Limits on anomalous WW gamma couplings from p(p)over-bar->W gamma+X events at root s=1.8 TeVстатья
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Аннотация:We have measured the WW gamma gauge boson coupling parameters using <p(p)over bar>-->l nu gamma+X (l=e,mu) events at root s=1.8 TeV. The data, corresponding to an integrated luminosity of 92.8 pb(-1), were collected using the D{empty set} detector at the Fermilab Tevatron Collider. The measured cross section times branching ratio for <p(p)over bar>-->W gamma+X with p(T)(gamma)>10 GeV/c and R-l gamma >0.7 is 11.3(-1.5)(+1.7)+/-1.5 pb, in agreement with the standard model prediction. The 1 degree of freedom 95% confidence level limits on individual CP-conserving parameters are -0.93 <Delta kappa<0.94 and -0.31 <lambda<0.29. Similar limits are set on the CP-violating coupling parameters.