Midrapidity direct-photon production in p+p collisions at √s=200 GeV
Physical Review D - Particles, Fields, Gravitation and Cosmology Volume 71 Issue 7
Page 071102-1-071102-7
published_at 2005-04-08
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| File | |
| Title ( eng ) |
Midrapidity direct-photon production in p+p collisions at √s=200 GeV
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| Creator |
PHENIX Collaboration
Hachiya Takashi
Kohara Ryota
Nakamura Tomoaki
Tsuchimoto Yuji
|
| Source Title |
Physical Review D - Particles, Fields, Gravitation and Cosmology
|
| Volume | 71 |
| Issue | 7 |
| Start Page | 071102-1 |
| End Page | 071102-7 |
| 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.
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| Keywords |
electromagnetic decays
photon production
pion decay
eta mesons
perturbation theory
quantum chromodynamics
proton-proton inclusive interactions
|
| Language |
eng
|
| Resource Type | journal article |
| Publisher |
American Physical Society
|
| Date of Issued | 2005-04-08 |
| Rights |
Copyright (c) 2005 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.71.071102
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.71.071102
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