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Open Access Publications from the University of California

Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV

  • Author(s): Abelev, B.I.
  • Adams, J.
  • Aggarwal, M.M.
  • Ahammed, Z.
  • Amonett, J.
  • Anderson, B.D.
  • Anderson, M.
  • Arkhipkin, D.
  • Averichev, G.S.
  • Bai, Y.
  • Balewski, J.
  • Barannikova, O.
  • Barnby, L.S.
  • Baudot, J.
  • Bekele, S.
  • Belaga, V.V.
  • Bellingeri-Laurikainen, A.
  • Bellwied, R.
  • Benedosso, F.
  • Bhardwaj, S.
  • Bhasin, A.
  • Bhati, A.K.
  • Bichsel, H.
  • Bielcik, J.
  • Bielcikova, J.
  • Bland, L.C.
  • Blyth, S.-L.
  • Bonner, B.E.
  • Botje, M.
  • Bouchet, J.
  • Brandin, A.V.
  • Bravar, A.
  • Bystersky, M.
  • Cadman, R.V.
  • Cai, X.Z.
  • Caines, H.
  • Calderon de la Barca Sanchez, M.
  • Castillo, J.
  • Catu, O.
  • Cebra, D.
  • Chajecki, Z.
  • Chaloupka, P.
  • Chattopadhyay, S.
  • Chen, H.F.
  • Chen, J.H.
  • Cheng, J.
  • Cherney, M.
  • Chikanian, A.
  • Christie, W.
  • Coffin, J.P.
  • Cormier, T.M.
  • Cosentino, M.R.
  • Cramer, J.G.
  • Crawford, H.J.
  • Das, D.
  • Das, 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, W.J.
  • Dong, X.
  • Draper, J.E.
  • Du, F.
  • Dunin, V.B.
  • Dunlop, J.C.
  • Dutta Mazumdar, M.R.
  • Eckardt, V.
  • Edwards, W.R.
  • Efimov, L.G.
  • Emelianov, V.
  • Engelage, J.
  • Eppley, G.
  • Erazmus, B.
  • Estienne, M.
  • Fachini, P.
  • Fatemi, R.
  • Fedorisin, J.
  • Filimonov, K.
  • Filip, P.
  • Finch, E.
  • Fine, V.
  • Fisyak, Y.
  • Fu, J.
  • Gagliardi, C.A.
  • Gaillard, L.
  • Ganti, M.S.
  • Ghazikhanian, V.
  • Ghosh, P.
  • Gonzalez, J.S.
  • Gorbunov, Y.G.
  • Gos, H.
  • Grebenyuk, O.
  • Grosnick, D.
  • Guertin, S.M.
  • Guimaraes, K.S.F.F.
  • Guo, Y.
  • Gupta, N.
  • Gutierrez, T.D.
  • 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.
  • Horner, M.J.
  • Huang, H.Z.
  • Huang, S.L.
  • Hughes, E.W.
  • Humanic, T.J.
  • Igo, G.
  • Jacobs, P.
  • Jacobs, W.W.
  • Jakl, P.
  • Jia, F.
  • Jiang, H.
  • Jones, P.G.
  • Judd, E.G.
  • Kabana, S.
  • Kang, K.
  • Kapitan, J.
  • Kaplan, M.
  • Keane, D.
  • Kechechyan, A.
  • Khodyrev, V.Yu.
  • Kim, B.C.
  • Kiryluk, J.
  • Kisiel, A.
  • Kislov, E.M.
  • Klein, S.R.
  • Kocoloski, A.
  • Koetke, D.D.
  • Kollegger, T.
  • Kopytin, M.
  • Kotchenda, L.
  • Kouchpil, V.
  • Kowalik, K.L.
  • Kramer, M.
  • Kravtsov, P.
  • Kravtsov, V.I.
  • Krueger, K.
  • Kuhn, C.
  • Kulikov, A.I.
  • Kumar, A.
  • Kuznetsov, A.A.
  • Lamong, 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.
  • Liu, Z.
  • Ljubicic, T.
  • Llope, W.J.
  • Long, H.
  • Longarche, R.S.
  • Lopez-Noriega, M.
  • Love, W.A.
  • Lu, Y.
  • Ludlam, T.
  • Lynn, D.
  • Ma, G.L.
  • Ma, J.G.
  • Ma, Y.G.
  • Magestro, D.
  • Mahapatra, D.P.
  • Majka, R.
  • Mangotra, L.K.
  • Manweiler, R.
  • Margetis, S.
  • Markert, C.
  • Martin, L.
  • Matis, H.S.
  • Matulenko, Yu.A.
  • McClain, C.J.
  • McShane, T.S.
  • Melnick, Yu.
  • Meschanin, A.
  • Millane, J.
  • Miller, M.L.
  • Minaev, N.G.
  • Mioduszewski, S.
  • Mironov, C.
  • Mischke, A.
  • Mishra, D.K.
  • Mitchell, J.
  • Mohanty, B.
  • Molnar, L.
  • Moore, C.F.
  • Morozov, D.A.
  • Munhoz, M.G.
  • Nandi, B.K.
  • Nattrass, C.
  • Nayak, T.K.
  • Nelson, J.M.
  • Netrakanti, P.K.
  • Nikitin, V.A.
  • Nogach, L.V.
  • Nurushev, S.B.
  • Odyniec, G.
  • Ogawa, A.
  • Okorokov, V.
  • Oldenburg, M.
  • Olson, D.
  • Pachr, M.
  • Pal, S.K.
  • Panebratsev, Y.
  • Panitkin, S.Y.
  • Pavlinov, A.I.
  • Pawlak, T.
  • Peitzmann, T.
  • Perevoztchikov, V.
  • Perkins, C.
  • Peryt, W.
  • Petrov, V.A.
  • Phatak, S.C.
  • Picha, R.
  • Planinic, M.
  • Pluta, J.
  • Poljak, N.
  • Porile, N.
  • Porter, J.
  • Poskanzer, A.M.
  • Potekhin, M.
  • Potrebenikov, E.
  • Potukuchi, B.V.K.S.
  • Prindle, D.
  • Pruneau, C.
  • Putschke, J.
  • Rakness, G.
  • Raniwala, R.
  • Raniwala, S.
  • Ray, R.L.
  • Razin, S.V.
  • Reinnarth, J.
  • Relyea, D.
  • Retiere, F.
  • 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.
  • Sakuma, T.
  • Salur, S.
  • Sandweiss, J.
  • Sarsour, M.
  • Sazhin, P.S.
  • Schambach, J.
  • Scharenberg, R.P.
  • Schmitz, N.
  • Schweda, K.
  • Seger, J.
  • Selyuzhenkov, I.
  • Seyboth, P.
  • Shabetai, A.
  • Shahaliev, E.
  • Shao, M.
  • Sharma, M.
  • Shen, W.Q.
  • Shimanskiy, S.S.
  • Sichtermann, E.
  • Simon, F.
  • Singaraju, R.N.
  • Smirnov, N.
  • Snellings, R.
  • Sood, G.
  • Sorensen, P.
  • Sowinski, J.
  • Speltz, J.
  • Spinka, H.M.
  • Srivastava, B.
  • Stadnik, A.
  • Stanislaus, T.D.S.
  • Stock, R.
  • Stolpovsky, A.
  • Strikhanov, M.
  • Stringfellow, B.
  • Suaide, A.A.P.
  • Sugarbaker, E.
  • Sumbera, M.
  • Sun, Z.
  • Surrow, B.
  • Swager, M.
  • Symons, T.J.M.
  • Szanto de Toledo, A.
  • Tai, A.
  • Takahaski, J.
  • Tang, A.H.
  • Tarnowsky, T.
  • Thein, D.
  • 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.
  • Vander Molen, A.M.
  • Varma, R.
  • Vasilevski, I.M.
  • Vasiliev, A.N.
  • Vernet, R.
  • Vigdor, S.E.
  • Viyogi, Y.P.
  • Vokal, S.
  • Voloshin, S.A.
  • Waggoner, W.T.
  • Wang, F.
  • Wang, G.
  • Wang, J.S.
  • Wang, X.L.
  • Wang, Y.
  • Watson, J.W.
  • Webb, J.C.
  • Westfall, G.D.
  • Wetzler, A.
  • Whitten Jr., C.
  • Wieman, H.
  • Wissink, S.W.
  • Witt, R.
  • Wood, J.
  • Wu, J.
  • Xu, N.
  • Xu, Q.L.
  • Xu, Z.
  • Yepes, P.
  • Yoo, I.-K.
  • Yurevich, V.I.
  • Zhan, W.
  • Zhang, H.
  • Zhang, W.M.
  • Zhang, Y.
  • Zhang, Z.P.
  • Zhao, Y.
  • Zhong, C.
  • Zoulkarneev, R.
  • Zoulkarneeva, Y.
  • Zubarev, A.N.
  • Zuo, J.X.
  • et al.
Abstract

We present strange particle spectra and yields measured at mid-rapidity in sqrt text s=200 GeV proton-proton (p+p) collisions at RHIC. We find that the previously observed universal transverse mass (mathrm mT \equiv\sqrt mathrm p_T 2+\mathrm m2) scaling of hadron production in p+p collisions seems to break down at higher \mt and that there is a difference in the shape of the \mt spectrum between baryons and mesons. We observe mid-rapidity anti-baryon to baryon ratios near unity for Lambda and Xi baryons and no dependence of the ratio on transverse momentum, indicating that our data do not yet reach the quark-jet dominated region. We show the dependence of the mean transverse momentum (\mpt) on measured charged particle multiplicity and on particle mass and infer that these trends are consistent with gluon-jet dominated particle production. The data are compared to previous measurements from CERN-SPS, ISR and FNAL experiments and to Leading Order (LO) and Next to Leading order (NLO) string fragmentation model predictions. We infer from these comparisons that the spectral shapes and particle yields from $p+p$ collisions at RHIC energies have large contributions from gluon jets rather than quark jets.

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