Proton (uud)
Neutron** (udd)
Isospin=1/2
Mass m=938.27231 ±0.00028
MeV (=1836 electron masses)
Electric momentum D= (-3,7±6,3)x10-23 e
cm
Magnetic momentum m= 2,792847386 ± 0,000000066 μB
Lifetime t=1,6x1025 yr
(>>age of the Universe =14,5x109 yr)
Isospin=1/2
Mass m=939.56563 ±0.00028
MeV (a bit more than proton)
Electric momentum D< 12x10-26 ecm
Magnetic momentum m= -1,91304275±0,000000456 μB
Electric charge q=(-0,4±1,1)x10-21 e
(read: zero!)
Lifetime t=888,65 ± 3,5 s (= academic quarter!)
Proton (a) and D+ particle
are built in the same way - with two “up” quarks and one “down” quark.
The only difference is in spin, what causes that the
D+ particle is 30% heavier than proton.