Nucleon mass difference and off-shell form factors

1981 ◽  
Vol 66 (4) ◽  
pp. 450-458 ◽  
Author(s):  
I. Kimel
Keyword(s):  
Mass Difference ◽  
Form Factors ◽  
Nucleon Mass ◽  
Shell Form

Estimate of the Nucleon Mass Difference from Hofstadter's New Form Factors

1961 ◽  
Vol 124 (4) ◽  
pp. 1203-1204 ◽  
Author(s):  
H. Katsumori ◽  
M. Shimada
Keyword(s):  
Mass Difference ◽  
Form Factors ◽  
Nucleon Mass ◽  
New Form

Remarks on the Nucleon Mass Difference

1967 ◽  
Vol 158 (5) ◽  
pp. 1600-1607
Author(s):  
J. Rix
Keyword(s):  
Mass Difference ◽  
Nucleon Mass

scholarly journals Asymptotic Behavior of Off-Mass-Shell Form Factors

1973 ◽  
Vol 49 (5) ◽  
pp. 1755-1757
Author(s):  
Kazo Nakazawa
Keyword(s):  
Asymptotic Behavior ◽  
Mass Shell ◽  
Form Factors ◽  
Shell Form

ON THE POSSIBLE EXISTENCE OF A DERIVATIVE COUPLING IN QUANTUM ELECTRODYNAMICS

1959 ◽  
Vol 37 (12) ◽  
pp. 1339-1343
Author(s):  
F. A. Kaempffer
Keyword(s):  
Cross Section ◽  
Quantum Electrodynamics ◽  
Mass Difference ◽  
Large Mass ◽  
The Self ◽  
Nucleon Mass ◽  
Muon Scattering ◽  
Derivative Coupling ◽  
Self Energy ◽  
Classical Analogue

Within the framework of quantum electrodynamics there exists the possibility of a derivative coupling between source and photon field, referred to as eΛ-charge, which has no classical analogue. For calculations the usual graph technique can be used, provided the factor eγμ contributed by each vertex in a conventional graph is replaced by ieΛkμ, where Λ is a length characteristic of the new interaction. Using as cutoff the nucleon mass M one finds for a bare source of electronic mass m the self-energy in second order to be Λm/m ≈ 200, if Λ−1 ≈ 60 M. It is argued that the large mass difference between muon and electron may be due to this effect, assuming muon and electron to differ only in that the muon has eΛ-charge whereas the electron has not. An estimate is made of the muon–muon scattering cross section caused by the presence of eΛ-charge on the muon, and it is found that the existence of this derivative coupling may have escaped observation.

scholarly journals Eta Prime Gluonic Contribution to the Nucleon Self-Energy in an Effective Theory

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
A. Upadhyay ◽  
J. P. Singh
Keyword(s):  
Charge Density ◽  
Topological Charge ◽  
Form Factors ◽  
Heavy Baryon ◽  
Effective Theory ◽  
Nucleon Mass ◽  
Total Contribution ◽  
Self Energy ◽  
Qcd Vacuum ◽  
The One

We estimate a possibleη′gluonic contribution to the self-energy of a nucleon in an effective theory. The couplings of the topological charge density to nucleons give rise to OZI violatingη′-nucleon interactions. The one-loop self-energy of nucleon arising due to these interactions is studied using a heavy baryon chiral perturbation theory. The divergences have been removed using appropriate form factors. The nontrivial structure of the QCD vacuum has also been taken into account. The numerical results are sensitive to the choice of the regulator to a nonnegligible extent. We get the total contribution to the nucleon mass coming from its interaction with the topological charge densityδmtot≅-(2.5–7.5)% of the nucleon mass.

On the off-mass-shell form factors of the nucleon

1970 ◽  
Vol 65 (4) ◽  
pp. 597-606 ◽  
Author(s):  
A. Komatsuzawa ◽  
K. Nakazawa ◽  
R. Sugano
Keyword(s):  
Mass Shell ◽  
Form Factors ◽  
Shell Form

Off-Shell Form Factors for Composite Hadrons and Exclusive Processes in Electroproduction

1973 ◽  
Vol 7 (11) ◽  
pp. 3372-3379 ◽  
Author(s):  
J. Sucher ◽  
C. H. Woo
Keyword(s):  
Form Factors ◽  
Shell Form ◽  
Exclusive Processes

scholarly journals Some Considerations on the High-Energy Electron-Proton Scattering and the Nucleon Mass Difference

1957 ◽  
Vol 18 (5) ◽  
pp. 451-461 ◽  
Author(s):  
Kichiro Hiida ◽  
Makoto Sawamura
Keyword(s):  
Mass Difference ◽  
High Energy ◽  
Energy Electron ◽  
Nucleon Mass ◽  
Proton Scattering ◽  
High Energy Electron
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