Mp = mass of proton (2 up + 1 down) = 938.272 MeV/c^2
Mn = mass of neutron (1 up 2 down) = 939.566 MeV/c^2
http://en.wikipedia.org/wiki/Neutron
Shows neuron beta decay as the decay:
down -> up + electron + anti-neutrino
Green, in *The Fabric of the Cosmos* gives the mass of the up quark
as 0.0047 mass of proton, down quark as .0074 mass proton, electron
0.00054 mass proton. That gives Mu+Md = 0.0121 * mass proton, and Me
= 0.506667 MeV/c^2. We need a gamma of 82.6 to account for the
missing mass. From this we have
Mu = 4.40988 MeV/c^2
Mp = 6.94321 MeV/c^2
Diff = 2.53333 MeV/c^2
Interesting!
Mn - Mp = 2.98706 Mev/c^2
So some of the mass, 0.45373 MeV/c^2, comes from slowing down,
denergizing, the nucleus. This mass is strangely close to the mass
of the electron, 0.506667 MeV/c^2.
I obtained Mu = 312.628 MeV/c^2 vs wiki 1.5 - 4.0 Mev/c^2, Md =
313.471 MeV/c^2 vs wiki 4 - 8 Mev/c^2. Green's Mu is a bit out of
Wiki's range, but close.
Wiki says the chiral symmetry of quantum chromodynamics gives the ratio:
Mu/Md = 0.56
Green's masses yield Mu/Md = .0047/.0074 = 0.635, which does not
fully agree with Wiki.
Curiouser and curiouser.
Regards,
Horace Heffner
