scholarly journals Heavy-Quark Mass and Heavy-Meson Decay Constants from QCD Sum Rules

2011 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Heavy Quark ◽  
Quark Mass ◽  
Sum Rules ◽  
Heavy Meson ◽  
Meson Decay ◽  
Qcd Sum Rules ◽  
Decay Constants ◽  
Heavy Quark Mass

scholarly journals Heavy-meson decay constants from QCD sum rules

2010 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula ◽  
Leonardo Angelini ◽  
Pietro Colangelo ◽  
...  
Keyword(s):  
Sum Rules ◽  
Heavy Meson ◽  
Meson Decay ◽  
Qcd Sum Rules ◽  
Decay Constants

scholarly journals Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules

2017 ◽  
Vol 137 ◽  
pp. 06017
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Sum Rules ◽  
Heavy Meson ◽  
Meson Decay ◽  
Isospin Breaking ◽  
Qcd Sum Rules ◽  
Decay Constants

scholarly journals B meson decay constants f B c $$ {f}_{B_c} $$ , f B s $$ {f}_{B_s} $$ and f B from QCD sum rules

2014 ◽  
Vol 2014 (7) ◽  
Author(s):  
M. J. Baker ◽  
J. Bordes ◽  
C. A. Dominguez ◽  
J. Peñarrocha ◽  
K. Schilcher
Keyword(s):  
B Meson ◽  
Sum Rules ◽  
Meson Decay ◽  
Qcd Sum Rules ◽  
B Meson Decay ◽  
Decay Constants

CHARM AND BEAUTY IN SUM RULES FROM SIMPLE MODELS

1998 ◽  
Vol 13 (13) ◽  
pp. 1035-1039
Author(s):  
JISHNU DEY ◽  
B. C. SAMANTA
Keyword(s):  
Simple Model ◽  
Heavy Quark ◽  
Quark Mass ◽  
Sum Rules ◽  
Heavy Quark Mass ◽  
Near Future ◽  
Simple Models

There is information (and more will be known) about baryons containing one charm and beauty quark. A simple model of the charm and beauty baryons is found to give results which support the recent findings of other models including the 1/MQ expansion of QCD, where MQ is the heavy quark mass. Sum rules are found from the simple model which can be tested in the near future.

scholarly journals HEAVY PSEUDOSCALAR-MESON DECAY CONSTANTS WITH STRANGENESS FROM THE EXTENDED NONLOCAL CHIRAL-QUARK MODEL

2012 ◽  
Vol 27 (27) ◽  
pp. 1250153 ◽  
Author(s):  
SEUNG-IL NAM
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Weak Decay ◽  
Heavy Meson ◽  
Effective Field ◽  
Numerical Results ◽  
Meson Decay ◽  
Chiral Quark Model ◽  
Decay Constants ◽  
Pseudoscalar Mesons

We study the weak-decay constants for the heavy pseudoscalar mesons, D, Ds, B and Bs. For this purpose, we employ the extended nonlocal chiral-quark model (ExNLChQM), motivated by the heavy-quark effective field theory as well as the instanton-vacuum configuration. In addition to the heavy-quark symmetry and the nonlocal interactions between quarks and pseudoscalar mesons in ExNLChQM, a correction for the strange-quark content inside Ds and Bs is also taken into account and found to be crucial to reproduce the empirical values. From those numerical results, we obtain fD, Ds, B, Bs = (207.53, 262.56, 208.13, 262.39) MeV , which are in good agreement with experimental data and other theoretical estimations. Using those numerical results, we estimate the CKM matrix elements and the Cabibbo angle with the various mesonic and leptonic heavy-meson decay channels, resulting in (|Vcd|, |Vcs|, |Vub|, |Vtd|/|Vts|) = (0.224, 0.968, <5.395×10-3, 0.215) and θC = 12.36° which are well compatible with available data.

scholarly journals Beauty vector meson decay constants from QCD sum rules

2016 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Vector Meson ◽  
Sum Rules ◽  
Meson Decay ◽  
Qcd Sum Rules ◽  
Decay Constants

scholarly journals Charmed-Meson Decay Constants from Improved QCD Sum Rules

2012 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Sum Rules ◽  
Meson Decay ◽  
Charmed Meson ◽  
Qcd Sum Rules ◽  
Decay Constants
Sign in / Sign up

Export Citation Format

Share Document