TL;DR
This paper explores the potential of a fourth-generation extension within SUSY to address baryogenesis at the electroweak scale, considering experimental constraints and implications for future colliders.
Contribution
It proposes a 4th generation SUSY model that could explain baryogenesis and interprets recent experimental hints within an extended CKM framework.
Findings
Tevatron data restricts parameter space for new quarks and Higgs boson.
Hints of CP violation in Bs decays support 4th generation models.
Predictions for LHC and TeV linear collider scenarios.
Abstract
A fourth generation could provide, within SUSY, a solution to baryogenesis at the EW scale. It is allowed by precision measurements. Available data from Tevatron already restrict the allowed domain of parameters for the new quarks and the Higgs boson. There are some indications from b->s transitions which could be interpreted within an extension of the CKM matrix to 4x4, in particular CPV in the Bs time-dependence for the J/Psi-Phi mode observed at Tevatron. If confirmed with more data the 4MSSM interpretation predicts a very interesting scenario for LHC and a TeV LC.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Dark Matter and Cosmic Phenomena