منابع مشابه
Photon-Neutrino Interactions in Magnetic Field through Neutrino Magnetic Moment
We study the neutrino-photon processes like γγ → νν̄ in the presence of uniform external magnetic field for the case when neutrinos can couple to the electromagnetic field directly through their dipole magnetic moment and obtain the stellar energy loss. The process would be of special relevance in astrophysical situations where standard left-handed neutrinos are trapped and the right handed neut...
متن کاملAstrophysical Bounds on the Photon Charge and Magnetic Moment
If the photon possessed an electric charge or a magnetic moment, light waves propagating through magnetic fields would acquire new quantum mechanical phases. For a charged photon, this is an Aharonov-Bohm phase, and the fact that we can resolve distant galaxies using radio interferometry indicates that this phase must be small. This in turn constrains the photon charge to be smaller that 10 e i...
متن کاملEffects of different Form-factors in Meson-Photon-Photon Transitions and the Muon Anomalous Magnetic Moment
The exact form of the form-factor associated with a meson-photon-photon vertex is not known. Different suggestions exist, based on constraints from QCD and on recent experiments. Four different form-factors are studied in this article. We calculate decay rates for the decays π → γγ, η → γ ee, η → μμ ee and η → ee ee and cross sections for the processes ee → PS ee, where PS = π, η or η. The resu...
متن کاملLimits on the magnetic moment of sterile neutrino and two-photon neutrino decay
It is shown that the non-zero transition magnetic moment (μtran) between the sterile neutrino (νs) and the muon neutrino (νμ) could be effectively searched for via the Primakoff effect, in the process of νμZ → νsZ conversion in the external Coulomb field of a nucleus Z, with the subsequent νs → νμ + γ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent cons...
متن کاملInelastic photon scattering and the magnetic moment of the ∆ ( 1232 ) resonance
The reaction γ+p → γ′+p+π0 has been suggested as a means to deduce the ∆+ magnetic moment. The cross section for this process is estimated in both the constituent quark model and an effective Lagrangian procedure. The resulting total cross section is of the order 5-10 nb, which is at the limit of present experimental capabilities. PACS : 12.39.Jh, 13.60.Fz, 14.20.Gk
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ژورنال
عنوان ژورنال: Journal of Modern Physics
سال: 2015
ISSN: 2153-1196,2153-120X
DOI: 10.4236/jmp.2015.67098