Skip to Main content Skip to Navigation
Journal articles

Photon-Hadron Jet Correlations in p+p and Au+Au Collisions at sqrt(s_NN) = 200 GeV

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 M. Bai G. Baksay L. Baksay A. Baldisseri K.N. Barish P.D. Barnes B. Bassalleck A.T. Basye S. Bathe S. Batsouli V. Baublis F. Bauer Cédric Baumann A. Bazilevsky S. Belikov R. Bennett A. Berdnikov Y. Berdnikov A.A. Bickley M.T. Bjorndal J.G. Boissevain H. Borel K. Boyle M.L. Brooks D.S. Brown D. Bucher H. Buesching V. Bumazhnov G. Bunce J.M. Burward-Hoy S. Butsyk C. Muñoz Camacho S. Campbell J.-S. Chai B.S. Chang W.C. Chang J.-L. Charvet S. Chernichenko J. Chiba C.Y. Chi M. Chiu I.J. Choi R.K. Choudhury T. Chujo P. Chung A. Churyn V. Cianciolo Z. Citron C.R. Cleven Y. Cobigo B.A. Cole M.P. Comets 3 P. Constantin M. Csan'Ad T. Cs¨org˝o T. Dahms S. Dairaku K. Das G. David M.B. Deaton K. Dehmelt H. Delagrange 1 A. Denisov D. d'Enterria 2 A. Deshpande E.J. Desmond O. Dietzsch A. Dion M. Donadelli J.L. Drachenberg O. Drapier 2 A. Drees K.A. Drees A.K. Dubey A. Durum D. Dutta V. Dzhordzhadze Y.V. Efremenko J. Egdemir F. Ellinghaus W.S. Emam T. Engelmore A. Enokizono H. En'Yo B. Espagnon 3 S. Esumi K.O. Eyser B. Fadem D.E. Fields M. Finger F. Fleuret 2 S.L. Fokin B. Forestier Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley K. Fujiwara Y. Fukao S.-Y. Fung T. Fusayasu S. Gadrat I. Garishvili F. Gastineau 1 Marie Germain 1 A. Glenn H. Gong M. Gonin 2 J. Gosset 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 S. Huang M.G. Hur T. Ichihara R. Ichimiya Y. Ikeda K. Imai J. Imrek M. Inaba Y. Inoue D. Isenhower L. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov D. Ivanischev B.V. Jacak J. Jia J. Jin O. Jinnouchi B.M. Johnson K.S. Joo D. Jouan 3 F. Kajihara S. Kametani N. Kamihara J. Kamin M. Kaneta J.H. Kang H. Kanou J. Kapustinsky T. Kawagishi D. Kawall A.V. Kazantsev Steven Kelly T. Kempel A. Khanzadeev K.M. Kijima J. Kikuchi B.I. Kim D.H. Kim D.J. Kim E. Kim S.H. Kim Y.-S. Kim E. Kinney K. Kiriluk A. Kiss E. Kistenev A. Kiyomichi J. Klay C. Klein-Boesing L. Kochenda V. Kochetkov B. Komkov M. Konno J. Koster D. Kotchetkov A. Kozlov A. Kr'Al A. Kravitz P.J. Kroon J. Kubart G.J. Kunde N. Kurihara K. Kurita M. Kurosawa M.J. Kweon Y. Kwon G.S. Kyle R. Lacey Y.-S. Lai Y.S. Lai J.G. Lajoie D. Layton A. Lebedev Y. Le Bornec 3 S. Leckey D.M. Lee K.B. Lee M.K. Lee T. Lee M.J. Leitch M.A.L. Leite B. Lenzi P. Liebing H. Lim T. Liˇska A. Litvinenko Hong Liu M.X. Liu Xiaojian Li X.H. Li B. Love D. Lynch C.F. Maguire Y.I. Makdisi A. Malakhov M.D. Malik V.I. Manko E. Mannel Y. Mao L. Maˇsek H. Masui F. Matathias M.C. Mccain M. Mccumber P.L. Mcgaughey N. Means B. Meredith Y. Miake P. Mikeˇs K. Miki T.E. Miller A. Milov S. Mioduszewski G.C. Mishra M. Mishra J.T. Mitchell M. Mitrovski A.K. Mohanty Y. Morino A. Morreale D.P. Morrison J.M. Moss T.V. Moukhanova D. Mukhopadhyay J. Murata S. Nagamiya Y. Nagata J.L. Nagle M. Naglis M.I. Nagy I. Nakagawa Y. Nakamiya T. Nakamura K. Nakano J. Newby M. Nguyen T. Niita B.E. Norman R. Nouicer 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 Y. Onuki 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 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 D. Roach G. Roche 4 S.D. Rolnick A. Romana 2 M. Rosati S.S.E. Rosendahl P. Rosnet 4 P. Rukoyatkin P. Ruˇziˇcka V.L. Rykov S.S. Ryu B. Sahlmueller N. Saito T. Sakaguchi S. Sakai K. Sakashita H. Sakata V. Samsonov H.D. Sato S. Sato T. Sato S. Sawada K. Sedgwick J. Seele R. Seidl A.Yu. Semenov V. Semenov R. Seto D. Sharma T.K. Shea I. Shein A. Shevel T.-A. Shibata K. Shigaki M. Shimomura T. Shohjoh K. Shoji P. Shukla A. Sickles C.L. Silva D. Silvermyr C. Silvestre K.S. Sim B.K. Singh C.P. Singh V. Singh S. Skutnik M. Sluneˇcka W.C. Smith A. Soldatov R.A. Soltz W.E. Sondheim S.P. Sorensen I.V. Sourikova F. Staley P.W. Stankus E. Stenlund M. Stepanov A. Ster S.P. Stoll T. Sugitate C. Suire 3 A. Sukhanov J.P. Sullivan J. Sziklai T. Tabaru S. Takagi E.M. Takagui A. Taketani R. Tanabe K.H. Tanaka Y. Tanaka K. Tanida M.J. Tannenbaum A. Taranenko P. Tarj'An H. Themann T.L. Thomas M. Togawa A. Toia J. Tojo L. Tom'Aˇsek Y. Tomita H. Torii R.S. Towell V.-N. Tram 2 I. Tserruya Y. Tsuchimoto S.K. Tuli H. Tydesj¨o N. Tyurin C. Vale H. Valle H.W. van Hecke A. Veicht J. Velkovska R. Vertesi A.A. Vinogradov M. Virius V. Vrba E. Vznuzdaev M. Wagner D. Walker X.R. Wang Y. Watanabe F. Wei J. Wessels S.N. White N. Willis 3 D. Winter C.L. Woody M. Wysocki W. Xie Y.L. Yamaguchi K. Yamaura R. Yang 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. Zim'Anyi L. Zolin
1 SUBATECH - Laboratoire SUBATECH Nantes
2 LLR - Laboratoire Leprince-Ringuet
3 IPNO - Institut de Physique Nucléaire d'Orsay
4 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
Abstract : We report the observation at the Relativistic Heavy Ion Collider (RHIC) of suppression of back-to-back correlations in the direct photon+jet channel in Au+Au relative to p+p collisions. Two-particle correlations of direct photon triggers with associated hadrons are obtained by statistical subtraction of the decay photon-hadron background. The initial momentum of the away-side parton is tightly constrained, because the parton-photon pair exactly balance in momentum at leading order in perturbative quantum chromodynamics (pQCD), making such correlations a powerful probe of the in-medium parton energy loss. The away-side nuclear suppression factor, I_AA, in central Au+Au collisions, is 0.32 +/- 0.12(stat) +/- 0.09(syst) for hadrons of 3 < p_T < 5 in coincidence with photons of 5 < p_T < 15 GeV/c. The suppression is comparable to that observed for high-p_T single hadrons and dihadrons. The direct photon associated yields in p+p collisions scale approximately with the momentum balance, z_T = p_T^hadron/p_T^photon, as expected for a measure of the away-side parton fragmentation function. We compare to Au+Au collisions for which the momentum balance dependence of the nuclear modification should be sensitive to the path-length dependence of parton energy loss.
Document type :
Journal articles
Complete list of metadata
http://hal.in2p3.fr/in2p3-00377305
Contributor : Dominique Girod <>
Submitted on : Tuesday, April 21, 2009 - 2:40:19 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:12 PM

Links full text

arxiv

Identifiers

Collections

IN2P3 | LLR | LPC-CLERMONT | SUBATECH | CNRS | UNIV-NANTES | X-LLR | IPNO | X | PRES_CLERMONT | X-DEP-PHYS | IMT-ATLANTIQUE | SUBATECH-PLASMA

Citation

A. Adare, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. Photon-Hadron Jet Correlations in p+p and Au+Au Collisions at sqrt(s_NN) = 200 GeV. Physical Review C, American Physical Society, 2009, 80, pp.024908. ⟨10.1103/PhysRevC.80.024908⟩. ⟨in2p3-00377305⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

485