Measurement of the $WW\gamma$ gauge boson couplings in $p\bar{p}$ Collisions at $\sqrt{s}=1.8$ TeV

Abstract

The $WW\gamma$ gauge boson couplings were measured using $p\bar{p}\to \ell \nu \gamma +X$ ($\ell =e,\mu$) events at $\sqrt{s}=1.8$ TeV observed with the {DØ} detector at the Fermilab Tevatron Collider. The signal, obtained from the data corresponding to an integrated luminosity of $13.8{\mathrm{pb}}^{-1}$, agrees well with the Standard Model prediction. A fit to the photon transverse energy spectrum yields limits at the 95% confidence level on the CP--conserving anomalous coupling parameters of $-1.6<\Delta \kappa <1.8$ ($\lambda$ = 0) and $-0.6<\lambda <0.6$ ($\Delta \kappa$ = 0).

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