Strong Isospin Breaking in Heavy-Meson Decay Constants: Employing Borelized QCD Sum Rules in Local-Duality Limit

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

Applying the QCD sum-rule machinery in the so-called local-duality shape to heavy-light mesons reveals that, as a consequence of the non-zero mass gap between up and down quarks, the leptonic decay constants of the neutral and charged versions of the D, D*, B and B* mesons differ by approximately 1 MeV.

Organisation(s)
Particle Physics
External organisation(s)
Österreichische Akademie der Wissenschaften (ÖAW), Lomonosov Moscow State University (MSU), Universität Wien, Istituto Nazionale di Fisica Nucleare (INFN), Roma
Journal
EPJ Web of Conferences
Volume
192
No. of pages
7
ISSN
2101-6275
DOI
https://doi.org/10.1051/epjconf/201819200041
Publication date
11-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
103034 Particle physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/strong-isospin-breaking-in-heavymeson-decay-constants-employing-borelized-qcd-sum-rules-in-localduality-limit(96e76d71-bacc-4a17-a341-16fed1de64dd).html