Author: "Ross JF" / Journal: indrastra global - Searchworks@Jio Institute Digital Library Search Results

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23 results on '"Ross JF"'

1. Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

Author: ABDELWAHAB, NM, ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CAMPBELL, JM, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOSARZEWSKI, LK, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, PAGE, BS, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PILE, P, PLANINIC, M, PLUTA, J, POLJAK, N, PONIATOWSKA, K, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMKO, M, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Nonflow, Flow, Heavy-Ion, Relativistic Nuclear Collisions, Collective Flow
Abstract: A data-driven method was applied to Au+Au collisions at root S-NN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Delta eta-dependent and Delta eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Delta eta-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of. within the measured range of pseudorapidity vertical bar eta vertical bar < 1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34% +/- 2%(stat.) +/- 3%(sys.) for particles with transverse momentum p(T) less than 2 GeV/c. The Delta eta-dependent part, attributed to nonflow correlations, is found to be 5% +/- 2%(sys.) relative to the flow of the measured second harmonic cumulant at vertical bar Delta eta vertical bar > 0.7. (C) 2015 The Authors. Published by Elsevier B.V.
Published: 2015

2. Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at root s=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CAMPBELL, JM, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUDD, AB, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOSARZEWSKI, LK, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, 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, POLJAK, N, PONIATOWSKA, K, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Parton Distributions, Uncertainties
Abstract: We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, A(LL), in polarized pp collisions at center-of-mass energy root s = 200 GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep-inelastic scattering (DIS), semi-inclusive DIS, and RHIC pp data. The measured asymmetries provide evidence at the 3 sigma level for positive gluon polarization in the Bjorken-x region x > 0.05.
Published: 2015
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3. Charged-to-neutral correlation at forward rapidity in Au plus Au collisions at root s(NN)=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CAMPBELL, JM, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOSARZEWSKI, LK, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, PAGE, BS, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PILE, P, PLANINIC, M, PLUTA, J, POLJAK, N, PONIATOWSKA, K, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMKO, M, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Disoriented Chiral Condensate, Star Experiment, Time Projection Chamber, Perspective, Quark-Gluon Plasma, Search, Heavy-Ion Collisions, Fluctuations, Detector, Collaboration
Abstract: Event-by-event fluctuations of the multiplicities of inclusive charged particles and photons at forward rapidity in Au + Au collisions at root s(NN) = 200 GeV have been studied. The dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidence of dynamical fluctuations of different physical origins. Observables constructed out of moments of multiplicities are used as measures of fluctuations. Mixed events and model calculations are used as base lines. Results are compared to the dynamical net-charge fluctuations measured in the same acceptance. A nonzero statistically significant signal of dynamical fluctuations is observed in excess to the model prediction when charged particles and photons are measured in the same acceptance. We find that, unlike dynamical net-charge fluctuation, charge-neutral fluctuation is not dominated by correlation owing to particle decay. Results are compared to the expectations based on the generic production mechanism of pions owing to isospin symmetry, for which no significant (
Published: 2015

4. Lambda Lambda Correlation Function in Au plus Au Collisions at root s(NN)=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCDLB, CAMPBELL, JM, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOSARZEWSKI, LK, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, PAGE, BS, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PILE, P, PLANINIC, M, PLUTA, J, POLJAK, N, PONIATOWSKA, K, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMKO, M, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Particles, Dihyperon, Dibaryon, Hypernuclei, Search, Heavy-Ion Collisions, Femtoscopy, Stars
Abstract: We present Lambda Lambda correlation measurements in heavy-ion collisions for Au + Au collisions at root s(NN) = 200 GeV using the STAR experiment at the Relativistic Heavy-Ion Collider. The Lednicky-Lyuboshitz analytical model has been used to fit the data to obtain a source size, a scattering length and an effective range. Implications of the measurement of the Lambda Lambda correlation function and interaction parameters for dihyperon searches are discussed.
Published: 2015

5. Jet-Hadron Correlations in root s(NN)=200 GeV p plus p and Central Au plus Au Collisions

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, 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, POLJAK, N, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Star, Nucleus-Nucleus Collisions, Particle Suppression, Time Projection Chamber, Perspective, Quark-Gluon Plasma, Tev, Dependence, Collaboration, Transverse-Momentum
Abstract: Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au + Au and p + p collisions at root s(NN) = 200 GeV in STAR are presented. The trigger jet population in Au + Au collisions is biased toward jets that have not interacted with the medium, allowing easier matching of jet energies between Au + Au and p + p collisions while enhancing medium effects on the recoil jet. The associated hadron yield of the recoil jet is significantly suppressed at high transverse momentum (p(T)(assoc)) and enhanced at low p(T)(assoc) in 0%-20% central Au + Au collisions compared to p + p collisions, which is indicative of medium-induced parton energy loss in ultrarelativistic heavy-ion collisions.
Published: 2014
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6. J/psi production at low p(T) in Au plus Au and Cu plus Cu collisions at root s(NN)=200 GeV with the STAR detector

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CAMPBELL, JM, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOSARZEWSKI, LK, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, PAGE, BS, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PILE, P, PLANINIC, M, PLUTA, J, POLJAK, N, PONIATOWSKA, K, PORTER, J, POSKANZER, AM, POWELL, CB, PRUTHI, NK, PRZYBYCIEN, M, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SIMKO, M, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: System, Matter, Momentum Dependence, Quark-Gluon Plasma, Heavy-Ion Collisions, Particle Identification, Charmonium Production, Psi-Suppression, Energy Nuclear Collisions
Abstract: The J/psi p(T) spectrum and nuclear modification factor (R-AA) are reported for p(T) < 5 GeV/c and vertical bar y vertical bar < 1 from 0% to 60% central Au + Au and Cu + Cu collisions at root s(NN) = 200 GeV at STAR. A significant suppression of p(T) - integrated J/psi production is observed in central Au + Au events. The Cu + Cu data are consistent with no suppression, although the precision is limited by the available statistics. R-AA in Au + Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with p(T). The data are compared to high-p(T) STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low p(T) are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration.
Published: 2014

7. Suppression of Upsilon production in d plus Au and Au plus Au collisions at root S-NN=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HILL, K, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PETERSON, A, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, 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, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WIMSATT, G, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Nucleus Collisions, Relativistic Heavy-Ion Collisions, Star, Heavy-Ion Collisions, Lhc, Upsilon Suppression, Quarkonium In-Medium, J/Psi, Absorption
Abstract: We report measurements of Upsilon meson production in p + p, d + Au, and Au + Au collisions using the STAR detector at RHIC. We compare the Upsilon yield to the measured cross section in p + p collisions in order to quantify any modifications of the yield in cold nuclear matter using d + Au data and in hot nuclear matter using Au + Au data separated into three centrality classes. Our p + p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Upsilon (1S + 2S + 3S) in the rapidity range vertical bar y vertical bar < 1 in d + Au collisions of R-dAu = 0.79 +/- 0.24(stat.) +/- 0.03(syst.) +/- 0.10(p + p syst.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au + Au collisions, we measure a nuclear modification factor of R-AA = 0.49 +/- 0.1(stat.) +/- 0.02(syst.) +/- 0.06(p + p syst.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Upsilon mesons in Au + Au collisions. The additional suppression in Au + Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark-Gluon Plasma. However, understanding the suppression seen in d + Au is still needed before any definitive statements about the nature of the suppression in Au + Au can be made. (C) 2014 The Authors. Published by Elsevier B.V.
Published: 2014
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8. Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARBER, B, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BRIDGEMAN, A, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HE, W, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JENA, C, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOH, SY, NORD, PM, NOVAK, J, NURUSHEV, SB, 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, PETERSON, A, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POCHRON, W, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHAUB, J, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, 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, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VASILIEV, AN, VERTESI, R, VIDEBK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Pi-0 Production, Star, Parton Distributions, Fragmentation, Plus P Collisions, Antiprotons, Qcd, Transverse-Momentum
Abstract: The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < eta < 2.0 in polarized proton-proton collisions at root s = 200 GeV are presented. Neutral pions were detected using the end cap electromagnetic calorimeter in the STAR detector at RHIC. The cross section was measured over a transverse momentum range of 5 < p(T) < 16 GeV/c and is found to agree with a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry A(LL) is measured in the same pseudorapidity range and spans a range of Bjorken-x down to x approximate to 0.01. The measured A(LL) is consistent with model predictions for varying degrees of gluon polarization. The parity-violating asymmetry A(L) is also measured and found to be consistent with zero. The transverse single-spin asymmetry A(N) is measured over a previously unexplored kinematic range in Feynman-x and p(T). Such measurements may aid our understanding of the onset and kinematic dependence of the large asymmetries observed at more forward pseudorapidity (eta approximate to 3) and their underlying mechanisms. The A(N) results presented are consistent with a twist-3 model prediction of a small asymmetry over the present kinematic range.
Published: 2014
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9. Dielectron Mass Spectra from Au plus Au Collisions at root s(NN)=200 Ge V

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, 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, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, 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, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VASILIEV, AN, VERTESI, R, VIDEBK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Matter, Restoration, Perspective, Quark-Gluon Plasma, Heavy-Ion Collisions, Collaboration, Dileptons
Abstract: We report the STAR measurements of dielectron (e(+)e(-)) production at midrapidity (vertical bar y(ee)vertical bar < 1) in Au + Au collisions at root s(NN) = 200 GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 (rho-like), 0.76-0.80 (omega-like), and 0.98-1.05 (phi-like) GeV/c(2). The spectrum in the omega-like and phi-like regions can be well described by the hadronic cocktail simulation. In the rho-like region, however, the vacuum rho spectral function cannot describe the shape of the dielectron excess. In this range, an enhancement of 1.77 +/- 0.11(stat) +/- 0.24(syst) +/- 0.33(cocktail) is determined with respect to the hadronic cocktail simulation that excludes the rho meson. The excess yield in the rho-like region increases with the number of collision participants faster than the omega and phi yields. Theoretical models with broadened rho contributions through interactions with constituents in the hot QCD medium provide a consistent description of the dilepton mass spectra for the measurement presented here and the earlier data at the Super Proton Synchrotron energies.
Published: 2014

10. Observation of D-0 Meson Nuclear Modifications in Au plus Au Collisions at root(NN)-N-s=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BANERJEE, A, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CONTIN, G, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, EYSER, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GREINER, L, GROSNICK, D, GUNARATHNE, DS, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUANG, X, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOTCHENDA, L, KRAISHAN, AF, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LOMNITZ, M, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NIGMATKULOV, G, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLVITT, DL, 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, POLJAK, N, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, RUSNAKOVA, O, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, D, SMIRNOV, N, SOLANKI, D, SORENSEN, P, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, SZELEZNIAK, MA, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TURNAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANDENBROUCKE, M, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, J, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, YU, N, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, JL, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Charm, Star, Qcd Matter, Spectra, Collaboration, Dynamics
Abstract: We report the first measurement of charmed-hadron (D-0) production via the hadronic decay channel (D-0 -> K- + pi(+)) in Au + Au collisions at root(NN)-N-s = 200 GeV with the STAR experiment. The charm production cross section per nucleon- nucleon collision at midrapidity scales with the number of binary collisions, N-bin, from p + p to central Au + Au collisions. The D-0 meson yields in central Au + Au collisions are strongly suppressed compared to those in p + p scaled by N-bin, for transverse momenta p(T) > 3 GeV/c, demonstrating significant energy loss of charm quarks in the hot and dense medium. An enhancement at intermediate p(T) is also observed. Model calculations including strong charm-medium interactions and coalescence hadronization describe our measurements.
Published: 2014

11. Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions in Au plus Au Collisions at RHIC

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, L, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GIRARD, M, GLISKE, S, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PETERSON, A, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, 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, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VASILIEV, AN, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Star, Qcd, Point
Abstract: We report the first measurements of the moments-mean (M), variance (sigma(2)), skewness (S), and kurtosis (kappa)-of the net-charge multiplicity distributions at midrapidity in Au + Au collisions at seven energies, ranging from root s(NN) = 7.7 to 200 GeV, as a part of the Beam Energy Scan program at RHIC. The moments are related to the thermodynamic susceptibilities of net charge, and are sensitive to the location of the QCD critical point. We compare the products of the moments, sigma(2)/M, S sigma, and kappa sigma(2), with the expectations from Poisson and negative binomial distributions (NBDs). The S sigma values deviate from the Poisson baseline and are close to the NBD baseline, while the kappa sigma(2) values tend to lie between the two. Within the present uncertainties, our data do not show nonmonotonic behavior as a function of collision energy. These measurements provide a valuable tool to extract the freeze-out parameters in heavy-ion collisions by comparing with theoretical models.
Published: 2014

12. System-size dependence of transverse momentum correlations at root s(NN)=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BHATTARAI, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, 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, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, 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, FLORES, E, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, 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, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, 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, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOVAK, J, 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, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, 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, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, 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, L, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Plus Pb Collisions, Signatures, Quark-Gluon Plasma, Au-Au Collisions, Mean-P(T) Fluctuations, By-Event Fluctuations, Nuclear Collisions, Ratio, Dynamics, Model
Abstract: We present a study of the average transverse momentum (p(t)) fluctuations and p(t) correlations for charged particles produced in Cu + Cu collisions at midrapidity for root s(NN) = 62.4 and 200 GeV. These results are compared with those published for Au + Au collisions at the same energies, to explore the system size dependence. In addition to the collision energy and system size dependence, the p(t) correlation results have been studied as functions of the collision centralities, the ranges in p(t), the pseudorapidity eta, and the azimuthal angle phi. The square root of the measured p(t) correlations when scaled by mean p(t) is found to be independent of both colliding beam energy and system size studied. Transport-based model calculations are found to have a better quantitative agreement with the measurements compared to models which incorporate only jetlike correlations.
Published: 2013

13. Freeze-out dynamics via charged kaon femtoscopy in root sNN=200 GeV central Au plus Au collisions

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BHATTARAI, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, 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, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, GREBENYUK, G, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOVAK, J, 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, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHEN, WQ, 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, 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, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, YAN, YANG, C, YANG, Y, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Perspective, Quark-Gluon Plasma, Bose-Einstein Correlations, Collaboration
Abstract: We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from root sNN = 200 GeV Au + Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event-generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source function is generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m(T) over the interval of 0.55
Published: 2013

14. Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, 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, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, 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, DAS, S, 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, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, 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, NELSON, JM, 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, 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, SAHU, PK, 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, 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, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Impact-Picture, Energy, 1st Measurement, Polarization, Region, Beam, A(N), Elastic Scattering, Pp, Interference, Pomeron
Abstract: We report a high precision measurement of the transverse single spin asymmetry A(N) at the center of mass energy root s = 200 GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The A(N) was measured in the four-momentum transfer squared t range 0.003
Published: 2013
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15. Measurement of J/psi Azimuthal Anisotropy in Au plus Au Collisions at root s(NN)=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, 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, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, 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, FLORES, E, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, 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, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, 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, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOVAK, J, 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, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, 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, 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, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, 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, L, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Star, Models, Flow, Heavy-Ion Collisions, Quark Coalescence
Abstract: The measurement of J/psi azimuthal anisotropy is presented as a function of transverse momentum for different centralities in Au + Au collisions at root s(NN) = 200 GeV. The measured J/psi elliptic flow is consistent with zero within errors for transverse momentum between 2 and 10 GeV/c. Our measurement suggests that J/psi particles with relatively large transverse momenta are not dominantly produced by coalescence from thermalized charm quarks, when comparing to model calculations.
Published: 2013

16. Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, 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, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, 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, FLORES, E, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, 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, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, 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, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOVAK, J, 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, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, 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, 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, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, 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, L, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Star, Energy, Models, Quark-Gluon Plasma, Heavy-Ion Collisions, Anisotropy, Relativistic Nuclear Collisions, Strange Particles, Signature, Collaboration
Abstract: Measurements of the elliptic flow, upsilon(2), of identified hadrons (pi(+/-), K-+/-, K-s(0), p, (p) over bar, phi, Lambda, (Lambda) over bar, Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+)) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV are presented. The measurements were done at midrapidity using the time-projection chamber and the time-of-flight detectors of the Solenoidal Tracker at RHIC experiment during the beam-energy scan program at Relativistic Heavy Ion Collider. A significant difference in the upsilon(2) values for particles and the corresponding antiparticles was observed at all transverse momenta for the first time. The difference increases with decreasing center-of-mass energy, root s(NN) (or increasing baryon chemical potential, mu(B)), and is larger for the baryons as compared to the mesons. This implies that particles and antiparticles are no longer consistent with the universal number-of-constituent quark (NCQ) scaling of upsilon(2) that was observed at root s(NN) = 200 GeV. However, for the selected group of particles (p(+), K+, K-s(0), p, Lambda, Xi(-), Omega(-)) NCQ scaling at (m(T) - m(0))/n(q) > 0.4 GeV/c(2) is not violated within +/- 10%. The upsilon(2) values for f mesons at 7.7 and 11.5 GeV are approximately two standard deviations from the trend defined by the other hadrons at the highest measured p(T) values.
Published: 2013

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

Author: ADAMCZYK, L, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, 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, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHDYAY, 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, DAS, S, 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, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, 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, NELSON, JM, 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, 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, SAHU, PK, 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, 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, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: J/Psi Suppression, D+Au Collisions, Star, Star Experiment, Quark-Gluon Plasma, Quarkonium, Heavy-Ion Collisions, P+P, Distributions, Detector, Proton, Flavor, Color-Screening
Abstract: We report J/psi spectra for transverse momenta P-T > 5 GeV/c at mid-rapidity in p + p and Au + Au collisions at root s(NN) = 200 GeV. The inclusive J/psi spectrum and the extracted B-hadron feed-down are compared to models incorporating different production mechanisms. We observe significant suppression of the J/psi yields for p(T) > 5 GeV/c in 0-30% central Au + Au collisions relative to the p + p yield scaled by the number of binary nucleon-nucleon collisions in Au + Au collisions. In 30-60% mid-central collisions, no such suppression is observed. The level of suppression is consistently less than that of high-p(T) pi(+/-) and low-p(T) J/psi at RHIC and high-p(T) J/psi at the LHC. (C) 2013 Elsevier B.V. All rights reserved.
Published: 2013

18. Fluctuations of charge separation perpendicular to the event plane and local parity violation in root S-NN=200 GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, E, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BARNOVSKA, Z, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BRUNA, E, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, 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, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, F, DION, A, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFIMOV, LG, ELNIMR, M, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, GREBENYUK, OG, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MIODUSZEWSKI, S, MITROVSKI, MK, MOHAMMED, Y, MOHANTY, B, MONDAL, MM, MUNHOZ, MG, MUSTAFA, MK, NAGLIS, M, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOVAK, J, 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, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, B, SCHMITZ, N, SCHUSTER, TR, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHAO, M, SHARMA, B, SHARMA, M, SHEN, WQ, 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, 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, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, VERTESI, R, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, W, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Hot Qcd, Collisions, Conservation
Abstract: Previous experimental results based on data (similar to 15 x 10(6) events) collected by the STAR detector at the BNL Relativistic Heavy Ion Collider suggest event-by-event charge-separation fluctuations perpendicular to the event plane in noncentral heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high-statistics 200-GeV Au + Au collisions data set (57 x 10(6) events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge-separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same- and opposite-charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion.
Published: 2013

19. Third harmonic flow of charged particles in Au plus Au collisions at root s(NN)=200 GeV

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, 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, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAI, XZ, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, C, 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, DAS, S, 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, FLORES, E, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, F, GIBSON, A, GLISKE, S, GORBUNOV, YN, 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, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JENA, C, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KIKOLA, DP, KIRYLUK, J, KISEL, I, KISIEL, A, KIZKA, V, KLEIN, SR, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, 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, 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, NELSON, JM, 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, POLJAK, N, PORTER, J, POSKANZER, AM, POWELL, CB, PRUNEAU, C, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, REDWINE, R, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, 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, THOMAS, JH, TIAN, J, TIMMINS, AR, TLUSTY, D, TOKAREV, M, 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, 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, L, YIP, K, YOO, IK, ZAWISZA, M, ZBROSZCZYK, H, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKARNEEVA, Y, and ZYZAK, M
Subjects: Star, Time Projection Chamber, Model
Abstract: We report measurements of the third harmonic coefficient of the azimuthal anisotropy, upsilon(3), known as triangular flow. The analysis is for charged particles in Au + Au collisions at root s(NN) = 200 GeV, based on data from the STAR experiment at the BNL Relativistic Heavy Ion Collider. Two-particle correlations as a function of their pseudorapidity separation are fit with narrow and wide Gaussians. Measurements of triangular flow are extracted from the wide Gaussian, from two-particle cumulants with a pseudorapidity gap, and also from event plane analysis methods with a large pseudorapidity gap between the particles and the event plane. These results are reported as a function of transverse momentum and centrality. A large dependence on the pseudorapidity gap is found. Results are compared with other experiments and model calculations.
Published: 2013

20. 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

21. 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

22. 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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23. 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

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23 results on '"Ross JF"'

1. Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

2. Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at root s=200 GeV

3. Charged-to-neutral correlation at forward rapidity in Au plus Au collisions at root s(NN)=200 GeV

4. Lambda Lambda Correlation Function in Au plus Au Collisions at root s(NN)=200 GeV

5. Jet-Hadron Correlations in root s(NN)=200 GeV p plus p and Central Au plus Au Collisions

6. J/psi production at low p(T) in Au plus Au and Cu plus Cu collisions at root s(NN)=200 GeV with the STAR detector

7. Suppression of Upsilon production in d plus Au and Au plus Au collisions at root S-NN=200 GeV

8. Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV

9. Dielectron Mass Spectra from Au plus Au Collisions at root s(NN)=200 Ge V

10. Observation of D-0 Meson Nuclear Modifications in Au plus Au Collisions at root(NN)-N-s=200 GeV

11. Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions in Au plus Au Collisions at RHIC

12. System-size dependence of transverse momentum correlations at root s(NN)=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider

13. Freeze-out dynamics via charged kaon femtoscopy in root sNN=200 GeV central Au plus Au collisions

14. Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV

15. Measurement of J/psi Azimuthal Anisotropy in Au plus Au Collisions at root s(NN)=200 GeV

16. Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV

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

18. Fluctuations of charge separation perpendicular to the event plane and local parity violation in root S-NN=200 GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider

19. Third harmonic flow of charged particles in Au plus Au collisions at root s(NN)=200 GeV

20. Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at root s=200 GeV

21. Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV

22. 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

23. Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV

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23 results on '"Ross JF"'

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