scholarly journals Ratio of kaon and pion leptonic decay constants with Nf=2+1+1 Wilson-clover twisted-mass fermions

2021 ◽  
Vol 104 (7) ◽  
Author(s):  
C. Alexandrou ◽  
S. Bacchio ◽  
G. Bergner ◽  
P. Dimopoulos ◽  
J. Finkenrath ◽  
...  
Keyword(s):  
Leptonic Decay ◽  
Decay Constants ◽  
Twisted Mass

scholarly journals Leptonic decay constants and in three flavor lattice QCD

2005 ◽  
Vol 140 ◽  
pp. 443-445 ◽  
Author(s):  
J.N. Simone ◽  
C. Aubin ◽  
C. Bernard ◽  
C. DeTar ◽  
M. di Pierro ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Leptonic Decay ◽  
Decay Constants

scholarly journals B - and D -meson leptonic decay constants from four-flavor lattice QCD

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
A. Bazavov ◽  
C. Bernard ◽  
N. Brown ◽  
C. DeTar ◽  
A. X. El-Khadra ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
D Meson ◽  
Leptonic Decay ◽  
Decay Constants ◽  
Four Flavor

Mass spectrum and leptonic decay constants of ground and radially excited states of ηc and ηb in a Bethe–Salpeter equation framework

2015 ◽  
Vol 24 (04) ◽  
pp. 1550030 ◽  
Author(s):  
Hluf Negash ◽  
Shashank Bhatnagar
Keyword(s):  
Mass Spectrum ◽  
Excited States ◽  
Ground State ◽  
Reasonable Agreement ◽  
Equal Mass ◽  
Leptonic Decay ◽  
Decay Constants ◽  
Pseudoscalar Mesons

In this paper, we study the mass spectrum and decay constants of ground state (1S) and radially excited states (2S and 3S) of heavy equal mass pseudoscalar mesons, ηc and ηb. We have employed the framework of Bethe–Salpeter equation (BSE) under Covariant Instantaneous Ansatz (CIA). Our predictions are in reasonable agreement with the data on available states and results of other models.

scholarly journals Leptonic decay constants for D-mesons from 3-flavour CLS ensembles

2018 ◽  
Vol 175 ◽  
pp. 13019
Author(s):  
Sara Collins ◽  
Kevin Eckert ◽  
Jochen Heitger ◽  
Stefan Hofmann ◽  
Wolfgang Söldner
Keyword(s):  
Large Volume ◽  
D Mesons ◽  
Leptonic Decay ◽  
Tree Level ◽  
Open Boundary ◽  
Open Boundary Conditions ◽  
Gauge Action ◽  
Decay Constants ◽  
Ongoing Effort ◽  
The Status

e report on the status of an ongoing effort by the RQCD and ALPHA Collaborations, aimed at determining leptonic decay constants of charmed mesons. Our analysis is based on large-volume ensembles generated within the CLS effort, employing Nf = 2 + 1 non-perturbatively O(a) improved Wilson quarks, tree-level Symanzik-improved gauge action and open boundary conditions. The ensembles cover lattice spac-ings from a ≈ 0.09 fm to a ≈ 0.05 fm, with pion masses varied from 420 to 200 MeV. To extrapolate to the physical masses, we follow both the (2ml + ms) = const. and the ms = const. lines in parameter space.

Leptonic decay constants of charm and beauty mesons in QCD

1987 ◽  
Vol 197 (3) ◽  
pp. 423-429 ◽  
Author(s):  
C.A. Dominguez ◽  
N. Paver
Keyword(s):  
Leptonic Decay ◽  
Decay Constants ◽  
Beauty Mesons

scholarly journals The leptonic decay constants of $$\bar Qq$$ mesons and the lattice resolution

1994 ◽  
Vol 62 (4) ◽  
pp. 659-668 ◽  
Author(s):  
C. Alexandrou ◽  
S. Güsken ◽  
F. Jegerlehner ◽  
K. Schilling ◽  
G. Siegert ◽  
...  
Keyword(s):  
Leptonic Decay ◽  
Decay Constants ◽  
Lattice Resolution
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