| Autor: |
PHENIX Collaboration, Hachiya, Takashi, Homma, Kensuke, Kohara, Ryota, Nakamura, Tomoaki, Shigaki, Kenta, Sugitate, Toru, Tsuchimoto, Yuji |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Předmět: |
|
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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