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Investigation of some processes of multiple lepton and boson birth on linear colliders of polarized photons

T. Shishkina
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Abstract

The main possibilities of investigation of leptons and bosons birth in interaction of polarized photons are considered. The usage of $γγ\to f \bar{f} [+γ]$ reactions for the luminosity measurement on linear photon collider is analyzed. The achievable precision of the luminosity measuring is considered and calculated. The first-order QED correction to $γγ\to l \bar{l}$ scattering is analyzed. Differential cross section of process $γγ\to 4l$ is calculated using the helicity amplitudes method as well as covariant method of precision calculations. All possible polarization states of interacting particles are investigated under different cuts of TESLA kinematics. For the detection of deviations from SM predictions at linear $γγ$ colliders with centre of mass energies running to $1 TeV$ the influence of three possible anomalous couplings on the cross sections of $W^+W^-$ productions has been investigated. The significant discrimination between various anomalous contributions is discovered. The main contribution of high order electroweak effects is considered.

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T. Shishkina. 2004-01-15. Investigation of some processes of multiple lepton and boson birth on linear colliders of polarized photons. https://arxiv.org/abs/hep-ph/0401113

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