Title

Measurement of the isolated prompt photon production cross section in pp collisions at √s = 7 TeV

Authors

V. Khachatryan
A. M. Sirunyan
Thomas Bergauer
Marc M. Baarmand
Marcus Hohlmann
H Kalakhety
Robert M. Ralich
Igor Vodopiyanov
B. Dorney
S. Guragain

Document Type

Article

Publication Title

Physical Review Letters

Abstract

The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E T in pp collisions at ffiffi s p ¼ 7 TeV using data recorded by the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2:9 pb 1. Photons are required to have a pseudorapidity j j < 1:45 and E T > 21 GeV, covering the kinematic region 0:006 < xT < 0:086. The measured cross section is found to be in agreement with nextto-leading-order perturbative QCD calculations.

DOI

10.1103/PhysRevLett.106.082001

Publication Date

2-23-2011

Recommended Citation

Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., . . . Weinberg, M. (2011). Measurement of the isolated prompt photons production cross section in pp collisions at √s=7TeV. Physical Review Letters, 106(8)