Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions
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Title |
Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions
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Creator |
ABELEV, BI
AGGARWAL, MM AHAMMED, Z ANDERSON, BD ARKHIPKIN, D AVERICHEV, GS BAI, Y BALEWSKI, J BARANNIKOVA, O BARNSBY, LS BAUDOT, J BAUMGART, S BEAVIS, DR BELLWIED, R BENEDOSSO, F BETANCOURT, MJ BETTS, RR BHARADWAJ, S BHASIN, A BHATI, AK BICHSEL, H BIELCIK, J BIELCIKOVA, J BIRITZ, B BLAND, LC BOMBARA, M BONNER, BE BOTJE, M BOUCHET, J BRAIDOT, E BRANDIN, AV BRUNA, E BUELTMANN, S BURTON, TP BYSTERSKY, M CAI, XZ CAINES, H SANCHEZ, MCD CALLNER, J CATU, O CEBRA, D CENDEJAS, R CERVANTES, MC CHAJECKI, Z CHALOUPKA, P CHATTOPADHYAY, S CHEN, HF CHEN, JH CHEN, JY CHENG, J CHERNEY, M CHIKANIAN, A CHOI, KE CHRISTIE, W CHUNG, SU CLARKE, RF CODRINGTON, MJ COFFIN, JP CORLISS, R CORMIER, TM COSENTINO, MR CRAMER, JG CRAWFORD, HJ DAS, D DASH, S DAUGHERITY, M DE SILVA, C DEDOVICH, TG DEPHILLIPS, M DEREVSCHIKOV, AA DE SOUZA, RD DIDENKO, L DJAWOTHO, P DOGRA, SM DONG, X DRACHENBERG, JL DRAPER, JE DU, F DUNLOP, JC MAZUMDAR, MRD EDWARDS, WR EFIMOV, LG ELHALHULI, E ELNIMR, M EMELIANOV, V ENGELAGE, J EPPLEY, G ERAZMUS, B ESTIENNE, M EUN, L FACHINI, P FATEMI, R FEDORISIN, J FENG, A FILIP, P FINCH, E FINE, V FISYAK, Y GAGLIARDI, CA GAILLARD, L GANGADHARAN, DR GANTI, MS GARCIA-SOLIS, E GHAZIKHANIAN, V GHOSH, P GORBUNOV, YN GORDON, A GREBENYUK, O GROSNICK, D GRUBE, B GUERTIN, SM GUIMARAES, KSFF GUPTA, A GUPTA, N GURYN, W HAAG, B HALLMAN, TJ HAMED, A HARRIS, JW HE, W HEINZ, M HEPPLEMANN, S HIPPOLYTE, B HIRSCH, A HJORT, E HOFFMAN, AM HOFFMANN, GW HOFMAN, DJ HOLLIS, RS HUANG, HZ HUMANIC, TJ IGO, G IORDANOVA, A JACOBS, P JACOBS, WW JAKI, P JIN, F JONES, CL JONES, PG JOSEPH, J JUDD, EG KABANA, S KAJIMOTO, K KANG, K KAPITAN, J KAPLAN, M KEANE, D KECHECHYAN, A KETTLER, D KHODYREV, VY KIKOLA, DP KIRYLUK, J KISIEL, A KLEIN, SR KNOSPE, AG KOCOLOSKI, A KOETKE, DD KOPYTINE, M KOTCHENDA, L KOUCHPIL, V KRAVTSOV, P KRAVTSOV, VI KRUEGER, K KRUS, M KUHN, C KUMAR, L KURNADI, P LAMONT, MAC LANDGRAF, JM LAPOINTE, S LAURET, J LEBEDEV, A LEDNICKY, R LEE, CH LEIGHT, W LEVINE, MJ LI, C LI, Y LIN, G LIN, X LINDENBAUM, SJ LISA, MA LIU, F LIU, H LIU, J LIU, L LJUBICIC, T LLOPE, WJ LONGACRE, RS LOVE, WA LU, Y LUDLAM, T LYNN, D MA, GL MA, YG MAHAPATRA, DP MAJKA, R MALL, OI MANGOTRA, LK MANWEILER, R MARGETIS, S MARKERT, C MATIS, HS MATULENKO, YA MCSHANE, TS MESCHANIN, A MILLNER, R MINAEV, NG MIODUSZEWSKI, S MISCHKE, A MITCHELL, J MOHANTY, B MOROZOV, DA MUNHOZ, MG NANDI, BK NATTRASS, C NAYAK, TK NELSON, JM NEPALI, C NETRAKANTI, PK NG, MJ NOGACH, LV NURUSHEV, SB ODYNIEC, G OGAWA, A OKADA, H OKOROKOV, V OLSON, D PACHR, M PAGE, BS PAL, SK PANDIT, Y PANEBRATSEV, Y PAWLAK, T PEITZMANN, T PEREVOZTCHIKOV, V PERKINS, C PERYT, W PHATAK, SC PLANINIC, M PLUTA, J POLJAK, N POSKANZER, AM POTUKUCHI, BVKS PRINDLE, D PRUNEAU, C PRUTHI, NK PUTSCHKE, J RANIWALA, R RANIWALA, S RAY, RL REDWINE, R REED, R RIDIGER, A RITTER, HG ROBERTS, JB ROGACHEVSKIY, OV ROMERO, JL ROSE, A ROY, C RUAN, L RUSSCHER, MJ RYKOV, V SAHOO, R SAKREJDA, I SAKUMA, T SALUR, S SANDWEISS, J SARSOUR, M SAVIN, I SCHAMBACH, J SCHARENBERG, RP SCHMITZ, N SEGER, J SELYUZHENKOV, I SEYBOTH, R SHABETAI, A SHAHALIEV, E SHAO, M SHARMA, M SHI, SS SHI, XH SICHTERMANN, E SIMON, F SINGARAJU, RN SKOBY, MJ SMIRNOV, N SNELLINGS, R SORENSEN, P SOWINSKI, J SPINKA, HM SRIVASTAVA, B STADNIK, A STANISLAUS, TDS STASZAK, D STRIKHANOV, M STRINGFELLOW, B SUAIDE, AAP SUAREZ, MC SUBBA, NL SUMBERA, M SUN, XM SUN, Y SUN, Z SURROW, B SYMONS, TJM DE TOLEDO, AS TAKAHASHI, J TANG, AH TANG, Z TARNOWSKY, T THEIN, D THOMAS, JH TIAN, J TIMMINS, AR TIMOSHENKO, S TLUSTY, D TOKAREV, M TRAINOR, TA TRAM, VN TRATTNER, AL TRENTALANGE, S TRIBBLE, RE TSAI, OD ULERY, J ULLRICH, T UNDERWOOD, DG VAN BUREN, G VAN LEEUWEN, M MOLEN, AMV VANFOSSEN, JA VARMA, R VASCONCELOS, GMS VASILEVSKI, IM VASILIEV, AN VIDEBAEK, F VIGDOR, SE VIYOGI, YP VOKAL, S VOLOSHIN, SA WADA, M WAGGONER, WT WALKER, M WANG, F WANG, G WANG, JS WANG, Q WANG, X WANG, XL WANG, Y WEBB, JC WESTFALL, GD WHITTEN, C WIEMAN, H WISSINK, SW WITT, R WU, Y XU, N XU, QH XU, Y XU, Z YEPES, P YOO, IK YUE, Q ZAWISZA, M ZBROSZCZYK, H ZHAN, W ZHANG, H ZHANG, S ZHANG, WM ZHANG, Y ZHANG, ZP ZHAO, Y ZHONG, C ZHOU, J ZOULKARNEEV, R ZOULKARNEEVA, Y ZUO, JX |
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Subject |
quark-gluon plasma
heavy-ion collisions proton-proton collisions strangeness enhancement nucleus collisions pp collisions model rule collaboration conservation particle production strangeness enhancement canonical suppression quark-gluon plasma resonances |
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Description |
We study the beam-energy and system-size dependence of phi meson production (using the hadronic decay mode phi -> K(+) K(-)) by comparing the new results from Cu + Cu collisions and previously reported Au + Au collisions at root s(NN) = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity (vertical bar y vertical bar < 0.5) for 0.4 < p(T) < 5 GeV/c. At a given beam energy, the transverse momentum distributions for phi mesons are observed to be similar in yield and shape for Cu + Cu and Au + Au colliding systems with similar average numbers of participating nucleons. The phi meson yields in nucleus-nucleus collisions, normalized by the average number of participating nucleons, are found to be enhanced relative to those from p + p collisions. The enhancement for phi mesons lies between strange hadrons having net strangeness = 1 (K(-) and ) and net strangeness = 2 (Xi). The enhancement for phi mesons is observed to be higher at root s(NN) = 200 GeV compared to 62.4 GeV. These observations for the produced phi(s (s) over bar) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems. (C) 2009
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Publisher |
ELSEVIER SCIENCE BV
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Date |
2011-11-07T15:51:03Z
2011-12-26T13:01:10Z 2011-12-27T05:44:18Z 2011-11-07T15:51:03Z 2011-12-26T13:01:10Z 2011-12-27T05:44:18Z 2009 |
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Type |
Article
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Identifier |
PHYSICS LETTERS B, 673(3), 183-191
0370-2693 http://dx.doi.org/10.1016/j.physletb.2009.02.037 http://dspace.library.iitb.ac.in/xmlui/handle/10054/16572 http://hdl.handle.net/10054/16572 |
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Language |
en
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