A Simple Born-Form Approximation for e^+ e^- to W^+W^- at One Loop

Abstract

A simple Born-form approximation at the one-loop level for e^+e^- to W^+ W^- at high energies is given in analytic form. The different contributions to the three invariant one-loop amplitudes, S_I^{(-)}(s,t) and S_Q^{(\pm)}(s,t), determining the Born-form helicity amplitudes are thoroughly investigated analytically and numerically. At energies above 500 GeV, the accuracy of the simple Born-form approximation for the differential production cross section is better than 1% for almost all W^+W^- production angles, independently of whether the W^+W^- polarization is summed over, or whether a longitudinal or a transverse polarization is selected for both the W^+ and the W^-.

27 pages, 3 Postscript figures, uses epsf.sty

References in corpus (1)

• A Simple Approximation of the One-Loop Corrected Cross Section for $e^{+}{e}^{-}\to W^{+}{W}^{-}$ at LEP 2

Cited by in corpus (4)

• Electroweak corrections to charged-current e+e- --> 4 fermion processes - technical details and further results
• Electroweak radiative corrections to e+e- --> WW --> 4fermions in double-pole approximation -- the RACOONWW approach
• Asymptotic properties of Born-improved amplitudes with gauge bosons in the final state
• High-Energy Cross Section for e^+e^- to W^+ W^- to 4 fermions + gamma