scholarly journals Accurate decay-constant ratiosfB*/fBandfBs*/fBsfrom Borel QCD sum rules

2015 ◽  
Vol 91 (11) ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Decay Constant ◽  
Sum Rules ◽  
Qcd Sum Rules

The Mass and Leptonic Decay Constant of D[sub s0](2317) Meson in the Framework of Thermal QCD Sum Rules

2010 ◽  
Author(s):  
Elşen Veli Veliev ◽  
Gülşah Kaya ◽  
Volker Crede ◽  
Paul Eugenio ◽  
A. Ostrovidov
Keyword(s):  
Decay Constant ◽  
Sum Rules ◽  
Leptonic Decay ◽  
Qcd Sum Rules

scholarly journals RELATION BETWEEN QUARK AND GLUON CONDENSATES FROM QCD SUM RULES

2006 ◽  
Vol 21 (32) ◽  
pp. 6693-6698 ◽  
Author(s):  
S. S. AFONIN
Keyword(s):  
Decay Constant ◽  
Sum Rules ◽  
Meson Decay ◽  
Meson Mass ◽  
Qcd Sum Rules ◽  
Gluon Condensates ◽  
Planar Limit

It is shown that QCD sum rules in the planar limit lead to a certain relation between four important quantities: ρ-meson mass, weak π-meson decay constant, quark and gluon condensates. As a byproduct an explanation for the dominance of ρρ-decay for the f0(1370)-meson is proposed.

scholarly journals Hot medium effects on pseudotensor K2(1820) meson

2019 ◽  
Vol 199 ◽  
pp. 03007 ◽  
Author(s):  
A. Türkan ◽  
H. Dağ ◽  
J.Y. Süngü ◽  
E. Veli Veliev
Keyword(s):  
Thermal Properties ◽  
Phase Transitions ◽  
Finite Temperature ◽  
Decay Constant ◽  
Sum Rules ◽  
Medium Effects ◽  
Qcd Sum Rules ◽  
Qcd Vacuum

The investigation of mesons in hot medium can give valuable information about the nature of QCD vacuum and deconfinement phase transitions. In this study, thermal properties of pseudotensor K2(1820) meson is examined via QCD sum rules at finite temperature. The mass and the decay constant of K2(1820) are estimated up to dimension-five by considering the new operators emerging at finite temperature. It is seen that after a certain temperature, the decay constant and the mass decrease significantly due to the hot medium effects.

scholarly journals QCD sum rules for parameters of the B -meson distribution amplitudes

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Muslem Rahimi ◽  
Marcel Wald
Keyword(s):  
B Meson ◽  
Sum Rules ◽  
Qcd Sum Rules

scholarly journals The field strength correlator from QCD sum rules

2000 ◽  
Vol 86 (1-3) ◽  
pp. 421-425 ◽  
Author(s):  
M. Eidemüller ◽  
H.G. Dosch ◽  
M. Jamin
Keyword(s):  
Field Strength ◽  
Sum Rules ◽  
Qcd Sum Rules

scholarly journals The Radiative Δ(1600) → γN Decay in the Light-Cone QCD Sum Rules

Universe ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 255
Author(s):  
Haifa I. Alrebdi ◽  
Thabit Barakat
Keyword(s):  
Decay Rate ◽  
Light Cone ◽  
Magnetic Dipole Moment ◽  
Sum Rules ◽  
Electric Quadrupole ◽  
The Other ◽  
Electric Quadrupole Moment ◽  
Multipole Moments ◽  
Qcd Sum Rules ◽  
Strongly Agree

Within the framework of the light-cone QCD sum rules method (LCSR’s), the radiative Δ(1600)→γN decay is studied. In particular, the magnetic dipole moment GM1(0) and the electric quadrupole moment GE1(0) are estimated. We also calculate the ratio REM=−GE1(0)GM1(0) and the decay rate. The predicted multipole moments and the decay rate strongly agree with the existing experimental results as well as with the other available phenomenological approaches.

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