Strange particle production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:mrow></mml:math>collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn></mml:mrow></mml:math>GeV

B. I. Abelev(Yale University), J. R. Adams(University of Birmingham), M. M. Aggarwal(Panjab University), Z. Ahammed(Variable Energy Cyclotron Centre), J. Amonett(Kent State University), B. D. Anderson(Kent State University), M. Anderson(University of California, Davis), D. Arkhipkin, G. S. Averichev, Y. Bai(Utrecht University), J. Balewski(Indiana University Bloomington), O. Barannikova(University of Illinois Chicago), L. S. Barnby(University of Birmingham), J. Baudot, S. Bekele(The Ohio State University), V. V. Belaga, A. Bellingeri-Laurikainen(Laboratoire de Physique Subatomique et des Technologies Associées), R. Bellwied(Wayne State University), F. Benedosso(Utrecht University), S. Bhardwaj(University of Rajasthan), A. Bhasin(University of Jammu), A. K. Bhati(Panjab University), H. Bichsel(University of Washington), J. Bielčík(Yale University), J. Bielčíková(Yale University), L. C. Bland(Brookhaven National Laboratory), S.-L. Blyth(Lawrence Berkeley National Laboratory), B. E. Bonner(Rice University), M. Botje(Utrecht University), J. Bouchet(Laboratoire de Physique Subatomique et des Technologies Associées), A. V. Brandin(Institute of Engineering Physics), A. Bravar(Brookhaven National Laboratory), T. P. Burton(University of Birmingham), M. Bysterský(Czech Academy of Sciences, Nuclear Physics Institute), R. V. Cadman(Argonne National Laboratory), X. Z. Cai(Shanghai Institute of Applied Physics), X. Z. Cai(Yale University), M. Calderon De La Barca Sanchez(University of California, Davis), J. Castillo Castellanos(Utrecht University), O. Catu(Yale University), D. Cebra(University of California, Davis), Z. Chajęcki(The Ohio State University), P. Chaloupka(Czech Academy of Sciences, Nuclear Physics Institute), S. Chattopadhyay(Variable Energy Cyclotron Centre), H. F. Chen(University of Science and Technology of China), J. H. Chen(Shanghai Institute of Applied Physics), J. Cheng(Tsinghua University), M. Cherney(Creighton University), A. Chikanian(Yale University), W. Christie(Brookhaven National Laboratory), J. P. Coffin, T. M. Cormier(Wayne State University), M. R. Cosentino(Universidade de São Paulo), J. G. Cramer(University of Washington), H. J. Crawford(University of California, Berkeley), D. Das(Variable Energy Cyclotron Centre), Sudipta Das(Variable Energy Cyclotron Centre), S. Dash(Institute of Physics, Bhubaneshwar), M. Daugherity(The University of Texas at Austin), M. M. de Moura(Universidade de São Paulo), T. G. Dedovich, M. DePhillips(Brookhaven National Laboratory), A. A. Derevschikov(Institute for High Energy Physics), L. Didenko(Brookhaven National Laboratory), T. Dietel(Goethe University Frankfurt), P. Djawotho(Indiana University Bloomington), S. Dogra(University of Jammu), X. Dong(University of California, Los Angeles), X. Dong(University of Science and Technology of China), J. E. Draper(University of California, Davis), F. Du(Yale University), V. B. Dunin, J. C. Dunlop(Brookhaven National Laboratory), M. R. Dutta Mazumdar(Variable Energy Cyclotron Centre), V. Eckardt(Max Planck Institute for Physics), W. R. Edwards(Lawrence Berkeley National Laboratory), L. G. Efimov, В. Емелянов(Institute of Engineering Physics), J. Engelage(University of California, Berkeley), G. Eppley(Rice University), B. Erazmus(Laboratoire de Physique Subatomique et des Technologies Associées), M. Estienne, P. Fachini(Brookhaven National Laboratory), R. Fatemi(Massachusetts Institute of Technology), J. Fedorišin, K. Filimonov(Lawrence Berkeley National Laboratory), P. Filip, E. Finch(Yale University), V. Fine(Brookhaven National Laboratory), Y. Fisyak(Brookhaven National Laboratory), J. Fu(Central China Normal University), C. A. Gagliardi(Texas A&M University), L. Gaillard(University of Birmingham), M. S. Ganti(Variable Energy Cyclotron Centre), V. Ghazikhanian(University of California, Los Angeles), P. Ghosh(Variable Energy Cyclotron Centre), J. E. Gonzalez(University of California, Los Angeles), Y. G. Gorbunov(Creighton University), H. Gos(Warsaw University of Technology), O. G. Grebenyuk(Utrecht University), D. Grosnick(Valparaiso University), S. M. Guertin(University of California, Los Angeles), K. S. F. F. Guimarães(Universidade de São Paulo), A. Gupta(University of Jammu), T. D. Gutierrez(University of California, Davis), B. Haag(University of California, Davis), T. J. Hallman(Brookhaven National Laboratory), A. Hamed(Wayne State University), J. W. Harris(Yale University), W. He(Indiana University Bloomington), M. Heinz(Yale University), T. W. Henry(Texas A&M University), S. Hepplemann(Pennsylvania State University), B. Hippolyte, A. Hirsch(Purdue University West Lafayette), E. Hjort(Lawrence Berkeley National Laboratory), A. M. Hoffman(Massachusetts Institute of Technology), G. W. Hoffmann(The University of Texas at Austin), M. J. Horner(Lawrence Berkeley National Laboratory), H. Z. Huang(University of California, Los Angeles), S. Huang(University of Science and Technology of China), E. W. Hughes(California Institute of Technology), T. J. Humanic(The Ohio State University), G. Igo(University of California, Los Angeles), P. Jacobs(Lawrence Berkeley National Laboratory), W. W. Jacobs(Indiana University Bloomington), P. Jakl(Czech Academy of Sciences, Nuclear Physics Institute), Fei Jia(Institute of Modern Physics), H. Jiang(University of California, Los Angeles), Peter G. Jones(University of Birmingham), E. G. Judd(University of California, Berkeley), S. Kabana(Laboratoire de Physique Subatomique et des Technologies Associées), K. Kang(Tsinghua University), J. Kapitan(Czech Academy of Sciences, Nuclear Physics Institute), M. Kaplan(Carnegie Mellon University), D. Keane(Kent State University), A. Kechechyan, V. Yu. Khodyrev(Institute for High Energy Physics), B. C. Kim(Pusan National University), J. Kiryluk(Massachusetts Institute of Technology), A. Kisiel(Warsaw University of Technology), E. M. Kislov, S. R. Klein(Lawrence Berkeley National Laboratory), A. Kocoloski(Massachusetts Institute of Technology), D. D. Koetke(Valparaiso University), T. Kollegger(Goethe University Frankfurt), M. Kopytine(Kent State University), L. Kotchenda(Institute of Engineering Physics), V. Kouchpil(Czech Academy of Sciences, Nuclear Physics Institute), K. Kowalik(Lawrence Berkeley National Laboratory), M. Krämer(City College of New York), П. Кравцов(Institute of Engineering Physics), V. I. Kravtsov(Institute for High Energy Physics), K. Krueger(Argonne National Laboratory), C. Kuhn, A. I. Kulikov, A. Kumar(Panjab University), А. А. Кузнецов, M. A. C. Lamont(Yale University), J. M. Landgraf(Brookhaven National Laboratory), J. S. Lange(Goethe University Frankfurt), S. LaPointe(Wayne State University), F. Laue(Brookhaven National Laboratory), J. Lauret(Brookhaven National Laboratory), A. Lebedev(Brookhaven National Laboratory), R. Lednický, Chang‐Hwan Lee(Pusan National University), S. Lehocká, M. J. LeVine(Brookhaven National Laboratory), C. Li(University of Science and Technology of China), Q. Li(Wayne State University), Y. Li(Tsinghua University), G. Lin(Yale University), Xiaoyan Lin(Central China Normal University), S. J. Lindenbaum(City College of New York), M. A. Lisa(The Ohio State University), F. Liu(Central China Normal University), H. Liu(University of Science and Technology of China), Jie Liu(Rice University), L. Liu(Central China Normal University), Z. Liu(Central China Normal University), T. Ljubičić(Brookhaven National Laboratory), W. J. Llope(Rice University), H. Long(University of California, Los Angeles), R. S. Longacre(Brookhaven National Laboratory), W. A. Love(Brookhaven National Laboratory), Yu Lu(Central China Normal University), T. Ludlam(Brookhaven National Laboratory), D. Lynn(Brookhaven National Laboratory), G. L.(Shanghai Institute of Applied Physics), Y. G.(University of California, Los Angeles), Y. G.(Shanghai Institute of Applied Physics), D. Magestro(The Ohio State University), D. P. Mahapatra(Institute of Physics, Bhubaneshwar), R. Majka(Yale University), L. K. Mangotra(University of Jammu), R. Manweiler(Valparaiso University), S. Margetis(Kent State University), C. Markert(The University of Texas at Austin), L. Martin(Laboratoire de Physique Subatomique et des Technologies Associées), H. S. Matis(Lawrence Berkeley National Laboratory), Yu. A. Matulenko(Institute for High Energy Physics), C. J. McClain(Argonne National Laboratory), T. S. McShane(Creighton University), Yu. Melnick(Institute for High Energy Physics), A. Meschanin(Institute for High Energy Physics), J. Millane(Massachusetts Institute of Technology), M. L. Miller(Massachusetts Institute of Technology), N. G. Minaev(Institute for High Energy Physics), S. Mioduszewski(Texas A&M University), C. Mironov(Kent State University), A. Mischke(Utrecht University), D. K. Mishra(Institute of Physics, Bhubaneshwar), J. T. Mitchell(Rice University), B. Mohanty(Variable Energy Cyclotron Centre), L. Molnár(Purdue University West Lafayette), C. F. Moore(The University of Texas at Austin), D. A. Morozov(Institute for High Energy Physics), M. G. Munhoz(Universidade de São Paulo), B. K. Nandi(Indian Institute of Technology Bombay), C. Nattrass(Yale University), T. K. Nayak(Variable Energy Cyclotron Centre), J. M. Nelson(University of Birmingham), P. K. Netrakanti(Variable Energy Cyclotron Centre), L. V. Nogach(Institute for High Energy Physics), S. B. Nurushev(Institute for High Energy Physics), G. Odyniec(Lawrence Berkeley National Laboratory), A. Ogawa(Brookhaven National Laboratory), В. А. Окороков(Institute of Engineering Physics), M. Oldenburg(Lawrence Berkeley National Laboratory), D. Olson(Lawrence Berkeley National Laboratory), M. Pachr(Czech Academy of Sciences, Nuclear Physics Institute), S. K. Pal(Variable Energy Cyclotron Centre), Y. Panebratsev, S. Panitkin(Brookhaven National Laboratory), A. I. Pavlinov(Wayne State University), T. Pawlak(Warsaw University of Technology), T. Peitzmann(Utrecht University), V. Perevoztchikov(Brookhaven National Laboratory), C. Perkins(University of California, Berkeley), W. Peryt(Warsaw University of Technology), S. C. Phatak(Institute of Physics, Bhubaneshwar), R. Picha(University of California, Davis), M. Planinić(University of Zagreb), J. Pluta(Warsaw University of Technology), N. Poljak(University of Zagreb), N. Porile(Purdue University West Lafayette), J. Porter(University of Washington), A. M. Poskanzer(Lawrence Berkeley National Laboratory), M. Potekhin(Brookhaven National Laboratory), E. Potrebenikova, B. V. K. S. Potukuchi(University of Jammu), D. Prindle(University of Washington), C. A. Pruneau(Wayne State University), J. Putschke(Lawrence Berkeley National Laboratory), G. Rakness(Pennsylvania State University), R. Raniwala(University of Rajasthan), S. Raniwala(University of Rajasthan), R. L. Ray(The University of Texas at Austin), S. V. Razin, J. Reinnarth(Laboratoire de Physique Subatomique et des Technologies Associées), D. Relyea(California Institute of Technology), F. Retière(Lawrence Berkeley National Laboratory), A. Ridiger(Institute of Engineering Physics), H. G. Ritter(Lawrence Berkeley National Laboratory), J. B. Roberts(Rice University), O. V. Rogachevskiy, J. L. Romero(University of California, Davis), A. Rose(Lawrence Berkeley National Laboratory), C. Roy(Laboratoire de Physique Subatomique et des Technologies Associées), L. Ruan(Lawrence Berkeley National Laboratory), M. J. Russcher(Utrecht University), R. Sahoo(Institute of Physics, Bhubaneshwar), T. Sakuma(Massachusetts Institute of Technology), S. Salur(Yale University), J. Sandweiss(Yale University), M. Sarsour(Texas A&M University), P. S. Sazhin, J. Schambach(The University of Texas at Austin), R. P. Scharenberg(Purdue University West Lafayette), N. Schmitz(Max Planck Institute for Physics), K. Schweda(Lawrence Berkeley National Laboratory), J. Seger(Creighton University), I. Selyuzhenkov(Wayne State University), P. Seyboth(Max Planck Institute for Physics), A. Shabetai(Kent State University), E. Shahaliev, M. Shao(University of Science and Technology of China), M. Sharma(Panjab University), W. Q. Shen(Shanghai Institute of Applied Physics), S. S. Shimanskiy, E. P. Sichtermann(Lawrence Berkeley National Laboratory), F. Simon(Massachusetts Institute of Technology), R. N. Singaraju(Variable Energy Cyclotron Centre), N. Smirnov(Yale University), R. J. M. Snellings(Utrecht University), G. Sood(Valparaiso University), P. Sørensen(Brookhaven National Laboratory), J. Sowiński(Indiana University Bloomington), J. Speltz, H. Spinka(Argonne National Laboratory), B. Srivastava(Purdue University West Lafayette), A. Stadnik, T. D. S. Stanislaus(Valparaiso University), R. Stock(Goethe University Frankfurt), A. Stolpovsky(Wayne State University), M. Strikhanov(Institute of Engineering Physics), B. Stringfellow(Purdue University West Lafayette), A. A. P. Suaide(Universidade de São Paulo), E. Sugarbaker(The Ohio State University), M. Šumbera(Czech Academy of Sciences, Nuclear Physics Institute), Z. Sun(Institute of Modern Physics), B. Surrow(Massachusetts Institute of Technology), M. Swanger(Creighton University), T. J. M. Symons(Lawrence Berkeley National Laboratory), A. Szanto de Toledo(Universidade de São Paulo), A. Tai(University of California, Los Angeles), J. Takahashi(Universidade de São Paulo), Z. Tang(Brookhaven National Laboratory), T. Tarnowsky(Purdue University West Lafayette), D. Thein(University of California, Los Angeles), J. H. Thomas(Lawrence Berkeley National Laboratory), A. R. Timmins(University of Birmingham), S. Timoshenko(Institute of Engineering Physics), M. Tokarev, T. A. Trainor(University of Washington), S. Trentalange(University of California, Los Angeles), R. E. Tribble(Texas A&M University), O. D. Tsai(University of California, Los Angeles), J. Ulery(Purdue University West Lafayette), T. Ullrich(Brookhaven National Laboratory), D. G. Underwood(Argonne National Laboratory), G. Van Buren(Brookhaven National Laboratory), N. van der Kolk(Utrecht University), M. van Leeuwen(Lawrence Berkeley National Laboratory), A. M. Vander Molen(Michigan State University), R. Varma(Indian Institute of Technology Bombay), I. M. Vasilevski, A. N. Vasiliev(Institute for High Energy Physics), R. Vernet, S. E. Vigdor(Indiana University Bloomington), V. P. Viyogi(Institute of Physics, Bhubaneshwar), S. Vokál, S. A. Voloshin(Wayne State University), W. T. Waggoner(Creighton University), F. Wang(Purdue University West Lafayette), G. Wang(University of California, Los Angeles), J. S. Wang(Institute of Modern Physics), Xiaogang Wang(University of Science and Technology of China), Y. Wang(Tsinghua University), J. W. Watson(Kent State University), J. C. Webb(Valparaiso University), G. D. Westfall(Michigan State University), A. Wetzler(Lawrence Berkeley National Laboratory), C. Whitten(University of California, Los Angeles), H. Wieman(Lawrence Berkeley National Laboratory), S. W. Wissink(Indiana University Bloomington), R. Witt(Yale University), John Wood(University of California, Los Angeles), Ji Wu(University of Science and Technology of China), N. Xu(Lawrence Berkeley National Laboratory), Q. Xu(Lawrence Berkeley National Laboratory), N. Xu(Brookhaven National Laboratory), P. Yepes(Rice University), I.-K. Yoo(Pusan National University), V. I. Yurevich, W. Zhan(Institute of Modern Physics), H. Zhang(Brookhaven National Laboratory), Wei-Min Zhang(Kent State University), Y. Zhang(University of Science and Technology of China), Z. Zhang(University of Science and Technology of China), Y. Zhao(University of Science and Technology of China), C. Zhong(Shanghai Institute of Applied Physics), R. Zoulkarneev, Y. Zoulkarneeva, A. N. Zubarev, J. X. Zuo(Shanghai Institute of Applied Physics)
Physical Review C
June 4, 2007
10.1103/physrevc.75.064901
Cited by 368Open Access
Full Text

Abstract

We present strange particle spectra and yields measured at midrapidity in $\sqrt{s}=200$ GeV proton-proton ($p+p$) collisions at the BNL Relativistic Heavy Ion Collider (RHIC). We find that the previously observed universal transverse mass (${m}_{T}\ensuremath{\equiv}\sqrt{{{p}_{T}}^{2}+{m}^{2}}$) scaling of hadron production in $p+p$ collisions seems to break down at higher ${m}_{T}$ and that there is a difference in the shape of the ${m}_{T}$ spectrum between baryons and mesons. We observe midrapidity antibaryon to baryon ratios near unity for \ensuremath{\Lambda} and \ensuremath{\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 $\ensuremath{\langle}{p}_{T}\ensuremath{\rangle}$ 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 with previous measurements made at the CERN Super Proton Synchrotron and Intersecting Storage Rings and in Fermilab experiments and with leading-order and next-to-leading-order 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 from quark jets.

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