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

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

2001-06-05

arxiv.org/abs/hep-ex/0106026v5

Phys.Rev.Lett.87:251805,2001

Physics

High Energy Physics

High Energy Physics - Experiment

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

Scientific paper

10.1103/PhysRevLett.87.251805

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.

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