Dense-Medium Modifications to Jet-Induced Hadron Pair Distributions inAu+AuCollisions atsNN=200  GeV

S S Adler,M X Liu,M Stepanov,I V Sourikova,M Sivertz,F Staley,S C Johnson,K Reygers,A Hoover,F Matathias,K Kiyoyama,N Kamihara,R Seto,A Kozlov,I J Choi,N Bruner,Y Tanaka,N Tyurin,V Veszprémi,N N Ajitanand,J S Haggerty,T Shiina,V Cianciolo,F Mühlbacher,R S Towell,M J Leitch,K N Barish,A Kiyomichi,M Ishihara,M J Kweon,H Masui,D Pal,R K Choudhury,I Tserruya,A Khanzadeev,D Jouan,H Tsuruoka,B Khachaturov,L Villatte,M Sakai,A Taketani,D J Kim,S Sawada,W C Chang,P Constantin,B M Johnson,S Zhou,C L Woody,D S Brown,P L Mcgaughey,E Kistenev,A Deshpande,D E Fields,J C Hill,R Granier De Cassagnac,P Chand,E O’Brien,K El Chenawi,P Rosnet,I D Ojha,A Isupov,A Denisov,V Samsonov,T Matsumoto,M Ono,R Azmoun,V Semenov,V Papavassiliou,J M Heuser,S Kametani,J Rak,S Butsyk,L Ewell,T Sugitate,H Torii,P Tarján,S Garpman,J Tojo,H Borel,O Dietzsch,W Holzmann,G R Young,W Xie,C P Singh,S Chernichenko,D Dutta,S Afanasiev,C H Kuberg,T Kohama,B D Fox,A Baldisseri,I Ravinovich,S Borenstein,H En’Yo,W Y Jang,D Koehler,D P Morrison,V V Ikonnikov,E M Takagui,M Harvey,K S Sim,K Imai,Y Mao,F Fleuret,A D Frawley,S F Pate,M Grosse Perdekamp,T Chujo,M Chiu,A K Mohanty,A Romana,T Peitzmann,R Amirikas,Y Miake,G Roche,C Pinkenburg,M Gonin,R A Soltz,M Rosati,M Tamai,D M Lee,V Peresedov,E P Hartouni,K Oyama,Y Liu,H J Kim,T Sakaguchi,Y Berdnikov,S K Tuli,X R Wang,A Lebedev,T C Awes,D Kotchetkov,P W Stankus,E Stenlund,J Milan,K Tanida,V Bumazhnov,T E Miller,K Kurita,D W Kim,O Jinnouchi,M Kopytine,Y I Makdisi,J T Mitchell,F Messer,Y Kwon,V Pantuev,Y V Efremenko,R P Pisani,J P Sullivan,M Velkovsky,R Averbeck,K Ozawa,S Bathe,K F Read,V Baublis,Y Watanabe,B Bassalleck,A Drees,I Otterlund,C Zhang,I E Yushmanov,D Mukhopadhyay,D D’Enterria,M Nara,J G Lajoie,T Ichihara,M Heffner,J E Frantz,L Kochenda,H Lim,S Lee,J Velkovska,Z Fraenkel,D Isenhower,G C Mishra,M J Tannenbaum,M E Sadler,E Melnikov,P J Kroon,V Riabov,S Esumi,F K Wohn,A Ster,K Katou,E Vznuzdaev,M Issah,R Hayano,T Nakamura,S Sakai,J M Burward-Hoy,S P Stoll,W Guryn,B Hong,O Drapier,M L Purschke,J Chiba,Y Kuroki,A Bazilevsky,K S Joo,Y Riabov,M Muniruzzaman,A Glenn,R E Mischke,Y Akiba,L Aphecetche,V Kochetkov,S Mioduszewski,R Du Rietz,M Hibino,S Yokkaichi,A Malakhov,J D Tepe,X H Li,G Gogiberidze,G David,S Leckey,A Parmar,A K Purwar,A Durum,A Yanovich,L Sanfratello,K Homma,A Franz,W E Sondheim,W A Zajc,N Grau,S Batsouli,V Babintsev,K Shigaki,J Murata,J Jia,K Okada,H Delagrange,T K Hemmick,S Bhagavatula,J H Kang,H W Van Hecke,N Saito,J M Moss,Y Cobigo,R Lacey,A Litvinenko,J Nystrand,A Enokizono,T Hachiya,E J Desmond,J Choi,H Tydesjö,J Park,J G Boissevain,J L Nagle,H.-Å Gustafsson,B K Nandi,E Kim,R Santo,J Alexander,S H Aronson,S S Ryu,X He,G S Kyle,S Kelly,T L Thomas,L Zolin,X Camard,D H Kim,P D Barnes,A Soldatov,G Bunce,S S Kapoor,J Newby,P Nilsson,H Hamagaki,M L Brooks,M R Shaw,Y Goto,H Buesching,D Bucher,S Nagamiya,T K Shea,A Devismes,A Milov,C L Silva,M Reuter,V Singh,D Silvermyr,C A Ogilvie,Yang Yu ,С Беликов ,Y Schütz ,A Nyanin ,S Greene ,Naoki Hayashi ,Jun Kikuchi ,H Sato ,Susumu Sato ,C A Aidala ,М А Volkov ,M Marx ,А Виноградов ,Yu Seon Jeong ,B Jacak ,S Y Fung ,Kazuhiro Tanaka ,Christian Klein-Boesing ,H Ohnìshì ,B Cole ,J Gösset ,A Öskarsson ,J C Peng ,J S Chai ,F Plášil ,T A Shibata ,G Martı́nez ,A Hansen ,V Onuchìn ,V P Ladygin ,S White ,V Manko ,S Sörensen ,A P.t Palounek ,S Fokin ,C Y ,G B Kim ,Tarun Kanti Ghosh ,Hisao Kobayashi ,C Maguire

doi:10.1103/physrevlett.97.052301

Abstract

Azimuthal correlations of jet-induced high-p(T) charged hadron pairs are studied at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The distribution of jet-associated partner hadrons (1.0<p(T)<2.5 GeV/c) per trigger hadron (2.5<p(T)<4.0 GeV/c) is found to vary with collision centrality, in both shape and yield, indicating a significant effect of the nuclear collision medium on the jet fragmentation process.

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