First study of the radiation-amplitude zero in W gamma production and limits on anomalous WW gamma couplings at root s=1.96 TeV
Number of Authors: 534
2008 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 100, no 24, 241805- p.Article in journal (Refereed) Published
We present results from a study of p (p) over bar -> W gamma+X events utilizing data corresponding to 0.7 fb(-1) of integrated luminosity at root s = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider. We set limits on anomalous WW gamma couplings at the 95% C.L. The one-dimensional 95% C.L. limits are 0.49 <kappa(gamma)< 1.51 and -0.12 <lambda(gamma)< 0.13. We make the first study of the charge-signed rapidity difference between the lepton and the photon and find it to be indicative of the standard model radiation-amplitude zero in the W gamma system.
Place, publisher, year, edition, pages
2008. Vol. 100, no 24, 241805- p.
IdentifiersURN: urn:nbn:se:kth:diva-47308DOI: 10.1103/PhysRevLett.100.241805ISI: 000256942400021OAI: oai:DiVA.org:kth-47308DiVA: diva2:454709
QC 20111108 Author Count: 5342011-11-082011-11-082012-02-01Bibliographically approved