{ "id": "hep-ph/9302319", "version": "v1", "published": "1993-02-27T00:07:54.000Z", "updated": "1993-02-27T00:07:54.000Z", "title": "Single $W$ Boson Production in High Energy $eγ$ Collisions", "authors": [ "Stephen Godfrey", "K. Andrew Peterson" ], "comment": "40 pages, 16 uuencoded figures, RevTex, OCIP/C 92-7", "categories": [ "hep-ph" ], "abstract": "We studied single $W$ boson production in high energy $e\\gamma$ collisions and the sensitivity of various observables to the $WW\\gamma$ gauge boson coupling. We evaluated the helicity amplitudes including the $W$ decay to final state fermions and all Feynman diagrams which give the same final state. At high energy, the non-resonant diagrams give significant contributions to the cross sections and should not be neglected. We first considered a $\\sqrt{s}=120$~GeV $e^+e^-$ collider converted to an $e\\gamma$ collider by backscattering a low energy laser off of one of the original electron beams. Such a collider could measure $\\kappa_\\gamma$ to $\\simeq\\pm 0.09$ at 95\\% C.L. which is the same level of precision as could be achieved at LEP200 using $W$ pair production. We next considered single $W$ production at a 200 GeV $e^+e^-$ collider in the Weizacker-Williams approximation which can measure the $WW\\gamma$ vertex independently of the $WWZ$ vertex. This process can measure $\\kappa_\\gamma$ to $\\pm 0.15$ at 95\\% C.L. which is comparable to the $W$ pair production process. Finally, we examined $W$ production at 500 GeV and 1 TeV $e^+e^-$ colliders, comparing results for photon spectra obtained from a backscattered laser and from beamstrahlung radiation. Here we found that the couplings could best be measured using the backscattered laser photons with $|\\delta\\kappa_\\gamma|\\leq 0.07$ and", "revisions": [ { "version": "v1", "updated": "1993-02-27T00:07:54.000Z" } ], "analyses": { "keywords": [ "high energy", "boson production", "collisions", "final state fermions", "original electron beams" ], "note": { "typesetting": "RevTeX", "pages": 40, "language": "en", "license": "arXiv", "status": "editable", "inspire": 344415, "adsabs": "1993hep.ph....2319G" } } }