Strong Final State Interactions in γγ → WW
نویسندگان
چکیده
We study the effects of a possible strong final state interaction among longitudinal W 's in γγ → W W. The relevant partial wave amplitudes are modified by an Omnès function approximated by a Breit-Wigner form factor. We study the fractional cross section f 00 = σ LL /σ Total 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 f 2 and σ resonances in the ππ system. We also examine the effects of final state interaction in the case of polarised photons (J z = 0 or J z = 2), and the impact on the Drell-Hearn-Gerasimov sum rule.
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