First study of the radiation-amplitude zero in W gamma production and limits on anomalous WW gamma couplings at root s=1.96 TeV
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| Publication date | 2008 |
| Journal | Physical Review Letters |
| Volume | Issue number | 100 | 24 |
| Pages (from-to) | 241805 |
| Number of pages | 7 |
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| Abstract | 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. |
| Document type | Article |
| Published at |
https://doi.org/10.1103/PhysRevLett.100.241805
(Final published version)
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