Heretofore Undocumented Mass-Magnetic Moment Power Curves and Their Relation to Particles and Nuclei of the Same Spin State (original) (raw)
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Note on the Magnetic Moment of the Nucleon
1942
The Goldberger-Treiman relation M = 2π/ √ 3 f cl π where M is the constituent quark mass in the chiral limit (cl) and f cl π the pion decay constant in the chiral limit predicts constituent quark masses of m u = 328.8±1.1 MeV and m d = 332.3±1.1 MeV for the up and down quark, respectively, when f cl π = 89.8 ± 0.3 MeV is adopted. Treating the constituent quarks as bare Dirac particles the following zero order values µ (0) p = 2.850 ± 0.009 and µ (0) n = −1.889 ± 0.006 are obtained for the proton and neutron magnetic moments, leading to deviations from the experimental data of 2.0% and 1.3%, respectively. These unavoidable deviations are discussed in terms of contributions to the magnetic moments proposed in previous work.
On the structure of electrons and other charged leptons
A model of the electron is examined, allowing us to obtain its mass, spin and magnetic moment. The electron is represented as a sphere of classical radius (protoelektron) with zero rest mass, the rotating orbit radius of which is reduced value of the Compton wavelength of the electron. The ratio of the radius of the sphere to the radius of the orbit is equal the fine structure constant. The sphere has a single charge distributed over its surface. Due mutual repulsion of parts of charge sphere acquires a mass equal to half of the rest mass of an electron. Rotating mechanical mass protoelektron on orbit provides its characteristic electron spin 1/2 and kinetic energy, which creates 1/4 of the rest mass. Rotation of charge, similar to the ring current generates a magnetic moment equal to the Bohr magneton and magnetic energy, creating 1/4 of the rest mass of an electron. The total energy of the electron is the sum of its electrostatic, magnetic and kinetic energy. Accordingly, the total mass of the electron is the sum of the masses of electrostatic, magnetic and kinetic origin. The model is applicable to the muon and tau leptons. The correct ratio between the mass, spin and magnetic moment for them observed under the condition in the ratio of the radius of the charged sphere to the radius of the orbit equal to the fine structure constant. The model allows us to understand the physical nature of a number of problems: the Heisenberg uncertainty principle, Lorentz transformations and wave properties of the electron. The cause of the orbital rotation proto-particles is a magnetic field which creates self-acting rotation proto-particles around its own axis. Content
arXiv: High Energy Physics - Phenomenology, 2019
We show that the magnetic moment of leptons is significantly modified in thermal background as compared to the corresponding vacuum value. We compare the magnetic moment of all different leptons near nucleosynthesis. It is shown that the significance of thermal corrections depends on the temperature of the universe and the respective lepton mass. In the early universe, particle mass was growing quadratically with temperature which affects the corresponding value of magnetic moment. Intrinsic magnetic moment is inversely proportional to mass whereas thermal corrections to the neutrino dipole moment is proportional to neutrino mass for the Dirac type neutrino in the minimal standard model. Therefore the effect of temperature is not the same for charged leptons and neutrinos.
The Electric Charge and Magnetic Moments of the Electron, Proton, and Neutron
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In this paper, we use the MS system of units to physically explain the electric charge and magnetic moments of the electron, proton, neutron and muon using the volumes, radii and masses associated with these particles. The "Metre-Second System of Units" (MS system) is a novel approach to units of measurement in that it describes all physical properties in terms of two fundamental units of measurement that being distance in metres (m) and time in seconds (s). The kilogram (kg), Ampere (A), Coulomb (C), and the Kelvin (K) of the SI system of units are changed from fundamental units to derived units. Other systems of units suffer from an issue referred to as "numerical and dimensional shift". This issue unknowingly alters the interpretation of physics to the point where the dimensional units of certain physical properties no longer correspond with reality. The goal of the MS system is to reveal this issue and provide an alternative system of units which is better able to describe and interpret electromagnetic phenomena without the limitations and inherent difficulties found in other systems of units. This new system uses a "dimensioned" fine structure constant to offset the condition known as dimensional shift. It also features the MS Table which is a distance-time dimensionality matrix which visually maps out and shows how physical properties relate to one another. _______________________________________________________________________
Preliminary results from E756 on the Xi and Omega magnetic moments
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We have used the spin precession technique to measure the Xi- and Omega- magnetic moments. The preliminary results are mu(Xi-)=-0.64+/-0.02 nuclear magnetons and mu(Omega-)=-2.0+/-0.2 nuclear magnetons where the error for both measurements is statistical. The polarization of Xi-'s produced at 2.5 mr by 800 GeV protons on a Be target was 11% while the polarization of Omega-'s was consistent with zero. Polarized Xi-'s and Omega-'s were produced using spin transfer from a polarized neutral hyperon beam. The Omega- polarization at 325 GeV/c was 6.5%.
Comparative study of magnetic moment of leptons in hot and dense media
International Journal of Modern Physics A
We study the magnetic moment of leptons in extremely hot universe and superdense media of stars at high temperatures. Anomalous magnetic moment of charged leptons is inversely proportional to its mass, whereas the induced dipole moment of neutral leptons is directly proportional to their mass. Neutral massive point particles exert nonzero magnetic moment as a higher order effect, which is smaller than the anomalous magnetic moment of a charged particle of their same flavor partner. All leptons acquire some extra mass due to their interaction with the medium and affect the magnetic moment accordingly. We compare the contribution to the magnetic moment of various leptons due to their temperature and chemical potential dependent masses. It is shown that the magnetic moment contributions are nonignorable for lighter leptons and heavy neutrinos. These calculations are very important to study the particle propagation in the early universe and in superdense stellar media.
Journal of the Korean Physical Society, 2020
The present paper reports on the spin-parities and the magnetic moments for the ground states of 44 proton-rich isotopes with Z = 21 − 30 and A = 36 − 57, which are important for studies of either reaction rates in X-ray bursts or nuclear structure. These nuclear properties were calculated based on the single-particle shell model. The spins of the concerned nuclei were compared to available experimental data adopted from the NuDat database to evaluate the variations in the astrophysical rates of the rp-process reactions. We found discrepancies, due to the deformed nuclear structure, between the present results and those reported in the NuDat database. The spin uncertainties result in large variations, 13%-200%, in the astrophysical rates of the rp-process reactions. In particular, the spin uncertainties of the 44 V and the 46−49 Mn isotopes significantly affect the astrophysical rates of the reverse reactions of the proton captures 43 Ti(p, γ) 44 V(p, γ) 45 Cr, 45 Cr(p, γ) 46 Mn(p, γ) 47 Fe, 47 Mn(p, γ) 48 Fe, 47 Cr(p, γ) 48 Mn(p, γ) 49 Fe, and 48 Cr(p, γ) 49 Mn(p, γ) 50 Fe. Moreover, the magnetic moments of most of the isotopes were predicted for the first time. The results show that the magnetic moments are in the order of μp(1f 7/2) > μp(2p 3/2) > μn(1d 3/2) > μn(1f 7/2) for the nuclei having an unpaired nucleon in the proton/neutron shells. The present study suggests that reliable calculations and/or measurements for the properties of proton-rich nuclei are highly demanded.