The ρ-meson electromagnetic mass splitting

1966 ◽  
Vol 43 (3) ◽  
pp. 553-575 ◽  
Author(s):  
D. S. Beder
Keyword(s):  
Mass Splitting ◽  
Electromagnetic Mass

THE ρ0-ρ± ELECTROMAGNETIC MASS SPLITTING

2002 ◽  
Vol 17 (11) ◽  
pp. 659-666 ◽  
Author(s):  
DAO-NENG GAO ◽  
MU-LIN YAN
Keyword(s):  
Theoretical Prediction ◽  
Mass Splitting ◽  
Electromagnetic Mass ◽  
Systematic Method ◽  
The One

A systematic method developed by us to evaluate the one-loop electromagnetic self-energies of the low-lying mesons is extended to the case of the ρ-meson. The theoretical prediction of ρ0-ρ± electromagnetic mass splitting is about 0.62 MeV, which is in agreement with the measurements.

Electromagnetic mass differences in mesons

2001 ◽  
Vol 9 (0) ◽  
pp. 150-154
Author(s):  
О. О. Шпеник ◽  
М. Д. Меліка
Keyword(s):  
Electromagnetic Mass

scholarly journals Xenon-1T excess as a possible signal of a sub-GeV hidden sector dark matter

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Amin Aboubrahim ◽  
Michael Klasen ◽  
Pran Nath
Keyword(s):  
Dark Matter ◽  
Particle Physics ◽  
Small Mass ◽  
Big Bang ◽  
Mass Splitting ◽  
Recoil Energy ◽  
Dirac Fermions ◽  
Dark Sector ◽  
Dark Photon ◽  
Physics Model

Abstract We present a particle physics model to explain the observed enhancement in the Xenon-1T data at an electron recoil energy of 2.5 keV. The model is based on a U(1) extension of the Standard Model where the dark sector consists of two essentially mass degenerate Dirac fermions in the sub-GeV region with a small mass splitting interacting with a dark photon. The dark photon is unstable and decays before the big bang nucleosynthesis, which leads to the dark matter constituted of two essentially mass degenerate Dirac fermions. The Xenon-1T excess is computed via the inelastic exothermic scattering of the heavier dark fermion from a bound electron in xenon to the lighter dark fermion producing the observed excess events in the recoil electron energy. The model can be tested with further data from Xenon-1T and in future experiments such as SuperCDMS.

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