Spin alignment measurements of the K*(0)(892) and phi(1020) vector mesons in heavy ion collisions at root S(NN)=200 GeV
DSpace at IIT Bombay
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Title |
Spin alignment measurements of the K*(0)(892) and phi(1020) vector mesons in heavy ion collisions at root S(NN)=200 GeV
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Creator |
ABELEV, BI
AGGARWAL, MM AHAMMED, Z ANDERSON, BD ARKHIPKIN, D AVERICHEV, GS BAI, Y BALEWSKI, J BARANNIKOVA, O BARNBY, LS BAUDOT, J GARCIA-SOLIS, E GHAZIKHANIAN, V GHOSH, P GORBUNOV, YN GORDON, A GREBENYUK, O GROSNICK, D GRUBE, B GUERTIN, SM GUIMARAES, KSFF BAUMGART, S GUPTA, A GUPTA, N GURYN, W HAAG, B HALLMAN, TJ HAMED, A HARRIS, JW HE, W HEINZ, M HEPPELMANN, S BEAVIS, DR HIPPOLYTE, B HIRSCH, A HOFFMAN, AM HOFFMANN, GW HOFMAN, DJ HOLLIS, RS HUANG, HZ HUGHES, EW HUMANIC, TJ IGO, G BELLWIED, R IORDANOVA, A JACOBS, P JACOBS, WW JAKL, P JIN, F JONES, PG JUDD, EG KABANA, S KAJIMOTO, K KANG, K BENEDOSSO, F KAPITAN, J KAPLAN, M KEANE, D KECHECHYAN, A KETTLER, D KHODYREV, VY KIRYLUK, J KISIEL, A KLEIN, SR KNOSPE, AG BETTS, RR KOCOLOSKI, A KOETKE, DD KOLLEGGER, T KOPYTINE, M KOTCHENDA, L KOUCHPIL, V KRAVTSOV, P KRAVTSOV, VI KRUEGER, K KUHN, C BHARDWAJ, S KUMAR, A KUMAR, L KURNADI, P LAMONT, MAC LANDGRAF, JM LANGE, S LAPOINTE, S LAUE, F LAURET, J LEBEDEV, A BHASIN, A LEDNICKY, R LEE, CH LEVINE, MJ LI, C LI, Y LIN, G LIN, X LINDENBAUM, SJ LISA, MA LIU, F BHATI, AK LIU, H LIU, J LIU, L LJUBICIC, T LLOPE, WJ LONGACRE, RS LOVE, WA LU, Y LUDLAM, T LYNN, D BICHSEL, H MA, GL MA, JG MA, YG MAHAPATRA, DP MAJKA, R MANGOTRA, LK MANWEILER, R MARGETIS, S MARKERT, C MATIS, HS BIELCIK, J MATULENKO, YA MCSHANE, TS MESCHANIN, A MILLANE, J MILLER, ML MINAEV, NG MIODUSZEWSKI, S MISCHKE, A MITCHELL, J MOHANTY, B BIELCIKOVA, J MOROZOV, DA MUNHOZ, MG NANDI, BK NATTRASS, C NAYAK, TK NELSON, JM NEPALI, C NETRAKANTI, PK NG, MJ NOGACH, LV BIRITZ, B NURUSHEV, SB ODYNIEC, G OGAWA, A OKADA, H OKOROKOV, V OLSON, D PACHR, M PAL, SK PANEBRATSEV, Y PAWLAK, T BLAND, LC PEITZMANN, T PEREVOZTCHIKOV, V PERKINS, C PERYT, W PHATAK, SC PLANINIC, M PLUTA, J POLJAK, N PORILE, N POSKANZER, AM BOMBARA, M POTEKHIN, M POTUKUCHI, BVKS PRINDLE, D PRUNEAU, C PRUTHI, NK PUTSCHKE, J QATTAN, IA RANIWALA, R RANIWALA, S RAY, RL BONNER, BE RIDIGER, A RITTER, HG ROBERTS, JB ROGACHEVSKIY, OV ROMERO, JL ROSE, A ROY, C RUAN, L RUSSCHER, MJ RYKOV, V BOTJE, M SAHOO, R SAKREJDA, I SAKUMA, T SALUR, S SANDWEISS, J SARSOUR, M SCHAMBACH, J SCHARENBERG, RP SCHMITZ, N SEGER, J BOUCHET, J SELYUZHENKOV, I SEYBOTH, P SHABETAI, A SHAHALIEV, E SHAO, M SHARMA, M SHI, SS SHI, XH SICHTERMANN, EP SIMON, F BRAIDOT, E SINGARAJU, RN SKOBY, MJ SMIRNOV, N SNELLINGS, R SORENSEN, P SOWINSKI, J SPINKA, HM SRIVASTAVA, B STADNIK, A STANISLAUS, TDS BRANDIN, AV STASZAK, D STOCK, R STRIKHANOV, M STRINGFELLOW, B SUAIDE, AAP SUAREZ, MC SUBBA, NL SUMBERA, M SUN, XM SUN, Z BUELTMANN, S SURROW, B SYMONS, TJM DE TOLEDO, AS TAKAHASHI, J TANG, AH TANG, Z TARNOWSKY, T THEIN, D THOMAS, JH TIAN, J BURTON, TP TIMMINS, AR TIMOSHENKO, S TOKAREV, M TRAINOR, TA TRAM, VN TRATTNER, AL TRENTALANGE, S TRIBBLE, RE TSAI, OD ULERY, J BYSTERSKY, M ULLRICH, T UNDERWOOD, DG VAN BUREN, G VAN DER KOLK, N VAN LEEUWEN, M MOLEN, AMV VARMA, R VASCONCELOS, GMS VASILEVSKI, IM VASILIEV, AN CAI, XZ VIDEBAEK, F VIGDOR, SE VIYOGI, YP VOKAL, S VOLOSHIN, SA WADA, M WAGGONER, WT WANG, F WANG, G WANG, JS CAINES, H WANG, Q WANG, X WANG, XL WANG, Y WEBB, JC WESTFALL, GD WHITTEN, C WIEMAN, H WISSINK, SW WITT, R SANCHEZ, MCD WU, J WU, Y XU, N XU, QH XU, Z YEPES, P YOO, IK YUE, Q ZAWISZA, M ZBROSZCZYK, H CALLNER, J ZHAN, W ZHANG, H ZHANG, S ZHANG, WM ZHANG, Y ZHANG, ZP ZHAO, Y ZHONG, C ZHOU, J ZOULKARNEEV, R CATU, O ZOULKARNEEVA, Y ZUO, JX 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, MJM COFFIN, JP CORMIER, TM COSENTINO, MR CRAMER, JG CRAWFORD, HJ DAS, D DASH, S DAUGHERITY, M DE MOURA, MM DEDOVICH, TG DEPHILLIPS, M DEREVSCHIKOV, AA DE SOUZA, RD DIDENKO, L DIETEL, T 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 |
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Subject |
quark-gluon plasma
hyperon polarization magnetic-moment high-energies hadron-production k&p interactions z(0) decays signature protons pp |
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Description |
We present the first spin alignment measurements for the K*(0)(892) and phi(1020) vector mesons produced at midrapidity with transverse momenta up to 5 GeV/c at root s(NN) = 200 GeV at RHIC. The diagonal spin-density matrix elements with respect to the reaction plane in Au+Au collisions are rho(00) = 0.32 +/- 0.04 (stat) +/- 0.09 (syst) for the K*(0) (0.8 < p(T) < 5.0 GeV/c) and rho(00) = 0.34 +/- 0.02 (stat) +/- 0.03 (syst) for the phi (0.4 < p(T) < 5.0 GeV/c) and are constant with transverse momentum and collision centrality. The data are consistent with the unpolarized expectation of 1/3 and thus no evidence is found for the transfer of the orbital angular momentum of the colliding system to the vector-meson spins. Spin alignments for K(*0) and phi in Au+Au collisions were also measured with respect to the particle's production plane. The phi result, rho(00) = 0.41 +/- 0.02 (stat) +/- 0.04 (syst), is consistent with that in p+p collisions, rho(00) = 0.39 +/- 0.03 (stat) +/- 0.06 (syst), also measured in this work. The measurements thus constrain the possible size of polarization phenomena in the production dynamics of vector mesons.
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Publisher |
AMER PHYSICAL SOC
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Date |
2011-11-07T14:32:35Z
2011-12-26T13:00:39Z 2011-12-27T05:41:26Z 2011-11-07T14:32:35Z 2011-12-26T13:00:39Z 2011-12-27T05:41:26Z 2008 |
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Type |
Article
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Identifier |
PHYSICAL REVIEW C, 77(6)
0556-2813 http://dx.doi.org/10.1103/PhysRevC.77.061902 http://dspace.library.iitb.ac.in/xmlui/handle/10054/16530 http://hdl.handle.net/10054/16530 |
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Language |
en
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