Study of Single W production in e-gamma collisions through the decay lepton spectrum to probe gamma-WW couplings

TL;DR

This paper explores how anomalous gamma-W-W couplings affect the secondary lepton spectra in e-gamma collisions, demonstrating the potential of ILC to precisely probe these couplings through energy and angular distributions.

Contribution

It introduces a semi-analytical method to analyze lepton spectra for detecting anomalous gamma-W-W couplings in e-gamma collisions at the ILC.

Findings

Lepton spectra are sensitive to anomalous couplings.

ILC can effectively probe gamma-WW couplings.

Energy-angle distributions help distinguish new physics.

Abstract

We investigate the effect of anomalous gamma-W-W couplings in e-gamma --> nu W through the angular and energy spectrum of the secondary leptons. Within the narrow-width approximation, a semi-analytical study of the secondary lepton energy-angle double distribution is considered. Utility of observables derived from this is demonstrated by considering the anomalous coupling, delta-kappa-gamma. Results of our investigation for typical ILC machine considered at Ecm = 300-1000 GeV re-affirms potential of this collider as a precision machine.