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ID 45822
file
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.
NDC
Physics
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.
journal title
Physical Review C
volume
Volume 83
issue
Issue 6
start page
064903-1
end page
064903-29
date of issued
2011-06-23
publisher
American Physical Society
issn
0556-2813
2469-9985
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2011 American Physical Society
department
Graduate School of Science