K(892)(*) resonance production in Au+Au and p+p collisions at root s(NN)=200 GeV

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K(892)(*) resonance production in Au+Au and p+p collisions at root s(NN)=200 GeV

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Title: K(892)(*) resonance production in Au+Au and p+p collisions at root s(NN)=200 GeV
Author: ADAMS, J; AGGARWAL, MM; AHAMMED, Z; AMONETT, J; ANDERSON, BD; ARKHIPKIN, D; AVERICHEV, GS; BADYAL, SK; BAI, Y; BALEWSKI, J; BARANNIKOVA, O; GUTIERREZ, TD; HALLMAN, TJ; HAMED, A; HARDTKE, D; HARRIS, JW; HEINZ, M; HENRY, TW; HEPPLEMANN, S; HIPPOLYTE, B; HIRSCH, A; BARNBY, LS; HJORT, E; HOFFMANN, GW; HUANG, HZ; HUANG, SL; HUGHES, EW; HUMANIC, TJ; IGO, G; ISHIHARA, A; JACOBS, P; JACOBS, WW; BAUDOT, J; JANIK, M; JIANG, H; JONES, PG; JUDD, EG; KABANA, S; KANG, K; KAPLAN, M; KEANE, D; KHODYREV, VY; KIRYLUK, J; BEKELE, S; KISIEL, A; KISLOV, EM; KLAY, J; KLEIN, SR; KOETKE, DD; KOLLEGGER, T; KOPYTINE, M; KOTCHENDA, L; KRAMER, M; KRAVTSOV, P; BELAGA, VV; KRAVTSOV, VI; KRUEGER, K; KUHN, C; KULIKOV, AI; KUMAR, A; KUTUEV, RK; KUZNETSOV, AA; LAMONT, MAC; LANDGRAF, JM; LANGE, S; BELLWIED, R; LAUE, F; LAURET, J; LEBEDEV, A; LEDNICKY, R; LEHOCKA, S; LEVINE, MJ; LI, C; LI, Q; LI, Y; LIN, G; BERGER, J; LINDENBAUM, SJ; LISA, MA; LIU, F; LIU, L; LIU, QJ; LIU, Z; LJUBICIC, T; LLOPE, WJ; LONG, H; LONGACRE, RS; BEZVERKHNY, BI; LOPEZ-NORIEGA, M; LOVE, WA; LU, Y; LUDLAM, T; LYNN, D; MA, GL; MA, JG; MA, YG; MAGESTRO, D; MAHAJAN, S; BHARADWAJ, S; MAHAPATRA, DP; MAJKA, R; MANGOTRA, LK; MANWEILER, R; MARGETIS, S; MARKERT, C; MARTIN, L; MARX, JN; MATIS, HS; MATULENKO, YA; BHASIN, A; MCCLAIN, CJ; MCSHANE, TS; MEISSNER, F; MELNICK, Y; MESCHANIN, A; MILLER, ML; MINAEV, NG; MIRONOV, C; MISCHKE, A; MISHRA, DK; BHATI, AK; MITCHELL, J; MOHANTY, B; MOLNAR, L; MOORE, CF; MOROZOV, DA; MUNHOZ, MG; NANDI, BK; NAYAK, SK; NAYAK, TK; NELSON, JM; BHATIA, VS; NETRAKANTI, PK; NIKITIN, VA; NOGACH, LV; NURUSHEV, SB; ODYNIEC, G; OGAWA, A; OKOROKOV, V; OLDENBURG, M; OLSON, D; PAL, SK; BICHSEL, H; PANEBRATSEV, Y; PANITKIN, SY; PAVLINOV, AI; PAWLAK, T; PEITZMANN, T; PEREVOZTCHIKOV, V; PERKINS, C; PERYT, W; PETROV, VA; PHATAK, SC; BILLMEIER, A; PICHA, R; PLANINIC, M; PLUTA, J; PORILE, N; PORTER, J; POSKANZER, AM; POTEKHIN, M; POTREBENIKOVA, E; POTUKUCHI, BVKS; PRINDLE, D; BLAND, LC; PRUNEAU, C; PUTSCHKE, J; RAKNESS, G; RANIWALA, R; RANIWALA, S; RAVEL, O; RAY, RL; RAZIN, SV; REICHHOLD, D; REID, JG; BLYTH, CO; RENAULT, G; RETIERE, F; RIDIGER, A; RITTER, HG; ROBERTS, JB; ROGACHEVSKIY, OV; ROMERO, JL; ROSE, A; ROY, C; RUAN, L; BONNER, BE; SAHOO, R; SAKREJDA, I; SALUR, S; SANDWEISS, J; SARSOUR, M; SAVIN, I; SAZHIN, PS; SCHAMBACH, J; SCHARENBERG, RP; SCHMITZ, N; BOTJE, M; SCHWEDA, K; SEGER, J; SEYBOTH, P; SHAHALIEV, E; SHAO, M; SHAO, W; SHARMA, M; SHEN, WQ; SHESTERMANOV, KE; SHIMANSKIY, SS; BOUCHAM, A; SICHTERMANN, E; SIMON, F; SINGARAJU, RN; SKORO, G; SMIRNOV, N; SNELLINGS, R; SOOD, G; SORENSEN, P; SOWINSKI, J; SPELTZ, J; BRANDIN, AV; SPINKA, HM; SRIVASTAVA, B; STADNIK, A; STANISLAUS, TDS; STOCK, R; STOLPOVSKY, A; STRIKHANOV, M; STRINGFELLOW, B; SUAIDE, AAP; SUGARBAKER, E; BRAVAR, A; SUIRE, C; SUMBERA, M; SURROW, B; SYMONS, TJM; TOLEDO, AS; SZARWAS, P; TAI, A; TAKAHASHI, J; TANG, AH; TARNOWSKY, T; BYSTERSKY, M; THEIN, D; THOMAS, JH; TIMOSHENKO, S; TOKAREV, M; TRAINOR, TA; TRENTALANGE, S; TRIBBLE, RE; TSAI, OD; ULERY, J; ULLRICH, T; CADMAN, RV; UNDERWOOD, DG; URKINBAEV, A; VAN BUREN, G; VAN LEEUWEN, M; VANDER MOLEN, AM; VARMA, R; VASILEVSKI, IM; VASILIEV, AN; VERNET, R; VIGDOR, SE; CAI, XZ; VIYOGI, YP; VOKAL, S; VOLOSHIN, SA; VZNUZDAEV, M; WAGGONER, WT; WANG, F; WANG, G; WANG, XL; WANG, Y; WANG, ZM; CAINES, H; WARD, H; WATSON, JW; WEBB, JC; WELLS, R; WESTFALL, GD; WETZLER, A; WHITTEN , C; WIEMAN, H; WISSINK, SW; WITT, R; SANCHEZ, MCDL; WOOD, J; WU, J; XU, N; XU, Z; XU, ZZ; YAMAMOTO, E; YEPES, P; YUREVICH, VI; ZANEVSKY, YV; ZHANG, H; CASTILLO, J; ZHANG, WM; ZHANG, ZP; ZOULKARNEEV, R; ZOULKARNEEVA, Y; ZUBAREV, AN; CEBRA, D; CHAJECKI, Z; CHALOUPKA, P; CHATTOPADHYAY, S; CHEN, HF; CHEN, Y; CHENG, J; CHERNEY, M; CHIKANIAN, A; CHRISTIE, W; COFFIN, JP; CORMIER, TM; CRAMER, JG; CRAWFORD, HJ; DAS, D; DAS, S; DE MOURA, MM; DEREVSCHIKOV, AA; DIDENKO, L; DIETEL, T; DOGRA, SM; DONG, WJ; DONG, X; DRAPER, JE; DU, F; DUBEY, AK; DUNIN, VB; DUNLOP, JC; MAZUMDAR, MRD; ECKARDT, V; EDWARDS, WR; EFIMOV, LG; EMELIANOV, V; ENGELAGE, J; EPPLEY, G; ERAZMUS, B; ESTIENNE, M; FACHINI, P; FAIVRE, J; FATEMI, R; FEDORISIN, J; FILIMONOV, K; FILIP, P; FINCH, E; FINE, V; FISYAK, Y; FOMENKO, K; FU, J; GAGLIARDI, CA; GAILLARD, L; GANS, J; GANTI, MS; GAUDICHET, L; GEURTS, F; GHAZIKHANIAN, V; GHOSH, P; GONZALEZ, JE; GRACHOV, O; GREBENYUK, O; GROSNICK, D; GUERTIN, SM; GUO, Y; GUPTA, A
Abstract: The short-lived K(892)* resonance provides an efficient tool to probe properties of the hot and dense medium produced in relativistic heavy-ion collisions. We report measurements of K* in root s(NN)=200 GeV Au+Au and p+p collisions reconstructed via its hadronic decay channels K(892)*(0)-> K pi and K(892)*(+/-)-> K(S)(0)pi(+/-) using the STAR detector at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The K*(0) mass has been studied as a function of p(T) in minimum bias p+p and central Au+Au collisions. The K-* p(T) spectra for minimum bias p+p interactions and for Au+Au collisions in different centralities are presented. The K*/K yield ratios for all centralities in Au+Au collisions are found to be significantly lower than the ratio in minimum bias p+p collisions, indicating the importance of hadronic interactions between chemical and kinetic freeze-outs. A significant nonzero K*(0) elliptic flow (v(2)) is observed in Au+Au collisions and is compared to the K-S(0) and Lambda v(2). The nuclear modification factor of K* at intermediate p(T) is similar to that of K-S(0) but different from Lambda. This establishes a baryon-meson effect over a mass effect in the particle production at intermediate p(T) (2 < p(T)<= 4 GeV/c).
URI: http://dx.doi.org/10.1103/PhysRevC.71.064902
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16543
http://hdl.handle.net/10054/16543
Date: 2005


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