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First Study of the Radiation-Amplitude Zero in Wγ Production and Limits on Anomalous WWγ Couplings at s√=1.96 TeV
Baringer, Philip S. Bean, Alice Hensel, Carsten Moulik, Tania Wilson, Graham Wallace Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S.
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
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Abstract
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.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.241805.
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2008-06-20
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American Physical Society
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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