Remarks on the electromagnetic decays of the neutral pion

2021 ◽  
pp. 2150123
Author(s):  
Stanley A. Bruce
Keyword(s):  
Chiral Symmetry ◽  
Neutral Pion ◽  
Classical Electrodynamics ◽  
Dirac Field ◽  
Electromagnetic Decays

We propose a simple classical electrodynamics model in which a Lorentz pseudoscalar field and a Dirac field are present in the general Lagrangian of the system. The model is constructed by allowing explicit violation of chiral symmetry. This approach is intended to predict possible electromagnetic decays of the neutral pion in effective terms.

NEUTRAL PION PHOTOPRODUCTION ON THE PROTON AND THE CLOUDY-BAG MODEL

1992 ◽  
Vol 07 (21) ◽  
pp. 5231-5244
Author(s):  
A.N. TABACHENKO
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Electric Dipole ◽  
Neutral Pion ◽  
Chiral Symmetry Breaking ◽  
Pion Photoproduction ◽  
Additional Contribution ◽  
Bag Model ◽  
Neutral Pions ◽  
Quark Masses

In the cloudy-bag model, the value of the electric dipole amplitude of the photoproduction of neutral pions off protons at threshold connected with the additional contribution from the chiral symmetry breaking interaction is evaluated. If this additional contribution is included in the amplitude of the photoproduction of neutral pions off protons at threshold, the discrepancy between the LET predictions and the measured value of the electric dipole amplitude [Formula: see text] can be resolved for the values of quark masses and bag radii which are close to the generally used values.

scholarly journals Electromagnetic decays of the neutral pion investigated in the Dyson-Schwinger formalism

2018 ◽  
Vol 1024 ◽  
pp. 012032
Author(s):  
Esther Weil ◽  
Gernot Eichmann ◽  
Christian S. Fischer ◽  
Richard Williams
Keyword(s):  
Neutral Pion ◽  
Electromagnetic Decays

scholarly journals Electromagnetic decays of the neutral pion

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
Esther Weil ◽  
Gernot Eichmann ◽  
Christian S. Fischer ◽  
Richard Williams
Keyword(s):  
Neutral Pion ◽  
Electromagnetic Decays

Classical electrodynamics of a nonlinear Dirac field with anomalous magnetic moment

1974 ◽  
Vol 10 (2) ◽  
pp. 517-525 ◽  
Author(s):  
Antonio F. Rañada ◽  
Manuel F. Rañada ◽  
Mario Soler ◽  
Luis Vázquez
Keyword(s):  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Classical Electrodynamics ◽  
Dirac Field
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