CP Violation in Supersymmetric Theories: stop2 -> stop1 tau- tau+

Abstract

Supersymmetric (SUSY) theories include many new parameters, some of which are CP-violating. Assuming that SUSY is found at a future high-energy collider, we examine the decay stop2 -> stop1 tau- tau+ with an eye to obtaining information about the new CP phases. We show that there are two CP-violating asymmetries which can be large in some regions of the SUSY parameter space. These involve measuring one or both of the tau spins. These asymmetries are particularly sensitive to phi_At, the phase of the trilinear coupling A_t.

arXiv comment23 pages, revtex, 5 figures (included). Several pieces of text added w.r.t. constraints from electric dipole moments and rephasing invariance. Several references added. Paper to be published in Phys. Rev. D

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Cited by in corpus (15)

• T-odd correlations from CP violating anomalous top-quark couplings revisited
• Measurement of CP Violation in Stop Cascade Decays at the LHC
• A T-odd observable sensitive to CP violating phases in squark decay
• CP-odd correlations using jet momenta from tt_bar events at the Tevatron
• Probing SUSY CP Violation in Two-Body Stop Decays at the LHC
• CP asymmetries in scalar bottom quark decays
• CP observables with spin-spin correlations in chargino production
• Normal tau polarisation as a sensitive probe of CP violation in chargino decay
• Using t -> b \bar{b} c to Search for New Physics
• SUSY CP phases and asymmetries at colliders
• CP Violation in Supersymmetric Theories: stop2->stop1 H H, stop2->stop1 Z Z, stop2->stop1 W+ W-, stop2->stop1 Z H
• CP-violation in SUSY cascades at the LHC
• Momentum reconstruction at the LHC for probing CP-violation in the stop sector
• CP Violation in Three-Body Chargino Decays
• Single-top production and rare top interactions