Fermion masses
暂无分享,去创建一个
In this paper, we show that 2memμ/(me2 +mμ2 = (gV/gA)eμ2. From this expression, the Weinberg mixing parameter is shown to be 0·2254 or 0·2746. Assuming that the electron and muon neutrino masses are degenerate, we find thatmv = (gV/gA)eμ2. (memμ)/MWL, where MWL is the mass of the standard W± boson. The neutrino mass turns out to be 6·5 eV. The τ-neutrino mass is found to be about 81 MeV. The masses of c, t, s and b quarks are found to be respectively 1·7 GeV, 21·2 GeV, 0·57 GeV and 2·18 GeV by assumingmd=mu= 0·3 GeV. All these masses agree with other estimates except the b quark which has about half of its expected value.