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ID 45824
file
creator
PHENIX Collaboration
Hachiya, T.
Harada, H.
Haruna, K.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Sakata, H.
NDC
Physics
abstract
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K^<0>_<S>, ω, η', and φ mesons in p + p collisions at √s = 200 GeV. Measurements of ω and φ production in different decay channels give consistent results. New results for the ω are in agreement with previously published data and extend the measured pT coverage. The spectral shapes of all hadron transverse momentum distributions measured by PHENIX are well described by a Tsallis distribution functional form with only two parameters, n and T, determining the high-pT and characterizing the low-pT regions of the spectra, respectively. The values of these parameters are very similar for all analyzed meson spectra, but with a lower parameter T extracted for protons. The integrated invariant cross sections calculated from the fitted distributions are found to be consistent with existing measurements and with statistical model predictions.
journal title
Physical Review D
volume
Volume 83
issue
Issue 5
start page
052004-1
end page
052004-26
date of issued
2011-03-16
publisher
American Physical Society
issn
0556-2821
2470-0010
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