Event-plane-dependent dihadron correlations with harmonic $v_n$ subtraction in Au + Au collisions at $\sqrt{s_{NN}}=200$ GeV

H Agakishiev,X Zhu,H M Spinka,B Biritz,M J Skoby,J M Landgraf,Wei Xu,S Heppelmann,J Seger,G Van Nieuwenhuizen,P Chung, W Zhan,Jie Zhao,Z P Zhang,T Sakuma,M J Levine,T P Burton,Ju Hun Lee,H Masui,L C De Silva, R Lednicky,K Kang,L K Mangotra,P Kravtsov,A Sarkar,V Kizka, O G Grebenyuk, S Mioduszewski,P Chaloupka,D G Mcdonald,Nirbhay Kumar Behera,Z M Li,R N Singaraju, A K Bhati, Z Ahammed,W Korsch,M Pachr,T Pawlak,Nuo Xu,C B Powell,A Kechechyan,Ju Bing Zhang, A Mischke,M G Munhoz,R Milner,W A Love,D R Gangadharan, D Olson,Xiao,J Kiryluk, R E Tribble,J L Romero,N R Sahoo,N Poljak, D Cebra,Y Pandit,W Borowski,M Elnimr, M A Lisa,Weifeng Li,J Bouchet,S Vokal, R P Redwine,A Bhasin,A V Brandin,Y F Wu,J Seele,Xiaoming Li,F Simon, Ai Hua Tang,J Alford,T Kollegger,C Anson,R Debbe,Nan Li,H F Chen,G W Hoffmann,P Filip,R Corliss,Yu A Matulenko,D P Kikola,X Z Cai,Matthew Walker,M Ploskon,F J M Geurts,Shuo Zhang, A Rose,Sunil Dogra,A Bridgeman,E P Sichtermann,J Schambach,Qibing Wang,D Keane, S Margetis,S G Brovko,R Derradi De Souza, M C Cervantes,J H Chen,Fang Liu,Y N Gorbunov,J Tian, Shingo Sakai, M Strikhanov,Q H Xu,L Kumar,Guizuo Wang,J R Stevens, J B Roberts, J P Hayswehle,A Szanto De Toledo,S Dash,A Gordon,B Haag,D Thein, N Smirnov,Olga Evdokimov,Hailan Wang,K E Choi, M Cherney,M Planinic, C Markert,Mingwang Shao,T Schuster,D D Koetke,I Koralt,E V Lukashov,H Pei,T D S Stanislaus, D G Underwood,J Takahashi,W W Jacobs,L G Efimov,J Kapitan,D Tlusty,D N Svirida, Jorge Lauret,J C Dunlop, J Bielcik,Yiyong Sun,T G Dedovich, M C Suarez,Tribedy, M Estienne,A N Vasiliev, X L Wang,D A Morozov,X M Sun,A V Alakhverdyants,O Hajkova,J Konzer, A Hirsch, S Kabana,C Jena,M J Betancourt, M L Sharma,S Chattopadhyay,L Kotchenda, Zhenxing Xu,A G Knospe,S W Wissink,T S Mcshane,A A Derevschikov,D Staszak,P R Pujahari,A Schmah,B Stringfellow,Bhaskar Chandra Mohanty,J Joseph,D Prindle,W Witzke,Hui Liu, H Bichsel,I Sakrejda,B Surrow, A Kisiel,L Didenko,H S Matis,D J Hofman,M Calderon De La Barca Sanchez,R Stock,P Yepes,P Djawotho,J Engelage, B Srivastava,Y Fisyak,H Wieman, Yongan Zhang, W Peryt,R Manweiler, Changhui Li, P L Ghosh, J W Harris,K Kauder,H Xu, Zhiyong Sun, J Fedorisin,V Okorokov,W Guryn, L I Koroleva,F Videbaek,O Mall,H Zbroszczyk,I Alekseev,L C Bland, M M Aggarwal,E Bruna,L H Tarini,Q Y Shou, Lin Xue, T J Humanic, S Salur,Feng Wang, J G Cramer,D Kettler,O V Rogachevskiy,J H Thomas, T K Nayak,C Perkins,W Xie, Zhenjun Tang,M Krus, John J Rusnak,Y Zoulkarneeva,B D Anderson,R S Longacre, M Sumbera,V Kouchpil,D Grosnick, Feiming Jin,J S Wang,Jun Cheng,Li Ruan,X Luo,B V K S Potukuchi,D Arkhipkin,G Van Buren,T Ullrich,A Davila Leyva, Xuesen Dong, A R Timmins, S B Nurushev,K Yip, H Caines,S Raniwala, A Chikanian, J Putschke,S Bueltmann,Randall R Reed,M Heinz,N K Pruthi, S M Guertin,Ying Xu, Abhishek Gupta, Lehong Li,L Eun,E Finch,G S Averichev,P Kurnadi,I Selyuzhenkov,Y Panebratsev,D Plyku,Weiping Zhou,S Trentalange,H J Crawford,M M Mondal,O D Tsai,E G Judd,R Zoulkarneev,J C Webb, A Lebedev,M J M Codrington,Lx Han,K Krueger,J A Vanfossen,E Hjort, P Jacobs,E Braidot,R Fatemi,N Schmitz,Yi Wang,Bo Huang,D P Mahapatra,D R Beavis, T Peitzmann,B S Page,R R Betts,E Sangaline,J E Draper,E W Oldag,E Shahaliev,S Lapointe,Lei Chen,T J M Symons,Yuan Yang,L V Nogach,Oh,A Ogawa,C Whitten,S S Shi,M Tokarev,G D Westfall,V Fine,Yunju Lu,Y H Zhu,M Mitrovski,R Varma,V N Tram,Y G Ma,A Hamed, B K Nandi, J Bielcikova,S C Phatak,Geoffrey I Webb,J Pluta,T Ljubicic, R Bellwied,Mac Lamont, C A Gagliardi,Ik Yoo,I Bunzarov,Y P Viyogi,N G Minaev,R G Fersch,G Odyniec, Yixiao Li,J Balewski,N L Subba,P Pile,R Cendejas,W J Llope, R P Scharenberg,G Eppley,Chonggao Zhong,Jun Liu,G Igo,R Majka,S K Pal,G L Ma,X P Zhang,H Z Huang,A Geromitsos,J L Drachenberg,Z Chajecki,A Feng, A M Poskanzer, A Meschanin,S G Steadman, Hairong Qiu,H Ke, R Raniwala, W M Zhang,William Axel Leight,L Huo,M Naglis,T Tarnowsky,G M S Vasconcelos,J Sandweiss,W Christie,Ohlson,Masahisa Wada,M Zawisza,A A P Suaide, B V Morozov,P Seyboth,H G Ritter,P K Netrakanti,Ronald G Witt

PHYSICAL REVIEW C（2014）

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摘要

STAR measurements of dihadron azimuthal correlations (Lambda phi) are reported in midcentral (20-60%) Au + Au collisions at v root sNN = 200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, phi(s) = | phi(1) -psi(EP)|. The elliptic (v(2)), triangular (v(3)), and quadratic (v(4)) flow harmonic backgrounds are subtracted using the zero yield at mini + Au collisions. It is found that a finite near-side (| Delta phi | < pi/2) long-range pseudorapidity correlation (ridge) is present in the in-plane direction (phi(s) similar to 0). The away-side (| Delta phi | > pi/2) correlation shows a modification from d+ Au data, varying with fs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD.

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deuteron,gold,star,quantum chromodynamics,background,flow,elliptic flow

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