Ratio of the Isolated Photon Cross Sections at \sqrt{s} = 630 and 1800 GeV

Abstract

The inclusive cross section for production of isolated photons has been measured in \pbarp collisions at $\sqrt{s}=630$ GeV with the \D0 detector at the Fermilab Tevatron Collider. The photons span a transverse energy ($E_T$) range from 7-49 GeV and have pseudorapidity $|\eta |<2.5$. This measurement is combined with to previous \D0 result at $\sqrt{s}=1800$ GeV to form a ratio of the cross sections. Comparison of next-to-leading order QCD with the measured cross section at 630 GeV and ratio of cross sections show satisfactory agreement in most of the $E_T$ range.

arXiv comment7 pages. Published in Phys. Rev. Lett. 87, 251805, (2001)

References in corpus (5)

• Extraction of the Width of the W Boson from Measurements of sigma(ppbar->W+X)B(W->e nu) and sigma(ppbar->Z+X)B(Z->e e) and their Ratio
• kt Effects in Direct-Photon Production
• A GLOBAL QCD STUDY OF DIRECT PHOTON PRODUCTION
• The Isolated Photon Cross Section in p pbar Collisions at sqrt(s) = 1.8 TeV
• Origin of the $k_T$ smearing in direct photon production

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