Signatures of anomalous coupling in boson pair production through γγcollisions

Abstract

We discuss possible New Physics (NP) effects on the processes $\gamma \gamma \to W^{+}{W}^{-}$, $ZZ$, $Z\gamma$, $\gamma \gamma$, $HH$ which are observable in $\gamma \gamma$ collisions. Such collisions may be achieved through laser backscattering at a high energy $e^{+}{e}^{-}$ linear collider. To the extent that no new particles will be directly produced in the future colliders, it has already been emphasized that the new physics possibly hidden in the bosonic interactions, may be represented by the seven $dim=6$ operators ${Ø}_W$, ${Ø}_{B\Phi }$, ${Ø}_{W\Phi }$, ${Ø}_{UB}$, ${Ø}_{UW}$, $\olØ_{UB}$ and $\olØ_{UW}$ (the last two ones being CP-violating). In this paper, we show that the above processes are sensitive to NP scales at the several TeV range, and we subsequently discuss the possibility to disentangle the effects of the various operators.

arXiv comment15 pages, latex file + 8 figures in ps file.

Cited by in corpus (9)

• New Higgs Couplings at e+ e- and Hadronic Colliders
• Lorentz-violating effects on pair production of W bosons in photon collisions
• Four Fermions Productions at a $\gamma \gamma$ Collider
• Probing $WW\gamma$ coupling through $e^{-}\gamma \to {\nu }_e{W}^{-}$ at ILC
• Effective-Lagrangian approach to gamma gamma --> WW; I: Couplings and amplitudes
• Anomalous Couplings in e^+ e^- --> W^+ W^- gamma at LEP2 and NLC
• Indirect Signatures of CP Violation in the Processes $\gamma \gamma \to \gamma \gamma$, $\gamma Z$, and $ZZ$
• QCD Corrections to $\gamma \gamma \to ZZ$ at Small Scattering Angles
• Introduction to Photon 2007