Showing papers on "Mass formula published in 1985"
TL;DR: In this article, it was shown that baryons carrying heavy flavors, such as strangeness and charm, can be described by bound states of the corresponding heavy mesons in the background field of the basic SU(2) skyrmion.
260 citations
TL;DR: In this paper, the radiative SU(2) × U(1) breaking induced by broken N = 1 supergravity in the light of recent experimental results is examined. But the experimental results (t-quark mass) constrain the supergravity parameters, particularly the bare higgsino mass μ0 and the mixing Higgs mass term μ32.
223 citations
TL;DR: In this paper, the massless and massive bosonic and fermionic modes on S4 are determined using the formalism of spherical harmonics, and a detailed discussion is given of the conformal symmetries which survive the gauge fixing and which are needed to eliminate spurious scalar modes.
Abstract: Using the formalism of spherical harmonics, the massless and massive bosonic and fermionic modes on S4 are determined. As on S7, there are extra massless scalar modes, but unlike on S7 there are no scalar modes with negative adS(mass)2, nor any with a conformally invariant field equation. A detailed discussion is given of the conformal symmetries which survive the gauge fixing and which are needed to eliminate spurious scalar modes. Also the diagonalisation of the massive spin-2 and spin-3/2 modes, and of the coupled spin-1 modes, is discussed.
86 citations
TL;DR: In this paper, a Wess-Zumino chiral effective action describes the low-lying mesons and baryons, which appear as solitons, as a dynamical result of QCD in two dimensions.
74 citations
TL;DR: The mass excesses of members of T = 1 2, 1, 3 2, and 2 multiplets are tabulated for A ⩽ 45 and the coefficients of the isobaric multiplet mass equation are evaluated as discussed by the authors.
44 citations
TL;DR: In this paper, the authors explored the SQCD examples of massive neutrinos (mν ∼ mef) and light spin-12 leptoquarks (m1q ⪅ 1 GeV) and showed that introducing additional elementary particles (spectators) can only be avoided at the price of introducing further elementary particles.
23 citations
TL;DR: In this article, an attempt is made for the determination of the well depth and other parameters by least square fitting to experimental binding energies (B∧) of the ∧ in hypernuclei.
Abstract: ∧ Woods-Saxon ∧-nucleus potential is considered and an attempt is made for the determination of the ∧ well depth and other parameters by leastsquare fitting to experimental binding energies (B∧) of the ∧ in hypernuclei. The expression for the half-way radius of the well employed is more complicated than the standard onec =r0∧3/1. The Walecka-type « semi-empirical mass formula » forB∧, derived by Deloff, is also discussed.
15 citations
TL;DR: A compact expression for the mass splittings of baryons and mesons is derived and it is shown that the mass splitting approaches the asymptotic limit within 0.3 MeV for a quark mass greater than 5 GeV.
Abstract: Following the previous proposal that isospin mass splittings of hadrons can be extracted in a model-independent way by the quark-mass interpolation scheme, we derived a compact expression for the mass splittings of baryons and mesons. We have shown that the mass splitting approaches the asymptotic limit within 0.3 MeV for a quark mass greater than 5 GeV. Therefore we can predict the isospin mass splittings of hadrons containing any unknown heavy quarks. In particular M/sup asterisk+/(ut-bar )-M/sup asterisk0/(dt-bar ) roughly-equalM/sup +/(ut-bar ) = -3.7 MeV.
11 citations
TL;DR: In this article, the Dirac-like equation was reformulated in phase space to yield a mass formula in satisfactory quantitative agreement with experimental data for families of baryons, and the proposed theoretical scheme gave also the possibility of calculating the radii of spin-1/2 baryon which were found to be of the order of 1 fm.
Abstract: The Dirac-like equation recently reformulated in phase space is shown to yield a mass formula in satisfactory quantitative agreement with experimental data for families of baryons. The proposed theoretical scheme gives also the possibility of calculating the radii of spin-1/2 baryons, which are found to be of the order of 1 fm.
9 citations
TL;DR: In this paper, the mass formula for the proton was derived, where Mz = 2(Mpα), 1/gc = 92.1 GeV, and α−1 = 137.5 GeV.
Abstract: The mass formulaMz= 2(Mpα)(1/gc = 92.1 GeV is derived, whereMp is the proton mass, χ= 2.79 the proton magnetic moment, and α−1 = 137.
5 citations
TL;DR: In this article, the chiral symmetry breaking at strong coupling in lattice QCD for naive and Wilson fermion cases is investigated by the Green function method with the Hartre-Fock approximation.
TL;DR: In this paper, the supersymmetric solitons with fractional charges were studied and the exact mass formula was proved, and a way for using fermionic fractional charge in the super-ymmetric quark bag model was shown.
Abstract: The supersymmetric solitons with fractional charges are studied. Exact mass formula is proved. A way for using fermionic fractional charges in the supersymmetric quark bag model is shown.
TL;DR: In this paper, it was shown that the Zitterbewegung effect increases the rest mass of a relativistic spin-1/2 particle by a 3/2 factor and this result was used to argue that the μ-lepton mass is a basic mass quantum for leptons and quarks.
Abstract: It is shown that theZitterbewegung effect increases the rest mass of a relativistic spin-1/2 particle by a 3/2 factor and this result is used to argue that the μ-lepton mass is a basic mass quantum for leptons and quarks.