Jul 10 – 17, 2019
Ghent
Europe/Brussels timezone

Nonfactorizable charm-loop effects in exclusive FCNC B-decays

Jul 13, 2019, 9:00 AM
20m
Campus Ledeganck - Aud. 5 (Ghent)

Campus Ledeganck - Aud. 5

Ghent

Parallel talk Flavour Physics and CP Violation Flavour Physics and CP Violation

Speaker

Dmitri Melikhov (HEPHY)

Description

We revisit the calculation of nonfactorizable corrections induced by charm-quark loops in exclusive FCNC $B$-decays. We demonstrate that the calculation of the corresponding correlation function requires the knowledge of the full generic three-particle quark-antiquark-gluon distribution amplitude of the B-meson with non-aligned arguments, $\langle 0| \bar q(x) G_{\mu\nu}(y)b(0)|B\rangle$. The dependence of this quantity on $(x − y)^2$ is essential for a proper account of large $(\Lambda_{QCD}m_b/m_c^2)^n$ terms in the amplitudes of exclusive FCNC $B$-decays.

Primary authors

Anastasiia Kozachuk (Lomonosov Moscow State University) Dmitri Melikhov (HEPHY)

Presentation materials