12-18 August 2012
US/Eastern timezone

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Inclusive isolated photons in pp and PbPb collisions at 2.76 TeV with CMS

15 Aug 2012, 11:20
20m
Diplomat ()

Diplomat

Oral Presentation Electroweak probes Parallel 4C: Electro-Weak Probes (Chair D. D'Enterria)

Speaker

George Stephans (Massachusetts Inst. of Technology (US))

Description

Final data on isolated photon production will be presented, measured in both pp and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV with the CMS detector at the LHC. The isolated photon transverse energy (ET) spectra, covering the pseudorapidity range |eta| < 1.44 and transverse energy ET > 20 GeV, are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The measured isolated photon RAA, with a reference based on pp data, is consistent with unity for all PbPb collision centralities.

Primary author

Presentation Materials

Paper