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Identified hadron spectra at large transverse momentum in p + p and d + Au collisions at sqrt(sNN) = 200  GeV

  • J. Adams
  • , M. M. Aggarwal
  • , Z. Ahammed
  • , J. Amonett
  • , B. D. Anderson
  • , M. Anderson
  • , D. Arkhipkin
  • , G. S. Averichev
  • , S. K. Badyal
  • , Y. Bai
  • , J. Balewski
  • , O. Barannikova
  • , L. S. Barnby
  • , J. Baudot
  • , S. Bekele
  • , V. V. Belaga
  • , A. Bellingeri-Laurikainen
  • , R. Bellwied
  • , B. I. Bezverkhny
  • , S. Bharadwaj
    • A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, A. Billmeier, L. C. Bland, C. O. Blyth, S. L. Blyth, B. E. Bonner, M. Botje, J. Bouchet, A. V. Brandin, A. Bravar, M. Bystersky, R. V. Cadman, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Castillo, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, Y. Chen, J. Cheng, M. Cherney, A. Chikanian, H. A. Choi, W. Christie, J. P. Coffin, T. M. Cormier, M. R. Cosentino, J. G. Cramer, H. J. Crawford, D. Das, S. Das, M. Daugherity, M. M. de Moura, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, L. Didenko, T. Dietel, P. Djawotho, S. M. Dogra, W. J. Dong, X. Dong, J. E. Draper, F. Du, V. B. Dunin, J. C. Dunlop, M. R. Dutta Mazumdar, V. Eckardt, W. R. Edwards, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, R. Fatemi, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, V. Fine, Y. Fisyak, K. S.F. Fornazier, J. Fu, C. A. Gagliardi, L. Gaillard, J. Gans, M. S. Ganti, V. Ghazikhanian, P. Ghosh, J. E. Gonzalez, Y. G. Gorbunov, H. Gos, O. Grachov, O. Grebenyuk, D. Grosnick, S. M. Guertin, Y. Guo, A. Gupta, N. Gupta, T. D. Gutierrez, B. Haag, T. J. Hallman, A. Hamed, J. W. Harris, W. He, M. Heinz, T. W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, G. W. Hoffmann, M. J. Horner, H. Z. Huang, S. L. Huang, E. W. Hughes, T. J. Humanic, G. Igo, P. Jacobs, W. W. Jacobs, P. Jakl, F. Jia, H. Jiang, P. G. Jones, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, V. Yu Khodyrev, B. C. Kim, J. Kiryluk, A. Kisiel, E. M. Kislov, S. R. Klein, D. D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K. L. Kowalik, M. Kramer, P. Kravtsov, V. I. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, A. Kumar, A. A. Kuznetsov, M. A.C. Lamont, J. M. Landgraf, S. Lange, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C. H. Lee, S. Lehocka, M. J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, Z. Liu, T. Ljubicic, W. J. Llope, H. Long, R. S. Longacre, M. Lopez-Noriega, W. A. Love, Y. Lu, T. Ludlam, D. Lynn, G. L. Ma, J. G. Ma, Y. G. Ma, D. Magestro, S. Mahajan, D. P. Mahapatra, R. Majka, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, H. S. Matis, Yu A. Matulenko, C. J. McClain, T. S. McShane, Yu Melnick, A. Meschanin, M. L. Miller, N. G. Minaev, S. Mioduszewski, C. Mironov, A. Mischke, D. K. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C. F. Moore, D. A. Morozov, M. G. Munhoz, B. K. Nandi, S. K. Nayak, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, V. A. Nikitin, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, M. Pachr, S. K. Pal, Y. Panebratsev, S. Y. Panitkin, A. I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, V. A. Petrov, S. C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Poljak, N. Porile, J. Porter, A. M. Poskanzer, M. Potekhin, E. Potrebenikova, B. V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rakness, R. Raniwala, S. Raniwala, R. L. Ray, S. V. Razin, J. Reinnarth, D. Relyea, F. Retiere, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, M. Sarsour, I. Savin, P. S. Sazhin, J. Schambach, R. P. Scharenberg, N. Schmitz, K. Schweda, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, W. Q. Shen, S. S. Shimanskiy, E. Sichtermann, F. Simon, R. N. Singaraju, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, J. Speltz, H. M. Spinka, B. Srivastava, A. Stadnik, T. D.S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, A. A.P. Suaide, E. Sugarbaker, M. Sumbera, Z. Sun, B. Surrow, M. Swanger, T. J.M. Symons, A. Szanto de Toledo, A. Tai, J. Takahashi, A. H. Tang, T. Tarnowsky, D. Thein, J. H. Thomas, A. R. Timmins, S. Timoshenko, M. Tokarev, T. A. Trainor, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, N. van der Kolk, M. van Leeuwen, A. M. Vander Molen, R. Varma, I. M. Vasilevski, A. N. Vasiliev, R. Vernet, S. E. Vigdor, Y. P. Viyogi, S. Vokal, S. A. Voloshin, W. T. Waggoner, F. Wang, G. Wang, J. S. Wang, X. L. Wang, Y. Wang, J. W. Watson, J. C. Webb, G. D. Westfall, A. Wetzler, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Q. H. Xu, Z. Xu, P. Yepes, I. K. Yoo, V. I. Yurevich, I. Zborovsky, W. Zhan, H. Zhang, W. M. Zhang, Y. Zhang, Z. P. Zhang, Y. Zhao, C. Zhong, R. Zoulkarneev, Y. Zoulkarneeva, A. N. Zubarev, J. X. Zuo
  • University of Birmingham
  • Panjab University
  • Variable Energy Cyclotron Centre India
  • Kent State University
  • University of California at Davis
  • Joint Institute for Nuclear Research
  • University of Jammu
  • Utrecht University
  • Indiana University Bloomington
  • Purdue University
  • Institut de Recherches Subatomiques
  • Ohio State University
  • SUBATECH
  • Wayne State University
  • Yale University
  • University of Rajasthan
  • University of Washington
  • Brookhaven National Laboratory
  • Lawrence Berkeley National Laboratory
  • Rice University
  • Moscow Engineering Physics Institute
  • Czech Academy of Sciences
  • Argonne National Laboratory
  • Chinese Academy of Sciences
  • University of Science and Technology of China
  • University of California at Los Angeles
  • Tsinghua University
  • Creighton University
  • Pusan National University
  • Universidade de São Paulo
  • University of California at Berkeley
  • University of Texas at Austin
  • Institute for High Energy Physics
  • Goethe University Frankfurt
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Massachusetts Institute of Technology
  • Central China Normal University
  • Texas A&M University
  • Warsaw University of Technology
  • Valparaiso University
  • Pennsylvania State University
  • California Institute of Technology
  • CAS - Institute of Modern Physics
  • Carnegie Mellon University
  • City University of New York
  • Institute of Physics Bhubaneswar
  • Indian Institute of Technology Bombay
  • University of Zagreb
  • Michigan State University

Research output: Contribution to journal › Article › peer-review

286 Scopus citations

Abstract

We present the transverse momentum ( pT) spectra for identified charged pions, protons and anti-protons from p + p and d + Au collisions at sqrt(sNN) = 200   GeV. The spectra are measured around midrapidity ( | y | < 0.5) over the range of 0.3 < pT < 10   GeV / c with particle identification from the ionization energy loss and its relativistic rise in the time projection chamber and time-of-flight in STAR. The charged pion and proton + anti-proton spectra at high pT in p + p and d + Au collisions are in good agreement with a phenomenological model (EPOS) and with next-to-leading order perturbative quantum chromodynamic (NLO pQCD) calculations with a specific fragmentation scheme and factorization scale. We found that all proton, anti-proton and charged pion spectra in p + p collisions follow xT-scaling for the momentum range where particle production is dominated by hard processes ( pT ≳ 2   GeV / c). The nuclear modification factor around midrapidity is found to be greater than unity for charged pions and to be even larger for protons at 2 < pT < 5   GeV / c.

Original languageEnglish
Pages (from-to)161-169
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume637
Issue number3
DOIs
StatePublished - Jun 8 2006

Keywords

  • Cronin effect and x-scaling
  • Fragmentation function
  • Particle production
  • Perturbative quantum chromodynamics

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