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16 results on '"Grube B"'

1. Charged and strange hadron elliptic flow in Cu plus Cu collisions at root s(NN)=62.4 and 200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, GARCIA-SOLIS, EJ, GRUBE, B, GEROMITSOS, A, ULERY, J, GEURTS, F, BEAVIS, DR, BETTS, RR, KETTLER, D, KIKOLA, DP, WANG, F, ZHAO, J, ROMERO, JL, SAKUMA, T, ZHU, YH, KIRYLUK, J, RAY, RL, KISIEL, A, KLEIN, SR, SHAHALIEV, E, KNOSPE, AG, KOCOLOSKI, A, BELLWIED, R, MIODUSZEWSKI, S, MATULENKO, YA, KOETKE, DD, MUNHOZ, MG, KOLLEGGER, T, KONZER, J, ZOULKARNEEV, R, BHASIN, A, BRUNA, E, SHAO, M, ZHONG, C, SANCHEZ, MCD, PUJAHARI, PR, KOPYTINE, M, KORALT, I, KOROLEVA, L, KORSCH, W, NANDI, BK, KOTCHENDA, L, KOUCHPIL, V, MCDONALD, D, ROGACHEVSKIY, OV, ZOULKARNEEVA, Y, CHIKANIAN, A, HAN, LX, KRAVTSOV, P, KRUEGER, K, KRUS, M, UNDERWOOD, DG, SALUR, S, KUMAR, L, SANGALINE, E, ZHOU, J, BHATI, AK, KURNADI, P, LAMONT, MAC, HOFFMANN, GW, SHARMA, M, LANDGRAF, JM, MALL, OI, LAPOINTE, S, LAURET, J, MCSHANE, TS, BLAND, LC, LEBEDEV, A, VAN BUREN, G, NATTRASS, C, LEDNICKY, R, REED, R, SANDWEISS, J, SHI, SS, LEE, CH, LEE, JH, LEIGHT, W, CRAWFORD, HJ, CHALOUPKA, P, BICHSEL, H, LEVINE, MJ, LI, C, LI, L, WANG, G, NAYAK, TK, LI, N, LI, Z, VAN LEEUWEN, M, DAS, D, MESCHANIN, A, LI, W, LIU, F, LI, X, CHATTOPADHYAY, S, GROSNICK, D, GUPTA, A, NELSON, JM, NETRAKANTI, PK, DASH, S, ULLRICH, T, VARMA, R, GORBUNOV, YN, BONNER, BE, TLUSTY, D, NG, MJ, NOGACH, LV, WANG, H, NURUSHEV, SB, ODYNIEC, G, SELYUZHENKOV, I, SCHAMBACH, J, OGAWA, A, SHI, XH, OKADA, H, OKOROKOV, V, GORDON, A, GUPTA, N, HOFFMAN, AM, WANG, JS, HUMANIC, TJ, TIAN, J, OLSON, D, PACHR, M, PAGE, BS, BOUCHET, J, SICHTERMANN, EP, PAL, SK, PANDIT, Y, SCHARENBERG, RP, GREBENYUK, O, JUDD, EG, LU, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, CHEN, JH, VASCONCELOS, GMS, PEREVOZTCHIKOV, V, VIDEBAEK, F, GURYN, W, PERKINS, C, PERYT, W, MANWEILER, R, WANG, Q, PHATAK, SC, SAKAI, S, PILE, P, BRAIDOT, E, SCHMITZ, N, PLANINIC, M, CHEN, JY, SIMON, F, PLOSKON, MA, TRAM, VN, VASILIEV, AN, WANG, XL, PLUTA, J, PLYKU, D, POLJAK, N, JAKL, P, HAAG, B, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, LEYVA, AD, SINGARAJU, RN, PRINDLE, D, PUTSCHKE, J, CHENG, J, SCHUSTER, TR, PRUNEAU, C, REDWINE, R, BRANDIN, AV, JENA, C, PRUTHI, NK, LISA, MA, LIU, J, SKOBY, MJ, BUNZAROV, I, CHEN, HF, CHOI, KE, LIN, G, HAYS-WEHLE, JP, ZHOU, W, SMIRNOV, N, SORENSEN, P, DE SILVA, LC, SOWINSKI, J, SPINKA, HM, VIYOGI, YP, SRIVASTAVA, B, CEBRA, D, STANISLAUS, TDS, STASZAK, D, BIELCIK, J, LJUBICIC, T, MANGOTRA, LK, DEBBE, RR, BIRITZ, B, STEVENS, JR, STOCK, R, STRIKHANOV, M, HEINZ, M, WANG, Y, BURTON, TP, STRINGFELLOW, B, CATU, O, LINDENBAUM, SJ, MOHANTY, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, JONES, CL, CHRISTIE, W, SUMBERA, M, CLARKE, RF, LLOPE, WJ, SUN, XM, SUN, Y, DEDOVICH, TG, SUN, Z, VAN NIEUWENHUIZEN, G, SURROW, B, HEPPELMANN, S, VOKAL, S, SVIRIDA, DN, BETANCOURT, MJ, WEBB, G, CAI, XZ, CHUNG, P, DEPHILLIPS, M, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, MILNER, R, LONGACRE, RS, TANG, AH, TANG, Z, TARINI, LH, WEBB, JC, TARNOWSKY, T, CAINES, H, JONES, PG, VOLOSHIN, SA, THEIN, D, TOKAREV, M, HIRSCH, A, MINAEV, NG, THOMAS, JH, REHBERG, JM, WESTFALL, GD, HOFMAN, DJ, JIN, F, KABANA, S, RANIWALA, R, MA, GL, GHAZIKHANIAN, V, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, CODRINGTON, MJM, WITT, R, IGO, G, WU, Y, CENDEJAS, R, HAMED, A, RITTER, HG, SAKREJDA, I, HARRIS, JW, XIE, W, XU, N, XU, QH, MA, YG, DEREVSCHIKOV, AA, HOLLIS, RS, XU, W, HUO, L, RANIWALA, S, XU, Y, XU, Z, XUE, L, MISCHKE, A, KAJIMOTO, K, YANG, Y, KAPITAN, J, BRIDGEMAN, A, YEPES, P, YIP, K, CERVANTES, MC, CHERNEY, M, YOO, IK, MAHAPATRA, DP, CORLISS, R, YUE, Q, GUERTIN, SM, DE SOUZA, RD, HUANG, HZ, KANG, K, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, SEELE, J, ROBERTS, JB, ZHANG, S, ZHANG, WM, ZHANG, XP, DIDENKO, L, ZHANG, Y, MITROVSKI, MK, CRAMER, JG, ZHANG, ZP, ZHU, X, MAJKA, R, SEGER, J, CHAJECKI, Z, TRENTALANGE, S, DJAWOTHO, P, MARGETIS, S, MONDAL, MM, TIMMINS, AR, ROSE, A, LI, Y, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, KAUDER, K, DUNLOP, JC, MAZUMDAR, MRD, IORDANOVA, A, LOVE, WA, TRIBBLE, RE, VANFOSSEN, JA, BIELCIKOVA, J, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, ROY, C, MARKERT, C, ENGELAGE, J, MATIS, HS, TIMOSHENKO, S, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, BUELTMANN, S, MOROZOV, B, EUN, L, HJORT, E, EVDOKIMOV, O, FACHINI, P, JACOBS, P, JOSEPH, J, FATEMI, R, RUAN, L, KEANE, D, FEDORISIN, J, LIU, H, MASUI, H, MOROZOV, DA, FERSCH, RG, FILIP, P, FINCH, E, WADA, M, TSAI, OD, FINE, V, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, SEYBOTH, P, KECHECHYAN, A, GANTI, MS, GHOSH, P, SAHOO, R, WALKER, M, and JACOBS, WW
Subjects: Phi-Meson Production, Centrality Dependence, Star, Quark-Gluon Plasma, Heavy-Ion Collisions, High Energy Physics::Experiment, Phase-Transition, Relativistic Nuclear Collisions, Nuclear Experiment, Signature, Collaboration, Anisotropic Flow
Abstract: We present the results of an elliptic flow, v(2), analysis of Cu + Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at root s(NN) = 62.4 and 200 GeV. Elliptic flow as a function of transverse momentum, v(2)(p(T)), is reported for different collision centralities for charged hadrons h(+/-) and strangeness-ontaining hadrons K-S(0), Lambda, Xi, and phi in the midrapidity region vertical bar eta vertical bar < 1.0. Significant reduction in systematic uncertainty of the measurement due to nonflow effects has been achieved by correlating particles at midrapidity, vertical bar eta vertical bar < 1.0, with those at forward rapidity, 2.5 < vertical bar eta vertical bar < 4.0. We also present azimuthal correlations in p + p collisions at root s = 200 GeV to help in estimating nonflow effects. To study the system-size dependence of elliptic flow, we present a detailed comparison with previously published results from Au + Au collisions at root s(NN) = 200 GeV. We observe that v(2)(p(T)) of strange hadrons has similar scaling properties as were first observed in Au + Au collisions, that is, (i) at low transverse momenta, p(T) < 2 GeV/c, v(2) scales with transverse kinetic energy, m(T) - m, and (ii) at intermediate p(T), 2 < p(T) < 4 GeV/c, it scales with the number of constituent quarks, n(q.) We have found that ideal hydrodynamic calculations fail to reproduce the centrality dependence of v(2)(p(T)) for K-S(0) and Lambda. Eccentricity scaled v(2) values, v(2)/epsilon, are larger in more central collisions, suggesting stronger collective flow develops in more central collisions. The comparison with Au + Au collisions, which go further in density, shows that v(2)/epsilon depends on the system size, that is, the number of participants N-part. This indicates that the ideal hydrodynamic limit is not reached in Cu + Cu collisions, presumably because the assumption of thermalization is not attained.
Published: 2010

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

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

3. Identified particle production, azimuthal anisotropy, and interferometry measurements in Au plus Au collisions at root s(NN)=9.2 GeV

Author: Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Balewski, J., Barannikova, O., Barnby, L. S., Baumgart, S., Beavis, D. R., Bellwied, R., Benedosso, F., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L. C., Bnzarov, I., Bonner, B. E., Bouchet, J., Braidot, E., Brandin, A. V., Bridgeman, A., Bruna, E., Bueltmann, S., Burton, T. P., Cai, X. Z., Caines, H., Sanchez, M. C. D., Catu, O., Cebra, D., Cendejas, R., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, P., Clarke, R. F., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., De Silva, L. C., Debbe, R. R., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, R. D., Didenko, L., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Dunlop, J. C., Mazumdar, M. R. D., Efimov, L. G., Elhalhuli, E., Elnimr, M., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Ganti, M. S., Garcia-Solis, E. J., Geromitsos, A., Geurts, F., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T. J., Hamed, A., Han, L. X., Harris, J. W., Hays-Wehle, J. P., Heinz, M., Heppelmann, S., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Huang, H. Z., Humanic, T. J., Huo, L., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jena, C., Jin, F., Jones, C. L., Jones, P. G., Joseph, J., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kauder, K., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Y., Kikola, D. P., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Konzer, J., Kopytine, M., Koralt, I., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Kravtsov, V. I., Krueger, K., Krus, M., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, C. H., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, N., Li, Y., Li, Z., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Ma, G. L., Ma, Y. G., Mahapatra, D. P., Majka, R., Mall, O. I., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., Matulenko, Y. A., McDonald, D., McShane, T. S., Meschanin, A., Milner, R., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitrovski, M. K., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Page, B. S., Pal, S. K., Pandit, Y., Panebratsev, Y., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Pile, P., Planinic, M., Ploskon, M. A., Pluta, J., Plyku, D., Poljak, N., Poskanzer, A. M., Potukuchi, Bvks, Prindle, D., Pruneau, C., Pruthi, N. K., Pujahari, P. R., Putschke, J., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Rehberg, J. M., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Sahoo, R., Sakai, S., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Schambach, J., Scharenberg, R. P., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Selyuzhenkov, I., Seyboth, P., Shahaliev, E., Shao, M., Sharma, M., Shi, S. S., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Sorensen, P., Sowinski, J., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Staszak, D., Stephans, G. S. F., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Symons, T. J. M., de Toledo, A. S., Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tlusty, D., Tokarev, M., Trainor, T. A., Tram, V. N., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, J. A., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Videbaek, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xie, W., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yepes, P., Yip, K., Yoo, I. K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zhou, W., Zhu, X., Zhu, Y. H., Zoulkarneev, R., and Zoulkarneeva, Y.
Subjects: Pion Interferometry, Coulomb Corrections, Nuclear Theory, Time Projection Chamber, Quark-Gluon Plasma, Finite-Temperature, Heavy-Ion Collisions, High Energy Physics::Experiment, Relativistic Nuclear Collisions, Resistive Plate Chambers, Nuclear Experiment, Hadron-Production, Qcd Phase-Transition
Abstract: We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au + Au collisions below the nominal injection energy at the BNL Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance solenoidal tracker at RHIC (STAR) detector at root s(NN) = 9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density dN/dy in rapidity y, average transverse momentum < p(T)>, particle ratios, elliptic flow, and Hanbury-Brown-Twiss (HBT) radii are consistent with the corresponding results at similar root s(NN) from fixed-target experiments. Directed flow measurements are presented for both midrapidity and forward-rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, < p(T)>, and particle ratios are discussed. These results also demonstrate that the capabilities of the STAR detector, although optimized for root s(NN) = 200 GeV, are suitable for the proposed QCD critical-point search and exploration of the QCD phase diagram at RHIC.
Published: 2010
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4. Longitudinal scaling property of the charge balance function in Au plus Au collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, BEAVIS, DR, BELLWIED, R, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BIRITZ, B, BLAND, LC, BONNER, BE, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRIDGEMAN, A, BRUNA, E, BUELTMANN, S, BUNZAROV, I, BURTON, TP, CAI, XZ, CAINES, H, SANCHEZ, MCD, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, P, CLARKE, RF, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DUNLOP, JC, MAZUMDAR, MRD, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, EVDOKIMOV, O, FACHINI, P, FATEMI, R, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HAMED, A, HAN, LX, HARRIS, JW, HAYS-WEHLE, JP, HEINZ, M, HEPPELMANN, S, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, B, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, KEANE, D, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KOPYTINE, M, KORALT, I, KOROLEVA, L, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, ZM, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, LS, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUO, X, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITROVSKI, MK, MOHANTY, B, MONDAL, MM, MOROZOV, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, Q, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, YF, XIE, W, XU, N, XU, QH, XU, W, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, J, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, J, ZHONG, C, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, and ZOULKARNEEVA, Y
Subjects: Charge Balance Function, Boost-Invariance, Pairs, Nucleus-Nucleus Collisions, Longitudinal Scaling, E&E Annihilation, Jets, Events, Heavy-Ion Collisions, Particle, Transverse-Momentum
Abstract: We present measurements of the charge balance function, from the charged particles, for diverse pseudorapidity and transverse momentum ranges in Au + Au collisions at root S(NN) = 200 GeV using the STAR detector at RHIC. We observe that the balance function is boost-invariant within the pseudorapidity coverage vertical bar-1.3, 1.3 vertical bar. The balance function properly scaled by the width of the observed pseudorapidity window does not depend on the position or size of the pseudorapidity window. This scaling property also holds for particles in different transverse momentum ranges. In addition, we find that the width of the balance function decreases monotonically with increasing transverse momentum for all centrality classes. .
Published: 2010

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

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

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, BEAVIS, DR, BELLWIED, R, BENEDOSSO, F, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BIRITZ, B, BLAND, LC, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRUNA, E, BUELTMANN, S, BURTON, TP, BYSTERSKY, M, CAI, XZ, CAINES, H, SANCHEZ, MCD, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CLARKE, RF, CODRINGTON, MJM, CORLISS, R, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE SILVA, LC, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, I, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, N, LI, C, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, MA, GL, MA, YG, MAHAPATRAM, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, ER, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAR, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WALKER, M, WANG, F, WANG, G, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, XU, Y, XU, Z, YANG, Y, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, and ZUO, JX
Subjects: Suppression, Parton Energy Loss, Relativistic Heavy-Ion Collisions, Jet Quenching, Di-Hadron Fragmentation Function, Radiative Energy-Loss, Collisions
Abstract: We present results on the system size dependence of high transverse momentum di-hadron correlations at root s(NN) = 200 GeV as measured by STAR at RHIC. Measurements in d + Au, Cu + Cu and Au + Au collisions reveal similar jet-like near-side correlation yields (correlations at small angular separation Delta phi similar to 0, Delta eta similar to 0) for all systems and centralities. Previous measurements have shown Chat the away-side (Delta phi similar to pi) yield is suppressed in heavy-ion collisions. We present measurements of the away-side Suppression as a function of transverse momentum and centrality in Cu + Cu and Au + Au collisions. The suppression is found to be similar in Cu + Cu and An + An collisions at a similar number of participants. The results are compared to theoretical calculations based on the patron quenching model and the modified fragmentation model. The observed differences between data and theory indicate that the correlated yields presented here will further constrain dynamic energy loss models and provide information about the dynamic density profile in heavy-ion collisions. (C) 2009
Published: 2010
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7. Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au plus Au Collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, BEAVIS, DR, BELLWIED, R, BENEDOSSO, F, BETANCOURT, MJ, BETTS, RR, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BIRITZ, B, BLAND, LC, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRUNA, E, BUELTMANN, S, BURTON, TP, BYSTERSKY, M, CAI, XZ, CAINES, H, SANCHEZ, MCD, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CLARKE, RF, CODRINGTON, MJM, CORLISS, R, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE SILVA, LC, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, HUO, L, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, N, LI, C, LI, Y, LIN, G, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, REDWINE, R, REED, R, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, XU, Y, XU, Z, YANG, Y, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, and ZUO, JX
Subjects: Gluon Distribution-Functions, Quark, Monte-Carlo Model, Rapidity Correlations, Strings, Large Nuclei, Sps, Fusion, Energies
Abstract: Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au + Au and p + p collisions at root s(NN) = 200 GeV. Strong short- and long-range correlations (LRC) are seen in central Au + Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short-range correlations are observed in peripheral Au + Au collisions. Both the dual parton model (DPM) and the color glass condensate (CGC) predict the existence of the long-range correlations. In the DPM, the fluctuation in the number of elementary (parton) inelastic collisions produces the LRC. In the CGC, longitudinal color flux tubes generate the LRC. The data are in qualitative agreement with the predictions of the DPM and indicate the presence of multiple parton interactions.
Published: 2009
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8. Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNSBY, LS, BAUDOT, J, BAUMGART, S, BEAVIS, DR, BELLWIED, R, BENEDOSSO, F, BETANCOURT, MJ, BETTS, RR, BHARADWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BIRITZ, B, BLAND, LC, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRAIDOT, E, BRANDIN, AV, BRUNA, E, BUELTMANN, S, BURTON, TP, BYSTERSKY, M, CAI, XZ, CAINES, H, SANCHEZ, MCD, CALLNER, J, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, SU, CLARKE, RF, CODRINGTON, MJ, COFFIN, JP, CORLISS, R, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE SILVA, C, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPLEMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKI, P, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEIGHT, W, LEVINE, MJ, LI, C, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILLNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, RYKOV, V, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAVIN, I, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, R, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WALKER, M, WANG, F, WANG, G, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, XU, N, XU, QH, XU, Y, XU, Z, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, H, ZHANG, S, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, and ZUO, JX
Subjects: Nucleus Collisions, Particle Production, Canonical Suppression, Proton-Proton Collisions, Resonances, Strangeness Enhancement, Quark-Gluon Plasma, Heavy-Ion Collisions, Conservation, Rule, Collaboration, Pp Collisions, Model
Abstract: We study the beam-energy and system-size dependence of phi meson production (using the hadronic decay mode phi -> K(+) K(-)) by comparing the new results from Cu + Cu collisions and previously reported Au + Au collisions at root s(NN) = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity (vertical bar y vertical bar < 0.5) for 0.4 < p(T) < 5 GeV/c. At a given beam energy, the transverse momentum distributions for phi mesons are observed to be similar in yield and shape for Cu + Cu and Au + Au colliding systems with similar average numbers of participating nucleons. The phi meson yields in nucleus-nucleus collisions, normalized by the average number of participating nucleons, are found to be enhanced relative to those from p + p collisions. The enhancement for phi mesons lies between strange hadrons having net strangeness = 1 (K(-) and ) and net strangeness = 2 (Xi). The enhancement for phi mesons is observed to be higher at root s(NN) = 200 GeV compared to 62.4 GeV. These observations for the produced phi(s (s) over bar) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems. (C) 2009
Published: 2009

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

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

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

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

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

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

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

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, GARCIA-SOLIS, ES, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, BAUMGART, S, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPLEMANN, S, BEAVIS, DR, HIPPOLYTE, B, HIRSCH, A, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, IGO, G, IORDANOVA, A, BELLWIED, R, JACOBS, P, JACOBS, WW, JAKL, P, JIN, F, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, BENEDOSSO, F, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, BETTS, RR, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KRUS, M, KUHN, C, BHARDWAJ, S, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEVINE, MJ, BHASIN, A, LI, C, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, BHATI, AK, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, YG, MAHAPATRA, DP, BICHSEL, H, MAJKA, R, MALL, MI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, BIELCIK, J, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, BIELCIKOVA, J, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, BIRITZ, B, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, BLAND, LC, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, BOMBARA, M, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REED, R, RIDIGER, A, RITTER, HG, BONNER, BE, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, RYKOV, V, SAHOO, R, SAKREJDA, I, BOTJE, M, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, BOUCHET, J, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, BRAIDOT, E, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, BRANDIN, AV, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, BRUNA, DETOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, BUELTMANN, S, TLUSTY, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, BURTON, TP, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, BYSTERSKY, M, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, Q, CAI, XZ, WANG, X, WANG, XL, WANG, Y, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, Y, CAINES, H, XU, N, XU, QH, XU, Y, XU, Z, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, SANCHEZ, MCD, ZHANG, H, ZHANG, S, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, CALLNER, J, ZUO, JX, CATU, O, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPDHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, SU, CLARKE, RF, CODRINGTON, MJM, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE SILVA, C, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGAHARAN, DR, and GANTI, MS
Subjects: Gluon Production, Particle-Production, Large Transverse-Momentum, Au+Au Collisions, Time Projection Chamber, Inclusive Production, Meson Production, Freeze-Out, Colored Glass, Energy Nuclear Collisions
Abstract: We present the first measurements of the rho(770)(0),K(*)(892),Delta(1232)(++),Sigma(1385), and Lambda(1520) resonances in d+Au collisions at s(NN)=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum p(T). We observe that the resonance spectra follow a generalized scaling law with the transverse mass m(T). The < p(T)> of resonances in minimum bias collisions are compared with the < p(T)> of pi,K, and p. The rho(0)/pi(-),K(*)/K(-),Delta(++)/p,Sigma(1385)/Lambda, and Lambda(1520)/Lambda ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (R(dAu)) of the rho(0),K(*), and Sigma(*) scale with the number of binary collisions (N(bin)) for p(T)> 1.2 GeV/c.
Published: 2008

13. rho(0) photoproduction in ultraperipheral relativistic heavy ion collisions at root s(NN)=200 GeV

Author: Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Bellwied, R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S. L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, A. V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, Mcdb, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., de Moura, M. M., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, R. D., Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. D., Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Guimaraes, Ksff, Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T. J., Hamed, A., Harris, J. W., He, W., Heinz, M., Henry, T. W., Hepplemann, S., Hippolyte, B., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Horner, M. J., Huang, H. Z., Hughes, E. W., Humanic, T. J., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jin, F., Jones, P. G., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Y., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Kopytine, M., Kotchenda, L., Kouchpil, V., Kowalik, K. L., Kravtsov, P., Kravtsov, V. I., Krueger, K., Kuhn, C., Kumar, A., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., Lange, S., LaPointe, S., Laue, F., Lauret, J., Lebedev, A., Lednicky, R., Lee, C. H., LeVine, M. J., Li, C., Li, Q., Li, Y., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Liu, L., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Lynn, D., Ma, G. L., Ma, J. G., Ma, Y. G., Mahapatra, D. P., Majka, R., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Matis, H. S., Matulenko, Y. A., McShane, T. S., Meschanin, A., Millane, J., Miller, M. L., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitchell, J., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Nepali, C., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Pal, S. K., Panebratsev, Y., Pavlinov, A. I., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Planinic, M., Pluta, J., Poljak, N., Porile, N., Poskanzer, A. M., Potekhin, M., Potukuchi, Bvks, Prindle, D., Pruneau, C., Pruthi, N. K., Putschke, J., Qattan, I. A., Raniwala, R., Raniwala, S., Ray, R. L., Relyea, D., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Rykov, V., Sahoo, R., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Schambach, J., Scharenberg, R. P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shi, X. H., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Snellings, R., Sorensen, P., Sowinski, J., Speltz, J., Spinka, H. M., Srivastava, B., Stadnik, A., Stanislaus, T. D. S., Staszak, D., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Z., Surrow, B., Symons, T. J. M., de Toledo, A. S., Takahashi, J., Tang, A. H., Tang, Z., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tokarev, M., Trainor, T. A., Tram, V. N., Trattner, A. L., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van der Kolk, N., van Leeuwen, M., Molen, A. M. V., Varma, R., Vasconcelos, G. M. S., Vasilevski, I. M., Vasiliev, A. N., Vernet, R., Videbaek, F., Vigdor, S. E., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Waggoner, W. T., Wang, F., Wang, G., Wang, J. S., Wang, Q., Wang, X., Wang, X. L., Wang, Y., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Wu, J., Wu, Y., Xu, N., Xu, Q. H., Xu, Z., Yepes, P., Yoo, I. K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, H., Zhang, S., Zhang, W. M., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zoulkarneev, R., Zoulkarneeva, Y., and Zuo, J. X.
Subjects: Hera, Physics, Nuclear, Complex Nuclei, Physics, Time Projection Chamber, Colliders, Diffractive Production, High Energy Physics::Experiment, Nuclear Experiment, Vector-Meson Production, Proton Scattering, Photon, Energies
Abstract: Photoproduction reactions occur when the electromagnetic field of a relativistic heavy ion interacts with another heavy ion. The STAR Collaboration presents a measurement of rho(0) and direct pi(+)pi(-) photoproduction in ultraperipheral relativistic heavy ion collisions at root s(NN) = 200 GeV. We observe both exclusive photoproduction and photoproduction accompanied by mutual Coulomb excitation. We find a coherent cross section of sigma(AuAu -> Au*Au*rho(0)) = 530 +/- 19(stat.) +/- 57(syst.) mb, in accord with theoretical calculations based on a Glauber approach, but considerably below the predictions of a color dipole model. The rho 0 transverse momentum spectrum (p(T)(2)) is fit by a double exponential curve including both coherent and incoherent coupling to the target nucleus; we find sigma(inc)/sigma(coh) = 0.29 +/- 0.03 (stat.) +/- 0.08 (syst.). The ratio of direct pi(+)pi(-) to rho(0) production is comparable to that observed in gamma(p) collisions at HERA and appears to be independent of photon energy. Finally, the measured rho(0) spin helicity matrix elements agree within errors with the expected s-channel helicity conservation.
Published: 2008

14. Forward Neutral-Pion Transverse Single-Spin Asymmetries in p plus p Collisions at s=200 GeV

Author: Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Bellwied, R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S. L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, A. V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. C. D., Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., de Moura, M. M., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, R. D., Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. D., Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gordon, A., Gos, H., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Guimaraes, Ksff, Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T. J., Hamed, A., Harris, J. W., He, W., Heinz, M., Henry, T. W., Heppelmann, S., Hippolyte, B., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Horner, M. J., Huang, H. Z., Hughes, E. W., Humanic, T. J., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jin, F., Jones, P. G., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Y., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Kopytine, M., Kotchenda, L., Kouchpil, V., Kowalik, K. L., Kravtsov, P., Kravtsov, V. I., Krueger, K., Kuhn, C., Kumar, A., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., Langdon, J., Lange, S., LaPointe, S., Laue, F., Lauret, J., Lebedev, A., Lednicky, R., Lee, C. H., LeVine, M. J., Li, C., Li, Q., Li, Y., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Liu, L., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Lynn, D., Ma, G. L., Ma, J. G., Ma, Y. G., Mahapatra, D. P., Majka, R., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Matis, H. S., Matulenko, Y. A., McShane, T. S., Meschanin, A., Millane, J., Miller, C., Miller, M. L., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitchell, J., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Nepali, C., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Pal, S. K., Panebratsev, Y., Pavlinov, A. I., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Planinic, M., Pluta, J., Poljak, N., Porile, N., Poskanzer, A. M., Potekhin, M., Potukuchi, Bvks, Prindle, D., Pruneau, C., Pruthi, N. K., Putschke, J., Qattan, I. A., Rakness, G., Raniwala, R., Raniwala, S., Ray, R. L., Relyea, D., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Rykov, V., Sahoo, R., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Schambach, J., Scharenberg, R. P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shi, X. H., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Snellings, R., Sorensen, P., Sowinski, J., Speltz, J., Spinka, H. M., Srivastava, B., Stadnik, A., Stanislaus, T. D. S., Staszak, D., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Z., Surrow, B., Symons, T. J. M., de Toledo, A. S., Takahashi, J., Tang, A. H., Tang, Z., Tarnowsky, T., Tatarowicz, J., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tokarev, M., Trainor, T. A., Tram, V. N., Trattner, A. L., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van der Kolk, N., van Leeuwen, M., Vander Molen, A. M., Varma, R., Vasconcelos, G. M. S., Vasilevski, I. M., Vasiliev, A. N., Vernet, R., Videbaek, F., Vigdor, S. E., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Waggoner, W. T., Wang, F., Wang, G., Wang, J. S., Wang, Q., Wang, X., Wang, X. L., Wang, Y., Webb, J. C., Westfall, G. D., Whitten, C. J., Wieman, H., Wissink, S. W., Witt, R., Wu, J., Wu, Y., Xu, N., Xu, Q. H., Xu, Z., Yepes, P., Yoo, I. K., Yue, Q., Zachariou, N., Zawisza, M., Zhan, W., Zhang, H., Zhang, S., Zhang, W. M., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zoulkarneev, R., Zoulkarneeva, Y., and Zuo, J. X.
Subjects: Pi-0 Production, Gev-C, Analyzing-Power, Inclusive Production, High Chi-F, Antiprotons, Polarized Proton-Beam, Hard-Scattering
Abstract: We report precision measurements of the Feynman x (x(F)) dependence, and first measurements of the transverse momentum (p(T)) dependence, of transverse single-spin asymmetries for the production of pi(0) mesons from polarized proton collisions at s=200 GeV. The x(F) dependence of the results is in fair agreement with perturbative QCD model calculations that identify orbital motion of quarks and gluons within the proton as the origin of the spin effects. Results for the p(T) dependence at fixed x(F) are not consistent with these same perturbative QCD-based calculations.
Published: 2008

15. Enhanced strange baryon production in Au+Au collisions compared to p+p at root s(NN)=200 GeV

Author: Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Bellwied, R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S. L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, A. V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, Mcdlb, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Chernev, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., de Moura, M. M., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, R. D., Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. D., Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. G., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Guimaraes, Ksff, Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T. J., Hamed, A., Harris, J. W., He, W., Heinz, M., Henry, T. W., Heppelmann, S., Hippolyte, B., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Horner, M. J., Huang, H. Z., Hughes, E. W., Humanic, T. J., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jin, F., Jones, P. G., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Y., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Kopytine, M., Kotchenda, L., Kouchpil, V., Kowalik, K. L., Kravtsov, P., Kravtsov, V. I., Krueger, K., Kuhn, C., Kumar, A., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., Lange, S., LaPointe, S., Laue, F., Lauret, J., Lebedev, A., Lednicky, R., Lee, C. H., LeVine, M. J., Li, C., Li, Q., Li, Y., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Liu, L., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Lynn, D., Ma, G. L., Ma, J. G., Ma, Y. G., Mahapatra, D. P., Majka, R., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Matis, H. S., Matulenko, Y. A., McShane, T. S., Meschanin, A., Millane, J., Miller, M. L., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitchell, J., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Nepali, C., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Pal, S. K., Panebratsev, Y., Pavlinov, A. I., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Planinic, M., Pluta, J., Poljak, N., Porile, N., Poskanzer, A. M., Potekhin, M., Potukuchi, Bvks, Prindle, D., Pruneau, C., Pruthi, N. K., Putschke, J., Qattan, I. A., Raniwala, R., Raniwala, S., Ray, R. L., Relyea, D., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Rykov, V., Sahoo, R., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Schambach, J., Scharenberg, R. P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shi, X. H., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Snellings, R., Sorensen, P., Sowinski, J., Speltz, J., Spinka, H. M., Srivastava, B., Stadnik, A., Stanislaus, T. D. S., Staszak, D., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Z., Surrow, B., Symons, T. J. M., de Toledo, A. S., Takahashi, J., Tang, A. H., Tang, Z., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tokarev, M., Trainor, T. A., Tram, V. N., Trattner, A. L., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van der Kolk, N., van Leeuwen, M., Molen, A. M. V., Varma, R., Vasconcelos, G. M. S., Vasilevski, I. M., Vasiliev, A. N., Vernet, R., Videbaek, F., Vigdor, S. E., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Waggoner, W. T., Wang, F., Wang, G., Wang, J. S., Wang, Q., Wang, X., Wang, X. L., Wang, Y., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Wu, J., Wu, Y., Xu, N., Xu, Q. H., Xu, Z., Yepes, P., Yoo, I. K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, H., Zhang, S., Zhang, W. M., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zoulkarneev, R., Zoulkarneeva, Y., and Zuo, J. X.
Subjects: D+Au Collisions, Physics, Nuclear, Large Transverse-Momentum, Nuclear Theory, Hadronic Collisions, Rapidity, Distributions, Pb-Pb Collisions, Spectra, Nuclear Experiment, Reaction Volume
Abstract: We report on the observed differences in production rates of strange and multistrange baryons in Au+Au collisions at s(NN)=200 GeV compared to p+p interactions at the same energy. The strange baryon yields in Au+Au collisions, when scaled down by the number of participating nucleons, are enhanced relative to those measured in p+p reactions. The enhancement observed increases with the strangeness content of the baryon, and it increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at the lower collision energy s(NN)=17.3 GeV. The previous observations are for the bulk production, while at intermediate p(T),1 < p(T)< 4 GeV/c, the strange baryons even exceed binary scaling from p+p yields.
Published: 2008
Full Text: View/download PDF

16. Forward Lambda production and nuclear stopping power in d+Au collisions at root s(NN)=200 GeV

Author: Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Belaga, V. V., Bellingeri-Laurikainen, A., Bellwied, R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S. L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Brandin, A. V., Bravar, A., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, Mcdlb, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., de Moura, M. M., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunin, V. B., Dunlop, J. C., Mazumdar, M. R. D., Eckardt, V., Edwards, W. R., Efimov, L. G., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gos, H., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Guimaraes, Ksff, Gupta, N., Haag, B., Hallman, T. J., Hamed, A., Harris, J. W., He, W., Heinz, M., Henry, T. W., Heppelmann, S., Hippolyte, B., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Horner, M. J., Huang, H. Z., Hughes, E. W., Humanic, T. J., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jia, F., Jones, P. G., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Y., Kiryluk, J., Kisiel, A., Kislov, E. M., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Kopytine, M., Kotchenda, L., Kouchpil, V., Kowalik, K. L., Kravtsov, P., Kravtsov, V. I., Krueger, K., Kuhn, C., Kulikov, A. I., Kumar, A., Kurnadi, P., Kuznetsov, A. A., Lamont, M. A. C., Landgraf, J. M., Lange, S., LaPointe, S., Laue, F., Lauret, J., Lebedev, A., Lednicky, R., Lee, C. H., Lehocka, S., LeVine, M. J., Li, C., Li, Q., Li, Y., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Liu, L., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Lynn, D., Ma, G. L., Ma, J. G., Ma, Y. G., Mahapatra, D. P., Majka, R., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Martin, L., Matis, H. S., Matulenko, Y. A., McClain, C. J., McShane, T. S., Melnick, Y., Meschanin, A., Millane, J., Miller, M. L., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitchell, J., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Nepali, C., Netrakanti, P. K., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okorokov, V., Oldenburg, M., Olson, D., Pachr, M., Pal, S. K., Panebratsev, Y., Pavlinov, A. I., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Planinic, M., Pluta, J., Poljak, N., Porile, N., Poskanzer, A. M., Potekhin, M., Potrebenikova, E., Potukuchi, Bvks, Prindle, D., Pruneau, C., Pruthi, N. K., Putschke, J., Qattan, I. A., Raniwala, R., Raniwala, S., Ray, R. L., Relyea, D., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Sahoo, R., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Sazhin, P. S., Schambach, J., Scharenberg, R. P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shen, W. Q., Shimanskiy, S. S., Sichtermann, E. P., Simon, F., Singaraju, R. N., Smirnov, N., Snellings, R., Sorensen, P., Sowinski, J., Speltz, J., Spinka, H. M., Srivastava, B., Stadnik, A., Stanislaus, T. D. S., Staszak, D., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Z., Surrow, B., Symons, T. J. M., De Toledo, A. S., Takahashi, J., Tang, A. H., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Timoshenko, S., Tokarev, M., Trainor, T. A., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., Van der Kolk, N., Van Leeuwen, M., Molen, A. M. V., Varma, R., Vasilevski, I. M., Vasiliev, A. N., Vernet, R., Vigdor, S. E., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Waggoner, W. T., Wang, F., Wang, G., Wang, J. S., Wang, X. L., Wang, Y., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Wu, J., Wu, Y., Xu, N., Xu, Q. H., Xu, Z., Yepes, P., Yoo, I. K., Yue, Q., Yurevich, V. I., Zawisza, M., Zhan, W., Zhang, H., Zhang, W. M., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zoulkarneev, R., Zoulkarneeva, Y., Zubarev, A. N., and Zuo, J. X.
Subjects: Physics, Nuclear, Particle Production, Star, Nuclear Theory, Time Projection Chamber, High Energy Physics::Experiment, Deuteron, Nuclear Experiment, Model
Abstract: We report the measurement of Lambda and (Lambda) over bar yields and inverse slope parameters in d+Au collisions at root s(NN)=200 GeV at forward and backward rapidities (y=+/- 2.75), using data from the STAR forward time projection chambers. The contributions of different processes to baryon transport and particle production are probed exploiting the inherent asymmetry of the d+Au system. Comparisons to model calculations show that baryon transport on the deuteron side is consistent with multiple collisions of the deuteron nucleons with gold participants. On the gold side, HIJING-based models without a hadronic rescattering phase do not describe the measured particle yields, while models that include target remnants or hadronic rescattering do. The multichain model can provide a good description of the net baryon density in d+Au collisions at energies currently available at the BNL Relativistic Heavy Ion Collider, and the derived parameters of the model agree with those from nuclear collisions at lower energies.
Published: 2007
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16 results on '"Grube B"'

1. Charged and strange hadron elliptic flow in Cu plus Cu collisions at root s(NN)=62.4 and 200 GeV

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

3. Identified particle production, azimuthal anisotropy, and interferometry measurements in Au plus Au collisions at root s(NN)=9.2 GeV

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

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

6. System size dependence of associated yields in hadron-triggered jets STAR Collaboration

7. Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au plus Au Collisions at root s(NN)=200 GeV

8. Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions

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

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

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

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

13. rho(0) photoproduction in ultraperipheral relativistic heavy ion collisions at root s(NN)=200 GeV

14. Forward Neutral-Pion Transverse Single-Spin Asymmetries in p plus p Collisions at s=200 GeV

15. Enhanced strange baryon production in Au+Au collisions compared to p+p at root s(NN)=200 GeV

16. Forward Lambda production and nuclear stopping power in d+Au collisions at root s(NN)=200 GeV

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16 results on '"Grube B"'

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