Nonfactorizable charming loops in FCNC B decays versus B -decay semileptonic form factors
- Author(s)
- Dmitri Melikhov
- Abstract
We compare a nonfactorizable charming-loop correction to an exclusive FCNC B decay given in terms of the three-particle Bethe-Salpeter amplitude (3BS) of the B meson, «0|q¯(x)Gμν(z)b(0)|B(p)», with the corresponding correction to the B-meson semileptonic form factor. In spite of certain similarities, these two corrections are shown to have substantial differences: the form-factor correction is dominated by the collinear light-cone configuration of 3BS (zμ=uxμ, 0<u<1, x2=0); in contrast, the FCNC amplitude is dominated by a different configuration with noncollinear arguments [x2=0, z2=0, but (x-z)2≠0 (i.e., zμ≠uxμ)].
- Organisation(s)
- Particle Physics
- External organisation(s)
- Anuchin Research Institute and Museum of Anthropology, Universität Wien, Joint Institute for Nuclear Research
- Journal
- Physical Review D
- Volume
- 106
- No. of pages
- 9
- ISSN
- 2470-0010
- DOI
- https://doi.org/10.1103/PhysRevD.106.054022
- Publication date
- 09-2022
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103034 Particle physics
- ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/nonfactorizable-charming-loops-in-fcnc-b-decays-versus-b-decay-semileptonic-form-factors(89762e34-e485-4efb-89b0-80fdb6acdade).html