Measurement of Isolated Photon Production in $pp$ and PbPb Collisions at $\sqrt{s_{NN}}=2.76$ TeV - INSPIRE

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Measurement of Isolated Photon Production in $pp$ and PbPb Collisions at $\sqrt{s_{NN}}=2.76$ TeV

CMS

Collaboration

Jan, 2012

22 pages

Published in:

Phys.Lett.B 710 (2012) 256-277

Published: Jul 16, 2013

e-Print:

1201.3093 [nucl-ex]

DOI:

10.1016/j.physletb.2012.02.077

Report number:

CMS-HIN-11-002,
CERN-PH-EP-2011-221

Experiments:

CERN-LHC-CMS

View in:

reference search263 citations

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Abstract: (Elsevier)

Isolated photon production is measured in proton–proton and lead–lead collisions at nucleon–nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range |η|<1.44 and transverse energies ET between 20 and 80 GeV with the CMS detector at the LHC. The measured ET spectra are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The ratio of PbPb to pp isolated photon ET -differential yields, scaled by the number of incoherent nucleon–nucleon collisions, is consistent with unity for all PbPb reaction centralities.

Note:

Submitted to Physics Letters B

CMS
Physics
Heavy-ions
Photons
p p: scattering
heavy ion: scattering
lead
photon: hadroproduction
differential cross section: measured
quantum chromodynamics: perturbation theory

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Figures(0)

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