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Strong Final State Interactions in γγ → WW

By P. Poulose and L. M. Sehgal


We study the effects of a possible strong final state interaction among longitudinal W’s in γγ → WW. The relevant partial wave amplitudes are modified by an Omnès function approximated by a Breit-Wigner form factor. We study the fractional cross section f00 = σLL/σTotal with both W’s longitudinally polarised, in the presence of a J = 2 resonance (M = 2.5 TeV, Γ = 500 GeV) or a J = 0 resonance (M = 1 TeV, Γ = 1 TeV), whose parameters are scaled up from the f2 and σ resonances in the ππ system. We also examine the effects of final state interaction in the case of polarised photons (Jz = 0 or Jz = 2), and the impact on the Drell-Hearn-Gerasimov sum rule

Year: 2002
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