Midrapidity direct-photon production in p+p collisions at √s=200 GeV

Adler, S. S. ; Kapoor, S. S. ; et., al (2005) Midrapidity direct-photon production in p+p collisions at √s=200 GeV Physical Review D, 71 (7). 071102_1-071102_7. ISSN 0556-2821

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Official URL: http://prd.aps.org/abstract/PRD/v71/i7/e071102

Related URL: http://dx.doi.org/10.1103/PhysRevD.71.071102

Abstract

A measurement of direct photons in p+p collisions at √s=200 GeV is presented. A photon excess above background from π0→γ+γ, η→γ+γ and other decays is observed in the transverse momentum range 5.5<pT<7 GeV/c. The result is compared to a next-to-leading-order perturbative QCD calculation. Within errors, good agreement is found between the QCD calculation and the measured result.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:16639
Deposited On:15 Nov 2010 13:31
Last Modified:17 May 2016 01:22

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