scholarly journals Finite-width effects on Delta baryons in QCD sum rules

2008 ◽  
Vol 801 (3-4) ◽  
pp. 142-153 ◽  
Author(s):  
G. Erkol ◽  
M. Oka
Keyword(s):  
Sum Rules ◽  
Finite Width ◽  
Qcd Sum Rules

scholarly journals Finite-width QCD sum rules for ρ and ω mesons

2004 ◽  
Vol 53 (1) ◽  
pp. 317-327 ◽  
Author(s):  
B Kämpfer ◽  
S Zschocke
Keyword(s):  
Sum Rules ◽  
Finite Width ◽  
Qcd Sum Rules

FORM FACTORS OF ργ*→π0and γγ*→π0TRANSITIONS FROM THE FINITE-WIDTH LIGHT-CONE LOCAL QCD SUM RULES

2006 ◽  
Vol 15 (05) ◽  
pp. 1115-1126 ◽  
Author(s):  
ZHENYU ZHANG ◽  
SHENGXI ZHANG ◽  
JUEPING LIU
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
Form Factors ◽  
Vector Meson Dominance ◽  
Theoretical Expression ◽  
Weight Functions ◽  
Finite Width ◽  
Qcd Sum Rules ◽  
Continuum Region ◽  
The Continuum

Instead of the usual zero-width approximation, the finite-width approximation for the resonance, the ρ-ω mesons, is used to investigate the light-cone local QCD sum rules for the form factors of the transitions, ργ*→π0and γγ*→π0. To be more certain, a product of two weight functions is chosen in the method of the analytic continuation by duality to annihilate the uncertainty in the continuum region and the integrand in the integration range not covered by vector-meson dominance and where the theoretical expression may least be trusted. The resultant form factors in the cases for the zero- and finite-widths are almost the same, both agree well with the experimental measurements, and comparison with the results from the Laplacian transformed light-cone sum rules and etc. is discussed.

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

String tension and plaquette-plaquette correlation from QCD sum rules

1986 ◽  
Vol 176 (3-4) ◽  
pp. 449-455 ◽  
Author(s):  
E. Bagán ◽  
J.I. Latorre
Keyword(s):  
Sum Rules ◽  
String Tension ◽  
Qcd Sum Rules
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