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98 results on '"Trainor TA"'

1. Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, P, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DIDENKO, L, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GLISKE, S, GORBUNOV, YN, GREBENYUK, OG, GROSNICK, D, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, WW, JENA, C, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUO, X, LUSZCZAK, A, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MOROZOV, B, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NOGACH, LV, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VIDEBK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YI, Y, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: Gev Au+Au Collisions, Star, Perspective, Quark-Gluon Plasma, Heavy-Ion Collisions, Collective Flow, Transverse Flow, Collaboration, Anisotropic Flow
Abstract: STAR's measurements of directed flow (v(1)) around midrapidity for pi(+/-), K-+/-, K-S(0), p, and (p) over bar in Au + Au collisions at root s(NN) = 200 GeV are presented. A negative v(1) (y) slope is observed for most of produced particles (pi(+/-), K-+/-, K-S(0), p, and (p) over bar). In 5%-30% central collisions, a sizable difference is present between the v(1)(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v(1) excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v(1) for both pions and protons, none of them can describe v(1()y) forpions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v(1)(y) slopes of protons and antiprotons.
Published: 2012
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2. Strangeness Enhancement in Cu-Cu and Au-Au Collisions at root s(NN)=200 GeV

Author: AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BEAVIS, DR, BEHERA, NK, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRIDGEMAN, A, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, P, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, ESTIENNE, M, EUN, L, EVDOKIMOV, O, FATEMI, R, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, OG, GROSNICK, D, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMANN, GW, HOFMAN, DJ, HUANG, B, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, P, JACOBS, WW, JENA, C, JIN, F, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KNOSPE, AG, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUKASHOV, EV, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MOROZOV, B, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NAYAK, TK, NELSON, JM, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEI, H, PEITZMANN, T, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHAUB, J, SCHMAH, AM, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, 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, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: Energy, Particle, Dependence
Abstract: We report new STAR measurements of midrapidity yields for the Lambda, (Lambda) over bar, K-S(0), Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+) particles in Cu + Cu collisions at root s(NN) = 200 GeV, and midrapidity yields for the Lambda, (Lambda) over bar, K-S(0) particles in Au + Au at root s(NN) = 200 GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu + Cu collisions than in Au + Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.
Published: 2012
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3. Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at root s=200 GeV

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BRIDGEMAN, A, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, P, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DIDENKO, L, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GLISKE, S, GORBUNOV, YN, GREBENYUK, OG, GROSNICK, D, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, WW, JENA, C, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KOWALIK, K, KRAVTSOV, P, KRUEGER, K, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUO, X, LUSZCZAK, A, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MALL, OI, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MILLANE, J, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MOROZOV, B, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NOGACH, LV, NOVAK, J, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, OSTROWSKI, P, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YI, Y, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: Deep-Inelastic-Scattering, Structure-Function G(1)(N), Qcd Analysis, Star, Photoproduction, Proton, P Collisions, Q(2)-Dependence, Dependent Structure-Function, Nucleon
Abstract: We report STAR measurements of the longitudinal double-spin asymmetry A(LL), the transverse singlespin asymmetry A(N), and the transverse double-spin asymmetries A(Sigma) and A(TT) for inclusive jet production at mid-rapidity in polarized p + p collisions at a center-of-mass energy of root s = 200 GeV. The data represent integrated luminosities of 7.6 pb(-1) with longitudinal polarization and 1.8 pb(-1) with transverse polarization, with 50%-55% beam polarization, and were recorded in 2005 and 2006. No evidence is found for the existence of statistically significant jet A(N), A(Sigma), or A(TT) at mid-rapidity. Recent model calculations indicate the A(N) results may provide new limits on the gluon Sivers distribution in the proton. The asymmetry A(LL) significantly improves the knowledge of gluon polarization in the nucleon.
Published: 2012

4. rho(0) photoproduction in AuAu collisions at root s(NN)=62.4 GeV measured with the STAR detector

Author: AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BEAVIS, DR, BEHERA, NK, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRIDGEMAN, A, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, P, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, ESTIENNE, M, EUN, L, EVDOKIMOV, O, FATEMI, R, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GEURTS, F, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, OG, GROSNICK, D, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMANN, GW, HOFMAN, DJ, HUANG, B, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, P, JACOBS, WW, JENA, C, JIN, F, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KNOSPE, AG, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUKASHOV, EV, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MOROZOV, B, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NAYAK, TK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEI, H, PEITZMANN, T, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHAUB, J, SCHMAH, AM, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, 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, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: Hera, Physics, Time Projection Chamber, Heavy-Ion Collisions, Saturation
Abstract: Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent rho(0) photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent rho(0) photoproduction with nuclear breakup is 10.5 +/- 1.5 +/- 1.6mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is 4.4 +/- 0.6, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed 15% +/- 55% increase between 130 GeV and 200 GeV.
Published: 2012
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5. Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCDLB, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, P, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DIDENKO, L, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GIBSON, A, GLISKE, S, GORBUNOV, YN, GREBENYUK, OG, GROSNICK, D, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, WW, JENA, C, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUO, X, LUSZCZAK, A, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MALL, OI, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MOROZOV, B, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NOGACH, LV, NOVAK, J, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, OSTROWSKI, P, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, JR, JAV, VARMA, R, VASCONCELOS, GMS, VIDEBK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, JR, CW, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YI, Y, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: D+Au Collisions, Star Experiment, Restoration, Perspective, Quark-Gluon Plasma, Particle Identification, Resistive Plate Chambers, Decays, Collaboration, Transverse-Momentum
Abstract: We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e(+) e(-) decays, from root s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at the Relativistic Heavy Ion Collider. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson decays and heavy-flavor decays (charmonium and open charm correlation) are found to describe the data. The extracted omega -> e(+) e(-) invariant yields are consistent with previous measurements. The mid-rapidity yields (dN/dy) of phi and J/psi are extracted through their di-electron decay channels and are consistent with the previous measurements of phi -> K+ K- and J/psi -> e(+) e(-). Our results suggest a new upper limit of the branching ratio of the eta -> e(+) e(-) of 1.7 x 10(-5) at the 90% confidence level.
Published: 2012

6. Transverse single-spin asymmetry and cross section for pi(0) and eta mesons at large Feynman x in p(up arrow) + p collisions at root s=200 GeV

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANNERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, P, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DIDENKO, L, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GLISKE, S, GORBUNOV, YN, GREBENYUK, OG, GROSNICK, D, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, WW, JENA, C, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUO, X, LUSZCZAK, A, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MALL, OI, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MOROZOV, B, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NOGACH, LV, NOVAK, J, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, OSTROWSKI, P, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YI, Y, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, and ZOULKARNEEVA, Y
Subjects: Fragmentation, Polarization, Gev/C, Beam
Abstract: Measurements of the differential cross section and the transverse single-spin asymmetry, A(N), vs x(F) for pi(0) and eta mesons are reported for 0.4 < x(F) < 0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb(-1) was analyzed, which was recorded during p(up arrow) + p collisions at root s = 200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. The cross section for pi(0), including the previously unmeasured region of x(F) > 0.55, is consistent with a perturbative QCD prediction, and the eta/pi(0) cross-section ratio agrees with existing midrapidity measurements. For 0.55 < x(F) < 0.75, the average A(N) for eta is 0.210 +/- 0.056, and that for pi(0) is 0.081 +/- 0.016. The probability that these two asymmetries are equal is similar to 3%.
Published: 2012
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7. Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, CD, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, P, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DIDENKO, L, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GEURTS, F, GLISKE, S, GORBUNOV, YN, GREBENYUK, OG, GROSNICK, D, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, HUO, L, IGO, G, JACOBS, WW, JENA, C, JOSEPH, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LU, Y, LUO, X, LUSZCZAK, A, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MALL, OI, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MOROZOV, B, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NOGACH, LV, NOVAK, J, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, OLSON, D, OSTROWSKI, P, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEADMAN, SG, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, JR, JAV, VARMA, R, VASCONCELOS, GMS, VIDEBK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, JR, CW, WIEMAN, H, WISSINK, SW, WITT, R, WITZKE, W, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YI, Y, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and COLLABORATION, S
Subjects: Charm, Star, Electromagnetic Calorimeter, Hadronization
Abstract: We report measurements of charmed-hadron (D-0, D*) production cross sections at midrapidity in p + p collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays D-0 -> K- pi(+), D*(+) -> D-0 pi(+) -> K-pi(+)pi(+) and their charge conjugates, covering the p(T) range of 0.6-2.0 and 2.0-6.0 GeV/c for D-0 and D*(+), respectively. From this analysis, the charm-pair production cross section at midrapidity is d sigma/dy vertical bar(c (c) over bar)(y-0) = 170+/-45(stat)(-59)(+38()sys) mu b. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a fixed-order next-to-leading logarithm calculation.
Published: 2012

8. Spectra of identified high-p(T) pi(+/-) and p((p)over-bar ) in Cu + Cu collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, BEAVIS, DR, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HAN, LX, BELLWIED, R, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, BENEDOSSO, F, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, BETANCOURT, MJ, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, KEANE, D, BETTS, RR, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, BHASIN, A, KONZER, J, KOPYTINE, M, KORALT, I, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, BHATI, AK, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, BICHSEL, H, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, Z, LIN, G, BIELCIK, J, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, BIELCIKOVA, J, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, BIRITZ, B, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITROVSKI, MK, BLAND, LC, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, BONNER, BE, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, BOUCHET, J, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, BRAIDOT, E, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, BRANDIN, AV, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, REHBERG, JM, RITTER, HG, ROBERTS, JB, BRIDGEMAN, A, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, BRUNA, E, SALUR, S, SANDWEISS, J, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, BUELTMANN, S, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, BUNZAROV, I, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, BURTON, TP, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, CAI, XZ, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, CAINES, H, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, SANCHEZ, MCD, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, CATU, O, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, CEBRA, D, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, Y, XIE, W, CENDEJAS, R, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, CERVANTES, MC, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, J, CHAJECKI, Z, ZHONG, C, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, ZOULKARNEEVA, Y, 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, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, 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, EVDOKIMOV, O, FACHINI, P, FATEMI, R, FEDORISIN, J, FERSCH, RG, 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, and GREBENYUK, O
Subjects: D+Au Collisions, Large Transverse-Momentum, High Energy Physics::Phenomenology, Nuclear Theory, Jets, Quark, P+P, High Energy Physics::Experiment, Hadrons, Nuclear Experiment
Abstract: We report new results on identified (anti) proton and charged pion spectra at large transverse momenta (3 < p(T) < 10 GeV/c) from Cu + Cu collisions at root s(NN) = 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-p(T) and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au + Au data, and allow for a detailed exploration of the onset of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
Published: 2010

9. Longitudinal scaling property of the charge balance function in Au plus Au collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BIRITZ, B, BLAND, LC, BONNER, BE, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRIDGEMAN, A, BRUNA, E, BUELTMANN, S, BUNZAROV, I, 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, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, 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, EVDOKIMOV, O, FACHINI, P, FATEMI, R, FEDORISIN, J, FERSCH, RG, 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, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, B, 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, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KOPYTINE, M, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, 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, L, LI, N, LI, W, LI, X, LI, Y, LI, ZM, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, LS, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUO, X, 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, MITROVSKI, MK, MOHANTY, B, MONDAL, MM, MOROZOV, 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, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, 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, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, YF, XIE, W, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, J, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, J, ZHONG, C, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, and ZOULKARNEEVA, Y
Subjects: Charge Balance Function, Boost-Invariance, Pairs, Nucleus-Nucleus Collisions, Longitudinal Scaling, E&E Annihilation, Jets, Events, Heavy-Ion Collisions, Particle, Transverse-Momentum
Abstract: We present measurements of the charge balance function, from the charged particles, for diverse pseudorapidity and transverse momentum ranges in Au + Au collisions at root S(NN) = 200 GeV using the STAR detector at RHIC. We observe that the balance function is boost-invariant within the pseudorapidity coverage vertical bar-1.3, 1.3 vertical bar. The balance function properly scaled by the width of the observed pseudorapidity window does not depend on the position or size of the pseudorapidity window. This scaling property also holds for particles in different transverse momentum ranges. In addition, we find that the width of the balance function decreases monotonically with increasing transverse momentum for all centrality classes. .
Published: 2010

10. Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, BEAVIS, DR, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, BELLWIED, R, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, BENEDOSSO, F, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, BETANCOURT, MJ, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, BETTS, RR, KEANE, D, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, BHASIN, A, KOLLEGGER, T, KONZER, J, KOPYTINE, M, KORALT, I, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, BHATI, AK, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, BICHSEL, H, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, Z, BIELCIK, J, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, BIELCIKOVA, J, LU, Y, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, BIRITZ, B, MASUI, H, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, BLAND, LC, MITROVSKI, MK, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, BONNER, BE, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, BOUCHET, J, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, BRAIDOT, E, PLANINIC, M, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, BRANDIN, AV, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, REHBERG, JM, RITTER, HG, BRIDGEMAN, A, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKAI, S, SAKREJDA, I, BRUNA, E, SAKUMA, T, SALUR, S, SANDWEISS, J, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, BUELTMANN, S, SELYUZHENKOV, I, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, BUNZAROV, I, SMIRNOV, N, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, BURTON, TP, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, CAI, XZ, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, CAINES, H, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, SANCHEZ, MCD, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, CATU, O, VOLOSHIN, SA, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, X, WANG, XL, CEBRA, D, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, Y, CENDEJAS, R, XIE, W, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, CERVANTES, MC, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, CHAJECKI, Z, ZHAO, J, ZHONG, C, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, ZOULKARNEEVA, Y, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, P, CHUNG, SU, CLARKE, RF, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, 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, EVDOKIMOV, O, FACHINI, P, FATEMI, R, FEDORISIN, J, FERSCH, RG, 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, and GORDON, A
Subjects: Quarkonia, Helicity-Coupling Amplitudes, Physics, Time Projection Chamber, Mass, Photon, Gamma-Gamma
Abstract: We present a measurement of pi(+)pi(-)pi(+)pi(-) photonuclear production in ultraperipheral Au-Au collisions at root s(NN) = 200 GeV from the STAR experiment. The pi(+)pi(-)pi(+)pi(-) final states are observed at low transverse momentum and are accompanied by mutual nuclear excitation of the beam particles. The strong enhancement of the production cross section at low transverse momentum is consistent with coherent photoproduction. The pi(+)pi(-)pi(+)pi(-) invariant mass spectrum of the coherent events exhibits a broad peak around 1540 +/- 40 MeV/c(2) with a width of 570 +/- 60 MeV/c(2), in agreement with the photoproduction data for the rho(0)(1700). We do not observe a corresponding peak in the pi(+)pi(-) final state and measure an upper limit for the ratio of the branching fractions of the rho(0)(1700) to pi(+)pi(-) and pi(+)pi(-)pi(+)pi(-) of 2.5% at 90% confidence level. The ratio of rho(0)(1700) and rho(0)(770) coherent production cross sections is measured to be 13.4 +/- 0.8(stat.) +/- 4.4(syst.)%.
Published: 2010
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11. System size dependence of associated yields in hadron-triggered jets STAR Collaboration

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, 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, 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, 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, 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, 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, I, 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, 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, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, 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, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KORSCH, W, 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, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, N, LI, C, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, MA, GL, MA, YG, MAHAPATRAM, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, 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, PLANINIC, M, PLUTA, J, 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, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, ER, 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, AAR, 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, 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, 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, ZOULKARNEEV, R, ZOULKARNEEVA, Y, and ZUO, JX
Subjects: Suppression, Parton Energy Loss, Relativistic Heavy-Ion Collisions, Jet Quenching, Di-Hadron Fragmentation Function, Radiative Energy-Loss, Collisions
Abstract: We present results on the system size dependence of high transverse momentum di-hadron correlations at root s(NN) = 200 GeV as measured by STAR at RHIC. Measurements in d + Au, Cu + Cu and Au + Au collisions reveal similar jet-like near-side correlation yields (correlations at small angular separation Delta phi similar to 0, Delta eta similar to 0) for all systems and centralities. Previous measurements have shown Chat the away-side (Delta phi similar to pi) yield is suppressed in heavy-ion collisions. We present measurements of the away-side Suppression as a function of transverse momentum and centrality in Cu + Cu and Au + Au collisions. The suppression is found to be similar in Cu + Cu and An + An collisions at a similar number of participants. The results are compared to theoretical calculations based on the patron quenching model and the modified fragmentation model. The observed differences between data and theory indicate that the correlated yields presented here will further constrain dynamic energy loss models and provide information about the dynamic density profile in heavy-ion collisions. (C) 2009
Published: 2010
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12. Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions

Author: 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, and ZUO, JX
Subjects: Nucleus Collisions, Particle Production, Canonical Suppression, Proton-Proton Collisions, Resonances, Strangeness Enhancement, Quark-Gluon Plasma, Heavy-Ion Collisions, Conservation, Rule, Collaboration, Pp Collisions, Model
Abstract: 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
Published: 2009

13. Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at s=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUMGART, S, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HAN, LX, BEAVIS, DR, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, BELLWIED, R, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, BENEDOSSO, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, KEANE, D, BETANCOURT, MJ, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, BETTS, RR, KONZER, J, KOPYTINE, M, KORALT, I, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, BHASIN, A, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, BHATI, AK, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, Z, LIN, G, BICHSEL, H, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, BIELCIK, J, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, BIELCIKOVA, J, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITROVSKI, MK, BIRITZ, B, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, BLAND, LC, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, BONNER, BE, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, BOUCHET, J, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, BRAIDOT, E, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, REHBERG, JM, RITTER, HG, ROBERTS, JB, BRANDIN, AV, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, BRIDGEMAN, A, SALUR, S, SANDWEISS, J, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, BRUNA, E, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, BUELTMANN, S, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, BUNZAROV, I, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, BURTON, TP, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, CAI, XZ, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, CAINES, H, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, SANCHEZ, MCD, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, CATU, O, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, Y, XIE, W, CEBRA, D, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, CENDEJAS, R, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, J, CERVANTES, MC, ZHONG, C, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, ZOULKARNEEVA, Y, 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, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, 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, FERSCH, RG, 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, and GREBENYUK, O
Subjects: Photoproduction, Momentum, Parton Distributions, Jet, Hadrons, Nucleon
Abstract: We report a measurement of the longitudinal double-spin asymmetry A(LL) and the differential cross section for inclusive pi(0) production at midrapidity in polarized proton collisions at s=200 GeV. The cross section was measured over a transverse momentum range of 1 < p(T)< 17 GeV/c and found to be in good agreement with a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry was measured in the range of 3.7 < p(T)< 11 GeV/c and excludes a maximal positive gluon polarization in the proton. The mean transverse momentum fraction of pi(0)'s in their parent jets was found to be around 0.7 for electromagnetically triggered events.
Published: 2009

14. Neutral pion production in Au plus Au collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, GURYN, W, BAUMGART, S, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, BEAVIS, DR, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, BELLWIED, R, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, BENEDOSSO, F, KANG, K, KAPITAN, J, KAUDER, K, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, BETANCOURT, MJ, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KONZER, J, KOPYTINE, M, KORALT, I, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, BETTS, RR, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, BHASIN, A, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, N, LI, Y, BHATI, AK, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, BICHSEL, H, LOVE, WA, LU, Y, LUDLAM, T, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, BIELCIK, J, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, BIELCIKOVA, J, MIODUSZEWSKI, S, MISCHKE, A, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, BIRITZ, B, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, BLAND, LC, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, BNZAROV, I, PLANINIC, M, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, BOMBARA, M, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RIDIGER, A, RITTER, HG, ROBERTS, JB, BONNER, BE, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, BOUCHET, J, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, BRAIDOT, E, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, BRANDIN, AV, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, BRUNA, E, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, BUELTMANN, S, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, BURTON, TP, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, BYSTERSKY, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, CAI, XZ, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, G, CAINES, H, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, SANCHEZ, MCB, XU, Y, XU, Z, YANG, Y, YEPES, P, YIP, K, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, CATU, O, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZHU, X, ZOULKARNEEV, R, CEBRA, D, ZOULKARNEEVA, Y, ZUO, JX, 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, 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, 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, GAILLARD, L, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, GEURTS, F, GHAZIKHANIAN, V, and GHOSH, P
Subjects: D+Au Collisions, Suppression, Nucleus-Nucleus Collisions, Energy-Loss, P+P, Transverse-Momentum Distributions, Collaboration
Abstract: The results of midrapidity (0 < y < 0.8) neutral pion spectra over an extended transverse momentum range (1 < p(T) < 12 GeV/c) in root s(NN) = 200 GeV Au + Au collisions, measured by the STAR experiment, are presented. The neutral pions are reconstructed from photons measured either by the STAR Barrel Electro-Magnetic Calorimeter or by the Time Projection Chamber via tracking of conversion electron-positron pairs. Our measurements are compared to previously published pi(+/-) and pi(0) results. The nuclear modification factors R(CP) and R(AA) of pi(0) are also presented as a function of p(T). In the most central Au + Au collisions, the binary collision scaled pi(0) yield at high p(T) is suppressed by a factor of about 5 compared to the expectation from the yield of p + p collisions. Such a large suppression is in agreement with previous observations for light quark mesons and is consistent with the scenario that partons suffer considerable energy loss in the dense medium formed in central nucleus-nucleus collisions at the Relativistic Heavy Ion Collider.
Published: 2009

15. J/psi production at high transverse momenta in p plus p and Cu plus Cu collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, BEAVIS, DR, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, BELLWIED, R, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, BENEDOSSO, F, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, BETANCOURT, MJ, KAJIMOTO, K, KANG, K, KAPITAN, J, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, BETTS, RR, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, BHASIN, A, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, BHATI, AK, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, N, LI, Y, LIN, G, LINDENBAUM, SJ, BICHSEL, H, LISA, MA, LIU, F, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, BIELCIK, J, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, BIELCIKOVA, J, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MOHANTY, B, MOROZOV, DA, BIRITZ, B, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, BLAND, LC, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, BOMBARA, M, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, BONNER, BE, POSKANZER, AM, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, BOTJE, M, REDWINE, R, REED, R, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, BOUCHET, J, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, BRAIDOT, E, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, BRANDIN, AV, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, BRUNA, E, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, BUELTMANN, S, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, BURTON, TP, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, BYSTERSKY, M, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, CAI, XZ, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WALKER, M, CAINES, H, WANG, F, WANG, G, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, SANCHEZ, MCD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, XU, Y, XU, Z, CATU, O, YANG, Y, YEPES, P, YIP, K, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, CEBRA, D, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUO, JX, 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, 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, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, 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, EJ, GEROMITSOS, A, GEURTS, F, and GHAZIKHANIAN, V
Subjects: Nucleus Collisions, Intersecting Storage-Rings, P(P)Over-Bar Collisions, D+Au Collisions, Suppression, Au Collisions, Quark-Gluon Plasma, Heavy-Ion Collisions, J-Psi, Root S=1.8 Tev
Abstract: The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of J/psi e(+) e(-) at midrapidity and high transverse momentum (pT > 5 GeV/c) in p + p and central Cu + Cu collisions at root s(NN) = 200 GeV. The inclusive J/psi production cross section for Cu + Cu collisions is found to be consistent at high p(T) with the binary collision-scaled cross section for p + p collisions. At a confidence level of 97%, this is in contrast to a suppression of J/psi production observed at lower p(T). Azimuthal correlations of J/psi with charged hadrons in p + p collisions provide an estimate of the contribution of B-hadron decays to J/psi production of 13% +/- 5%.
Published: 2009

16. Hadronic resonance production in d+Au collisions at root S(NN) = 200 GeV measured at the BNL Relativistic Heavy Ion Collider

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, GARCIA-SOLIS, ES, 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, HEPPLEMANN, S, BEAVIS, DR, HIPPOLYTE, B, HIRSCH, A, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, IGO, G, IORDANOVA, A, BELLWIED, R, JACOBS, P, JACOBS, WW, JAKL, P, JIN, F, JONES, PG, JOSEPH, J, 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, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, BHARDWAJ, S, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEVINE, MJ, BHASIN, A, LI, C, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, BHATI, AK, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, YG, MAHAPATRA, DP, BICHSEL, H, MAJKA, R, MALL, MI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, BIELCIK, J, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, BIELCIKOVA, J, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, BIRITZ, B, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, BLAND, LC, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, BOMBARA, M, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REED, R, 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, BRUNA, DETOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, BUELTMANN, S, TLUSTY, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, BURTON, TP, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, BYSTERSKY, M, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, Q, CAI, XZ, WANG, X, WANG, XL, WANG, Y, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, CAINES, H, XU, N, XU, QH, XU, Y, XU, Z, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, SANCHEZ, MCD, ZHANG, H, ZHANG, S, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, CALLNER, J, ZUO, JX, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPDHYAY, 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 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, GANGAHARAN, DR, and GANTI, MS
Subjects: Gluon Production, Particle-Production, Large Transverse-Momentum, Au+Au Collisions, Time Projection Chamber, Inclusive Production, Meson Production, Freeze-Out, Colored Glass, Energy Nuclear Collisions
Abstract: We present the first measurements of the rho(770)(0),K(*)(892),Delta(1232)(++),Sigma(1385), and Lambda(1520) resonances in d+Au collisions at s(NN)=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum p(T). We observe that the resonance spectra follow a generalized scaling law with the transverse mass m(T). The < p(T)> of resonances in minimum bias collisions are compared with the < p(T)> of pi,K, and p. The rho(0)/pi(-),K(*)/K(-),Delta(++)/p,Sigma(1385)/Lambda, and Lambda(1520)/Lambda ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (R(dAu)) of the rho(0),K(*), and Sigma(*) scale with the number of binary collisions (N(bin)) for p(T)> 1.2 GeV/c.
Published: 2008

17. Energy dependence of pi(+/-), p and (p)over-bar transverse momentum spectra for Au+Au collisions at root SNN=62.4 and 200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUMGART, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BENEDOSSO, F, BETTS, RR, BHARADWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BILLMEIER, A, BLAND, LC, BLYTH, SL, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BURTON, TP, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCD, CALLNER, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, HA, CHRISTIE, W, CHUNG, SU, 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, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FORNAZIER, KSF, FU, J, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YG, GOS, H, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, N, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, D, HOLLIS, R, HORNER, MJ, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JIA, F, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KURNADI, P, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MIRONOV, C, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, RAZIN, SV, REINNARTH, J, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, AK, JT, TANG, AH, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, XL, WANG, Y, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, J, XU, N, XU, QH, XU, Z, YEPES, P, YOO, IK, YUE, Q, YUREVICH, VI, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: D+Au Collisions, Particle Production, Jet Quenching, Nucleus-Nucleus Collisions, Star Experiment, Particle Identification, Hadron-Production, Collaboration, Recombination, Jet, Fragmentation, Quark-Gluon Plasma, Particle Ratios, Proton, Resistive Plate Chambers, Nuclear Modification Factor
Abstract: We study the energy dependense of the transverse momentum (PT) spectra for charged pions, protons and anti-protons for An + An collisions at root(NN)-N-s = 62.4 and 200 GeV. Data are presented at mid-rapidity (broken vertical bar y broken vertical bar < 0.5) for 0.2 < PT < 12 GeV/c. In the intermediate PT region (2 < PT < 6 GeV/c), the nuclear modification factor is higher at 62.4 GeV than at 200 GeV, while at higher PT (PT > 7 GeV/c) the modification is similar for both energies. The p/pi(+) and (p) over bar/pi(-) ratios for central collisions at root(NN)-N-s = 62.4 GeV peak at PT similar or equal to 2 GeV/c. In the PT range where recombination is expected to dominate, the p/pi(+) ratios at 62.4 GeV are larger than at 200 GeV, while the (p) over bar/pi(-) ratios are smaller. For PT > 2 GeV/c, the (p) over bar/pi(-) ratios at the two beam energies are independent of P-T and centrality indicating that the dependence of the (p) over bar/pi(-) ratio on P-T does not change between 62.4 and 200 GeV. These findings challenge various models incorporating jet quenching and/or constituent quark coalescence. (C) 2007
Published: 2007

18. Strange baryon resonance production in root s(NN)=200 GeV p+p and Au+Au collisions

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ANDERSON, M, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BENEDOSSO, F, BHARDWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BLYTH, SL, BONNER, BE, BOTJE, M, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BURTON, TP, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCDLB, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FILIMONOV, K, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GAUDICHET, L, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GORBUNOV, YG, GOS, H, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, N, GUTIERREZ, TD, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HORNER, MJ, HUANG, HZ, HUANG, SL, HUGHES, EW, HUMANIC, TJ, IGO, G, JACOBS, P, JACOBS, WW, JAKL, P, JIA, F, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LIU, Z, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAY, RL, RAZIN, SV, REINNARTH, J, RELYEA, D, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUGARBAKER, E, SUMBERA, M, SUN, Z, SURROW, B, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, XL, WANG, Y, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, QH, XU, Z, YEPES, P, YOO, K, YUREVICH, I, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: Heavy-Ion Collisions, Freeze-Out
Abstract: We report the measurements of Sigma(1385) and Lambda(1520) production in p+p and Au+Au collisions at root s(NN)=200 GeV from the STAR Collaboration. The yields and the p(T) spectra are presented and discussed in terms of chemical and thermal freeze-out conditions and compared to model predictions. Thermal and microscopic models do not adequately describe the yields of all the resonances produced in central Au+Au collisions. Our results indicate that there may be a time span between chemical and thermal freeze-out during which elastic hadronic interactions occur.
Published: 2006

19. Hadronization geometry from net-charge angular correlations on momentum subspace (eta, phi) in Au-Au collisions at (root SNN)=130 GeV

Author: ADAMS, J, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BADYAL, SK, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BERGER, J, BEZVERKHNY, BI, BHARADWAJ, S, BHASIN, A, BHATI, AK, BHATIA, VS, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BILLMEIER, A, BLAND, LC, BLYTH, CO, BLYTH, SL, BONNER, BE, BOTJE, M, BOUCHAM, A, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCD, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, Y, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, HA, CHRISTIE, W, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUBEY, AK, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FAIVRE, J, FATEMI, R, FEDORISIN, J, FILIMONOV, K, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FORNAZIER, KSF, FU, J, GAGLIARDI, CA, GAILLARD, L, GANS, J, GANTI, MS, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GOS, H, GRACHOV, O, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUO, Y, GUPTA, A, GUPTA, N, GUTIERREZ, TD, HALLMAN, TJ, HAMED, A, HARDTKE, D, HARRIS, JW, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMANN, GW, HORNER, MJ, HUANG, HZ, HUANG, SL, HUGHES, EW, HUMANIC, TJ, IGO, G, ISHIHARA, A, JACOBS, P, JACOBS, WW, JEDYNAK, M, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPLAN, M, KEANE, D, KECHECHYAN, A, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLAY, J, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUTUEV, RK, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LIU, QJ, LIU, Z, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAJAN, S, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MARX, JN, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MEISSNER, F, MELNICK, Y, MESCHANIN, A, MILLER, ML, MINAEV, NG, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NAYAK, SK, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PETROV, VA, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAVEL, O, RAY, RL, RAZIN, SV, REICHHOLD, D, REID, JG, REINNARTH, J, RENAULT, G, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHAO, W, SHARMA, M, SHEN, WQ, SHESTERMANOV, KE, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUGARBAKER, E, SUMBERA, M, SURROW, B, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, VANDER MOLEN, AM, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, XL, WANG, Y, WANG, ZM, WARD, H, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, Z, XU, ZZ, YAMAMOTO, E, YEPES, P, YOO, IK, YUREVICH, VI, ZBOROVSKY, I, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHONG, C, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: Net-Charge Correlations, Heavy Ion Collisions, Net-Charge Fluctuations, By-Event Fluctuations, Dynamics, Hadronization
Abstract: We present the first measurements of charge-dependent correlations on angular difference variables eta(1) - eta(2) (pseudorapidity) and phi(1) - phi(2) (azimuth) for primary charged hadrons with transverse momentum 0.15
Published: 2006

20. Transverse-momentum p(t) correlations on (eta, phi) from mean-p(t) fluctuations in Au-Au collisions at root(s)(NN)=200 GeV

Author: ADAMS, J, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BADYAL, SK, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BERGER, J, BEZVERKHNY, BI, BHARADWAJ, S, BHASIN, A, BHATI, AK, BHATIA, VS, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BILLMEIER, A, BLAND, LC, BLYTH, CO, BLYTH, SL, BONNER, BE, BOTJE, M, BOUCHAM, A, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCD, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, Y, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, HA, CHRISTIE, W, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUBEY, AK, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FAIVRE, J, FATEMI, R, FEDORISIN, J, FILIMONOV, K, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FORNAZIER, KSF, FU, J, GAGLIARDI, CA, GAILLARD, L, GANS, J, GANTI, MS, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GOS, H, GRACHOV, O, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUO, Y, GUPTA, A, GUPTA, N, GUTIERREZ, TD, HALLMAN, TJ, HAMED, A, HARDTKE, D, HARRIS, JW, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMANN, GW, HORNER, MJ, HUANG, HZ, HUANG, SL, HUGHES, EW, HUMANIC, TJ, IGO, G, ISHIHARA, A, JACOBS, P, JACOBS, WW, JEDYNAK, M, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPLAN, M, KEANE, K, KECHECHYAN, A, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLAY, J, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUTUEV, RK, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LIU, QJ, LIU, Z, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAJAN, S, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MARX, JN, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MEISSNER, F, MELNICK, Y, MESCHANIN, A, MILLER, ML, MINAEV, NG, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NAYAK, SK, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PETROV, VA, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAVEL, O, RAY, RL, RAZIN, SV, REICHHOLD, D, REID, JG, REINNARTH, J, RENAULT, G, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHAO, W, SHARMA, M, SHEN, WQ, SHESTERMANOV, KE, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUGARBAKER, E, SUMBERA, M, SURROW, B, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, VANDER MOLEN, AM, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, XL, WANG, Y, MWANG, Z, WARD, H, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, Z, XU, ZZ, YAMAMOTO, E, YEPES, P, YOO, IK, YUREVICH, VI, ZBOROVSKY, I, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHONG, C, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: Star, Autocorrelations, Scale Dependence, Equilibration
Abstract: We present first measurements of the pseudorapidity and azimuth (eta, phi) bin-size dependence of event-wise mean transverse-momentum < pt > fluctuations for Au-Au collisions at root sNN = 200 GeV. We invert that dependence to obtain p(t) autocorrelations on differences (eta(Delta), phi(Delta)) interpreted to represent velocity/temperature distributions on (eta, phi). The general form of the autocorrelations suggests that the basic correlation mechanism is parton fragmentation. The autocorrelations vary rapidly with collision centrality, which suggests that fragmentation is strongly modified by a dissipative medium in the more central Au-Au collisions relative to peripheral or p-p collisions.
Published: 2006

21. Identified baryon and meson distributions at large transverse momenta from Au plus Au collisions at root(S)(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ANDERSON, M, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BENEDOSSO, F, BHARDWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BLYTH, SL, BONNER, BE, BOTJE, M, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BURTON, TP, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCLB, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GORBUNOV, YG, GOS, H, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, N, GUTIERREZ, TD, HAAG, B, HAMED, A, HARRIS, JW, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HOFFMANN, GW, HORNER, MJ, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, IGO, G, JACOBS, P, JACOBS, WW, JAKL, P, JIA, F, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LIU, Z, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, NS, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAY, RL, REINNARTH, J, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKUMA, T, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUBBA, NL, SUGARBAKER, E, SUMBERA, M, SUN, Z, SURROW, B, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, XL, WANG, Y, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, QH, XU, Z, YEPES, P, YOO, IK, YUREVICH, VI, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZOULKAMEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: D+Au Collisions, Quark, Fragmentation Functions, P+P, Hadron Spectra
Abstract: Transverse momentum spectra of pi(+/-), p, and (p) over bar p up to 12 GeV/c at midrapidity in centrality selected Au + Au collisions at root s(NN) = 200 GeV are presented. In central Au + Au collisions, both pi(+/-) and p((p) over bar) show significant suppression with respect to binary scaling at p(T) greater than or similar to 4 GeV/c. Protons and antiprotons are less suppressed than pi(+/-), in the range 1.5 less than or similar to p(T) less than or similar to 6 GeV/c. The pi(-)/pi(+) and (p) over bar /p ratios show at most a weak pT dependence and no significant centrality dependence. The p/pi ratios in central Au + Au collisions approach the values in p + p and d + Au collisions at p(T) greater than or similar to 5 GeV/c. The results at high p(T) indicate that the partonic sources of pi(+/-), p, and (p) over bar have similar energy loss when traversing the nuclear medium.
Published: 2006
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22. System-size dependence of strangeness production in nucleus-nucleus collisions at root S-NN=17.3 GeV

Author: Alt, C Anticic, T Baatar, B Barna, D Bartke, J and Betev, L Bialkowska, H Billmeier, A Blume, C Boimska, B and Botje, M Bracinik, J Bramm, R Brun, R Buncic, P and Cerny, V Christakoglou, P Chvala, O Cramer, JG Csato, P and Darmenov, N Dimitrov, A Dinkelaker, P Eckardt, V and Farantatos, G Flierl, D Fodor, Z Foka, P Freund, P and Friese, V Gal, J Gazdzicki, M Georgopoulos, G Gladysz, E and Grebieszkow, K Hegyi, S Hohne, C Kadija, K Karev, A and Kliemant, M Kniege, S Kolesnikov, VI Kollegger, T and Kornas, E Korus, R Kowalski, M Kraus, I Kreps, M van Leeuwen, M Levai, P Litov, L Lungwitz, B Makariev, M and Malakhov, AI Markert, C Mateev, M Mayes, BW Melkumov, GL and Meurer, C Mischke, A Mitrovski, M Molnar, J and Mrowczynski, S Palla, G Panagiotou, AD Panayotov, D and Petridis, A Pikna, M Pinsky, L Puhlhofer, F Reid, JG and Renfordt, R Richard, A Roland, C Roland, G Rybczynski, M and Rybicki, A Sandoval, A Sann, H Schmitz, N Seyboth, P and Sikler, F Sitar, B Skrzypczak, E Stefanek, G Stock, R Strobele, H Susa, T Szentpetery, I Sziklai, J and Trainor, TA Trubnikov, V Varga, D Vassiliou, M Veres, GI and Vesztergombi, G Vranic, D Wetzler, A Wlodarczyk, Z and Yoo, IK Zaranek, J Zimanyi, J
Subjects: Nuclear Theory, Nuclear Experiment
Abstract: Emission of pi(+/-), K+/-, phi, and Lambda was measured in near-central C + C and Si + Si collisions at 158 AGeV beam energy. Together with earlier data for p + p, S + S, and Pb + Pb, the system-size dependence of relative strangeness production in nucleus-nucleus collisions is obtained. Its fast rise and the saturation observed at about 60 participating nucleons can be understood as the onset of the formation of coherent systems of increasing size.
Published: 2005

23. phi meson production in Au + Au and p + p collisions at root S-NN=200 GeV

Author: ADAMS, J, ADLER, C, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BADYAL, SK, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLWIED, R, BERGER, J, BEZVERKHNY, BI, BHARDWAJ, S, BHATI, AK, BICHSEL, H, BILLMEIER, A, BLAND, LC, BLYTH, CO, BONNER, BE, BOTJE, M, BOUCHAM, A, BRANDIN, A, BRAVAR, A, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCD, CARROLL, J, CASTILLO, J, CEBRA, D, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, Y, CHERNENKO, SP, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, COFFIN, JP, CORMIER, TM, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUBEY, AK, DUNIN, VB, DUNLOP, JC, MAJUMDAR, MRD, ECKARDT, V, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FAINE, V, FAIVRE, J, FATEMI, R, FILIMONOV, K, FILIP, P, FINCH, E, FISYAK, Y, FLIERL, D, FOLEY, KJ, FU, J, GAGLIARDI, CA, GAGUNASHVILI, N, GANS, J, GANTI, MS, GAUDICHET, L, GERMAIN, M, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GRACHOV, O, GREBENYUK, O, GRONSTAL, S, GROSNICK, D, GUEDON, M, GUERTIN, SM, GUPTA, A, GUTIERREZ, TD, HALLMAN, TJ, HAMED, A, HARDTKE, D, HARRIS, JW, HEINZ, M, HENRY, TW, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMANN, GW, HORSLEY, M, HUANG, HZ, HUANG, SL, HUGHES, E, HUMANIC, TJ, IGO, G, ISHIHARA, A, JACOBS, P, JACOBS, WW, JANIK, M, JIANG, H, JOHNSON, I, JONES, PG, JUDD, EG, KABANA, S, KAPLAN, M, KEANE, D, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KLAY, J, KLEIN, SR, KLYACHKO, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOVALENKO, AD, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUNDE, GJ, KUNZ, CL, KUTUEV, RK, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LASIUK, B, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEVINE, MJ, LI, C, LI, Q, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, L, LIU, Z, LIU, QJ, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LUDLAM, T, LYNN, D, MA, J, MA, YG, MAGESTRO, D, MAHAJAN, S, MANGOTRA, LK, MAHAPATRA, DP, MAJKA, R, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MARX, J, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MEISSNER, E, MELNICK, Y, MESCHANIN, A, MILLER, ML, MILOSEVICH, Z, MINAEV, NG, MIRONOV, C, MISCHKE, A, MISHRA, D, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MORA-CORRAL, MJ, MOROZOV, DA, MOROZOV, V, DE MOURA, MM, MUNHOZ, MG, NANDI, BK, NAYAK, SK, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NORMAN, B, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, A, OLSON, D, PAIC, G, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PETROV, VA, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAI, G, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAVEL, O, RAY, RL, RAZIN, SV, REICHHOLD, D, REID, JG, RENAULT, G, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKI, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, LJ, SAHOO, R, SAKREJDA, I, SALUR, S, SANDWEISS, J, SAVIN, I, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHROEDER, LS, SCHWEDA, K, SEGER, J, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHAO, W, SHARMA, M, SHESTERMANOV, KE, SHIMANSKII, SS, SINGARAJU, RN, SIMON, F, SKORO, G, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, R, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, STRUCK, C, SUAIDE, AAP, SUGARBAKER, E, SUIRE, C, SUMBERA, M, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, SZARWAS, P, TAI, A, TAKAHASHI, J, TANG, AH, THEIN, D, THOMAS, JH, TIMOSHENKO, S, TOKAREV, M, TONJES, MB, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, O, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VANDERMOLEN, AM, VARMA, R, VASILEVSKI, I, VASILIEV, AN, VIGDOR, SE, VIYOGI, YP, VOLOSHIN, SA, VZNUZDAEV, M, WAGGONER, W, WANG, F, WANG, G, WANG, XL, WANG, Y, WANG, ZM, WARD, H, WATSON, JW, WEBB, JC, WELLS, R, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WILLSON, R, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, Z, XU, ZZ, YAMAMOTO, E, YEPES, P, YUREVICH, VI, YUTING, B, ZANEVSKI, YV, ZHANG, H, ZHANG, WM, ZHANG, ZP, ZHAOMIN, ZP, ZOLNIERCZUK, PA, ZOULKARNEEV, R, ZOULKARNEEVA, J, and ZUBAREV, AN
Subjects: Kaon Production, Au+Au Collisions, Phenomenology, Extraction, Model
Abstract: We report the STAR measurement of phi meson production in Au + Au and p + p collisions at root s(NN) = 200 GeV. Using the event mixing technique, the phi spectra and yields are obtained at mid-rapidity for five centrality bins in Au + Au collisions and for non-singly-diffractive p + p collisions. It is found that the phi transverse momentum distributions from Au + An collisions are better fitted with a single-exponential while the p + p spectrum is better described by a double-exponential distribution. The measured nuclear modification factors indicate that phi production in central An + An collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions (< N-bin>). The systematics of < p(t)> versus centrality and the constant phi/K- ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for phi production. (c) 2005
Published: 2005

24. Pion, kaon, proton and anti-proton transverse momentum distributions from p+p and d+Au collisions at root(NN)-N-S=200GeV

Author: ADAMS, J, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BADYAL, SK, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, GUERTIN, SM, GUO, Y, GUPTA, A, GUTIERREZ, TD, HALLMAN, TJ, HAMED, A, HARDTKE, D, HARRIS, JW, HEINZ, M, HENRY, TW, BARNBY, LS, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMANN, GW, HUANG, HZ, HUANG, SL, HUGHES, EW, HUMANIC, TJ, IGO, G, BAUDOT, J, ISHIHARA, A, JACOBS, P, JACOBS, WW, JANIK, M, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPLAN, M, BEKELE, S, KEANE, D, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLAY, J, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, BELAGA, VV, KOTCHENDA, Y, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUTUEV, RK, KUZNETSOV, AA, BELLWIED, R, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAUE, F, LEBEDEV, A, LEDNICKY, R, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, BERGER, J, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, L, LIU, QJ, LIU, Z, LJUBICIC, T, LLOPE, WJ, BEZVERKHNY, BI, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, BHARADWAJ, S, MAGESTRO, D, MAHAJAN, S, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MARX, JN, BHASIN, A, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MEISSNER, F, MELNICK, Y, MESCHANIN, A, MILLER, ML, MINAEV, NG, MIRONOV, C, BHATI, AK, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NAYAK, SK, BHATIA, VS, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, BICHSEL, H, OLSON, D, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, BIELCIK, J, PETROV, VA, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, BIELCIKOVA, J, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAVEL, O, RAY, RL, RAZIN, SV, BILLMEIER, A, REICHHOLD, D, REID, JG, RENAULT, G, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, BLAND, LC, ROY, C, RUAN, L, SAHOO, R, SAKREJDA, I, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SAZHIN, PS, SCHAMBACH, J, BLYTH, CO, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHAO, W, SHARMA, M, SHEN, WQ, BONNER, BE, SHESTERMANOV, KE, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SKORO, G, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, BOTJE, M, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, BOUCHAM, A, SUAIDE, AAP, SUGARBAKER, E, SUIRE, C, SUMBERA, M, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, SZARWAS, P, TAI, A, TAKAHASHI, J, BRANDIN, AV, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, BRAVAR, A, ULERY, J, ULLRICH, T, UNDERWOOD, DG, URKINBAEV, A, VAN BUREN, G, VAN LEEUWEN, M, VANDER MOLEN, AM, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, BYSTERSKY, M, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VZNUZDAEV, M, WAGGONER, WT, WANG, F, WANG, G, WANG, XL, CADMAN, R, WANG, Y, WANG, ZM, WARD, H, WATSON, JW, WEBB, JC, WELLS, R, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, CAI, XZ, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, Z, XU, ZZ, YAMAMOTO, E, YEPES, P, YUREVICH, VI, CAINES, H, ZANEVSKY, YV, ZHANG, H, ZHANG, WM, ZHANG, ZP, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, A, SANCHEZ, MCD, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, R, CHATTOPADHYAY, S, CHEN, HF, CHEN, Y, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, COFFIN, JP, CORMIER, TM, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DE MOURA, MM, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUBEY, AK, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FAIVRE, J, FATEMI, R, FEDORISIN, J, FILIMONOV, K, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FOMENKO, K, FU, J, GAGLIARDI, CA, GAILLARD, L, GANS, J, GANTI, MS, GAUDICHET, L, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GRACHOV, O, GREBENYUK, O, and GROSNICK, D
Subjects: Star, Plus Au, Hadron, Time Projection Chamber, Resistive Plate Chambers, Dependence, Qcd, Model
Abstract: Identified mid-rapidity particle spectra of pi(+/-), K+/-, and p((p) over bar) from 200 GeV p + p and d + Au collisions are reported. A time-of-flight detector based on multi-gap resistive plate chamber technology is used for particle identification. The particle-species dependence of the Cronin effect is observed to be significantly smaller than that at lower energies. The ratio of the nuclear modification factor (R-dAu) between protons (p + (p) over bar) and charged hadrons (h) in the transverse momentum range 1.2 < p(T) < 3.0 GeV/c is measured to be 1.19 +/- 0.05(stat) +/- 0.03(syst) in minimum-bias collisions and shows little centrality dependence. The yield ratio of (p + (p) over bar)/h in minimum-bias d + Au collisions is found to be a factor of 2 lower than that in Au + Au collisions, indicating that the Cronin effect alone is not enough to account for the relative baryon enhancement observed in heavy ion collisions at RHIC. (c) 2005
Published: 2005

25. Multiplicity and pseudorapidity distributions of photons in Au+Au collisions at root s(NN)=62.4 GeV

Author: ADAMS, J, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BADYAL, SK, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BEKELE, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BERGER, J, BEZVERKHNY, BI, BHARDWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BILLMEIER, A, BLAND, LC, BLYTH, CO, BLYTH, S, BONNER, BE, BOTJE, M, BOUCHAM, A, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCDL, CASTILLO, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, Y, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DE MOURA, MM, DEDOVICH, TG, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DOGRA, SM, DONG, WJ, DONG, X, DRAPER, JE, DU, F, DUBEY, AK, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FAIVRE, J, FATEMI, R, FEDORISIN, J, FILIMONOV, K, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FORNAZIER, KSF, FU, J, GAGLIARDI, CA, GAILLARD, L, GANS, J, GANTI, MS, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GONZALEZ, JE, GOS, H, GRACHOV, O, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUO, Y, GUPTA, A, GUTIERREZ, TD, HALLMAN, TJ, HAMED, A, HARDTKE, D, HARRIS, JW, HEINZ, M, HENRY, TW, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMANN, GW, HORNER, M, HUANG, HZ, HUANG, SL, HUGHES, EW, HUMANIC, TJ, IGO, G, ISHIHARA, A, JACOBS, P, JACOBS, WW, JEDYNAK, M, JIANG, H, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPLAN, M, KEANE, D, KECHECHYAN, A, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLAY, J, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOWALIK, KL, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KUTUEV, RK, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LIU, QJ, LIU, Z, LJUBICIC, T, LLOPE, WJ, LONG, H, LONGACRE, RS, LOPEZ-NORIEGA, M, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAJAN, S, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MARX, JN, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MEISSNER, F, MELNICK, Y, MESCHANIN, A, MILLER, ML, MINAEV, NG, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NAYAK, SK, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NIKITIN, VA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PETROV, VA, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAVEL, O, RAY, RL, RAZIN, SV, REICHHOLD, D, REID, JG, REINNARTH, J, RENAULT, G, RETIERE, F, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHAO, W, SHARMA, M, SHEN, WQ, SHESTERMANOV, KE, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUGARBAKER, E, SUIRE, C, SUMBERA, M, SURROW, B, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, BUREN, GV, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, XL, WANG, Y, WANG, ZM, WARD, H, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, XU, N, XU, Z, XU, ZZ, YAMAMOTO, E, YEPES, P, YUREVICH, VI, ZBOROVSKY, I, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZOULKARNEEV, R, ZOULKARNEEVA, Y, and ZUBAREV, AN
Subjects: Au Collisions, Detector, Nuclear Collisions, Cross-Sections, Model
Abstract: We present the first measurement of pseudorapidity distribution of photons in the region 2.3
Published: 2005

26. Omega(-) and (Omega)over-bar(+) production in central Pb+Pb collisions at 40 and 158A GeV

Author: Alt, C Anticic, T Baatar, B Barna, D Bartke, J and Betev, L Bialkowska, H Billmeier, A Blume, C Boimska, B and Botje, M Bracinik, J Bramm, R Brun, R Buncic, P and Cerny, V Christakoglou, P Chvala, O Cramer, JG Csato, P and Darmenov, N Dimitrov, A Dinkelaker, P Eckardt, V and Farantatos, G Flierl, D Fodor, Z Foka, P Freund, P and Friese, V Gal, J Gazdzicki, M Georgopoulos, G Gladysz, E and Grebieszkow, K Hegyi, S Hohne, C Kadija, K Karev, A and Kliemant, M Kniege, S Kolesnikov, VI Kollegger, T and Kornas, E Korus, R Kowalski, M Kraus, I Kreps, M van Leeuwen, M Levai, P Litov, L Lungwitz, B Makariev, M and Malakhov, AI Markert, C Mateev, M Mayes, BW Melkumov, GL and Meurer, C Mischke, A Mitrovski, M Molnar, J and Mrowczynski, S Palla, G Panagiotou, AD Panayotov, D and Petridis, A Pikna, M Pinsky, L Puhlhofer, F Reid, JG and Renfordt, R Richard, A Roland, C Roland, G Rybczynski, M and Rybicki, A Sandoval, A Sann, H Schmitz, N Seyboth, P and Sikler, F Sitar, B Skrzypczak, E Stefanek, G Stock, R Strobele, H Susa, T Szentpetery, I Sziklai, J and Trainor, TA Varga, D Vassiliou, M Veres, GI and Vesztergombi, G Vranic, D Wetzler, A Wlodarczyk, Z Yoo, IK Zaranek, J Zimanyi, J NA49 Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-)+(Omega) over bar (+) at 40A GeV and for Omega(-) and (Omega) over bar (+) separately at 158A GeV. The yields are strongly underpredicted by the string-hadronic UrQMD model but agree better with predictions from hadron gas models.
Published: 2005

27. Directed and elliptic flow of charged pions and protons in Pb+Pb collisions at 40 and 158A GeV

Author: Alt, C, Anticic, T, Baatar, B, Barna, D, Bartke, J, Behler, M, Betev, L, Bialkowska, H, Billmeier, A, Blume, C, Boimska, B, Borghini, Nicolas, Botje, M, Bracinik, J, Bramm, R, Brun, R, Buncic, P, Cerny, V, Chvala, O, Cooper, GE, Cramer, JG, Csato, P, Dinh, PM, Dinkelaker, P, Eckardt, V, Filip, P, Fodor, Z, Foka, P, Freund, P, Friese, V, Gal, J, Gazdzicki, M, Georgopoulos, G, Gladysz, E, Hegyi, S, Hohne, C, Jacobs, P, Kadija, K, Karev, A, Kniege, S, Kolesnikov, VI, Kollegger, T, Korus, R, Kowalski, M, Kraus, I, Kreps, M, van Leeuwen, M, Levai, P, Malakhov, AI, Markert, C, Mayes, BW, Melkumov, GL, Meurer, C, Mischke, A, Mitrovski, M, Molnar, J, Mrowczynski, S, Odyniec, G, Ollitrault, JY, Palla, G, Panagiotou, AD, Perl, K, Petridis, A, Pikna, M, Pinsky, L, Poskanzer, AM, Puhlhofer, F, Reid, JG, Renfordt, R, Retyk, W, Ritter, HG, Roland, C, Roland, G, Rybczynski, M, Rybicki, A, Sandoval, A, Sann, H, Schmitz, N, Seyboth, P, Sikler, F, Sitar, B, Skrzypczak, E, Snellings, RJ, Stefanek, G, Stock, R, Strobele, H, Susa, T, Szentpetery, I, Sziklai, J, Trainor, TA, Varga, D, Vassiliou, M, Veres, GI, Vesztergombi, G, Voloshin, SA, Vranic, D, Wetzler, A, Wlodarczyk, Z, Yoo, IK, Zaranek, J, and Zimanyi, J
Subjects: FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Directed and elliptic flow measurements for charged pions and protons are reported as a function of transverse momentum, rapidity, and centrality for 40 and 158A GeV Pb + Pb collisions as recorded by the NA49 detector. Both the standard method of correlating particles with an event plane, and the cumulant method of studying multiparticle correlations are used. In the standard method the directed flow is corrected for conservation of momentum. In the cumulant method elliptic flow is reconstructed from genuine 4, 6, and 8-particle correlations, showing the first unequivocal evidence for collective motion in A+A collisions at SPS energies., To be published in Phys. Rev. C, 37 pages, 29 figures, version accepted for publication, contains now a weblink to data shown in the figures: See http://na49info.cern.ch/na49/Archives/Data/FlowWebPage/
Published: 2003

28. Deuteron production in central Pb plus Pb collisions at 158A GeV

Author: Afanasiev, SV Anticic, T Bachler, J Barna, D Barnby, LS and Bartke, J Barton, RA Betev, L Bialkowska, H and Billmeier, A Blume, C Blyth, CO Boimska, B Bracinik, J and Brady, FP Brun, R Buncic, P Carr, L Cebra, D and Cooper, GE Cramer, JG Csato, P Eckardt, V Eckhardt, F and Ferenc, D Fischer, HG Fodor, Z Foka, P Freund, P and Friese, V Ftacnik, J Gal, J Ganz, R Gazdzicki, M and Gladysz, E Grebieszkow, J Harris, JW Hegyi, S Hlinka, V and Hohne, C Igo, G Ivanov, M Jacobs, P Janik, R and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C Mayes, BW Melkumov, GL Mischke, A Molnar, J Nelson, JM and Odyniec, G Oldenburg, MD Palla, G Panagiotou, AD and Petridis, A Pikna, M Pinsky, L Poskanzer, AM Prindle, DJ and Puhlhofer, F Reid, JG Renfordt, R Retyk, W Ritter, HG Rohrich, D Roland, C Roland, G Rybicki, A Sammer, T Sandoval, A Sann, H Semenov, AY Schafer, E and Schmitz, N Seyboth, P Sikler, F Sitar, B Skrzypczak, E and Snellings, R Squier, GTA Stock, R Strmen, P and Strobele, H Struck, C Susa, T Szarka, I Szentpetery, I and Sziklai, J Toy, M Trainor, TA Trentalange, S and Ullrich, T Varga, D Vassiliou, M Veres, GI Vesztergombi, G Voloshin, S Vranic, D Wang, F Weerasundara, DD and Wenig, S Whitten, C Xu, N Yates, TA Yoo, IK Zimanyi, J
Abstract: Experimental results on deuteron emission from central Pb + Pb collisions (E-beam = 158A GeV, fixed target), obtained by NA49 at the CERN SPS accelerator, are presented. The transverse mass in, distribution was measured near mid-rapidity (2.0 < y < 2.5) in the range of 0 < m(t) - m(0) < 0.9 GeV/c(2) (0 < p(t) < 2.0 GeV/c) for the 4% most central collisions. An exponential fit gives an inverse slope T-d = (450 +/- 30) MeV and a yield dN(d)/dy = 0.34 +/- 0.03. The coalescence factor B-2 (m(t) = m(0))=(3.5 +/- 1.0) . 10(-4) GeV2 and its m(t)-dependence are deter-mined and discussed in terms of a model that includes the collective expansion of the source created in a collision. The derived Gaussian size parameter R-G Of the emission volume is consistent with earlier HBT results on the source of pion emission. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

29. Production of phi-mesons in p + p, p + Pb and central Pb + Pb collisions at E-beam=158 A GeV

Author: Afanasiev, SV Anticic, T Bachler, J Barna, D Barnby, LS and Bartke, J Barton, RA Betev, L Bialkowska, H and Billmeier, A Blume, C Blyth, CO Boimska, B Bracinik, J and Brady, FP Brun, R Buncic, P Carr, L Cebra, D and Cooper, GE Cramer, JG Csato, P Eckardt, V Eckhardt, F and Ferenc, D Fischer, HG Fodor, Z Foka, P Freund, P and Friese, V Ftacnik, J Gal, J Ganz, R Gazdzicki, M and Gladysz, E Grebieszkow, J Harris, JW Hegyi, S Hlinka, V and Hohne, C Igo, G Ivanov, M Jacobs, P Janik, R and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C Mayes, BW Melkumov, GL Mischke, A Molnar, J Nelson, JM and Odyniec, G Oldenburg, MD Palla, G Panagiotou, AD and Petridis, A Pikna, M Pinsky, L Poskanzer, AM Prindle, DJ and Puhlhofer, F Reid, JG Renfordt, R Retyk, W Ritter, HG Rohrich, D Roland, C Roland, G Rybicki, A Sammer, T Sandoval, A Sann, H Semenov, AY Schafer, E and Schmitz, N Seyboth, P Sikler, F Sitar, B Skrzypczak, E and Snellings, R Squier, GTA Stock, R Strmen, P and Strobele, H Susa, T Szarka, I Szentpetery, I Sziklai, J and Toy, M Trainor, TA Trentalange, S Ullrich, T Varga, D Vassiliou, M Veres, GI Vesztergombi, G Voloshin, S and Vranic, D Wang, F Weerasundara, DD Wenig, S Whitten, C and Xu, N Yates, TA Yoo, IK Zimanyi, J NA49 Collaboration
Abstract: Yields and phase space distributions of phi -mesons emitted from p + p (minimum bias trigger), p + Pb (at various centralities) and central Pb + Pb collisions are reported (E-beam = 158 A GeV). The decay phi –> K+K- was used for identification. The phi/pi ratio is found to increase by a factor of 3.0 +/- 0.7 from inelastic p + p to central Pb + Pb. Significant enhancement in this ratio is also observed in subclasses of p + p events (characterized by high charged-particle multiplicity) as well as in the forward hemisphere of central p + Pb collisions. In Pb + Pb no shift or significant broadening of the phi -peak is seen. (C) 2000 Published by Elsevier Science B.V.
Published: 2000

30. Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon

Author: Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Billmeier, A Blyth, CO and Bock, R Boimska, B Bormann, C Brady, FP Brockmann, R and Brun, R Buncic, P Caines, HL Cebra, D Cooper, GE and Cramer, JG Csato, P Dunn, J Eckardt, V Eckhardt, F and Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P and Freund, P Friese, V Fuchs, M Gabler, F Gal, J Ganz, R Gazdzicki, M Geist, W Gladysz, E Grebieszkow, J and Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA and Huang, I Hummler, H Igo, G Irmscher, D Jacobs, P and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C and Melkumov, GL Mock, A Molnar, J Nelson, JM Oldenburg, M and Odyniec, G Palla, G Panagiotou, AD Petridis, A and Piper, A Porter, RJ Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F Reid, JG Renfordt, R Retyk, W and Ritter, HG Rohrich, D Roland, C Roland, G Rudolph, H and Rybicki, A Sandoval, A Sann, H Semenov, AY Schafer, E and Schmischke, D Schmitz, N Schonfelder, S Seyboth, P and Sikler, F Skrzypczak, E Squier, GTA Stock, R Strobele, H and Szentpetery, I Sziklai, J Toy, M Trainor, TA and Trentalange, S Ullrich, T Vassiliou, M Vesztergombi, G and Vranic, D Wang, F Weerasundara, DD Wenig, S Whitten, C and Wienold, T Wood, L Xu, N Yates, TA Zimanyi, J and Zhu, XZ Zybert, R NA49 Collaboration
Subjects: Nuclear Theory, Nuclear Physics - Experiment, Nuclear Experiment
Abstract: Net proton and negative hadron spectra for central Pb + Pb collisions at 158 GeV per nucleon at the CERN Super Proton Synchrotron were measured and compared to spectra from lighter systems. Net baryon distributions were derived from those of net protons. Stopping (rapidity shift with respect to the beam) and mean transverse momentum [p(T)] of net baryons increase with system size. The rapidity density of negative hadrons scales with the number of participant nucleons for nuclear collisions, whereas their [p(T)] is independent of system size. The [p(T)] dependence upon particle mass and system size is consistent with larger transverse flow velocity at midrapidity for Pb + Pb compared to S + S central collisions.
Published: 1999

31. Two-proton correlations from 158 A GeV Pb+Pb central collisions

Author: Appelshauser, H Bachler, J Bailey, SJ Barna, D Barnby, LS Bartke, J Barton, RA Betev, L Bialkowska, H and Billmeier, A Blyth, CO Bock, R Boimska, B Bormann, C and Brady, FP Brockmann, R Brun, R Buncic, P Caines, HL and Carr, LD Cebra, D Cooper, GE Cramer, JG Cristinziani, M and Csata, P Dunn, J Eckardt, V Eckhardt, F Ferguson, MI and Fischer, HG Flierl, D Fodor, Z Foka, P Freund, P and Friese, V Fuchs, M Gabler, F Gal, J Ganz, R and Gazdzicki, M Geist, W Gladysz, E Grebieszkow, J Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA Hummler, H and Igo, G Irmscher, D Jacobs, P Jones, PG Kadija, K and Kolesnikov, VI Kowalski, M Lasiuk, B Lednicky, R Levai, P Malakhov, AI Margetis, S Markert, C Melkumov, GL and Mock, A Molnar, J Nelson, JM Oldenburg, M Odyniec, G and Palla, G Panagiotou, AD Petridis, A Piper, A Porter, RJ and Poskanzer, AM Prindle, DJ Puhlhofer, F Susa, T Reid, JG Renfordt, R Retyk, W Ritter, HG Rohrich, D and Roland, C Roland, G Rudolph, H Rybicki, A Sammer, T and Sandoval, A Sann, H Semenov, AY Schafer, E Schmischke, D and Schmitz, N Schonfelder, S Seyboth, P Sikler, F and Skrzypczak, E Snellings, R Squier, GTA Stock, R and Strobele, H Struck, C Szentpetery, I Sziklai, J Toy, M and Trainor, TA Trentalange, S Ullrich, T Vassiliou, M and Veres, G Vesztergombi, G Voloshin, S Vranic, D Wang, F and Weerasundara, DD Wenig, S Whitten, C Wood, L Xu, N and Yates, TA Zimanyi, J Zhu, XZ Zybert, R
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The two-proton correlation function at midrapidity from Pb + Pb central collisions at 158 A GeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models rqmd and venus. An effective proton source size is determined by minimizing chi(2)/ndf between the correlation functions of the data and those calculated for the Gaussian sources, yielding sigma(eff) = 3.85 +/- 0.15(stat.)(-0.25)(+0.60)(syst.) fm. Both the rqmd and the venus model are consistent with the data within the error in the correlation peak region. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Published: 1999

32. The NA49 large acceptance hadron detector

Author: Afanasiev, S Alber, T Appelshauser, H Bachler, J Barna, D Barnby, LS Bartke, J Barton, RA Betev, L and Bialkowska, H Bieser, F Billmeier, A Blyth, CO Bock, R and Bormann, C Bracinik, J Brady, FP Brockmann, R Brun, R Buncic, P Caines, HL Cebra, D Cooper, GE Cramer, JG Csato, P Cyprian, M Dunn, J Eckardt, V Eckhardt, F Empl, T Eschke, J Ferguson, MI Fessler, H Fischer, HG Flierl, D Fodor, Z Frankenfeld, U Foka, P Freund, P Friese, V Ftacnik, J Fuchs, M Gabler, F Gal, J and Ganz, R Gazdzicki, M Gladysz, E Grebieszkow, J Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA Hlinka, V and Huang, I Hummler, H Igo, G Irmscher, D Ivanov, M and Janik, R Jacobs, P Jones, PG Kadija, K Kolesnikov, VI and Kowalski, M Lasiuk, B Levai, P Liebicher, K Lynen, U and Malakhov, AI Margetis, S Markert, C Marks, C Mayes, B Melkumov, GL Mock, A Molnar, J Nelson, JM and Oldenburg, M Odyniec, G Palla, G Panagiotou, AD Pestov, Y Petridis, A Pikna, M Pimpl, W Pinsky, L Piper, A and Porter, RJ Poskanzer, AM Poziombka, S Prindle, DJ and Puhlhofer, F Rauch, W Reid, JG Renfordt, R Retyk, W and Ritter, HG Rohrich, D Roland, C Roland, G Rudolph, H and Rybicki, A Sammer, T Sandoval, A Sann, H Schafer, E and Schmidt, R Schmischke, D Schmitz, N Schonfelder, S and Semenov, AY Seyboth, J Seyboth, P Seyerlein, J Sikler, F and Sitar, B Skrzypczak, E Squier, GTA Stelzer, H Stock, R Strmen, P Strobele, H Struck, C Susa, T Szarka, I and Szentpetery, I Szymanski, P Sziklai, J Toy, M and Trainor, TA Trentalange, S Ullrich, T Vassiliou, M and Veres, G Vesztergombi, G Vranic, D Wang, FQ and Weerasundara, DD Wenig, S Whitten, C Wieman, H Wienold, T Wood, L Yates, TA Zimanyi, J Zhu, XZ Zybert, R
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The NA49 detector is a wide acceptance spectrometer for the study of hadron production in p + p, p + A, and A + A collisions at the CERN SPS. The main components are 4 large-volume TPCs for tracking and particle identification via dE/dx. TOF scintillator arrays complement particle identification Calorimeters for transverse energy determination and triggering, a detector for centrality selection in p + A collisions, and beam definition detectors complete the set-up. A description of all detector components is given with emphasis on new technical realizations. Performance and operational experience are discussed in particular with respect to the high track density environment of central Pb + Pb collisions. (C) 1999 Elsevier Science B.V. All rights reserved.
Published: 1999

33. Event-by-event fluctuations of average transverse momentum in central Pb plus Pb collisions at 158 GeV per nucleon

Author: Appelshauser, H Bachler, J Bailey, SJ Barna, D Barnby, LS Bartke, J Barton, RA Betev, L Bialkowska, H and Billmeier, A Blyth, CO Bock, R Boimska, B Bormann, C and Brady, FP Brockmann, R Brun, R Buncic, P Caines, HL and Carr, LD Cebra, D Cooper, GE Cramer, JG Cristinziani, M and Csato, P Dunn, J Eckardt, V Eckhardt, F Ferguson, MI and Fischer, HG Flierl, D Fodor, Z Foka, P Freund, P and Friese, V Fuchs, M Gabler, F Gal, J Ganz, R and Gazdzicki, M Geist, W Gladysz, E Grebieszkow, J Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA Hummler, H and Igo, G Irmscher, D Jacobs, P Jones, PG Kadija, K and Kolesnikov, VI Kowalski, M Lasiuk, B Levai, P Malakhov, AI Margetis, S Markert, C Melkumov, GL Mock, A and Molnar, J Nelson, JM Oldenburg, M Odyniec, G Palla, G and Panagiotou, AD Petridis, A Piper, A Porter, RJ and Poskanzer, AM Prindle, DJ Puhlhofer, F Reid, JG and Renfordt, R Retyk, W Ritter, HG Rohrich, D Roland, C and Roland, G Rudolph, H Rybicki, A Sammer, T Sandoval, A and Sann, H Semenov, AY Schafer, E Schmischke, D and Schmitz, N Schonfelder, S Seyboth, P Seyerlein, J and Sikler, F Skrzypczak, E Snellings, R Squier, GTA Stock, R Strobele, H Struck, C Susa, T Szentpetery, I and Sziklai, J Toy, M Trainor, TA Trentalange, S Ullrich, T and Vassiliou, M Veres, G Vesztergombi, G Voloshin, S and Vranic, D Wang, F Weerasundara, DD Wenig, S Whitten, C and Wienold, T Wood, L Xu, N Yates, TA Zimanyi, J and Zhu, XZ Zybert, R NA49 Collaboration
Subjects: Nuclear Experiment
Abstract: We present first data on event-by-event fluctuations in the average transverse momentum of charged particles produced in Pb + Pb collisions at the CERN SPS. This measurement provides previously unavailable information allowing sensitive tests of microscopic and thermodynamic collision models and to search for fluctuations expected to occur in the vicinity of the predicted QCD phase transition. We find that the observed variance of the event-by-event average transverse momentum is consistent with independent particle production modified by the known two-particle correlations due to quantum statistics and final state interactions and folded with the resolution of the NA49 apparatus. For two specific models of non-statistical fluctuations in transverse momentum limits are derived in terms of fluctuation amplitude. We show that a significant part of the parameter space for a model of isospin fluctuations predicted as a consequence of chiral symmetry restoration in a non-equilibrium scenario is excluded by our measurement. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Published: 1999

34. Strangeness measurements in NA49 experiment with Pb projectiles

Author: Margetis, S., Appelshauser, H., Bachler, J., Bailey, Sj, Barna, D., Barnby, Ls, Bartke, J., Baton, Ra, Bialkowska, H., Billmeier, A., Blyth, Co, Bock, R., Bormann, C., Brady, Fp, Brockmann, R., Brun, R., Buncic, P., Caines, Hl, Lincoln Carr, Cebra, D., Cooper, Ge, Cramer, Jg, Cristinziani, M., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, Mi, Fischer, Hg, Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, Jw, Hegyi, S., Henkel, T., Hill, La, Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, Pg, Kadija, K., Kolesnikov, Vi, Kowalski, M., Lasiuk, B., Levai, P., Malakhov, Ai, Markert, C., Melkumov, Gl, Mock, A., Molnar, J., Nelson, Jm, Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, Ad, Petridis, A., Piper, A., Porter, Rj, Poskanzer, Am, Prindle, Dj, Puhlhofer, F., Rauch, W., Reid, Jg, Renfordt, R., Retyk, W., Ritter, Hg, Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, Ay, Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Snellings, R., Squier, Gta, Stock, R., Strobele, H., Struck, C., Szentpetery, I., Sziklai, J., Toy, M., Trainor, Ta, Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wang, F., Weerasundara, Dd, Wenig, S., Whitten, C., Wienold, T., Wood, L., Xu, N., Yates, Ta, Zimanyi, J., Zhu, Xz, and Zybert, R.
Subjects: NA49, heavy ion, charge strange particle, neutral strange particle, Nuclear Theory, Nuclear Experiment
Abstract: Charged and neutral strange particle production was studied by the NA49 experiment at CERN. Preliminary inclusive spectra are presented for K^+/-, K^0_S, Phi, Lamda, Antilamda and ksi^+/- particles, measured in a region close to mid-rapidity, for central Pb+Pb collisions at 158 GeV per nucleon. An enhanced strange particle production relative to properly scaled nucleon-nucleon collisions is observed, but its strength is similar to lighter S + nucleus system. The enhancement is stronger for multistrange particles.
Published: 1999

35. Xi and (Xi)over-bar production in 158 GeV/nucleon Pb+Pb collisions

Author: Appelhauser, H Bachler, J Bailey, SJ Barna, D Barnby, LS and Bartke, J Barton, RA Bialkowska, H Billmeier, A and Blyth, CO Bock, R Bormann, C Brady, FP Brockmann, R and Brun, R Buncic, P Caines, HL Carr, LD Cebra, D and Cooper, GE Cramer, JG Cristinziani, M Csato, P Dunn, J and Eckardt, V Eckhardt, F Ferguson, MI Fischer, HG and Flierl, D Fodor, Z Foka, P Freund, P Friese, V and Fuchs, M Gabler, F Ganz, R Geist, W Gal, J and Gazdzicki, M Gladysz, E Grebieszkow, J Gunther, J and Harris, JW Hegyi, S Henkel, T Hill, LA Hummler, H and Igo, G Irmscher, D Jacobs, P Jones, PG Kadija, K and Kolesnikov, VI Konashenok, A Kowalski, M Lasiuk, B and Levai, P Liu, F Malakhov, AI Margetis, S Markert, C and Melkumov, GL Mock, A Molnar, J Nelson, JM Oldenburg, M and Odyniec, G Palla, G Panagiotou, AD Petridis, A and Piper, A Porter, RJ Poskanzer, AM Prindle, DJ Puhlhofer, F Rauch, W Reid, JG Renfordt, R Retyk, W Ritter, HG and Rohrich, D Roland, C Roland, G Rudolph, H Rybicki, A and Sandoval, A Sann, H Semenov, AY Schafer, E and Schmischke, D Schmitz, N Schonfelder, S Seyboth, P and Seyerlein, J Sikler, F Skrzypczak, E Snellings, R and Squier, GTA Stock, R Strobele, H Struck, C Susa, T and Szentpetery, I Sziklai, J Toy, M Trainor, TA and Trentalange, S Ullrich, T Vassiliou, M Veres, G and Vesztergombi, G Vranic, D Wang, F Weerasundara, DD and Wenig, S Whitten, C Wienold, T Wood, L Xu, N Yates, TA Zimanyi, J Zhu, XZ Zybert, R NA49 Collaboration
Abstract: We report measurements of Xi(-) and (Xi)over-bar(+) hyperon absolute yields as a function of rapidity in 158 GeV/c Ph + Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0 12 for Xi(-), and 0.52 +/- 0.05 for (Xi)over-bar(+), leading to the ratio of (Xi)over-bar(+)/Xi(-) = 0.23 +/- 0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of T approximate to 300 MeV near mid-rapidity. The estimated total yield of Xi(-) particles in Pb+ Pb central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to Xi(-) production in properly scaled p + p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi(-) production in Pb + Pb central collisions over elementary hadron interactions. (C) 1998 Elsevier Science B.V. All rights reserved.
Published: 1998

36. Directed and elliptic flow in 158GeV/nucleon Pb+Pb collisions

Author: Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Blyth, CO Bock, R and Bormann, C Brady, FP Brockmann, R Buncic, N Buncic, P and Caines, HL Cebra, D Cooper, GE Cramer, JG Csato, P and Dunn, J Eckardt, V Eckhardt, F Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P Freund, P Friese, V and Fuchs, M Gabler, F Gal, J Gazdzicki, M Gladysz, E and Grebieszkow, J Gunther, J Harris, JW Hegyi, S and Henkel, T Hill, LA Huang, I Hummler, H Igo, G and Irmscher, D Jacobs, P Jones, PG Kadija, K Kolesnikov, VI and Kowalski, M Lasiuk, B Levai, P Malakhov, AI and Margetis, S Markert, C Melkumov, GL Mock, A Molnar, J and Nelson, JM Odyniec, G Palla, G Panagiotou, AD and Petridis, A Piper, A Porter, RJ Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F Rauch, W Reid, JG and Renfordt, R Retyk, W Ritter, HG Rohrich, D Roland, C and Roland, G Rudolph, H Rybicki, A Sandoval, A Sann, H and Semenov, AY Schafer, E Schmischke, D Schmitz, N and Schonfelder, S Seyboth, P Seyerlein, J Sikler, F and Skrzypczak, E Squier, GTA Stock, R Strobele, H and Szentpetery, I Sziklai, J Toy, M Trainor, TA and Trentalange, S Ullrich, T Vassiliou, M Vesztergombi, G and Voloshin, S Vranic, D Wang, F Weerasundara, DD Wenig, S and Whitten, C Wienold, T Wood, L Yates, TA Zimanyi, J and Zybert, R NA49 Collaboration
Subjects: Physics::Fluid Dynamics, Nuclear Theory, Nuclear Experiment
Abstract: The directed and elliptic flow of protons and charged pions has been observed from the semicentral collisions of a 158 GeV/nucleon Ph beam with a Pb target. The rapidity and transverse momentum dependence of the flow has been measured. The directed flow of the pions is opposite to that of the protons but both exhibit negative flow at low p(t). The elliptic flow of both is fairly independent of rapidity but rises with p(t).
Published: 1998

37. Charged particle production in proton-, deuteron-, oxygen- and sulphur-nucleus collisions at 200 GeV per nucleon

Author: Alber, T Appelshauser, H Bachler, J Bartke, J and Bialkowska, H Bloomer, MA Bock, R Braithwaite, WJ and Brinkmann, D Brockmann, R Buncic, P Chan, P Cramer, JG and Cramer, PB Derado, I Eberlein, B Eckardt, V Eschke, J Favuzzi, C Ferenc, D Fleischmann, B Foka, P and Freund, P Fuchs, M Gazdzicki, M Gladysz, E Grebieszkow, J Gunther, J Harris, JW Hoffmann, M Jacobs, P and Kabana, S Kadija, K Keidel, R Kowalski, M Kuhmichel, A and Lave, F Lee, JY Ljubicic, A Margetis, S Mitchell, JT and Morse, R Nappi, E Odyniec, G Paic, G Panagiotou, AD and Petridis, A Piper, A Posa, F Poskanzer, AM and Puhlhofer, F Rauch, W Renfordt, R Retyk, W Rohrich, D and Roland, G Rothard, H Runge, K Sandoval, A Schmitz, N and Schmoetten, E Sendelbach, R Seyboth, P Seyerlein, J and Skrzypczak, E Spinelli, P Stock, R Strobele, H and Teitelbaum, L Tonse, S Trainor, TA Vasileiadis, G and Vassiliou, M Vesztergombi, G Vranic, D Wenig, S Wosiek, B Zhu, X NA35 Collaboration
Subjects: Nuclear Theory, Nuclear Experiment
Abstract: The transverse momentum and rapidity distributions of net protons and negatively charged hadrons have been measured for minimum bias proton-nucleus and deuteron-gold interactions, as well as central oxygen-gold and sulphur-nucleus collisions at 200 GeV per nucleon. The rapidity density of net protons at midrapidity in central nucleus-nucleus collisions increases both with target mass for sulphur projectiles and with the projectile mass for a gold target. The shape of the rapidity distributions of net protons forward of midrapidity for d+Au and central S+Au collisions is similar. The average rapidity loss is larger than 2 units of rapidity for reactions with the gold target. The transverse momentum spectra of net protons for all reactions can be described by a thermal distribution with 'temperatures' between 145±11 MeV (p+S interactions) and 244±43 MeV (central S+Au collisions). The multiplicity of negatively charged hadrons increases with the mass of the colliding system. The shape of the transverse momentum spectra of negatively charged hadrons changes from minimum bias p+p and p+S interactions to p+Au and central nucleus-nucleus collisions. The mean transverse momentum is almost constant in the vicinity of midrapidity and shows little variation with the target and projectile masses. The average number of produced negatively charged hadrons per participant baryon increases slightly from p+p, p+A to central S+S,Ag collisions.
Published: 1998

38. Spectator nucleons in Pb+Pb collisions at 158 A center dot GeV

Author: Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Blyth, CO Bock, R and Bormann, C Brady, FP Brockmann, R Buncic, N Buncic, P and Caines, HL Cebra, D Chan, P Cooper, GE Cramer, JG and Cramer, PB Csato, P Dunn, J Eckardt, V Eckhardt, F and Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P and Freund, P Friese, V Fuchs, M Gabler, F Gal, J and Gazdzicki, M Gladysz, E Gorodetsky, P Grebieszkow, J and Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA and Huang, I Hummler, H Igo, G Irmscher, D Jacobs, P and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C and Melkumov, GL Mock, A Molnar, J Nelson, JM Odyniec, G and Palla, G Panagiotou, AD Petridis, A Piper, A Porter, RJ and Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F and Rauch, W Reid, JG Renfordt, R Retyk, W Ritter, HG and Rohrich, D Roland, C Roland, G Rudolph, H Rybicki, A and Sakrejda, I Sandoval, A Sann, H Semenov, AY Schafer, E and Schmischke, D Schmitz, N Schonfelder, S Seyboth, P and Seyerlein, J Sikler, F Skrzypczak, E Squier, GTA Stock, R Strobele, H Szentpetery, I Sziklai, J Toy, M and Trainor, TA Trentalange, S Ullrich, T Vassiliou, M and Vesztergombi, G Vranic, D Wang, F Weerasundara, DD and Wenig, S White, S Whitten, C Wienold, T Wood, L and Yates, TA Zimanyi, J Zhu, XZ Zybert, R NA49 Collaboration
Subjects: Nuclear Theory, Nuclear Experiment
Abstract: The composition of forward-going projectile spectator matter in fixed-target Pb+Pb collisions at 158 A.GeV at the CERN SPS has been studied as a function of centrality. The data were measured with the NA49 veto calorimeter. We observe that forward-going spectator matter in central collisions consists of 9 neutrons, 7 protons, and half a deuteron on average. At large impact parameters most spectator nucleons are bound in fragments. The relative resolution of the average impact parameter derived from the measurement of spectator neutrons is roughly 19% in the range from zero to half maximum impact parameters.
Published: 1998

39. A new Coulomb correction method for Bose-Einstein correlations, based on the pi(+)pi(-) correlation measurements

Author: Alber, T Appelshauser, H Bachler, J Bartke, J and Bialkowska, H Bloomer, MA Bock, R Braithwaite, WJ and Brinkmann, D Brockmann, R Buncic, P Chan, P Chase, SI and Cramer, PB Cramer, JG Derado, I Eberlein, B Eckardt, V Eschke, J Ferenc, D Fleischmann, B Foka, P Freund, P Fuchs, M Gazdzicki, M Gladysz, E Gunther, J and Harris, JW Hoffman, M Jacobs, P Kabana, S Kadija, K and Kosiec, J Kowalski, M Kuhmichel, A Lahanas, M Lee, JY and Ljubicic, A Margetis, S Mitchell, JT Morse, R Nappi, E Odyniec, G Paic, G Panagiotou, AD Petridis, A and Piper, A Posa, F Poskanzer, AM Pugh, HG Puhlhofer, F and Rai, G Rauch, W Renfordt, R Retyk, W Rohrich, D and Roland, G Rothard, H Runge, K Sandoval, A Schambach, J and Schmitz, N Schmoetten, E Schneider, I Sendelbach, R and Seyboth, P Seyerlein, J Skrzypczak, E Stefansky, P and Stock, R Strobele, H Teitelbaum, L Tonse, S Trainor, TA and Vasileiadis, G Vassiliou, M Vranic, D Wenig, S and Wensveen, M Wosiek, B
Subjects: Nuclear Experiment
Abstract: We present the measured correlation functions for pi(+)pi(-), pi(-)pi(-) and pi(+)pi(+) pairs in central S+Ag collisions at 200 GeV per nucleon. The Gamov function, which has been traditionally used to correct the correlation functions of charged pions for the Coulomb interaction, is found to be inconsistent with all measured correlation functions. Certain problems which have been dominating the systematic uncertainty of the correlation analysis are related to this inconsistency. It is demonstrated that a new Coulomb correction method, based exclusively on the measured correlation function for pi(+)pi(-) pairs, may solve the problem.
Published: 1997

40. Antibaryon production in sulphur nucleus collisions at 200 GeV per nucleon

Author: Alber, T Appelshauser, H Bachler, J Bartke, J and Bialkowska, H Bloomer, MA Bock, R Braithwaite, WJ and Brinkmann, D Brockmann, R Buncic, P Chan, P Cramer, JG and Cramer, PB Derado, I Eckardt, V Eschke, J Favuzzi, C and Ferenc, D Fleischmann, B Foka, P Freund, P Fuchs, M and Gazdzicki, M Gladysz, E Grebieszkow, J Gunther, J and Harris, JW Hoffmann, M Jacobs, P Kabana, S Kadija, K and Kowalski, M Kuhmichel, A Lee, JY Ljubicic, A Margetis, S and Mitchell, JT Morse, R Nappi, E Odyniec, G Paic, G and Panagiotou, AD Petridis, A Piper, A Posa, F and Poskanzer, AM Puhlhofer, F Rauch, W Renfordt, R Retyk, W and Rohrich, D Roland, G Rothard, H Runge, K Sandoval, A and Schmitz, N Schmoetten, E Sendelbach, R Seyboth, P and Seyerlein, J Skrzypczak, E Spinelli, P Stock, R and Strobele, H Trainor, TA Vasileiadis, G Vassiliou, M and Vranic, D Wenig, S Wosiek, B Zhu, X
Subjects: Nuclear Theory, Nuclear Experiment
Abstract: Antiproton production near midrapidity has been studied in central collisions of S-32 With sulphur, silver and gold nuclei at 200 GeV per nucleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from spectra. The rapidity density increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed in proton-proton and proton-nucleus collisions.
Published: 1996

41. TRANSVERSE ENERGY-PRODUCTION IN PB-208+PB COLLISIONS AT 158 GEV PER NUCLEON

Author: ALBER, T APPELSHAUSER, H BACHLER, J BARTKE, J and BIALKOWSKA, H BIESER, F BLOOMER, MA BLYTH, CO ROCK, R and BORMANN, C BRADY, FP BROCKMANN, R BUNCIC, P CAINES, HL CEBRA, D CHAN, P COOPER, GE CRAMER, JG CRAMER, PB and CSATO, P DERADO, I DUNN, J ECKARDT, V ECKHARDT, F and EULER, S FERGUSON, MI FISCHER, HG FODOR, Z FOKA, P and FREUND, P FUCHS, M GAL, J GAZDZICKI, M GLADYSZ, E and GREBIESZKOW, J GUNTHER, J HARRIS, JW HECK, W HEGYI, S HILL, LA HUANG, I HOWE, MA IGO, G IRMSCHER, D and JACOBS, P JONES, PG KADIJA, K KECSKEMETI, J KOWALSKI, M and KUHMICHEL, A LASIUK, B MARGETIS, S MITCHELL, JW and MOCK, A NELSON, JM ODYNIEC, G PALINKAS, J PALLA, G and PANAGIOTOU, AD PETRIDIS, A PIPER, A POSKANZER, AM and PRINDLE, DJ PUHLHOFER, F RAUCH, W RENFORDT, R RETYK, W and RITTER, HG ROHRICH, D RUDOLPH, H RUNGE, K SANDOVAL, A SANN, H SCHAFER, E SCHMITZ, N SCHONFELDER, S and SEYBOTH, P SEYERLEIN, J SIKLER, F SKRZYPCZAK, E STOCK, R and STROBELE, H SZENTPETERY, I SZIKLAI, J TOY, M and TRAINOR, TA TRENTALANGE, S VASSILIOU, M VESZTERGOMBI, G and VRANIC, D WENIG, S WHITTEN, C WIENOLD, T WOOD, L and ZIMANYI, J ZHU, XZ ZYBERT, R
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Measurements of the forward and the transverse energy in 158 GeV per nucleon Pb-208 + Pb collisions are presented. A total transverse energy of about 1 TeV is created in central collisions. An energy density of about 3 GeV/fm(3) is estimated for near head-on collisions. Only statistical fluctuations are seen in the ratio of electromagnetic to hadronic transverse energy.
Published: 1995

42. TRANSVERSE-MOMENTUM DEPENDENCE OF BOSE-EINSTEIN CORRELATIONS IN 200A GEV/C S+A COLLISIONS

Author: ALBER, T BACHLER, J BARTKE, J BIALKOWSKA, H BLOOMER, MA and BOCK, R BRAITHWAITE, WJ BRINKMANN, D BROCKMANN, R and BUNCIC, P CHAN, P CRAMER, PB CRAMER, JG DERADO, I and ECKARDT, V ESCHKE, J FAVUZZI, C FERENC, D FLEISCHMANN, B and FOKA, P FREUND, P FUCHS, M GAZDZICKI, M GLADYSZ, E and HARRIS, JW HOFFMAN, M JACOBS, P KABANA, S KADIJA, K and KOSIEC, J KOWALSKI, M KUHMICHEL, A LAHANAS, M LEE, JY LJUBICIC, A MARGETIS, S MITCHELL, JT MORSE, RJ and NAPPI, E ODYNIEC, G PAIC, G PANAGIOTOU, ED PETRIDIS, A and PIPER, A POSA, F POSKANZER, AM PUHLHOFER, F RAUCH, W and RENFORDT, R RETYK, W ROHRICH, D ROLAND, G ROTHARD, H and RUNGE, K SANDOVAL, A SCHAMBACH, J SCHMITZ, N and SCHMOETTEN, E SCHNEIDER, I SEYBOTH, P SEYERLEIN, J and SKRZYPCZAK, E SPINELLI, P STEFANSKY, P STOCK, R and STROBELE, H TRAINOR, TA VASILEIADIS, G VASSILIOU, M and VRANIC, D WENIG, S WOSIEK, B
Published: 1995

43. Erratum: Azimuthal Anisotropy of K_{S}^{0} and Λ+Λ[over ¯] Production at Midrapidity from Au+Au Collisions at sqrt[s]_{NN}=130 GeV [Phys. Rev. Lett. 89, 132301 (2002)].

Author: Adler C, Ahammed Z, Allgower C, Amonett J, Anderson BD, Anderson M, Averichev GS, Balewski J, Barannikova O, Barnby LS, Baudot J, Bekele S, Belaga VV, Bellwied R, Berger J, Bichsel H, Billmeier A, Bland LC, Blyth CO, Bonner BE, Boucham A, Brandin A, Bravar A, Cadman RV, Caines H, Calderón de la Barca Sánchez M, Cardenas A, Carroll J, Castillo J, Castro M, Cebra D, Chaloupka P, Chattopadhyay S, Chen Y, Chernenko SP, Cherney M, Chikanian A, Choi B, Christie W, Coffin JP, Cormier TM, Cramer JG, Crawford HJ, Csanád M, Deng WS, Derevschikov AA, Didenko L, Dietel T, Draper JE, Dunin VB, Dunlop JC, Eckardt V, Efimov LG, Emelianov V, Engelage J, Eppley G, Erazmus B, Fachini P, Faine V, Filimonov K, Finch E, Fisyak Y, Flierl D, Foley KJ, Fu J, Gagliardi CA, Gagunashvili N, Gans J, Gaudichet L, Germain M, Geurts F, Ghazikhanian V, Grachov O, Grigoriev V, Guedon M, Gushin E, Hallman TJ, Hardtke D, Harris JW, Henry TW, Heppelmann S, Herston T, Hippolyte B, Hirsch A, Hjort E, Hoffmann GW, Horsley M, Huang HZ, Humanic TJ, Igo G, Ishihara A, Ivanshin YI, Jacobs P, Jacobs WW, Janik M, Johnson I, Jones PG, Judd EG, Kaneta M, Kaplan M, Keane D, Kiryluk J, Kisiel A, Klay J, Klein SR, Klyachko A, Konstantinov AS, Kopytine M, Kotchenda L, Kovalenko AD, Kramer M, Kravtsov P, Krueger K, Kuhn C, Kulikov AI, Kunde GJ, Kunz CL, Kutuev RK, Kuznetsov AA, Lakehal-Ayat L, Lamont MAC, Landgraf JM, Lange S, Lansdell CP, Lasiuk B, Laue F, Lebedev A, Lednický R, Leontiev VM, LeVine MJ, Li Q, Lindenbaum SJ, Lisa MA, Liu F, Liu L, Liu Z, Liu QJ, Ljubicic T, Llope WJ, LoCurto G, Long H, Longacre RS, Lopez-Noriega M, Love WA, Ludlam T, Lynn D, Ma J, Ma R, Majka R, Margetis S, Markert C, Martin L, Marx J, Matis HS, Matulenko YA, McShane TS, Meissner F, Melnick Y, Meschanin A, Messer M, Miller ML, Milosevich Z, Minaev NG, Mitchell J, Moiseenko VA, Moore CF, Morozov V, de Moura MM, Munhoz MG, Nelson JM, Nevski P, Niida T, Nikitin VA, Nogach LV, Norman B, Nurushev SB, Odyniec G, Ogawa A, Okorokov V, Oldenburg M, Olson D, Paic G, Pandey SU, Panebratsev Y, Panitkin SY, Pavlinov AI, Pawlak T, Perevoztchikov V, Peryt W, Petrov VA, Planinic M, Pluta J, Porile N, Porter J, Poskanzer AM, Potrebenikova E, Prindle D, Pruneau C, Putschke J, Rai G, Rakness G, Ravel O, Ray RL, Razin SV, Reichhold D, Reid JG, Retiere F, Ridiger A, Ritter HG, Roberts JB, Rogachevski OV, Romero JL, Rose A, Roy C, Rykov V, Sakrejda I, Salur S, Sandweiss J, Saulys AC, Savin I, Schambach J, Scharenberg RP, Schmitz N, Schroeder LS, Schüttauf A, Schweda K, Seger J, Seliverstov D, Seyboth P, Shahaliev E, Shestermanov KE, Shimanskii SS, Shvetcov VS, Skoro G, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stephenson EJ, Stock R, Stolpovsky A, Strikhanov M, Stringfellow B, Struck C, Suaide AAP, Sugarbaker E, Suire C, Šumbera M, Surrow B, Symons TJM, Szanto de Toledo A, Szarwas P, Tai A, Takahashi J, Tang AH, Thomas JH, Thompson M, Tikhomirov V, Todoroki T, Tokarev M, Tonjes MB, Trainor TA, Trentalange S, Tribble RE, Trofimov V, Tsai O, Ullrich T, Underwood DG, Van Buren G, VanderMolen AM, Vasilevski IM, Vasiliev AN, Vigdor SE, Voloshin SA, Wang F, Ward H, Watson JW, Wells R, Westfall GD, Whitten C, Wieman H, Willson R, Wissink SW, Witt R, Wood J, Xu N, Xu Z, Yakutin AE, Yamamoto E, Yang J, Yepes P, Yurevich VI, Zanevski YV, Zborovský I, Zhang H, Zhang WM, Zoulkarneev R, and Zubarev AN
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.89.132301.
Published: 2021
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44. Erratum: Azimuthal Anisotropy at the Relativistic Heavy Ion Collider: The First and Fourth Harmonics [Phys. Rev. Lett. 92, 062301 (2004)].

Author: Adams J, Adler C, Aggarwal MM, Ahammed Z, Amonett J, Anderson BD, Anderson M, Arkhipkin D, Averichev GS, Badyal SK, Balewski J, Barannikova O, Barnby LS, Baudot J, Bekele S, Belaga VV, Bellwied R, Berger J, Bezverkhny BI, Bhardwaj S, Bhaskar P, Bhati AK, Bichsel H, Billmeier A, Bland LC, Blyth CO, Bonner BE, Botje M, Boucham A, Brandin A, Bravar A, Cadman RV, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Carroll J, Castillo J, Castro M, Cebra D, Chaloupka P, Chattopadhyay S, Chen HF, Chen Y, Chernenko SP, Cherney M, Chikanian A, Choi B, Christie W, Coffin JP, Cormier TM, Cramer JG, Crawford HJ, Csanád M, Das D, Das S, Derevschikov AA, Didenko L, Dietel T, Dong WJ, Dong X, Draper JE, Du F, Dubey AK, Dunin VB, Dunlop JC, Dutta Majumdar MR, Eckardt V, Efimov LG, Emelianov V, Engelage J, Eppley G, Erazmus B, Estienne M, Fachini P, Faine V, Faivre J, Fatemi R, Filimonov K, Filip P, Finch E, Fisyak Y, Flierl D, Foley KJ, Fu J, Gagliardi CA, Gagunashvili N, Gans J, Ganti MS, Gaudichet L, Germain M, Geurts F, Ghazikhanian V, Ghosh P, Gonzalez JE, Grachov O, Grigoriev V, Gronstal S, Grosnick D, Guedon M, Guertin SM, Gupta A, Gushin E, Gutierrez TD, Hallman TJ, Hardtke D, Harris JW, Heinz M, Henry TW, Heppelmann S, Herston T, Hippolyte B, Hirsch A, Hjort E, Hoffmann GW, Horsley M, Huang HZ, Huang SL, Humanic TJ, Igo G, Ishihara A, Jacobs P, Jacobs WW, Janik M, Jiang H, Johnson I, Jones PG, Judd EG, Kabana S, Kaneta M, Kaplan M, Keane D, Khodyrev VY, Kiryluk J, Kisiel A, Klay J, Klein SR, Klyachko A, Koetke DD, Kollegger T, Kopytine M, Kotchenda L, Kovalenko AD, Kramer M, Kravtsov P, Kravtsov VI, Krueger K, Kuhn C, Kulikov AI, Kumar A, Kunde GJ, Kunz CL, Kutuev RK, Kuznetsov AA, Lamont MAC, Landgraf JM, Lange S, Lansdell CP, Lasiuk B, Laue F, Lauret J, Lebedev A, Lednický R, LeVine MJ, Li C, Li Q, Lindenbaum SJ, Lisa MA, Liu F, Liu L, Liu Z, Liu QJ, Ljubicic T, Llope WJ, Long H, Longacre RS, Lopez-Noriega M, Love WA, Ludlam T, Lynn D, Ma J, Ma R, Ma YG, Magestro D, Mahajan S, Mangotra LK, Mahapatra DP, Majka R, Manweiler R, Margetis S, Markert C, Martin L, Marx J, Matis HS, Matulenko YA, McShane TS, Meissner F, Melnick Y, Meschanin A, Messer M, Miller ML, Milosevich Z, Minaev NG, Mironov C, Mishra D, Mitchell J, Mohanty B, Molnar L, Moore CF, Mora-Corral MJ, Morozov DA, Morozov V, de Moura MM, Munhoz MG, Nandi BK, Nayak SK, Nayak TK, Nelson JM, Nevski P, Niida T, Nikitin VA, Nogach LV, Norman B, Nurushev SB, Odyniec G, Ogawa A, Okorokov V, Oldenburg M, Olson D, Paic G, Pandey SU, Pal SK, Panebratsev Y, Panitkin SY, Pavlinov AI, Pawlak T, Perevoztchikov V, Perkins C, Peryt W, Petrov VA, Phatak SC, Picha R, Planinic M, Pluta J, Porile N, Porter J, Poskanzer AM, Potekhin M, Potrebenikova E, Potukuchi BVKS, Prindle D, Pruneau C, Putschke J, Rai G, Rakness G, Raniwala R, Raniwala S, Ravel O, Ray RL, Razin SV, Reichhold D, Reid JG, Renault G, Retiere F, Ridiger A, Ritter HG, Roberts JB, Rogachevski OV, Romero JL, Rose A, Roy C, Ruan LJ, Sahoo R, Sakrejda I, Salur S, Sandweiss J, Savin I, Schambach J, Scharenberg RP, Schmitz N, Schroeder LS, Schweda K, Seger J, Seliverstov D, Seyboth P, Shahaliev E, Shao M, Sharma M, Shestermanov KE, Shimanskii SS, Singaraju RN, Simon F, Skoro G, Smirnov N, Snellings R, Sood G, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus S, Stock R, Stolpovsky A, Strikhanov M, Stringfellow B, Struck C, Suaide AAP, Sugarbaker E, Suire C, Šumbera M, Surrow B, Symons TJM, Szanto de Toledo A, Szarwas P, Tai A, Takahashi J, Tang AH, Thein D, Thomas JH, Tikhomirov V, Todoroki T, Tokarev M, Tonjes MB, Trainor TA, Trentalange S, Tribble RE, Trivedi MD, Trofimov V, Tsai O, Ullrich T, Underwood DG, Van Buren G, VanderMolen AM, Vasiliev AN, Vasiliev M, Vigdor SE, Viyogi YP, Voloshin SA, Waggoner W, Wang F, Wang G, Wang XL, Wang ZM, Ward H, Watson JW, Wells R, Westfall GD, Whitten C, Wieman H, Willson R, Wissink SW, Witt R, Wood J, Wu J, Xu N, Xu Z, Xu ZZ, Yamamoto E, Yepes P, Yurevich VI, Zanevski YV, Zborovský I, Zhang H, Zhang WM, Zhang ZP, Żołnierczuk PA, Zoulkarneev R, Zoulkarneeva J, and Zubarev AN
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.92.062301.
Published: 2021
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45. Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV.

Author: Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Braidot E, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Sánchez MC, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Leyva AD, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Estienne M, Eun L, Evdokimov O, Fachini P, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk OG, Grosnick D, Gupta A, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Pei H, Peitzmann T, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma M, Shi SS, Shou QY, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: We report transverse momentum (p(T)≤15 GeV/c) spectra of π(±), K(±), p, p[over ¯], K(S)(0), and ρ(0) at midrapidity in p+p and Au+Au collisions at √S(NN)=200 GeV. Perturbative QCD calculations are consistent with π(±) spectra in p+p collisions but do not reproduce K and p(p[over ¯]) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p(T) provide experimental evidence for varying quark and gluon jet contributions to high-p(T) hadron yields. The relative hadron abundances in Au+Au at p(T)≳8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.
Published: 2012
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46. Measurement of the parity-violating longitudinal single-spin asymmetry for W± boson production in polarized proton-proton collisions at sqrt[s] = 500 GeV.

Author: Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Biritz B, Bland LC, Borowski W, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Calderón de la Barca Sánchez M, 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, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, Elnimr M, Engelage J, Eppley G, Erazmus B, Estienne M, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Ganti MS, Geromitsos A, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Guertin SM, Gupta A, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Krueger K, Krus M, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Lukashov EV, Luo X, 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, Mitrovski MK, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Naglis M, Nandi BK, Nayak TK, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Ohlson A, Okorokov V, Oldag EW, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Ruan L, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto 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, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA, Varma R Jr, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu YF, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at sqrt[s] = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 ± 0.10(stat.) ± 0.02(syst.) ± 0.03(norm.) and A(L)(W-) = 0.14 ± 0.19(stat.) ± 0.02(syst.) ± 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.
Published: 2011
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47. Measurement of the bottom quark contribution to nonphotonic electron production in p + p collisions at √s=200 GeV.

Author: Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson D, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Baumgart S, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Biritz B, Bland LC, Bonner BE, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Calderón de la Barca Sánchez M, 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, Elhalhuli E, Elnimr M, Engelage J, Eppley G, Erazmus B, Estienne M, Eun L, Evdokimov O, Fachini P, Fatemi R, Fedorisin J, Fersch RG, 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, Guertin SM, Gupta A, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, 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, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Krueger K, Krus M, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, Levine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lin G, Lin XY, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Lukashov EV, Luo X, 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, Mitrovski MK, Mohanty B, Mondal MM, Morozov 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, Okorokov V, Oldag EW, 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 BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto 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, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, 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 XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu YF, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at √s=200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of pT≥5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT.
Published: 2010
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48. Observation of an antimatter hypernucleus.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Anderson BD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Baumgart S, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Biritz B, Bland LC, Bonner BE, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Calderon M, 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, Elhalhuli E, Elnimr M, Engelage J, Eppley G, Erazmus B, Estienne M, Eun L, Evdokimov O, Fachini P, Fatemi R, Fedorisin J, Fersch RG, 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, Gupta A, Gupta N, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang B, 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, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Konzer J, Kopytine M, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Krueger K, Krus M, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, Levine MJ, Li C, Li L, Li N, Li W, Li X, Li Y, Li Z, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mal 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, Mitrovski MK, Mohanty B, Mondal MM, Morozov 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 BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto 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, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, 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 XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wingfield E, Wissink SW, Witt R, Wu Y, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang J, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: Nuclear collisions recreate conditions in the universe microseconds after the Big Bang. Only a very small fraction of the emitted fragments are light nuclei, but these states are of fundamental interest. We report the observation of antihypertritons--comprising an antiproton, an antineutron, and an antilambda hyperon--produced by colliding gold nuclei at high energy. Our analysis yields 70 +/- 17 antihypertritons ((Lambda)(3)-H) and 157 +/- 30 hypertritons (Lambda3H). The measured yields of Lambda3H ((Lambda)(3)-H) and 3He (3He) are similar, suggesting an equilibrium in coordinate and momentum space populations of up, down, and strange quarks and antiquarks, unlike the pattern observed at lower collision energies. The production and properties of antinuclei, and of nuclei containing strange quarks, have implications spanning nuclear and particle physics, astrophysics, and cosmology.
Published: 2010
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49. Observation of two-source interference in the photoproduction reaction AuAu --> AuAurho0.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Anderson BD, Arkhipkin D, Averichev GS, Bai Y, Balewski J, Barannikova O, Barnby LS, Baudot J, Baumgart S, Beavis DR, Bellwied R, Benedosso F, Betancourt MJ, Betts RR, Bhardwaj 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, Calderón de la Barca Sánchez M, 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, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunlop JC, Dutta Mazumdar MR, 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 KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann 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, Jakl 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 MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, 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, 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, Milner 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 BV, 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, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, 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, Vander Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, 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 Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xie W, 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, and Zuo JX
Abstract: In ultraperipheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a rho{0}. The rho{0} production occurs in two well-separated (median impact parameters of 20 and 40 F for the cases considered here) nuclei, so the system forms a two-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing rho{0} production. Since the rho{0} decays before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled nonlocal wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87%+/-5%(stat.)+/-8%(syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors of 23% at the 90% confidence level.
Published: 2009
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50. Indications of conical emission of charged hadrons at the BNL relativistic heavy ion collider.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Anderson BD, Arkhipkin D, Averichev GS, Bai Y, Balewski J, Barannikova O, Barnby LS, Baudot J, Baumgart S, Beavis DR, Bellwied R, Benedosso F, Betts RR, Bhardwaj 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, Calderón de la Barca Sánchez M, 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, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, De Silva C, de Moura MM, 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, Dutta Mazumdar MR, 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 KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann 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, Jakl P, Jin F, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, 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 MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, 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, Millane J, Miller ML, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Molnar L, 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 BV, Prindle D, Pruneau C, Pruthi NK, Putschke J, Raniwala R, Raniwala S, Ray RL, 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, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, 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, Vander Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C Jr, 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, and Zuo JX
Abstract: Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d+Au, and Au+Au collisions at sqrt[s_{NN}]=200 GeV by the STAR experiment. Dijet structures are observed in pp, d+Au and peripheral Au+Au collisions. An additional structure is observed in central Au+Au data, signaling conical emission of correlated charged hadrons. The conical emission angle is found to be theta=1.37+/-0.02(stat)-0.07+0.06(syst), independent of p_{ perpendicular}.
Published: 2009
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