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Identified charged hadron production in p+ p collisions at sqrt [s]= 200 and 62.4 GeV

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20565

Identified charged hadron production in p+ p collisions at sqrt [s]= 200 and 62.4 GeV

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Title: Identified charged hadron production in p+ p collisions at sqrt [s]= 200 and 62.4 GeV
Author: Fields, Douglas E.; PHENIX Collaboration; Barnes, P. D.; Boissevain, J. G.; Butsyk, S.; Camacho, C. M.; Constantin, P.; Kapustinsky, J.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, M. X.; McGaughey, P. L.; Norman, B. E.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; Van Hecke, H. W.; Bassalleck, B.; Haegemann, C.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.; Al-Bataineh, H.; Armendariz, R.; Kyle, G. S.; Liu, H.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Wang, X. R.
Abstract: Transverse momentum distributions and yields for π±, K±, p, and p̄ in p+p collisions at √s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter Tinv, mean transverse momentum 〈pT〉, and yield per unit rapidity dN/dy at each energy, and compare them to other measurements at different √s in p+p and p+p̄ collisions. We also present the scaling properties such as mT scaling and xT scaling on the pT spectra between different energies. To discuss the mechanism of the particle production in p+p collisions, the measured spectra are compared to next-to-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations.
Date: 2011-06-23
Publisher: American Physical Society
Citation: Physical Review C, 83(6): 1-29
Description: http://prc.aps.org/pdf/PRC/v83/i6/e064903
URI: http://hdl.handle.net/1928/20565

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