The logarithmic compressive strength of quantum space imparts mass to particle. If particles are tightly connected to each other, their sum mass should be calculated as logarithmic masses. If particles are free from each other, their sum mass should be calculated as arithmetic masses. Proton is composed of two up quarks, one down quark, one strong particle force, and one electromagnetic particle force. From the logarithmic masses, the proton was calculated as 89.8% mass of the measured value. Here, 5D dark force acts to the electromagnetic particle force, and the proton mass was calculated as 98.3% of the measured value. 6D dark force also acts to the strong particle force, and the proton mass was calculated as 99.8% of the measured value. Calculating this inversely, the mass of down quark was calculated as 4.756 MeV. Neutron is composed of one proton, one electron, and one shell anti-brane. Here, the electron is held in the form of particle inside neutron by the observer effect of the shell brane. The difference between the calculated mass and the measured mass of neutron was +8,966 eV. This value is the separating energy of shell brane, which is the reason of negative beta decay. From weak force fw times 1/2 hydrogen radius rH is equal to electromagnetic force fe times 4π/3 proton radius rP, the proton radius was calculated as 0.8746E-15 m in kinetic state and 0.8437E-15 m in steady state. From electromagnetic force fe times 1/2 proton radius rP is equal to strong force fs times 4π/3 quarks radius rQ, the up quark radius rU was calculated as 0.4398E-18 m in kinetic state and 0.4243E-18 m in steady state. All values in physics have two kinds of kinetic state and steady state.