Measurement of the WW-Gamma Vertex Through Single Photon Production at e^+ e^- Colliders

Physics – High Energy Physics – High Energy Physics - Phenomenology

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14 pages with 8 figures (available on request), preprint # OCIP/C 94-4, UQAM-PHE-94-09

Scientific paper

10.1103/PhysRevD.50.5607

We perform a detailed study of the process $e^+e^-\to\gamma\nu_l\bar\nu_l$ and its sensitivity to anomalous gauge boson couplings of the $\gamma WW$ vertex. We concentrate on LEP II energies, $\sqrt{s}=200$ GeV, and energies appropria- te to the proposed Next Linear Collider (NLC) high energy $e^+e^-$ collider with c.m. energies of 500 GeV and 1 TeV. At 200 GeV, the process offers, at best, a consistency check of other processes being considered at LEP-200. At 500 GeV, the parameters $\kappa_\gamma$ and $\lambda_\gamma$ can be measured to about $\pm 0.05$ and $\pm 0.1$ respectively at 95\% C.L. while at 1 TeV, they can be measured to about $\pm 0.02$. At the high luminosities anticipa- ted at high energy linear colliders precision measurements are likely to be limited by systematic rather than statistical errors.

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