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First study of the radiation-amplitude zero in W gamma production and limits on anomalous WW gamma couplings at root s=1.96 TeV
University of Chicago.ORCID-id: 0000-0002-8913-0981
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Rekke forfattare: 5342008 (engelsk)Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 100, nr 24, s. 241805-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2008. Vol. 100, nr 24, s. 241805-
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URN: urn:nbn:se:kth:diva-47308DOI: 10.1103/PhysRevLett.100.241805ISI: 000256942400021OAI: oai:DiVA.org:kth-47308DiVA, id: diva2:454709
Merknad
QC 20111108 Author Count: 534Tilgjengelig fra: 2011-11-08 Laget: 2011-11-08 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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