5,565 research outputs found
Source of CP Violation for the Baryon Asymmetry of the Universe
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.Comment: Invited talk presented at 2nd International Workshop on Dark Matter,
Dark Energy and Matter-antimatter Asymmetry, Hsinchu, Taiwan, November 5-6,
201
What Can We Learn from Charmless Rare B Decays - the Past/Next 3 Years
A personal perspective is given on physics of charmless rare B decays: 1997
-- 2003.Comment: 6 pages, 2 eps figures included. Invited talk presented at joint
session of the 8th Asia Pacific Physics Conference (APPC 2000) and 3rd ACFA
Workshop on Physics/Detector at the Linear Collider (ACFA-LC3), Taipei,
Taiwan, August 200
Fourth Generation -- Towards Effect of Large Yukawa Coupling
In this talk we cover two threads regarding the 4th generation: on CP
violation, from Earth up to the Heavens, i.e. from accelerator-based
experimental studies, towards baryon asymmetry of the Universe; and on direct
search bounds on and , towards the possibility of electroweak
symmetry breaking through large Yukawa couplings. Prospects and discussions are
presented.Comment: Plenary talk presented at TOP2010, May 31 - June 4, 2010, Bruges,
Belgiu
Effects of New Physics on CP Violation in B Decays
We discuss two models with 1 extra CP phase in
transition. The CP phase with fourth
generations, previously ignored, could impact on , and , but does not affect EM and strong penguins.
With SUSY at TeV scale, a right-handed ``'' squark can be
driven light by flavor mixing. It does not affect , but can
generate while giving . mixing and would likely be
large, and in is promising.Comment: 3 pages, 3 figures. Talk presented at EPS2003 Conference, Aachen,
Germany, July 200
Indications for Large Rescattering in Rare B Decays
The sign of , the evidence for , and the possibly sizable and in all suggest that final state rescattering may be needed in
decay, which is echoed by large color suppressed modes. An SU(3) formalism of rescattering in final states leads to interesting predictions, in
particular allowing for small .Comment: 3 pages, 3 figures. Talk presented at EPS2003 Conference, Aachen,
Germany, July 200
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