Broken R Parity Contributions to Flavor Changing Rates and CP Asymmetries in Fermion Pair Production at Leptonic Colliders

Details Broken R Parity Contributions to Flavor Changing Rates and CP Asymmetries in Fermion Pair Production at Leptonic Colliders Broken R Parity Contributions to Flavor Changing Rates and CP Asymmetries in Fermion Pair Production at Leptonic Colliders

1998-06-26

arxiv.org/abs/hep-ph/9806494v3

Phys.Rev. D59 (1999) 116012

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex File. 23 pages. 4 postscript figures. 1 table. Revised version with new results and several corrections in numerical res

Scientific paper

10.1103/PhysRevD.59.116012

We examine the effects of the R parity odd renormalizable interactions on flavor changing rates and CP violation asymmetries in the production of fermion-antifermion pairs at $e^-- e^+$ leptonic colliders. The produced fermions may be leptons, down-quarks or up-quarks, and the center of mass energies may range from the Z-boson pole up to $ 1000$ GeV. Off the Z-boson pole, the flavor changing rates are controlled by tree level amplitudes and the CP asymmetries by interference terms between tree and loop level amplitudes. At the Z-boson pole, both observables involve loop amplitudes. The lepton number violating interactions, associated with the coupling constants, $\l_{ijk}, \l'_{ijk}$, are only taken into account. The consideration of loop amplitudes is restricted to the photon and Z-boson vertex corrections. We briefly review flavor violation physics at colliders. We present numerical results using a single, species and family independent, mass parameter, $\tilde m$, for all the scalar superpartners and considering simple assumptions for the family dependence of the R parity odd coupling constants.

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