Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation

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Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation

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Title: Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
Author: ABELEV, BI; AGGARWAL, MM; AHAMMED, Z; ALAKHVERDYANTS, AV; ANDERSON, BD; ARKHIPKIN, D; AVERICHEV, GS; BALEWSKI, J; BARANNIKOVA, O; BARNBY, LS; BAUMGART, S; BEAVIS, DR; BELLWIED, R; BENEDOSSO, F; BETANCOURT, MJ; BETTS, RR; BHASIN, A; BHATI, AK; BICHSEL, H; BIELCIK, J; BIELCIKOVA, J; BIRITZ, B; BLAND, LC; BNZAROV, I; BONNER, BE; BOUCHET, J; BRAIDOT, E; BRANDIN, AV; BRIDGEMAN, A; BRUNA, E; BUELTMANN, S; BURTON, TP; CAI, XZ; CAINES, H; SANCHEZ, MCD; 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, P; CLARKE, RF; CODRINGTON, MJM; CORLISS, R; CORMIER, TM; COSENTINO, MR; CRAMER, JG; CRAWFORD, HJ; DAS, D; DASH, S; DAUGHERITY, M; DE SILVA, LC; DEDOVICH, TG; DEPHILLIPS, M; DEREVSCHIKOV, AA; DE SOUZA, RD; DIDENKO, L; DJAWOTHO, P; DZHORDZHADZE, V; DOGRA, SM; DONG, X; DRACHENBERG, JL; DRAPER, JE; DUNLOP, JC; MAZUMDAR, MRD; EFIMOV, LG; ELHALHULI, E; ELNIMR, M; 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; GANGADHARAN, DR; GANTI, MS; GARCIA-SOLIS, EJ; GEROMITSOS, A; GEURTS, F; 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; HEINZ, M; HEPPELMANN, S; HIRSCH, A; HJORT, E; HOFFMAN, AM; HOFFMANN, GW; HOFMAN, DJ; HOLLIS, RS; HUANG, HZ; HUMANIC, TJ; HUO, L; IGO, G; IORDANOVA, A; JACOBS, P; JACOBS, WW; JAKL, P; JENA, C; JIN, F; JONES, CL; JONES, PG; JOSEPH, J; JUDD, EG; KABANA, S; KAJIMOTO, K; KANG, K; KAPITAN, J; KAUDER, K; KEANE, D; KECHECHYAN, A; KETTLER, D; KHODYREV, VY; KIKOLA, DP; KIRYLUK, J; KISIEL, A; KLEIN, SR; KNOSPE, AG; KOCOLOSKI, A; KOETKE, DD; KONZER, J; KOPYTINE, M; KORALT, I; KORSCH, W; KOTCHENDA, L; KOUCHPIL, V; KRAVTSOV, P; KRAVTSOV, VI; KRUEGER, K; KRUS, M; KUMAR, L; KURNADI, P; LAMONT, MAC; LANDGRAF, JM; LAPOINTE, S; LAURET, J; LEBEDEV, A; LEDNICKY, R; LEE, CH; LEE, JH; LEIGHT, W; LEVINE, MJ; LI, C; LI, N; LI, Y; LIN, G; LINDENBAUM, SJ; LISA, MA; LIU, F; LIU, H; LIU, J; LIU, L; LJUBICIC, T; LLOPE, WJ; LONGACRE, RS; LOVE, WA; LU, Y; LUDLAM, T; MA, GL; MA, YG; MAHAPATRA, DP; MAJKA, R; MALL, OI; MANGOTRA, LK; MANWEILER, R; MARGETIS, S; MARKERT, C; MASUI, H; MATIS, HS; MATULENKO, YA; MCDONALD, D; MCSHANE, TS; MESCHANIN, A; MILNER, R; MINAEV, NG; MIODUSZEWSKI, S; MISCHKE, A; MOHANTY, B; MOROZOV, DA; MUNHOZ, MG; NANDI, BK; NATTRASS, C; NAYAK, TK; NELSON, JM; 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; PILE, P; PLANINIC, M; PLOSKON, MA; PLUTA, J; PLYKU, D; POLJAK, N; POSKANZER, AM; POTUKUCHI, BVKS; PRINDLE, D; PRUNEAU, C; PRUTHI, NK; PUJAHARI, PR; 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; SAHOO, R; SAKAI, S; SAKREJDA, I; SAKUMA, T; SALUR, S; SANDWEISS, J; SCHAMBACH, J; SCHARENBERG, RP; SCHMITZ, N; SEELE, J; SEGER, J; SELYUZHENKOV, I; SEMERTZIDIS, Y; SEYBOTH, P; SHAHALIEV, E; SHAO, M; SHARMA, M; SHI, SS; SHI, XH; SICHTERMANN, EP; SIMON, F; SINGARAJU, RN; SKOBY, MJ; SMIRNOV, N; SORENSEN, P; SOWINSKI, J; SPINKA, HM; SRIVASTAVA, B; 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, A; TAKAHASHI, J; TANG, AH; TANG, Z; TARINI, LH; TARNOWSKY, T; THEIN, D; THOMAS, JH; TIAN, J; TIMMINS, AR; TIMOSHENKO, S; TLUSTY, D; TOKAREV, M; TRAM, VN; TRENTALANGE, S; TRIBBLE, RE; TSAI, OD; ULERY, J; ULLRICH, T; UNDERWOOD, DG; VAN BUREN, G; VAN NIEUWENHUIZEN, G; VANFOSSEN, JA; VARMA, R; VASCONCELOS, GMS; VASILIEV, AN; VIDEBAEK, F; VIYOGI, YP; VOKAL, S; VOLOSHIN, SA; WADA, M; WALKER, M; WANG, F; WANG, G; WANG, H; WANG, JS; WANG, Q; WANG, X; WANG, XL; WANG, Y; WEBB, G; WEBB, JC; WESTFALL, GD; WHITTEN, C; WIEMAN, H; WISSINK, SW; WITT, R; WU, Y; XIE, W; XU, N; XU, QH; XU, Y; XU, Z; YANG, Y; YEPES, P; YIP, K; YOO, IK; YUE, Q; ZAWISZA, M; ZBROSZCZYK, H; ZHAN, W; ZHANG, S; ZHANG, WM; ZHANG, XP; ZHANG, Y; ZHANG, ZP; ZHAO, Y; ZHONG, C; ZHOU, J; ZHU, X; ZOULKARNEEV, R; ZOULKARNEEVA, Y; ZUO, JX
Abstract: Parity-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three-particle azimuthal correlator which is a P even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au+Au and Cu+Cu collisions at s(NN)=200 GeV using the STAR detector. A signal consistent with several expectations from the theory is detected. We discuss possible contributions from other effects that are not related to parity violation.
URI: http://dx.doi.org/10.1103/PhysRevLett.103.251601
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12953
http://hdl.handle.net/10054/12953
Date: 2009


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