Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

3-16-2011

Journal or Book Title

Physical Review D

Volume

83

Issue

5

First Page

052004

DOI

10.1103/PhysRevD.83.052004

Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K-S(0), omega, eta', and phi mesons in p + p collisions at root s 200 GeV. Measurements of omega and phi production in different decay channels give consistent results. New results for the omega are in agreement with previously published data and extend the measured p(T) 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-p(T) and characterizing the low-p(T) 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.

Comments

This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Yasuyuki Akiba, H. Al-Bataineh, J. Alexander et al. "Measurement of neutral mesons in p+ p collisions at s= 200 GeV and scaling properties of hadron production." Physical Review D 83, no. 5 (2011): 052004. DOI:10.1103/PhysRevD.83.052004. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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