Theory Seminar

KEK 素粒子原子核研究所・理論セミナー



TITLE：

Factorization in color-suppressed B->D\pi decays

SPEAKER：

Dr. Dan Pirjol (Johns Hopkins University)

DATE：

Sep. 30 (Tue.) 13:30

PLACE:

Kenkyu Honkan 2F RM 220/221


　　　　　　　　　　　　　　　　

　　　（ABSTRACT）
Using SCET (Soft-Collinear Effective Theory) methods,
a factorization theorem is proved for color suppressed B^0 -> D^0 M^0 decays (M = pi,rho, ...), at leading order in \Lambda/m_b.
A new mechanism is described for generating non-perturbative
strong phases in the factorization framework. This yields model-independent predictions, which include the equality of the B->DM and B->D^* M amplitudes and strong phases. They are found to agree well with experimental data on B0->D0(*)\pi^0 and B0->D0(*) \rho^0.