Theory Seminar

KEK 素粒子原子核研究所・理論セミナー

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TITLE：	Flavor mixings in SUSY SO(10) GUT and a large phase of Bs--Bs_bar mixing
	(in English)
SPEAKER：	Dr. Yukihiro Mimura (National Taiwan University)
DATE：	September 7 (Tue.) 11:00-12:00
PLACE:	KEK Kenkyu Honkan 1F Meeting Room 3

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　　　 （ABSTRACT）

Diverse mass and mixing patterns between the quarks and leptons makes it challenging to construct a simple grand unified theory of flavor. The SO(10) SUSY GUT with type II seesaw mechanism giving neutrino masses provide a natural framework for addressing this issue. We consider the possibility of a large phase of Bs--Bs_bar mixing in supersymmetric SU(5) and SO(10) models. In the SU(5) model, the magnitude of this phase is correlated with the branching ratio of tau --> mu gamma In the case of SO(10) models, this correlation can be relaxed and a large phase can be obtained.