Photon-hadron jet correlations in p plus p and Au plus Au collisions at s(NN)=200 GeV

Autoria(s): ADARE, A.; AFANASIEV, S.; AIDALA, C.; AJITANAND, N. N.; AKIBA, Y.; AL-BATAINEH, H.; ALEXANDER, J.; AL-JAMEL, A.; AOKI, K.; APHECETCHE, L.; ARMENDARIZ, R.; ARONSON, S. H.; ASAI, J.; ATOMSSA, E. T.; AVERBECK, R.; AWES, T. C.; AZMOUN, B.; BABINTSEV, V.; BAI, M.; BAKSAY, G.; BAKSAY, L.; BALDISSERI, A.; BARISH, K. N.; BARNES, P. D.; BASSALLECK, B.; BASYE, A. T.; BATHE, S.; BATSOULI, S.; BAUBLIS, V.; BAUER, F.; BAUMANN, C.; BAZILEVSKY, A.; BELIKOV, S.; BENNETT, R.; BERDNIKOV, A.; BERDNIKOV, Y.; BICKLEY, A. A.; BJORNDAL, M. T.; BOISSEVAIN, J. G.; BOREL, H.; BOYLE, K.; BROOKS, M. L.; BROWN, D. S.; BUCHER, D.; BUESCHING, H.; BUMAZHNOV, V.; BUNCE, G.; BURWARD-HOY, J. M.; BUTSYK, S.; CAMACHO, C. M.; CAMPBELL, S.; CHAI, J. -S.; CHANG, B. S.; CHANG, W. C.; CHARVET, J. -L.; CHEN, C. -H.; CHERNICHENKO, S.; CHIBA, J.; CHI, C. Y.; CHIU, M.; CHOI, I. J.; CHOUDHURY, R. K.; CHUJO, T.; CHUNG, P.; CHURYN, A.; CIANCIOLO, V.; CITRON, Z.; CLEVEN, C. R.; COBIGO, Y.; COLE, B. A.; COMETS, M. P.; CONNORS, M.; CONSTANTIN, P.; CSANAD, M.; CSORGO, T.; DAHMS, T.; DAIRAKU, S.; DAS, K.; DAVID, G.; DEATON, M. B.; DEHMELT, K.; DELAGRANGE, H.; DENISOV, A.; D'ENTERRIA, D.; DESHPANDE, A.; DESMOND, E. J.; Dietzsch, Olacio; DION, A.; Donadelli, Marisílvia; DRACHENBERG, J. L.; DRAPIER, O.; DREES, A.; DREES, K. A.; DUBEY, A. K.; DURUM, A.; DUTTA, D.; DZHORDZHADZE, V.; EFREMENKO, Y. V.; EGDEMIR, J.; ELLINGHAUS, F.; EMAM, W. S.; ENGELMORE, T.; ENOKIZONO, A.; EN'YO, H.; ESPAGNON, B.; ESUMI, S.; EYSER, K. O.; FADEM, B.; FIELDS, D. E.; FINGER JR., M.; FINGER, M.; FLEURET, F.; FOKIN, S. L.; FORESTIER, B.; FRAENKEL, Z.; FRANTZ, J. E.; FRANZ, A.; FRAWLEY, A. D.; FUJIWARA, K.; FUKAO, Y.; FUNG, S. -Y.; FUSAYASU, T.; GADRAT, S.; GARISHVILI, I.; GASTINEAU, F.; GERMAIN, M.; GLENN, A.; GONG, H.; GONIN, M.; GOSSET, J.; GOTO, Y.; CASSAGNAC, R. Granier de; GRAU, N.; GREENE, S. V.; PERDEKAMP, M. Grosse; GUNJI, T.; GUSTAFSSON, H. -A; HACHIYA, T.; HENNI, A. Hadj; HAEGEMANN, C.; HAGGERTY, J. S.; HAGIWARA, M. N.; HAMAGAKI, H.; HAN, R.; HARADA, H.; HARTOUNI, E. P.; HARUNA, K.; HARVEY, M.; HASLUM, E.; HASUKO, K.; HAYANO, R.; HEFFNER, M.; HEMMICK, T. K.; HESTER, T.; HEUSER, J. M.; HE, X.; HIEJIMA, H.; HILL, J. C.; HOBBS, R.; HOHLMANN, M.; HOLMES, M.; HOLZMANN, W.; HOMMA, K.; HONG, B.; HORAGUCHI, T.; HORNBACK, D.; HUANG, S.; HUR, M. G.; ICHIHARA, T.; ICHIMIYA, R.; IKEDA, Y.; IMAI, K.; IMREK, J.; INABA, M.; INOUE, Y.; ISENHOWER, D.; ISENHOWER, L.; ISHIHARA, M.; ISOBE, T.; ISSAH, M.; ISUPOV, A.; IVANISCHEV, D.; JACAK, B. V.; JIA, J.; JIN, J.; JINNOUCHI, O.; JOHNSON, B. M.; JOO, K. S.; JOUAN, D.; KAJIHARA, F.; KAMETANI, S.; KAMIHARA, N.; KAMIN, J.; KANETA, M.; KANG, J. H.; KANOU, H.; KAPUSTINSKY, J.; KAWAGISHI, T.; KAWALL, D.; KAZANTSEV, A. V.; KELLY, S.; KEMPEL, T.; KHANZADEEV, A.; KIJIMA, K. M.; KIKUCHI, J.; KIM, B. I.; KIM, D. H.; KIM, D. J.; KIM, E.; KIM, S. H.; KIM, Y. -S.; KINNEY, E.; KIRILUK, K.; KISS, A.; KISTENEV, E.; KIYOMICHI, A.; KLAY, J.; KLEIN-BOESING, C.; KOCHENDA, L.; KOCHETKOV, V.; KOMKOV, B.; KONNO, M.; KOSTER, J.; KOTCHETKOV, D.; KOZLOV, A.; KRAL, A.; KRAVITZ, A.; KROON, P. J.; KUBART, J.; KUNDE, G. J.; KURIHARA, N.; KURITA, K.; KUROSAWA, M.; KWEON, M. J.; KWON, Y.; KYLE, G. S.; LACEY, R.; LAI, Y. -S.; LAI, Y. S.; LAJOIE, J. G.; LAYTON, D.; LEBEDEV, A.; BORNEC, Y. Le; LECKEY, S.; LEE, D. M.; LEE, K. B.; LEE, M. K.; LEE, T.; LEITCH, M. J.; Leite, Marco Aurelio Lisboa; Lenzi, Bruno Rodrigues; LIEBING, P.; LIM, H.; LISKA, T.; LITVINENKO, A.; LIU, H.; LIU, M. X.; LI, X.; LI, X. H.; LOVE, B.; LYNCH, D.; MAGUIRE, C. F.; MAKDISI, Y. I.; MALAKHOV, A.; MALIK, M. D.; MANKO, V. I.; MANNEL, E.; MAO, Y.; MASEK, L.; MASUI, H.; MATATHIAS, F.; MCCAIN, M. C.; MCCUMBER, M.; MCGAUGHEY, P. L.; MEANS, N.; MEREDITH, B.; MIAKE, Y.; MIKES, P.; MIKI, K.; MILLER, T. E.; MILOV, A.; MIODUSZEWSKI, S.; MISHRA, G. C.; MISHRA, M.; MITCHELL, J. T.; MITROVSKI, M.; MOHANTY, A. K.; MORINO, Y.; MORREALE, A.; MORRISON, D. P.; MOSS, J. M.; MOUKHANOVA, T. V.; MUKHOPADHYAY, D.; MURATA, J.; NAGAMIYA, S.; NAGATA, Y.; NAGLE, J. L.; NAGLIS, M.; NAGY, M. I.; NAKAGAWA, I.; NAKAMIYA, Y.; NAKAMURA, T.; NAKANO, K.; NEWBY, J.; NGUYEN, M.; NIITA, T.; NORMAN, B. E.; NOUICER, R.; NYANIN, A. S.; NYSTRAND, J.; O'BRIEN, E.; ODA, S. X.; OGILVIE, C. A.; OHNISHI, H.; OJHA, I. D.; OKADA, H.; OKADA, K.; OKA, M.; OMIWADE, O. O.; ONUKI, Y.; OSKARSSON, A.; OTTERLUND, I.; OUCHIDA, M.; OZAWA, K.; PAK, R.; PAL, D.; PALOUNEK, A. P. T.; PANTUEV, V.; PAPAVASSILIOU, V.; PARK, J.; PARK, W. J.; PATE, S. F.; PEI, H.; PENG, J. -C.; PEREIRA, H.; PERESEDOV, V.; PERESSOUNKO, D. Yu.; PINKENBURG, C.; PISANI, R. P.; PURSCHKE, M. L.; PURWAR, A. K.; QU, H.; RAK, J.; RAKOTOZAFINDRABE, A.; RAVINOVICH, I.; READ, K. F.; REMBECZKI, S.; REUTER, M.; REYGERS, K.; RIABOV, V.; RIABOV, Y.; ROACH, D.; ROCHE, G.; ROLNICK, S. D.; ROMANA, A.; ROSATI, M.; ROSENDAHL, S. S. E.; ROSNET, P.; RUKOYATKIN, P.; RUZICKA, P.; RYKOV, V. L.; RYU, S. S.; SAHLMUELLER, B.; SAITO, N.; SAKAGUCHI, T.; SAKAI, S.; SAKASHITA, K.; SAKATA, H.; SAMSONOV, V.; SATO, H. D.; SATO, S.; SATO, T.; SAWADA, S.; SEDGWICK, K.; SEELE, J.; SEIDL, R.; SEMENOV, A. Yu.; SEMENOV, V.; SETO, R.; SHARMA, D.; SHEA, T. K.; SHEIN, I.; SHEVEL, A.; SHIBATA, T. -A.; SHIGAKI, K.; SHIMOMURA, M.; SHOHJOH, T.; SHOJI, K.; SHUKLA, P.; SICKLES, A.; Silva, Cesar Luiz da; SILVERMYR, D.; SILVESTRE, C.; SIM, K. S.; SINGH, B. K.; SINGH, C. P.; SINGH, V.; SKUTNIK, S.; SLUNECKA, M.; SMITH, W. C.; SOLDATOV, A.; SOLTZ, R. A.; SONDHEIM, W. E.; SORENSEN, S. P.; SOURIKOVA, I. V.; STALEY, F.; STANKUS, P. W.; STENLUND, E.; STEPANOV, M.; STER, A.; STOLL, S. P.; SUGITATE, T.; SUIRE, C.; SUKHANOV, A.; SULLIVAN, J. P.; SZIKLAI, J.; TABARU, T.; TAKAGI, S.; Takagui, Emi Marcia; TAKETANI, A.; TANABE, R.; TANAKA, K. H.; TANAKA, Y.; TANIDA, K.; TANNENBAUM, M. J.; TARANENKO, A.; TARJAN, P.; THEMANN, H.; THOMAS, T. L.; TOGAWA, M.; TOIA, A.; TOJO, J.; TOMASEK, L.; TOMITA, Y.; TORII, H.; TOWELL, R. S.; TRAM, V. -N.; TSERRUYA, I.; TSUCHIMOTO, Y.; TULI, S. K.; TYDESJO, H.; TYURIN, N.; VALE, C.; VALLE, H.; HECKE, H. W. van; VEICHT, A.; VELKOVSKA, J.; VERTESI, R.; VINOGRADOV, A. A.; VIRIUS, M.; VRBA, V.; VZNUZDAEV, E.; WAGNER, M.; WALKER, D.; WANG, X. R.; WATANABE, Y.; WEI, F.; WESSELS, J.; WHITE, S. N.; WILLIS, N.; WINTER, D.; WOODY, C. L.; WYSOCKI, M.; XIE, W.; YAMAGUCHI, Y. L.; YAMAURA, K.; YANG, R.; YANOVICH, A.; YASIN, Z.; YING, J.; YOKKAICHI, S.; YOUNG, G. R.; YOUNUS, I.; YUSHMANOV, I. E.; ZAJC, W. A.; ZAUDTKE, O.; ZHANG, C.; ZHOU, S.; ZIMANYI, J.; ZOLIN, L.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO
Data(s)

18/04/2012

18/04/2012

2009
Resumo

We report the observation at the Relativistic Heavy Ion Collider 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 (gamma-h) 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, 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)(h)< 5 in coincidence with photons of 5 < p(T)(gamma)< 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)equivalent to p(T)(h)/p(T)(gamma), as expected for a measurement 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.

Office of Science of the Department of Energy (DOE)

National Science Foundation (NSF)

Renaissance Technologies LLC

Abilene Christian University Research Council

Research Foundation of SUNY

Dean of the College of Arts and Sciences, Vanderbilt University (USA)

Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan

JSPS - Japan Society for the Promotion of Science (Japan)

Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (Brazil)

NSFC Natural Science Foundation of China (People's Republic of China)

MSMT Ministry of Education, Youth and Sports (Czech Republic)

Centre National de la Recherche Scientifique - CNRS

CEA Commissariat a l'Energie Atomique

(CNRS/IN2P3) Institut National de Physique Nucleaire et de Physique des Particules (France)

Ministry of Industry, Science and Tekhnologies

BMBF - Bundesministerium fur Bildung und Forschung, Germany

(DAAD) Deutscher Akademischer Austausch Dienst, Germany

Alexander von Humboldt Stiftung (Germany)

OTKA Hungarian National Science Fund

OTKA (Hungary)

(DAE) Department of Atomic Energy, India

ISF - Israel Science Foundation (Israel)

Korea Research Foundation (KRF) and Korea Science and Engineering Foundation (KOSEF), Korea

Ministry of Education and Science

RAS Russia Academy of Sciences, FAAE Federal Agency of Atomic Energy (Russia)

Wallenberg Foundation (Sweden)

CRDF US Civilian Research and Development Foundation for the Independent States of the Former Soviet Union

US-Hungarian Fulbright Foundation for Educational Exchange,

(BSF) US-Israel Binational Science Foundation
Identificador

PHYSICAL REVIEW C, v.80, n.2, 2009

0556-2813

http://producao.usp.br/handle/BDPI/16093

10.1103/PhysRevC.80.024908

http://dx.doi.org/10.1103/PhysRevC.80.024908
Idioma(s)

eng
Publicador

AMER PHYSICAL SOC
Relação

Physical Review C
Direitos

restrictedAccess

Copyright AMER PHYSICAL SOC
Palavras-Chave #HEAVY-ION COLLISIONS #TRANSVERSE-MOMENTUM #ENERGY-LOSS #PHENIX #DETECTORS #PARTICLES #EVENTS #Physics, Nuclear
Tipo

article

original article

publishedVersion
Acesso ao item digital