Flavor changing Z-decays from scalar interactions at a Giga-Z Linear Collider
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
The flavor changing decay Z -> d_I \bar{d}_J is investigated with special emphasis on the b \bar{s} final state. Various models for flavor violation are considered: two Higgs doublet models (2HDM's), supersymmetry (SUSY) with flavor violation in the up and down-type squark mass matrices and SUSY with flavor violation mediated by R-parity-violating interaction. We find that, within the SUSY scenarios for flavor violation, the branching ratio for the decay Z -> b \bar{s} can reach 10^{-6} for large \tanβvalues, while the typical size for this branching ratio in the 2HDM's considered is about two orders of magnitudes smaller at best. Thus, flavor changing SUSY signatures in radiative Z decays such as Z -> b \bar{s} may be accessible to future ``Z factories'' such as a Giga-Z version of the TESLA design.
27 pages, 15 figures, REVTeX4. A new section added and a few minor corrections were made in the text
27 pages, 15 figures, REVTeX4. A new section added and a few minor corrections were made in the text