Monday, August 27, 2012

1208.4927 (Begoña de la Cruz et al.)

W, Z and photon production in CMS    [PDF]

Begoña de la Cruz, for the CMS Collaboration
The production of electroweak bosons (photons, W and Z particles) in PbPb and pp collisions at sqrt(s) = 2.76 TeV per interacting nucleon pair has been measured with the CMS detector at the LHC. Direct photon production is studied using samples of isolated photons. W and Z bosons are reconstructed through their leptonic decay into muons. Their production rate in PbPb data is studied as a function of the centrality of the collision and compared to that in pp interactions, once normalized by the number of binary nucleon-nucleon interactions. The results are also compared to next-to-leading-order perturbative QCD calculations.
View original: http://arxiv.org/abs/1208.4927

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