Precise ratios of decay constants of vector over pseudoscalar B_(s) mesons

Autor(en)

Wolfgang Lucha, Dmitri Melikhov, Silvano Simula

Abstrakt

The relative magnitude of the decay constants of the pseudoscalar and vector beauty mesons poses (in contrast to the case of charmed mesons) a long-standing puzzle. We revisit this problem within the framework of our recent improvements of the QCD sum-rule formalism for relating observable properties of mesons to quantum chromodynamics and are led to conclude that the decay constants of the beauty vector mesons are undoubtedly smaller than those of their pseudoscalar counterparts.

Organisation(en)

Teilchenphysik

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), Lomonosov Moscow State University (MSU), Istituto Nazionale di Fisica Nucleare (INFN), Roma

Journal

Proceedings of Science (PoS)

Band

234

Anzahl der Seiten

7

DOI

https://doi.org/10.22323/1.234.0532

Publikationsdatum

2016

Peer-reviewed

Ja

ÖFOS 2012

103034 Teilchenphysik

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/precise-ratios-of-decay-constants-of-vector-over-pseudoscalar-bs-mesons(1a9e3196-c52a-45ca-a727-f3886ad18cb1).html