Identified charged hadron production in p + p collisions at √ s = 200 and 62.4 GeV

Physical Review C Volume 83 Issue 6 Page 064903-1-064903-29 published_at 2011-06-23
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Title ( eng )
Identified charged hadron production in p + p collisions at √ s = 200 and 62.4 GeV
Creator
PHENIX Collaboration
Hachiya T.
Harada H.
Haruna K.
Kijima K. M.
Nakamiya Y.
Nakamura T.
Ouchida M.
Sakata H.
Torii H.
Tsuchimoto Y.
Yamaura K.
Source Title
Physical Review C
Volume 83
Issue 6
Start Page 064903-1
End Page 064903-29
Abstract
Transverse momentum distributions and yields for π±, K±, p, and p^<-> 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 othermeasurements at different √s in p + p and p + p 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.
NDC
Physics [ 420 ]
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 2011-06-23
Rights
Copyright (c) 2011 American Physical Society
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0556-2813
[ISSN] 2469-9985
[NCID] AA00773613
[DOI] 10.1103/PhysRevC.83.064903