W gamma Production and Limits on Anomalous WW gamma Couplings in p(p)over-bar Collisions at root s=1.96 TeV
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 107, no 24, 241803- p.Article in journal (Refereed) Published
We measure the cross section and the difference in rapidities between photons and charged leptons for inclusive W(-> l nu) + gamma production in e gamma and mu gamma final states. Using data corresponding to an integrated luminosity of 4.2 fb(-1) collected with the D0 detector at the Fermilab Tevatron Collider, the measured cross section times branching fraction for the process p (p) over bar -> W gamma + X -> l nu gamma + X and the distribution of the charge-signed photon-lepton rapidity difference are found to be in agreement with the standard model. These results provide the most stringent limits on anomalous WW gamma couplings for data from hadron colliders: -0.4 < Delta kappa(gamma) < 0.4 and -0.08 < lambda(gamma) < 0.07 at the 95% C.L.
Place, publisher, year, edition, pages
2011. Vol. 107, no 24, 241803- p.
IdentifiersURN: urn:nbn:se:uu:diva-166725DOI: 10.1103/PhysRevLett.107.241803ISI: 000297939300004OAI: oai:DiVA.org:uu-166725DiVA: diva2:481851