c B-decay: Ap -[z+AD]*+-ie+v QB-/c2=M(EP)-[M(z+4D1*)+mB-+my M(2p)-[(M(Z+D)-me]+mB-+mi M(aP)-M(+AD) The mass of the neutrino is negligibly small eB-/c2=M(2P)-M(z+1D)-E /c2 Cl(3724m) B max B 1(319% -3810 kev 2(105%)7619%) 2167 65(576%)Y(424%) 、=4917 Ar(stable)c) The mass of the neutrino is negligibly small