Source of CP Violation for the Baryon Asymmetry of the Universe

Abstract

We give a description of why the existence of a fourth generation is likely to provide enough CP violation for baryogenesis, and trace how this observation came about. We survey the current experimental and theoretical pursuits and outline a research agenda, touching upon unitarity violation and very heavy chiral quarks, and comment on how the electroweak phase transition picture might be altered.

Invited talk presented at 2nd International Workshop on Dark Matter, Dark Energy and Matter-antimatter Asymmetry, Hsinchu, Taiwan, November 5-6, 2010

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• Fourth Generation Leptons and Muon $g-2$
• Search for TeV Scale Physics in Heavy Flavour Decays
• Large-scale asymmetry in the distribution of galaxy spin directions -- analysis and reproduction
• Chiral heavy fermions in a two Higgs doublet model: 750 GeV resonance or not
• B-physics results from Tevatron
• A variant two-Higgs doublet model with a new Abelian gauge symmetry
• Analysis of Various Polarization Asymmetries In The Inclusive $b\to s{\ell }^{+}{\ell }^{-}$ Decay In The Fourth-Generation Standard Model
• Theoretical Review on CP Violation in Rare B decays
• A Fourth Neutrino and its Consequences on CP Asymmetries
• Observation of CP violation in charm decays at LHCb
• CP Violation in B^0_s Mesons
• A Fourth Chiral Generation And Susy Breaking
• Highlights of Flavour Violation in the Presence of a 4th Generation