Beam-energy and system-size dependence of dynamical net charge fluctuations
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; HALLMAN, TJ; HAMED, A; HARRIS, JW; HE, W; HEINZ, M; HEPPELMANN, S; HIPPOLYTE, B; BEAVIS, DR; HIRSCH, A; HJORT, E; HOFFMAN, AM; HOFFMANN, GW; HOFMAN, DJ; HOLLIS, RS; HUANG, HZ; HUMANIC, TJ; HUO, L; IGO, G; BELLWIED, R; IORDANOVA, A; JACOBS, P; JACOBS, WW; JAKL, P; JENA, C; JIN, F; JONES, CL; JONES, PG; JOSEPH, J; JUDD, EG; BENEDOSSO, F; KABANA, S; KAJIMOTO, K; KANG, K; KAPITAN, J; KAPLAN, M; KEANE, D; KECHECHYAN, A; KETTLER, D; KHODYREV, VY; KIRYLUK, J; BETTS, RR; KISIEL, A; KLEIN, SR; KNOSPE, AG; KOCOLOSKI, A; KOETKE, DD; KOPYTINE, M; KOTCHENDA, L; KOUCHPIL, V; KRAVTSOV, P; KRAVTSOV, VI; BHARDWAJ, S; KRUEGER, K; KUHN, C; KUMAR, A; KUMAR, L; KURNADI, P; LAMONT, MAC; LANDGRAF, JM; LAPOINTE, S; LAUE, F; LAURET, J; BHASIN, A; LEBEDEV, A; LEDNICKY, R; LEE, CH; LEVINE, MJ; LI, C; LI, Y; LIN, G; LIN, X; LINDENBAUM, SJ; LISA, MA; BHATI, AK; LIU, F; LIU, J; LIU, L; LJUBICIC, T; LLOPE, WJ; LONGACRE, RS; LU, Y; LUDLAM, T; LYNN, D; MA, GL; BICHSEL, H; MA, JG; MA, YG; MAHAPATRA, DP; MAJKA, R; MANGOTRA, LK; MANWEILER, R; MARGETIS, S; MARKERT, C; MATIS, HS; MATULENKO, YA; BIELCIK, J; MCSHANE, TS; MESCHANIN, A; MILLANE, J; MILLER, ML; MINAEV, NG; MIODUSZEWSKI, S; MISCHKE, A; MITCHELL, J; MOHANTY, B; MOROZOV, DA; BIELCIKOVA, J; MUNHOZ, MG; NANDI, BK; NATTRASS, C; NAYAK, TK; NELSON, JM; NEPALI, C; NETRAKANTI, PK; NG, MJ; NOGACH, LV; NURUSHEV, SB; BIRITZ, B; ODYNIEC, G; OGAWA, A; OKADA, H; OKOROKOV, V; OLSON, D; PACHR, M; PAL, SK; PANEBRATSEV, Y; PAWLAK, T; PEITZMANN, T; BLAND, LC; PEREVOZTCHIKOV, V; PERKINS, C; PERYT, W; PHATAK, SC; PLANINIC, M; PLUTA, J; POLJAK, N; PORILE, N; POSKANZER, AM; POTEKHIN, M; BOMBARA, M; POTUKUCHI, BVKS; PRINDLE, D; PRUNEAU, C; PRUTHI, NK; PUTSCHKE, J; RANIWALA, R; RANIWALA, S; RAY, RL; RIDIGER, A; RITTER, HG; BONNER, BE; ROBERTS, JB; ROGACHEVSKIY, OV; ROMERO, JL; ROSE, A; ROY, C; RUAN, L; RUSSCHER, MJ; RYKOV, V; SAHOO, R; SAKREJDA, I; BOTJE, M; SAKUMA, T; SALUR, S; SANDWEISS, J; SARSOUR, M; SCHAMBACH, J; SCHARENBERG, RP; SCHMITZ, N; SEGER, J; SELYUZHENKOV, I; SEYBOTH, P; BOUCHET, J; SHABETAI, A; SHAHALIEV, E; SHAO, M; SHARMA, M; SHI, SS; SHI, XH; SICHTERMANN, EP; SIMON, F; SINGARAJU, RN; SKOBY, MJ; BRAIDOT, E; SMIRNOV, N; SNELLINGS, R; SORENSEN, P; SOWINSKI, J; SPINKA, HM; SRIVASTAVA, B; STADNIK, A; STANISLAUS, TDS; STASZAK, D; STRIKHANOV, M; BRANDIN, AV; STRINGFELLOW, B; SUAIDE, AAP; SUAREZ, MC; SUBBA, NL; SUMBERA, M; SUN, XM; SUN, Y; SUN, Z; SURROW, B; SYMONS, TJM; BUELTMANN, S; DE TOLEDO, AS; TAKAHASHI, J; TANG, AH; TANG, Z; TARNOWSKY, T; THEIN, D; THOMAS, JH; TIAN, J; TIMMINS, AR; TIMOSHENKO, S; BURTON, TP; TOKAREV, M; TRAM, VN; TRATTNER, AL; TRENTALANGE, S; TRIBBLE, RE; TSAI, OD; ULERY, J; ULLRICH, T; UNDERWOOD, DG; BUREN, GV; BYSTERSKY, M; VAN DER KOLK, N; VAN LEEUWEN, M; MOLEN, AMV; VARMA, R; VASCONCELOS, GMS; VASILEVSKI, IM; VASILIEV, AN; VIDEBAEK, F; VIGDOR, SE; VIYOGI, YP; CAI, XZ; VOKAL, S; VOLOSHIN, SA; WADA, M; WAGGONER, WT; WANG, F; WANG, G; WANG, JS; WANG, Q; WANG, X; WANG, XL; CAINES, H; WANG, Y; WEBB, JC; WESTFALL, GD; WHITTEN, C; WIEMAN, H; WISSINK, SW; WITT, R; WU, J; WU, Y; XU, N; SANCHEZ, MCD; XU, QH; XU, Y; XU, Z; YEPES, P; YOO, IK; YUE, Q; ZAWISZA, M; ZBROSZCZYK, H; ZHAN, W; ZHANG, H; CALLNER, J; ZHANG, S; ZHANG, WM; ZHANG, Y; ZHANG, ZP; ZHAO, Y; ZHONG, C; ZHOU, J; ZOULKARNEEV, R; ZOULKARNEEVA, Y; ZUO, JX; 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, MJM; COFFIN, JP; CORMIER, TM; COSENTINO, MR; CRAMER, JG; CRAWFORD, HJ; DAS, D; DASH, S; DAUGHERITY, M; DE MOIRA, MM; DEDOVICH, TG; DEPHILLIPS, M; DEREVSCHIKOV, AA; DE SOUZA, RD; DIDENKO, L; DICTEL, 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
Date:
2009
Abstract:
We present measurements of net charge fluctuations in Au+Au collisions at s(NN)=19.6, 62.4, 130, and 200 GeV, Cu+Cu collisions at s(NN)=62.4 and 200 GeV, and p+p collisions at s=200 GeV using the dynamical net charge fluctuations measure nu(+-,dyn). We observe that the dynamical fluctuations are nonzero at all energies and exhibit a modest dependence on beam energy. A weak system size dependence is also observed. We examine the collision centrality dependence of the net charge fluctuations and find that dynamical net charge fluctuations violate 1/N(ch) scaling but display approximate 1/N(part) scaling. We also study the azimuthal and rapidity dependence of the net charge correlation strength and observe strong dependence on the azimuthal angular range and pseudorapidity widths integrated to measure the correlation.
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