scholarly journals Charmonium-Pion Cross Section from QCD Sum Rules

2002 ◽  
Author(s):  
F. S. Navarra
Keyword(s):  
Cross Section ◽  
Sum Rules ◽  
Qcd Sum Rules

scholarly journals CHARMONIUM - PION CROSS SECTION FROM QCD SUM RULES

2003 ◽  
Author(s):  
F.S. NAVARRA ◽  
M. NIELSEN ◽  
R.S. MARQUES DE CARVALHO ◽  
G. KREIN
Keyword(s):  
Cross Section ◽  
Sum Rules ◽  
Qcd Sum Rules

scholarly journals Charmonium–pion cross section from QCD sum rules

2002 ◽  
Vol 529 (1-2) ◽  
pp. 87-92 ◽  
Author(s):  
F.S. Navarra ◽  
M. Nielsen ◽  
R.S. Marques de Carvalho ◽  
G. Krein
Keyword(s):  
Cross Section ◽  
Sum Rules ◽  
Qcd Sum Rules

scholarly journals PRECISION DETERMINATION OF αs AND mb FROM QCD SUM RULES FOR $b\bar b$

1995 ◽  
Vol 10 (19) ◽  
pp. 2865-2880 ◽  
Author(s):  
M.B. VOLOSHIN
Keyword(s):  
Cross Section ◽  
Quark Mass ◽  
Sum Rules ◽  
Production Cross ◽  
Experimental Uncertainty ◽  
Qcd Sum Rules ◽  
Precision Determination ◽  
B Quark ◽  
Existing Data

The QCD sum rules for moments of the production cross section of [Formula: see text] states in e+ e− annihilation are extremely sensitive to the values of mb and αs for moments of large order n. This enables one to extract from the existing data on ϒ resonances the values of these parameters with a high precision by using a nonrelativistic expansion in 1/n. It is found that the sum rules fit the data with [Formula: see text] and mb=4827±7 MeV, where the estimate of the errors includes the theoretical uncertainty due to subleading-in-1/n terms and the experimental uncertainty of the e+ e− annihilation cross section above the [Formula: see text] threshold. The found value of αs, when evolved in two loops up to the Z mass, gives [Formula: see text]. The b quark mass mb corresponds to the “on-shell” value appropriate for one-loop perturbative calculations.

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.

pentaquarks in QCD sum rules

2010 ◽  
Vol 835 (1-4) ◽  
pp. 342-345
Author(s):  
Philipp Gubler ◽  
Daisuke Jido ◽  
Toru Kojo ◽  
Tetsuo Nishikawa ◽  
Makoto Oka
Keyword(s):  
Sum Rules ◽  
Qcd Sum Rules
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