,F. Liu,T. Ljubicic,W. J. Llope,M. Lomnitz,R. S. Longacre,X. Luo,G. L. Ma,Y. G. Ma,D. M. M. D. Madagodagettige Don,D. P. Mahapatra,R. Majka,S. Margetis,C. Markert,H. Masui,H. S. Matis,D. Mcdonald,T. S. Mcshane,N. G. Minaev,S. Mioduszewski,B. Mohanty,M. M. Mondal,D. A. Morozov,M. K. Mustafa,B. K. Nandi,Md. Nasim,T. K. Nayak,J. M. Nelson,G. Nigmatkulov,L. V. Nogach,S. Y. Noh,J. Novak,S. B. Nurushev,G. Odyniec,A. Ogawa,K. Oh,A. Ohlson,V. Okorokov,E. W. Oldag,D. L. Olvitt,M. Pachr,B. S. Page,S. K. Pal,Y. X. Pan,Y. Pandit,Y. Panebratsev,T. Pawlak,B. Pawlik,H. Pei,C. Perkins,W. Peryt,P. Pile,M. Planinic,J. Pluta,N. Poljak,J. Porter,A. M. Poskanzer,N. K. Pruthi,M. Przybycien,P. R. Pujahari,J. Putschke,H. Qiu,A. Quintero,S. Ramachandran,R. Raniwala,S. Raniwala,R. L. Ray,C. K. Riley,H. G. Ritter,J. B. Roberts,O. V. Rogachevskiy,J. L. Romero,J. F. Ross,A. Roy,L. Ruan,J. Rusnak,O. Rusnakova,N. R. Sahoo,P. K. Sahu,I. Sakrejda,S. Salur,J. Sandweiss,E. Sangaline,A. Sarkar,J. Schambach,R. P. Scharenberg,A. M. Schmah,W. B. Schmidke,N. Schmitz,J. Seger,P. Seyboth,N. Shah,E. Shahaliev,P. V. Shanmuganathan,M. Shao,B. Sharma,W. Q. Shen,S. S. Shi,Q. Y. Shou,E. P. Sichtermann,R. N. Singaraju,M. J. Skoby,D. Smirnov,N. Smirnov,D. Solanki,P. Sorensen,H. M. Spinka,B. Srivastava,T. D. S. Stanislaus,J. R. Stevens,R. Stock,M. Strikhanov,B. Stringfellow,M. Sumbera,X. Sun,X. M. Sun,Y. Sun,Z. Sun,B. Surrow,D. N. Svirida,T. J. M. Symons,M. A. Szelezniak,J. Takahashi,A. H. Tang,Z. Tang,T. Tarnowsky,J. H. Thomas,A. R. Timmins,D. Tlusty,M. Tokarev,S. Trentalange,R. E. Tribble,P. Tribedy,B. A. Trzeciak,O. D. Tsai,J. Turnau,T. Ullrich,D. G. Underwood,G. Van Buren,G. Van Nieuwenhuizen,M. Vandenbroucke,J. A. Vanfossen,R. Varma,G. M. S. Vasconcelos,A. N. Vasiliev,R. Vertesi,F. Videbaek,Y. P. Viyogi,S. Vokal,A. Vossen,M. Wada,F. Wang,G. Wang,H. Wang,J. S. Wang,X. L. Wang,Y. Wang,Y. Wang,G. Webb,J. C. Webb,G. D. Westfall,H. Wieman,S. W. Wissink,R. Witt,Y. F. Wu,Z. Xiao,W. Xie,K. Xin,H. Xu,J. Xu,N. Xu,Q. H. Xu,Y. Xu,Z. Xu,W. Yan,C. Yang,Y. Yang,Y. Yang,Z. Ye,P. Yepes,L. Yi,K. Yip,I-K. Yoo,N. Yu,Y. Zawisza,H. Zbroszczyk,W. Zha,J. B. Zhang,J. L. Zhang,S. Zhang,X. P. Zhang,Y. Zhang,Z. P. Zhang,F. Zhao,J. Zhao,C. Zhong,X. Zhu,Y. H. Zhu,Y. Zoulkarneeva,M. Zyzak
PHYSICAL REVIEW C（2014）
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摘要
We report on the first measurement of the azimuthal anisotropy (v(2)) of dielectrons (e(+)e(-) pairs) at mid-rapidity fromv root s(NN) = 200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse momentum (pT) for different invariant-mass regions. In the mass region M-ee < 1.1 GeV/c(2) the dielectron v(2) measurements are found to be consistent with expectations from pi(0), eta, omega, and phi decay contributions. In the mass region 1.1 < M-ee < 2.9 GeV/c(2), the measured dielectron v(2) is consistent, within experimental uncertainties, with that from the c<(c)over bar> contributions.
