The thesis of neutrinos with nonvanishing rest mass, newly considered in the literature, therefore requires a rediscussion of the early arguments concerning the relation between the neutrino theory and some weak interaction essentials. When one does this, as in the present paper, it is noted that...
Related to rest masses:rest energy,relativistic mass rest mass n. The physical mass of a body as measured by an observer who perceives the body as motionless. Rest mass is an inherent property of elementary particles. Also calledinvariant mass. ...
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n36420* --physics (nuclear)--nuclear properties & reactions, 20 <= a <= 89--radioactive decay beta decay energy mass neutrinos positrons sodium 22 spectra sodium isotopes na-22/beta decay of, $beta$$sup +$ spectra and endpoint energy for, (e neutrinos ($nu$/sub e/)/rest mass in ...
The beta-spectrum of tritium and the mass of the neutrino An upper limit of 250 volts or 0.05 percent of the mass of the electron is obtained for the rest mass of the neutrino. New estimates are obtained ... LM Langer,RJ Moffat - 《Phys Rev》 被引量: 78发表: 1952年 The upper limi...
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We can also explain the charge of the electron, the spin of the electron, of the muon and of the stable baryons, without any additional assumption. We also have determined the rest masses of the electron-, muon- and tau neutrinos and found that the mass of the electron neutrino is ...
What is the rest energy, expressed in MeV, of an electron? What is the rest energy, expressed in MeV, of a proton? Rest Energy: The rest energy of a particle is independent of the speed of the particle, but it is directly proportional to the ...
The π- rest mass has been determined from measurements of X-ray transitions in pionic atoms, using muonic transitions for the calibration, to be mπ-= 139.571 ± 0.010 MeV. A new upper limit for the μ-neutrino rest mass was deduced: mv<0.78 MeV at 90 per cent confidence.关键词:trans...
From values of the e-type neutrino rest mass 14 eV <= msub(ν) <= 46 eV claimed by Lyoubimov et al. (1980), we present constraints on leptonic assymetry via the degeneracy parameter xi and on the cosmological constant Δ. Limits obtained on xi (xi < 3,5) are more stringent than ...