Precise ratios of decay constants of vector over pseudoscalar B<sub>(s)</sub> mesons

Author(s)
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
Abstract

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(s)
Particle Physics
External organisation(s)
Österreichische Akademie der Wissenschaften (ÖAW), Anuchin Research Institute and Museum of Anthropology, Istituto Nazionale di Fisica Nucleare (INFN), Roma
Journal
Proceedings of Science (PoS)
Volume
234
No. of pages
7
DOI
https://doi.org/10.22323/1.234.0532
Publication date
2016
Peer reviewed
Yes
Austrian Fields of Science 2012
103034 Particle physics
ASJC Scopus subject areas
General
Portal url
https://ucrisportal.univie.ac.at/en/publications/precise-ratios-of-decay-constants-of-vector-over-pseudoscalar-bs-mesons(1a9e3196-c52a-45ca-a727-f3886ad18cb1).html