Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 32: Flavourphysik (Theorie)

T 32.7: Talk

Monday, February 29, 2016, 18:15–18:30, VMP8 SR 106

Corrections to the Bag Factor in B-B-Mixing — Andrey G. Grozin¹, •Rebecca Klein², Thomas Mannel², and Alexei A. Pivovarov² — ¹BINP, Novosibirsk — ²Universität Siegen

B-B-Mixing is parameterized by the matrix elements of local operators O_i. For the computation of these matrix elements a bag factor B_i can be introduced ⟨B|O_i|B⟩=B_i⟨B|O_i|B⟩^fac, which is unity in naive factorization. Any deviation from unity describes the accuracy of the naive factorization prescription. Corrections to B_i emerge from QCD radiative corrections and from nonperturbative contributions at order 1/m_b. We present the current status of these corrections to B_i.