Phenomenological study of the processe+e−→μ+

Abstract

We perform a detailed study of the process e + e − → µ + µ − ν lνl including all contributions. The contributions other than from real gauge boson production leads to a rich phenomenology. We explore the use of the process as a means of precision measurement of the ZW W and γW W vertices. We concentrate on LEP II energies, √ s = 200 GeV, and energies appropriate to the proposed Next Linear Collider (NLC)high energy e + e − collider with center of mass energies √ s = 500 and 1 TeV. At 200GeV, the process offers, at best, a consistency check of other processes being considered at LEP200. At 500 GeV, the parameters κ γ , λ γ , κ Z , and λ Z can be measured to about ±0.1 or better at 95% C.L. while at 1 TeV, they can be measured to about ±0.01. At the high luminosities anticipated at high energy linear colliders precision measurements are likely to be limited by systematic rather than statistical errors.