Measurements of W gamma and Z gamma production in pp collisions at root s=7 TeV with the ATLAS detector at the LHC
Number of Authors: 2907
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 87, no 11, 112003- p.Article in journal (Refereed) Published
The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are measured using pp collisions at root s = 7 TeV. The analyses use a data sample with an integrated luminosity of 4.6 fb(-1) collected by the ATLAS detector during the 2011 LHC data-taking period. Events are selected using leptonic decays of the W and Z bosons [W(e nu, mu nu) and Z(e(+)e(-), mu(+)mu(-), nu(nu) over bar)] with the requirement of an associated isolated photon. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The measurements are used to probe the anomalous WW gamma, ZZ gamma, and Z gamma gamma triple-gauge-boson couplings and to search for the production of vector resonances decaying to Z gamma and W gamma. No deviations from Standard Model predictions are observed and limits are placed on anomalous triple-gauge-boson couplings and on the production of new vector meson resonances.
Place, publisher, year, edition, pages
2013. Vol. 87, no 11, 112003- p.
gauge boson couplings, cross-section, p(p)over-bar collisions, parton distributions, symmetry-breaking, search, tevatron, particle, sector, limits
IdentifiersURN: urn:nbn:se:kth:diva-137672DOI: 10.1103/PhysRevD.87.112003ISI: 000319917800001ScopusID: 2-s2.0-84879158523OAI: oai:DiVA.org:kth-137672DiVA: diva2:679509
QC 20131216. Author count: 2907.2013-12-162013-12-162013-12-16Bibliographically approved