THE MASS OF A QUARK–SQUARK BOUND STATE FROM QCD SUM RULES

1999 ◽  
Vol 14 (30) ◽  
pp. 4763-4780
Author(s):  
M. MEYER-HERMANN ◽  
A. SCHÄFER
Keyword(s):  
Sum Rules ◽  
Mass Range ◽  
Bound State ◽  
Higher Order ◽  
Qcd Sum Rules ◽  
Mass Effects ◽  
Squark Mass

We give an estimate of the expected mass range for a possible two-quark two-squark bound state, using QCD sum rules. The sum rules are modified, taking mass effects into account, so that a treatment of heavy squarks becomes justified. The influence of the higher-order mass corrections and the possibility of a bound state mass below the squark mass are discussed.

scholarly journals Exploring a $$\Sigma _{c}\bar{D}$$ state: with focus on $$P_{c}(4312)^{+}$$

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
Jian-Rong Zhang
Keyword(s):  
Experimental Data ◽  
Sum Rules ◽  
Mass Range ◽  
Lhcb Collaboration ◽  
Qcd Sum Rules ◽  
Hadronic System ◽  
New Discovery

AbstractStimulated by the new discovery of $$P_{c}(4312)^{+}$$Pc(4312)+ by LHCb Collaboration, we endeavor to perform the study of $$P_{c}(4312)^{+}$$Pc(4312)+ as a $$\Sigma _{c}\bar{D}$$ΣcD¯ state in the framework of QCD sum rules. Taking into account the results from two sum rules, a conservative mass range $$4.07{\sim }4.97~\text{ GeV }$$4.07∼4.97GeV is presented for the $$\Sigma _{c}\bar{D}$$ΣcD¯ hadronic system, which agrees with the experimental data of $$P_{c}(4312)^{+}$$Pc(4312)+ and could support its interpretation as a $$\Sigma _{c}\bar{D}$$ΣcD¯ state.

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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