APS » PROLA » Phys. Rev. Lett. » Volume 87 » Issue 25

Phys. Rev. Lett. 87, 251805 (2001) [7 pages]

Ratio of Isolated Photon Cross Sections in pp̅ Collisions at √s  =  630 and 1800 GeV
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V. M. Abazov et al. (D0 Collaboration)
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Received 13 August 2001; published 30 November 2001

The inclusive cross section for production of isolated photons has been measured in pp̅ collisions at sqrt[s]  =  630 GeV with the D0 detector at the Fermilab Tevatron Collider. The photons span a transverse energy (ET) range from 7–49 GeV and have pseudorapidity |η|<2.5. This measurement is combined with the 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 the ratio of cross sections show satisfactory agreement in most of the ET range.


©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v87/e251805
DOI: 10.1103/PhysRevLett.87.251805
PACS: 13.85.Qk, 12.38.Qk

* Visitor from University of Zurich, Zurich, Switzerland.

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