scholarly journals Masses and decay constants of bound states containing fourth family quarks from QCD sum rules

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
V. Bashiry ◽  
K. Azizi ◽  
S. Sultansoy
Keyword(s):  
Bound States ◽  
Sum Rules ◽  
Qcd Sum Rules ◽  
Decay Constants

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 Thermal Properties of Light Tensor Mesons via QCD Sum Rules

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
K. Azizi ◽  
A. Türkan ◽  
E. Veli Veliev ◽  
H. Sundu
Keyword(s):  
Thermal Properties ◽  
Finite Temperature ◽  
Sum Rules ◽  
Temperature Dependent ◽  
Qcd Sum Rules ◽  
Continuum Threshold ◽  
Decay Constants ◽  
Good Consistency ◽  
Theoretical Predictions ◽  
The Masses

The thermal properties off2(1270),a2(1320), andK2*(1430) light tensor mesons are investigated in the framework of QCD sum rules at finite temperature. In particular, the masses and decay constants of the light tensor mesons are calculated taking into account the new operators appearing at finite temperature. The numerical results show that, at the point at which the temperature-dependent continuum threshold vanishes, the decay constants decrease with amount of (70–85)% compared to their vacuum values, while the masses diminish about (60–72)% depending on the kinds of the mesons under consideration. The results obtained at zero temperature are in good consistency with the experimental data as well as the existing theoretical predictions.

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

scholarly journals Decay constants of the charmed vector mesons D⁎ and Ds⁎ from QCD sum rules

2014 ◽  
Vol 735 ◽  
pp. 12-18 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Sum Rules ◽  
Vector Mesons ◽  
Qcd Sum Rules ◽  
Decay Constants

scholarly journals Strong decay constants of heavy tensor mesons in light cone QCD sum rules

2016 ◽  
Vol 2016 (4) ◽  
pp. 1-16 ◽  
Author(s):  
H. A. Alhendi ◽  
T. M. Aliev ◽  
M. Savcı
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
Strong Decay ◽  
Qcd Sum Rules ◽  
Decay Constants

scholarly journals Analysis of the heavy quarkonium states hc and hb with QCD sum rules

2014 ◽  
Vol 29 ◽  
pp. 1460233
Author(s):  
Zhi-Gang Wang ◽  
Shu-Yuan Guo
Keyword(s):  
Experimental Data ◽  
Sum Rules ◽  
P Wave ◽  
Heavy Quarkonium ◽  
Qcd Sum Rules ◽  
Decay Constants ◽  
Spin Singlet ◽  
Structure Formula ◽  
Quark Structure ◽  
The Masses

In this article, we take the tensor currents [Formula: see text] to interpolate the P-wave spin-singlet heavy quarkonium states hQ, and study the masses and decay constants with the Borel sum rules and moments sum rules. The masses and decay constants from the Borel sum rules and moments sum rules are consistent with each other, the masses are also consistent with the experimental data. The heavy quarkonium states hQ couple potentially to the tensor currents [Formula: see text], and have the quark structure ϵijkξ†σkζ besides the quark structure [Formula: see text].

scholarly journals Isospin breaking in the decay constants of heavy mesons from QCD sum rules

2017 ◽  
Vol 765 ◽  
pp. 365-370 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Sum Rules ◽  
Isospin Breaking ◽  
Qcd Sum Rules ◽  
Heavy Mesons ◽  
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
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