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High pT nonphotonic electron production in p+p collisions at s=200  GeV

H. Agakishiev17, M. M. Aggarwal29, Z. Ahammed21, A. V. Alakhverdyants17, I. Alekseev15, J. Alford18, B. D. Anderson18, C. D. Anson27, D. Arkhipkin2 et al. (STAR Collaboration)

D. Arkhipkin2, G. S. Averichev17, J. Balewski22, D. R. Beavis2, N. K. Behera13, R. Bellwied43, M. J. Betancourt22, R. R. Betts7, A. Bhasin16, A. K. Bhati29, H. Bichsel49, J. Bielcik9, J. Bielcikova10, B. Biritz5, L. C. Bland2, I. G. Bordyuzhin15, W. Borowski40, J. Bouchet18, E. Braidot26, A. V. Brandin25, A. Bridgeman1, S. G. Brovko4, E. Bruna52, S. Bueltmann28, I. Bunzarov17, T. P. Burton2, X. Z. Cai39, H. Caines52, M. Calderón de la Barca Sánchez4, D. Cebra4, R. Cendejas5, M. C. Cervantes41, Z. Chajecki27, P. Chaloupka10, S. Chattopadhyay47, H. F. Chen37, J. H. Chen39, J. Y. Chen51, L. Chen51, J. Cheng44, M. Cherney8, A. Chikanian52, K. E. Choi33, W. Christie2, P. Chung10, M. J. M. Codrington41, R. Corliss22, J. G. Cramer49, H. J. Crawford3, S. Dash12, A. Davila Leyva42, L. C. De Silva43, R. R. Debbe2, T. G. Dedovich17, A. A. Derevschikov31, R. Derradi de Souza6, L. Didenko2, P. Djawotho41, S. M. Dogra16, X. Dong21, J. L. Drachenberg41, J. E. Draper4, J. C. Dunlop2, L. G. Efimov17, M. Elnimr50, J. Engelage3, G. Eppley35, M. Estienne40, L. Eun30, O. Evdokimov7, R. Fatemi19, J. Fedorisin17, R. G. Fersch19, P. Filip17, E. Finch52, V. Fine2, Y. Fisyak2, C. A. Gagliardi41, D. R. Gangadharan5, A. Geromitsos40, F. Geurts35, P. Ghosh47, Y. N. Gorbunov8, A. Gordon2, O. G. Grebenyuk21, D. Grosnick46, S. M. Guertin5, A. Gupta16, W. Guryn2, B. Haag4, O. Hajkova9, A. Hamed41, L-X. Han39, J. W. Harris52, J. P. Hays-Wehle22, M. Heinz52, S. Heppelmann30, A. Hirsch32, E. Hjort21, G. W. Hoffmann42, D. J. Hofman7, B. Huang37, H. Z. Huang5, T. J. Humanic27, L. Huo41, G. Igo5, P. Jacobs21, W. W. Jacobs14, C. Jena12, F. Jin39, J. Joseph18, E. G. Judd3, S. Kabana40, K. Kang44, J. Kapitan10, K. Kauder7, H. W. Ke51, D. Keane18, A. Kechechyan17, D. Kettler49, D. P. Kikola21, J. Kiryluk21, A. Kisiel48, V. Kizka17, S. R. Klein21, A. G. Knospe52, D. D. Koetke46, T. Kollegger11, J. Konzer32, I. Koralt28, L. Koroleva15, W. Korsch19, L. Kotchenda25, V. Kouchpil10, P. Kravtsov25, K. Krueger1, M. Krus9, L. Kumar18, P. Kurnadi5, M. A. C. Lamont2, J. M. Landgraf2, S. LaPointe50, J. Lauret2, A. Lebedev2, R. Lednicky17, J. H. Lee2, W. Leight22, M. J. LeVine2, C. Li37, L. Li42, N. Li51, W. Li39, X. Li32, X. Li38, Y. Li44, Z. M. Li51, M. A. Lisa27, F. Liu51, H. Liu4, J. Liu35, T. Ljubicic2, W. J. Llope35, R. S. Longacre2, W. A. Love2, Y. Lu37, E. V. Lukashov25, X. Luo37, G. L. Ma39, Y. G. Ma39, D. P. Mahapatra12, R. Majka52, O. I. Mall4, L. K. Mangotra16, R. Manweiler46, S. Margetis18, C. Markert42, H. Masui21, H. S. Matis21, Yu. A. Matulenko31, D. McDonald35, T. S. McShane8, A. Meschanin31, R. Milner22, N. G. Minaev31, S. Mioduszewski41, A. Mischke26, M. K. Mitrovski11, Y. Mohammed41, B. Mohanty47, M. M. Mondal47, B. Morozov15, D. A. Morozov31, M. G. Munhoz36, M. K. Mustafa32, M. Naglis21, B. K. Nandi13, T. K. Nayak47, P. K. Netrakanti32, L. V. Nogach31, S. B. Nurushev31, G. Odyniec21, A. Ogawa2, K. Oh33, A. Ohlson52, V. Okorokov25, E. W. Oldag42, D. Olson21, M. Pachr9, B. S. Page14, S. K. Pal47, Y. Pandit18, Y. Panebratsev17, T. Pawlak48, H. Pei7, T. Peitzmann26, C. Perkins3, W. Peryt48, S. C. Phatak12, P. Pile2, M. Planinic53, M. A. Ploskon21, J. Pluta48, D. Plyku28, N. Poljak53, A. M. Poskanzer21, B. V. K. S. Potukuchi16, C. B. Powell21, D. Prindle49, C. Pruneau50, N. K. Pruthi29, P. R. Pujahari13, J. Putschke52, H. Qiu20, R. Raniwala34, S. Raniwala34, R. L. Ray42, R. Redwine22, R. Reed4, H. G. Ritter21, J. B. Roberts35, O. V. Rogachevskiy17, J. L. Romero4, A. Rose21, L. Ruan2, J. Rusnak10, N. R. Sahoo47, S. Sakai21, I. Sakrejda21, S. Salur4, J. Sandweiss52, E. Sangaline4, A. Sarkar13, J. Schambach42, R. P. Scharenberg32, A. M. Schmah21, N. Schmitz23, T. R. Schuster11, J. Seele22, J. Seger8, I. Selyuzhenkov14, P. Seyboth23, E. Shahaliev17, M. Shao37, M. Sharma50, S. S. Shi51, Q. Y. Shou39, E. P. Sichtermann21, F. Simon23, R. N. Singaraju47, M. J. Skoby32, N. Smirnov52, P. Sorensen2, H. M. Spinka1, B. Srivastava32, T. D. S. Stanislaus46, D. Staszak5, S. G. Steadman22, J. R. Stevens14, R. Stock11, M. Strikhanov25, B. Stringfellow32, A. A. P. Suaide36, M. C. Suarez7, N. L. Subba18, M. Sumbera10, X. M. Sun21, Y. Sun37, Z. Sun20, B. Surrow22, D. N. Svirida15, T. J. M. Symons21, A. Szanto de Toledo36, J. Takahashi6, A. H. Tang2, Z. Tang37, L. H. Tarini50, T. Tarnowsky24, D. Thein42, J. H. Thomas21, J. Tian39, A. R. Timmins43, D. Tlusty10, M. Tokarev17, T. A. Trainor49, V. N. Tram21, S. Trentalange5, R. E. Tribble41, P. Tribedy47, O. D. Tsai5, T. Ullrich2, D. G. Underwood1, G. Van Buren2, G. van Nieuwenhuizen22, J. A. Vanfossen, Jr.18, R. Varma13, G. M. S. Vasconcelos6, A. N. Vasiliev31, F. Videbæk2, Y. P. Viyogi47, S. Vokal17, S. A. Voloshin50, M. Wada42, M. Walker22, F. Wang32, G. Wang5, H. Wang24, J. S. Wang20, Q. Wang32, X. L. Wang37, Y. Wang44, G. Webb19, J. C. Webb2, G. D. Westfall24, C. Whitten, Jr.5, H. Wieman21, S. W. Wissink14, R. Witt45, W. Witzke19, Y. F. Wu51, Z. Xiao44, W. Xie32, H. Xu20, N. Xu21, Q. H. Xu38, W. Xu5, Y. Xu37, Z. Xu2, L. Xue39, Y. Yang20, Y. Yang51, P. Yepes35, K. Yip2, I-K. Yoo33, M. Zawisza48, H. Zbroszczyk48, W. Zhan20, J. B. Zhang51, S. Zhang39, W. M. Zhang18, X. P. Zhang44, Y. Zhang21, Z. P. Zhang37, J. Zhao39, C. Zhong39, W. Zhou38, X. Zhu44, Y. H. Zhu39, R. Zoulkarneev17, and Y. Zoulkarneeva17 (STAR Collaboration)

  • 1Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 2Brookhaven National Laboratory, Upton, New York 11973, USA
  • 3University of California, Berkeley, California 94720, USA
  • 4University of California, Davis, California 95616, USA
  • 5University of California, Los Angeles, California 90095, USA
  • 6Universidade Estadual de Campinas, Sao Paulo, Brazil
  • 7University of Illinois at Chicago, Chicago, Illinois 60607, USA
  • 8Creighton University, Omaha, Nebraska 68178, USA
  • 9Czech Technical University in Prague, FNSPE, Prague, 115 19, Czech Republic
  • 10Nuclear Physics Institute AS CR, 250 68 Řež/Prague, Czech Republic
  • 11University of Frankfurt, Frankfurt, Germany
  • 12Institute of Physics, Bhubaneswar 751005, India
  • 13Indian Institute of Technology, Mumbai, India
  • 14Indiana University, Bloomington, Indiana 47408, USA
  • 15Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia
  • 16University of Jammu, Jammu 180001, India
  • 17Joint Institute for Nuclear Research, Dubna, 141 980, Russia
  • 18Kent State University, Kent, Ohio 44242, USA
  • 19University of Kentucky, Lexington, Kentucky 40506-0055, USA
  • 20Institute of Modern Physics, Lanzhou, China
  • 21Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 22Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
  • 23Max-Planck-Institut für Physik, Munich, Germany
  • 24Michigan State University, East Lansing, Michigan 48824, USA
  • 25Moscow Engineering Physics Institute, Moscow, Russia
  • 26NIKHEF and Utrecht University, Amsterdam, The Netherlands
  • 27Ohio State University, Columbus, Ohio 43210, USA
  • 28Old Dominion University, Norfolk, Virginia 23529, USA
  • 29Panjab University, Chandigarh 160014, India
  • 30Pennsylvania State University, University Park, Pennsylvania 16802, USA
  • 31Institute of High Energy Physics, Protvino, Russia
  • 32Purdue University, West Lafayette, Indiana 47907, USA
  • 33Pusan National University, Pusan, Republic of Korea
  • 34University of Rajasthan, Jaipur 302004, India
  • 35Rice University, Houston, Texas 77251, USA
  • 36Universidade de Sao Paulo, Sao Paulo, Brazil
  • 37University of Science & Technology of China, Hefei 230026, China
  • 38Shandong University, Jinan, Shandong 250100, China
  • 39Shanghai Institute of Applied Physics, Shanghai 201800, China
  • 40SUBATECH, Nantes, France
  • 41Texas A&M University, College Station, Texas 77843, USA
  • 42University of Texas, Austin, Texas 78712, USA
  • 43University of Houston, Houston, Texas 77204, USA
  • 44Tsinghua University, Beijing 100084, China
  • 45United States Naval Academy, Annapolis, Maryland 21402, USA
  • 46Valparaiso University, Valparaiso, Indiana 46383, USA
  • 47Variable Energy Cyclotron Centre, Kolkata 700064, India
  • 48Warsaw University of Technology, Warsaw, Poland
  • 49University of Washington, Seattle, Washington 98195, USA
  • 50Wayne State University, Detroit, Michigan 48201, USA
  • 51Institute of Particle Physics, CCNU (HZNU), Wuhan 430079, China
  • 52Yale University, New Haven, Connecticut 06520, USA
  • 53University of Zagreb, Zagreb, HR-10002, Croatia

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Phys. Rev. D 83, 052006 – Published 22 March, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.052006

Abstract

We present the measurement of nonphotonic electron production at high transverse momentum (pT>2.5  GeV/c) in p+p collisions at s=200  GeV using data recorded during 2005 and 2008 by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The measured cross sections from the two runs are consistent with each other despite a large difference in photonic background levels due to different detector configurations. We compare the measured nonphotonic electron cross sections with previously published RHIC data and perturbative quantum chromodynamics calculations. Using the relative contributions of B and D mesons to nonphotonic electrons, we determine the integrated cross sections of electrons (e++e−2) at 3  GeV/c<pT<10  GeV/c from bottom and charm meson decays to be [(dσ(B→e)+(B→D→e))/(dye)]ye=0=4.0±0.5(stat)±1.1(syst)  nb and [(dσD→e)/(dye)]ye=0=6.2±0.7(stat)±1.5(syst)  nb, respectively.

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Phys. Rev. D 83, 052006– Published 22 March, 2011
  • Received 13 February 2011
Article part of CHORUS

© 2011 American Physical Society

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