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Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV: Jet-quenching and the response of partonic matter

A. Adare S. Afanasiev C. Aidala N.N. Ajitanand Y. Akiba H. Al-Bataineh J. Alexander A. Al-Jamel K. Aoki Laurent Aphecetche 1 R. Armendariz S.H. Aronson J. Asai E. T. Atomssa 2 R. Averbeck T.C. Awes B. Azmoun V. Babintsev G. Baksay L. Baksay A. Baldisseri 3 K.N. Barish P.D. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis F. Bauer A. Bazilevsky S. Belikov R. Bennett Y. Berdnikov A.A. Bickley M.T. Bjorndal J.G. Boissevain H. Borel 3 K. Boyle M.L. Brooks D.S. Brown D. Bucher H. Buesching V. Bumazhnov G. Bunce J.M. Burward-Hoy S. Butsyk S. Campbell J.-S. Chai B.S. Chang J.-L. Charvet 3 S. Chernichenko J. Chiba C.Y. Chi M. Chiu I.J. Choi T. Chujo P. Chung A. Churyn V. Cianciolo C.R. Cleven Y. Cobigo 3 B.A. Cole M.P. Comets 4 P. Constantin M. Csanad T. Csorgo T. Dahms K. Das G. David M.B. Deaton K. Dehmelt H. Delagrange 1 A. Denisov D. d'Enterria A. Deshpande E.J. Desmond O. Dietzsch A. Dion M. Donadelli J.L. Drachenberg O. Drapier 2 A. Drees A.K. Dubey A. Durum V. Dzhordzhadze Y.V. Efremenko J. Egdemir F. Ellinghaus W.S. Emam A. Enokizono H. En'Yo B. Espagnon 4 S. Esumi K.O. Eyser D.E. Fields M. Finger F. Fleuret 2 S.L. Fokin B. Forestier 5 Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley K. Fujiwara Y. Fukao S.-Y. Fung T. Fusayasu S. Gadrat 5 I. Garishvili F. Gastineau 1 Marie Germain 1 A. Glenn H. Gong M. Gonin 2 J. Gosset 3 Y. Goto R. Granier de Cassagnac 2 N. Grau S.V. Greene M. Grosse Perdekamp T. Gunji H.-A. Gustafsson T. Hachiya A. Hadj Henni 1 C. Haegemann J.S. Haggerty M.N. Hagiwara H. Hamagaki R. Han H. Harada E.P. Hartouni K. Haruna M. Harvey E. Haslum K. Hasuko R. Hayano M. Heffner T.K. Hemmick T. Hester J.M. Heuser X. He H. Hiejima J.C. Hill R. Hobbs M. Hohlmann M. Holmes W. Holzmann K. Homma B. Hong T. Horaguchi D. Hornback M.G. Hur T. Ichihara K. Imai M. Inaba Y. Inoue D. Isenhower L. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov B.V. Jacak J. Jia J. Jin O. Jinnouchi B.M. Johnson K.S. Joo D. Jouan 4 F. Kajihara S. Kametani N. Kamihara J. Kamin M. Kaneta J.H. Kang H. Kanou T. Kawagishi D. Kawall A.V. Kazantsev Steven Kelly A. Khanzadeev J. Kikuchi D.H. Kim D.J. Kim E. Kim Y.-S. Kim E. Kinney A. Kiss E. Kistenev A. Kiyomichi J. Klay C. Klein-Boesing L. Kochenda V. Kochetkov B. Komkov M. Konno D. Kotchetkov A. Kozlov A. Kral A. Kravitz P.J. Kroon J. Kubart G.J. Kunde N. Kurihara K. Kurita M.J. Kweon Y. Kwon G.S. Kyle R. Lacey Y.-S. Lai J.G. Lajoie A. Lebedev Y. Le Bornec 4 S. Leckey D.M. Lee M.K. Lee T. Lee M.J. Leitch M.A.L. Leite B. Lenzi H. Lim T. Liska A. Litvinenko M.X. Liu X. Li X.H. Li B. Love D. Lynch C.F. Maguire Y.I. Makdisi A. Malakhov M.D. Malik V.I. Manko Y. Mao L. Masek H. Masui F. Matathias M.C. Mccain M. Mccumber P.L. Mcgaughey Y. Miake P. Mikes K. Miki T.E. Miller A. Milov S. Mioduszewski G.C. Mishra M. Mishra J.T. Mitchell M. Mitrovski A. Morreale D.P. Morrison J.M. Moss T.V. Moukhanova D. Mukhopadhyay J. Murata S. Nagamiya Y. Nagata J.L. Nagle M. Naglis I. Nakagawa Y. Nakamiya T. Nakamura K. Nakano J. Newby M. Nguyen B.E. Norman A.S. Nyanin J. Nystrand E. O'Brien S.X. Oda C.A. Ogilvie H. Ohnishi I.D. Ojha H. Okada K. Okada M. Oka O.O. Omiwade A. Oskarsson I. Otterlund M. Ouchida K. Ozawa R. Pak D. Pal A.P.T. Palounek V. Pantuev V. Papavassiliou J. Park W.J. Park S.F. Pate H. Pei J.-C. Peng H. Pereira 3 V. Peresedov D.Yu. Peressounko C. Pinkenburg R.P. Pisani M.L. Purschke A.K. Purwar H. Qu J. Rak A. Rakotozafindrabe 2 I. Ravinovich K.F. Read S. Rembeczki M. Reuter K. Reygers V. Riabov Y. Riabov G. Roche 5 A. Romana 2 M. Rosati S.S.E. Rosendahl P. Rosnet 5 P. Rukoyatkin V.L. Rykov S.S. Ryu B. Sahlmueller N. Saito T. Sakaguchi S. Sakai H. Sakata V. Samsonov H.D. Sato S. Sato S. Sawada J. Seele R. Seidl V. Semenov R. Seto D. Sharma T.K. Shea I. Shein A. Shevel T.-A. Shibata K. Shigaki M. Shimomura T. Shohjoh K. Shoji A. Sickles C.L. Silva D. Silvermyr C. Silvestre 3 K.S. Sim C.P. Singh V. Singh S. Skutnik M. Slunecka W.C. Smith A. Soldatov R.A. Soltz W.E. Sondheim S.P. Sorensen I.V. Sourikova F. Staley 3 P.W. Stankus E. Stenlund M. Stepanov A. Ster S.P. Stoll T. Sugitate C. Suire 4 J.P. Sullivan J. Sziklai T. Tabaru S. Takagi E.M. Takagui A. Taketani K.H. Tanaka Y. Tanaka K. Tanida M.J. Tannenbaum A. Taranenko P. Tarjan T.L. Thomas M. Togawa A. Toia J. Tojo L. Tomasek H. Torii R.S. Towell V.-N. Tram 2 I. Tserruya Y. Tsuchimoto S.K. Tuli H. Tydesjo N. Tyurin C. Vale H. Valle H.W. van Hecke J. Velkovska R. Vertesi A.A. Vinogradov M. Virius V. Vrba E. Vznuzdaev M. Wagner D. Walker X.R. Wang Y. Watanabe J. Wessels S.N. White N. Willis 4 D. Winter C.L. Woody M. Wysocki W. Xie Y. Yamaguchi A. Yanovich Z. Yasin J. Ying S. Yokkaichi G.R. Young I. Younus I.E. Yushmanov W.A. Zajc O. Zaudtke C. Zhang S. Zhou J. Zimanyi L. Zolin
Abstract : Azimuthal angle \Delta\phi correlations are presented for charged hadrons from dijets for 0.4 < p_T < 10 GeV/c in Au+Au collisions at sqrt(s_NN) = 200 GeV. With increasing p_T, the away-side distribution evolves from a broad to a concave shape, then to a convex shape. Comparisons to p+p data suggest that the away-side can be divided into a partially suppressed "head" region centered at Delta\phi ~ \pi, and an enhanced "shoulder" region centered at Delta\phi ~ \pi +/- 1.1. The p_T spectrum for the "head" region softens toward central collisions, consistent with the onset of jet quenching. The spectral slope for the "shoulder" region is independent of centrality and trigger p_T, which offers constraints on energy transport mechanisms and suggests that the "shoulder" region contains the medium response to energetic jets.
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A. Adare, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV: Jet-quenching and the response of partonic matter. Physical Review C, American Physical Society, 2008, 77, pp.011901. ⟨10.1103/PhysRevC.77.011901⟩. ⟨in2p3-00151447⟩

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