Wγ Production and Limits on Anomalous WWγ Couplings in pp̅ Collisions at √s=1.96 TeV
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 107, 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(→lν)+γ production in eγ and μγ 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 pp̅ →Wγ+X→lνγ+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 WWγ couplings for data from hadron colliders: -0.4<Δκγ<0.4 and -0.08<λγ<0.07 at the 95% C.L.
Place, publisher, year, edition, pages
2011. Vol. 107, 241803- p.
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-65789DOI: 10.1103/PhysRevLett.107.241803ISI: 000297939300004OAI: oai:DiVA.org:su-65789DiVA: diva2:464714
FunderSwedish Research Council
authorCount :4212011-12-132011-12-132012-12-05Bibliographically approved