First Study of the Radiation-Amplitude Zero in Wγ Production and Limits on Anomalous WWγ Couplings at s√=1.96 TeV

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Issue Date
2008-06-20Author
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We present results from a study of pp-bar→Wγ+X events utilizing data corresponding to 0.7 fb(−1) of integrated luminosity at s√=1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider. We set limits on anomalous WWγ couplings at the 95% C.L. The one-dimensional 95% C.L. limits are 0.49<κ(γ)<1.51 and −0.12<λ(γ)<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 Wγ system.
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.241805.
ISSN
0031-9007Collections
Citation
V. M. Abazov et al. (D0 Collaboration). (2008). "First Study of the Radiation-Amplitude Zero in Wγ Production and Limits on Anomalous WWγ Couplings at s√=1.96 TeV." Physical Review Letters, 100(24):214805. http://dx.doi.org/10.1103/PhysRevLett.100.241805
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