W, Z and photon production in CMS

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 t...

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Veröffentlicht in:	arXiv.org 2012-08
Hauptverfasser:	de la Cruz, Begoña, the CMS Collaboration
Format:	Artikel
Sprache:	eng
Schlagworte:	Bosons Decay rate Large Hadron Collider Muons Nucleon-nucleon interactions Photons Physics - High Energy Physics - Experiment Physics - Nuclear Experiment Quantum chromodynamics Solenoids Z particles
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1208.4927