Photon-hadron jet correlations in p+p and Au+Au collisions at =200 GeV

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A. Adare,¹¹ S. Afanasiev,²⁵ C. Aidala,^12,37 N. N. Ajitanand,⁵⁴ Y. Akiba,^48,49 H. Al-Bataineh,⁴³ J. Alexander,⁵⁴ A. Al-Jamel,⁴³ K. Aoki,^31,48 L. Aphecetche,⁵⁶ R. Armendariz,⁴³ S. H. Aronson,⁶ J. Asai,^48,49 E. T. Atomssa,³² R. Averbeck,⁵⁵ T. C. Awes,⁴⁴ B. Azmoun,⁶ V. Babintsev,²¹ M. Bai,⁵ G. Baksay,¹⁷ L. Baksay,¹⁷ A. Baldisseri,¹⁴ K. N. Barish,⁷ P. D. Barnes,³⁴ B. Bassalleck,⁴² A. T. Basye,¹ S. Bathe,⁷ S. Batsouli,^12,44 V. Baublis,⁴⁷ F. Bauer,⁷ C. Baumann,³⁸ A. Bazilevsky,⁶ S. Belikov,^6,24 R. Bennett,⁵⁵ A. Berdnikov,⁵¹ Y. Berdnikov,⁵¹ A. A. Bickley,¹¹ M. T. Bjorndal,¹² J. G. Boissevain,³⁴ H. Borel,¹⁴ K. Boyle,⁵⁵ M. L. Brooks,³⁴ D. S. Brown,⁴³ D. Bucher,³⁸ H. Buesching,⁶ V. Bumazhnov,²¹ G. Bunce,^6,49 J. M. Burward-Hoy,³⁴ S. Butsyk,^34,55 C. M. Camacho,³⁴ S. Campbell,⁵⁵ J.-S. Chai,²⁶ B. S. Chang,⁶³ W. C. Chang,² J.-L. Charvet,¹⁴ C.-H. Chen,⁵⁵ S. Chernichenko,²¹ J. Chiba,²⁷ C. Y. Chi,¹² M. Chiu,^12,22 I. J. Choi,⁶³ R. K. Choudhury,⁴ T. Chujo,^59,60 P. Chung,⁵⁴ A. Churyn,²¹ V. Cianciolo,⁴⁴ Z. Citron,⁵⁵ C. R. Cleven,¹⁹ Y. Cobigo,¹⁴ B. A. Cole,¹² M. P. Comets,⁴⁵ M. Connors,⁵⁵ P. Constantin,^24,34 M. Csanád,¹⁶ T. Csörgő,²⁸ T. Dahms,⁵⁵ S. Dairaku,^31,48 K. Das,¹⁸ G. David,⁶ M. B. Deaton,¹ K. Dehmelt,¹⁷ H. Delagrange,⁵⁶ A. Denisov,²¹ D. d'Enterria,^12,32 A. Deshpande,^49,55 E. J. Desmond,⁶ O. Dietzsch,⁵² A. Dion,⁵⁵ M. Donadelli,⁵² J. L. Drachenberg,¹ O. Drapier,³² A. Drees,⁵⁵ K. A. Drees,⁵ A. K. Dubey,⁶² A. Durum,²¹ D. Dutta,⁴ V. Dzhordzhadze,^7,57 Y. V. Efremenko,⁴⁴ J. Egdemir,⁵⁵ F. Ellinghaus,¹¹ W. S. Emam,⁷ T. Engelmore,¹² A. Enokizono,^20,33 H. En'yo,^48,49 B. Espagnon,⁴⁵ S. Esumi,⁵⁹ K. O. Eyser,⁷ B. Fadem,³⁹ D. E. Fields,^42,49 M. Finger, Jr.,^8,25 M. Finger,^8,25 F. Fleuret,³² S. L. Fokin,³⁰ B. Forestier,³⁵ Z. Fraenkel,⁶² J. E. Frantz,^12,55 A. Franz,⁶ A. D. Frawley,¹⁸ K. Fujiwara,⁴⁸ Y. Fukao,^31,48 S.-Y. Fung,⁷ T. Fusayasu,⁴¹ S. Gadrat,³⁵ I. Garishvili,⁵⁷ F. Gastineau,⁵⁶ M. Germain,⁵⁶ A. Glenn,^11,57 H. Gong,⁵⁵ M. Gonin,³² J. Gosset,¹⁴ Y. Goto,^48,49 R. Granier de Cassagnac,³² N. Grau,^12,24 S. V. Greene,⁶⁰ M. Grosse Perdekamp,^22,49 T. Gunji,¹⁰ H.-Å. Gustafsson,³⁶ T. Hachiya,^20,48 A. Hadj Henni,⁵⁶ C. Haegemann,⁴² J. S. Haggerty,⁶ M. N. Hagiwara,¹ H. Hamagaki,¹⁰ R. Han,⁴⁶ H. Harada,²⁰ E. P. Hartouni,³³ K. Haruna,²⁰ M. Harvey,⁶ E. Haslum,³⁶ K. Hasuko,⁴⁸ R. Hayano,¹⁰ M. Heffner,³³ T. K. Hemmick,⁵⁵ T. Hester,⁷ J. M. Heuser,⁴⁸ X. He,¹⁹ H. Hiejima,²² J. C. Hill,²⁴ R. Hobbs,⁴² M. Hohlmann,¹⁷ M. Holmes,⁶⁰ W. Holzmann,⁵⁴ K. Homma,²⁰ B. Hong,²⁹ T. Horaguchi,^10,48,58 D. Hornback,⁵⁷ S. Huang,⁶⁰ M. G. Hur,²⁶ T. Ichihara,^48,49 R. Ichimiya,⁴⁸ Y. Ikeda,⁵⁹ K. Imai,^31,48 J. Imrek,¹⁵ M. Inaba,⁵⁹ Y. Inoue,^48,50 D. Isenhower,¹ L. Isenhower,¹ M. Ishihara,⁴⁸ T. Isobe,¹⁰ M. Issah,⁵⁴ A. Isupov,²⁵ D. Ivanischev,⁴⁷ B. V. Jacak,⁵⁵ J. Jia,¹² J. Jin,¹² O. Jinnouchi,⁴⁹ B. M. Johnson,⁶ K. S. Joo,⁴⁰ D. Jouan,⁴⁵ F. Kajihara,^10,48 S. Kametani,^10,48,61 N. Kamihara,^48,49,58 J. Kamin,⁵⁵ M. Kaneta,⁴⁹ J. H. Kang,⁶³ H. Kanou,^48,58 J. Kapustinsky,³⁴ T. Kawagishi,⁵⁹ D. Kawall,^37,49 A. V. Kazantsev,³⁰ S. Kelly,¹¹ T. Kempel,²⁴ A. Khanzadeev,⁴⁷ K. M. Kijima,²⁰ J. Kikuchi,⁶¹ B. I. Kim,²⁹ D. H. Kim,⁴⁰ D. J. Kim,⁶³ E. Kim,⁵³ S. H. Kim,⁶³ Y.-S. Kim,²⁶ E. Kinney,¹¹ K. Kiriluk,¹¹ A. Kiss,¹⁶ E. Kistenev,⁶ A. Kiyomichi,⁴⁸ J. Klay,³³ C. Klein-Boesing,³⁸ L. Kochenda,⁴⁷ V. Kochetkov,²¹ B. Komkov,⁴⁷ M. Konno,⁵⁹ J. Koster,²² D. Kotchetkov,⁷ A. Kozlov,⁶² A. Král,¹³ A. Kravitz,¹² P. J. Kroon,⁶ J. Kubart,^8,23 G. J. Kunde,³⁴ N. Kurihara,¹⁰ K. Kurita,^48,50 M. Kurosawa,⁴⁸ M. J. Kweon,²⁹ Y. Kwon,^57,63 G. S. Kyle,⁴³ R. Lacey,⁵⁴ Y.-S. Lai,¹² Y. S. Lai,¹² J. G. Lajoie,²⁴ D. Layton,²² A. Lebedev,²⁴ Y. Le Bornec,⁴⁵ S. Leckey,⁵⁵ D. M. Lee,³⁴ K. B. Lee,²⁹ M. K. Lee,⁶³ T. Lee,⁵³ M. J. Leitch,³⁴ M. A. L. Leite,⁵² B. Lenzi,⁵² P. Liebing,⁴⁹ H. Lim,⁵³ T. Liška,¹³ A. Litvinenko,²⁵ H. Liu,⁴³ M. X. Liu,³⁴ X. Li,⁹ X. H. Li,⁷ B. Love,⁶⁰ D. Lynch,⁶ C. F. Maguire,⁶⁰ Y. I. Makdisi,^5,6 A. Malakhov,²⁵ M. D. Malik,⁴² V. I. Manko,³⁰ E. Mannel,¹² Y. Mao,^46,48 L. Mašek,^8,23 H. Masui,⁵⁹ F. Matathias,^12,55 M. C. McCain,²² M. McCumber,⁵⁵ P. L. McGaughey,³⁴ N. Means,⁵⁵ B. Meredith,²² Y. Miake,⁵⁹ P. Mikeš,^8,23 K. Miki,⁵⁹ T. E. Miller,⁶⁰ A. Milov,^6,55 S. Mioduszewski,⁶ G. C. Mishra,¹⁹ M. Mishra,³ J. T. Mitchell,⁶ M. Mitrovski,⁵⁴ A. K. Mohanty,⁴ Y. Morino,¹⁰ A. Morreale,⁷ D. P. Morrison,⁶ J. M. Moss,³⁴ T. V. Moukhanova,³⁰ D. Mukhopadhyay,⁶⁰ J. Murata,^48,50 S. Nagamiya,²⁷ Y. Nagata,⁵⁹ J. L. Nagle,¹¹ M. Naglis,⁶² M. I. Nagy,¹⁶ I. Nakagawa,^48,49 Y. Nakamiya,²⁰ T. Nakamura,²⁰ K. Nakano,^48,58 J. Newby,³³ M. Nguyen,⁵⁵ T. Niita,⁵⁹ B. E. Norman,³⁴ R. Nouicer,⁶ A. S. Nyanin,³⁰ J. Nystrand,³⁶ E. O'Brien,⁶ S. X. Oda,¹⁰ C. A. Ogilvie,²⁴ H. Ohnishi,⁴⁸ I. D. Ojha,⁶⁰ H. Okada,^31,48 K. Okada,⁴⁹ M. Oka,⁴⁹ O. O. Omiwade,¹ Y. Onuki,⁴⁸ A. Oskarsson,³⁶ I. Otterlund,³⁶ M. Ouchida,²⁰ K. Ozawa,¹⁰ R. Pak,⁶ D. Pal,⁶⁰ A. P. T. Palounek,³⁴ V. Pantuev,⁵⁵ V. Papavassiliou,⁴³ J. Park,⁵³ W. J. Park,²⁹ S. F. Pate,⁴³ H. Pei,²⁴ J.-C. Peng,²² H. Pereira,¹⁴ V. Peresedov,²⁵ D. Yu. Peressounko,³⁰ C. Pinkenburg,⁶ R. P. Pisani,⁶ M. L. Purschke,⁶ A. K. Purwar,^34,55 H. Qu,¹⁹ J. Rak,^24,42 A. Rakotozafindrabe,³² I. Ravinovich,⁶² K. F. Read,^44,57 S. Rembeczki,¹⁷ M. Reuter,⁵⁵ K. Reygers,³⁸ V. Riabov,⁴⁷ Y. Riabov,⁴⁷ D. Roach,⁶⁰ G. Roche,³⁵ S. D. Rolnick,⁷ A. Romana,³² M. Rosati,²⁴ S. S. E. Rosendahl,³⁶ P. Rosnet,³⁵ P. Rukoyatkin,²⁵ P. Ružička,²³ V. L. Rykov,⁴⁸ S. S. Ryu,⁶³ B. Sahlmueller,³⁸ N. Saito,^31,48,49 T. Sakaguchi,^6,10,61 S. Sakai,⁵⁹ K. Sakashita,^48,58 H. Sakata,²⁰ V. Samsonov,⁴⁷ H. D. Sato,^31,48 S. Sato,^6,27,59 T. Sato,⁵⁹ S. Sawada,²⁷ K. Sedgwick,⁷ J. Seele,¹¹ R. Seidl,²² A. Yu. Semenov,²⁴ V. Semenov,²¹ R. Seto,⁷ D. Sharma,⁶² T. K. Shea,⁶ I. Shein,²¹ A. Shevel,^47,54 T.-A. Shibata,^48,58 K. Shigaki,²⁰ M. Shimomura,⁵⁹ T. Shohjoh,⁵⁹ K. Shoji,^31,48 P. Shukla,⁴ A. Sickles,^6,55 C. L. Silva,⁵² D. Silvermyr,⁴⁴ C. Silvestre,¹⁴ K. S. Sim,²⁹ B. K. Singh,³ C. P. Singh,³ V. Singh,³ S. Skutnik,²⁴ M. Slunečka,^8,25 W. C. Smith,¹ A. Soldatov,²¹ R. A. Soltz,³³ W. E. Sondheim,³⁴ S. P. Sorensen,⁵⁷ I. V. Sourikova,⁶ F. Staley,¹⁴ P. W. Stankus,⁴⁴ E. Stenlund,³⁶ M. Stepanov,⁴³ A. Ster,²⁸ S. P. Stoll,⁶ T. Sugitate,²⁰ C. Suire,⁴⁵ A. Sukhanov,⁶ J. P. Sullivan,³⁴ J. Sziklai,²⁸ T. Tabaru,⁴⁹ S. Takagi,⁵⁹ E. M. Takagui,⁵² A. Taketani,^48,49 R. Tanabe,⁵⁹ K. H. Tanaka,²⁷ Y. Tanaka,⁴¹ K. Tanida,^48,49 M. J. Tannenbaum,⁶ A. Taranenko,⁵⁴ P. Tarján,¹⁵ H. Themann,⁵⁵ T. L. Thomas,⁴² M. Togawa,^31,48 A. Toia,⁵⁵ J. Tojo,⁴⁸ L. Tomášek,²³ Y. Tomita,⁵⁹ H. Torii,^20,48 R. S. Towell,¹ V.-N. Tram,³² I. Tserruya,⁶² Y. Tsuchimoto,^20,48 S. K. Tuli,³ H. Tydesjö,³⁶ N. Tyurin,²¹ C. Vale,²⁴ H. Valle,⁶⁰ H. W. van Hecke,³⁴ A. Veicht,²² J. Velkovska,⁶⁰ R. Vertesi,¹⁵ A. A. Vinogradov,³⁰ M. Virius,¹³ V. Vrba,²³ E. Vznuzdaev,⁴⁷ M. Wagner,^31,48 D. Walker,⁵⁵ X. R. Wang,⁴³ Y. Watanabe,^48,49 F. Wei,²⁴ J. Wessels,³⁸ S. N. White,⁶ N. Willis,⁴⁵ D. Winter,¹² C. L. Woody,⁶ M. Wysocki,¹¹ W. Xie,^7,49 Y. L. Yamaguchi,⁶¹ K. Yamaura,²⁰ R. Yang,²² A. Yanovich,²¹ Z. Yasin,⁷ J. Ying,¹⁹ S. Yokkaichi,^48,49 G. R. Young,⁴⁴ I. Younus,⁴² I. E. Yushmanov,³⁰ W. A. Zajc,¹² O. Zaudtke,³⁸ C. Zhang,^12,44 S. Zhou,⁹ J. Zimányi,²⁸ and L. Zolin²⁵

(PHENIX Collaboration)

¹Abilene Christian University, Abilene, Texas 79699, USA
²Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
³Department of Physics, Banaras Hindu University, Varanasi 221005, India
⁴Bhabha Atomic Research Centre, Bombay 400 085, India
⁵Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
⁶Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
⁷University of California-Riverside, Riverside, California 92521, USA
⁸Charles University, Ovocný trh 5, Praha 1, 116 36, Prague, Czech Republic
⁹China Institute of Atomic Energy (CIAE), Beijing, People's Republic of China
¹⁰Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
¹¹University of Colorado, Boulder, Colorado 80309, USA
¹²Columbia University, New York, NY 10027 and Nevis Laboratories, Irvington, New York 10533, USA
¹³Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic
¹⁴Dapnia, CEA Saclay, F-91191, Gif-sur-Yvette, France
¹⁵Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
¹⁶ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
¹⁷Florida Institute of Technology, Melbourne, Florida 32901, USA
¹⁸Florida State University, Tallahassee, Florida 32306, USA
¹⁹Georgia State University, Atlanta, Georgia 30303, USA
²⁰Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
²¹IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, RU-142281, Russia
²²University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
²³Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
²⁴Iowa State University, Ames, Iowa 50011, USA
²⁵Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow Region, Russia
²⁶KAERI, Cyclotron Application Laboratory, Seoul, Korea
²⁷KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
²⁸KFKI Research Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences (MTA KFKI RMKI), H-1525 Budapest 114, P. O. Box 49, Budapest, Hungary
²⁹Korea University, Seoul, 136-701, Korea
³⁰Russian Research Center “Kurchatov Institute,” Moscow, Russia
³¹Kyoto University, Kyoto 606-8502, Japan
³²Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, France
³³Lawrence Livermore National Laboratory, Livermore, California 94550, USA
³⁴Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
³⁵LPC, Université Blaise Pascal, CNRS-IN2P3, Clermont-Fd, 63177 Aubiere Cedex, France
³⁶Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden
³⁷Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA
³⁸Institut für Kernphysik, University of Muenster, D-48149 Muenster, Germany
³⁹Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA
⁴⁰Myongji University, Yongin, Kyonggido 449-728, Korea
⁴¹Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, Japan
⁴²University of New Mexico, Albuquerque, New Mexico 87131, USA
⁴³New Mexico State University, Las Cruces, New Mexico 88003, USA
⁴⁴Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
⁴⁵IPN-Orsay, Universite Paris Sud, CNRS-IN2P3, BP1, F-91406, Orsay, France
⁴⁶Peking University, Beijing, People's Republic of China
⁴⁷PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region, RU-188300, Russia
⁴⁸RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, JAPAN
⁴⁹RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
⁵⁰Physics Department, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
⁵¹Saint Petersburg State Polytechnic University, St. Petersburg, Russia
⁵²Universidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo CEP05315-970, Brazil
⁵³System Electronics Laboratory, Seoul National University, Seoul, Korea
⁵⁴Chemistry Department, Stony Brook University, Stony Brook, SUNY, New York 11794-3400, USA
⁵⁵Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USA
⁵⁶SUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Université de Nantes) BP 20722-44307, Nantes, France
⁵⁷University of Tennessee, Knoxville, Tennessee 37996, USA
⁵⁸Department of Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152-8551, Japan
⁵⁹Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
⁶⁰Vanderbilt University, Nashville, Tennessee 37235, USA
⁶¹Waseda University, Advanced Research Institute for Science and Engineering, 17 Kikui-cho, Shinjuku-ku, Tokyo 162-0044, Japan
⁶²Weizmann Institute, Rehovot 76100, Israel
⁶³Yonsei University, IPAP, Seoul 120-749, Korea

Received 20 March 2009; published 31 August 2009

Wereport the observation at the Relativistic Heavy Ion Collider ofsuppression of back-to-back correlations in the direct photon+jet channel inAu+Au relative to p+p collisions. Two-particle correlations of direct photontriggers with associated hadrons are obtained by statistical subtraction ofthe decay photon-hadron ( gamma -h) background. The initial momentum of theaway-side parton is tightly constrained, because the parton-photon pair exactlybalance in momentum at leading order in perturbative quantum chromodynamics,making such correlations a powerful probe of the in-medium partonenergy loss. The away-side nuclear suppression factor, I_AA, in centralAu+Au collisions, is 0.32±0.12^stat±0.09^syst for hadrons of 3Th <5 in coincidencewith photons of 5Tgamma <15 GeV/c. The suppression is comparable tothat observed for high-p_T single hadrons and dihadrons. The directphoton associated yields in p+p collisions scale approximately with themomentum balance, z_T [equivalent] p Th /p, as expected for a measurement of theaway-side parton fragmentation function. We compare to Au+Au collisions forwhich the momentum balance dependence of the nuclear modification shouldbe sensitive to the path-length dependence of parton energy loss.

URL:	http://link.aps.org/doi/10.1103/PhysRevC.80.024908
DOI:	10.1103/PhysRevC.80.024908
PACS:	25.75.Dw; 13.85.Qk; 13.20.Fc; 13.20.He 25.75.Dw Particle and resonance production in relativistic heavy-ion collisions 13.85.Qk Hadron-induced inclusive production with identified leptons, photons, or other nonhadronic particles (energy>10 GeV) 13.20.Fc Leptonic/semileptonic/radiative decays of charmed mesons 13.20.He Leptonic/semileptonic/radiative decays of bottom mesons YEAR: 2009