It is shown that using dispersion-theoretical formulas for the electromagnetic self-energies of the nucleons, which involve their electromagnetic form factors, the mass difference between the neutron and the proton can be satisfactorily explained. The expressions for the form factors involved have to ...
The calculations suggest that the mass of the nucleon (the calculation cannot distinguish between protons and neutrons) to be 936 MeV/C2 with statistical and systematic uncertainties of ±25 and ±22 MeV/C2 respectively. The known mass of the proton and neutron are 938 and 940 MeV/C2 respectiv...
doi:10.1016/0029-5582(60)90134-6A.R. BodmerElsevier B.V.Nuclear PhysicsBodmer, A R (1960), "Neutron and proton densities in nuclei and the semi-empirical mass formula," Nucl. Phys. 17 (0), 388-420.Bodmer, A. R. : Nucl. Phys. 17 (1960) 388....
Aproton(mass1.6726×10−27kg)andaneutron(mass1.6749×10−27kg)at rest interact to form a deuterium nucleus (heavy hydrogen).In this process,a gamma ray (high energy photon) is emitted.The energy of this gamma ray is measured to be 2.2MeV≡2.2×106 eV. a) What is the mass of the...
Neutron, neutral subatomic particle that, in conjunction with protons, makes up the nucleus of every atom except ordinary hydrogen (whose nucleus has one proton and no neutrons). Along with protons and electrons, it is one of the three basic particles ma
Question. Mn and Mp represent the mass of neutron and proton respectively. An element having mass M has N neutrons and Z protons, then the correct relation will be A(a) M (N- Mn + Z. Mp)(b) M {N Mn + Z.Mp)(c) M ={N Mn + Z - Mp)(d) M = N (Mn + Mp) 相关知识...
摘要: The proton charge form factor can be used to obtain the electromagnetic, one gluon exchange, and kinetic energy contributions to the neutron-proton mass difference, based on a quark picture of the nucleon.关键词: Theoretical or Mathematical/ form factors (elementary particles) mass ...
Neutrino mass, proton decay and dark matter in TeV scale universal extra dimension models We show how the problem of small neutrino masses and suppressed proton decay can be simultaneously resolved in 6D universal extra dimension models (UED's) ... RN Mohapatra,A Pérez-Lorenzana - 《Physical ...
NUCLEAR STRUCTURE He 3 - H 3 charge asymmetry, n - p mass difference. JL Friar,BF Gibson - 《Phys.rev.c》 被引量: 32发表: 1978年 Cross Section Data for Proton, 3He and α-Particle Induced Reactions on natNi, natCu and natTi for Monitoring Beam Performance For monitoring the beam pe...
Proton-Neutron Mass Difference by Electroweak Interactions The weak interaction due to different compositions of up and down quarks leads to the neutron-proton mass difference. The radius of the nucleon is fixed by the strong interaction. In a first calculation, the weak coupling is introduced b....