منابع مشابه
SU (3) breaking and baryon magnetic moments
We show that the magnetic moments of the octet baryons can be fitted to an accuracy of 1.5 % by a phenomenological Lagrangian in which SU(3) breaking corrections appear only linearly. This is in contrast to conventional chiral perturbation theory in which corrections non-analytic in SU(3) breaking dominate and tend to spoil the agreement with the data. Motivated by this observation, we propose ...
متن کاملOrigins of the Baryon Spectrum
I begin with a key problem of light and strange baryon spectroscopy which suggests a clue for our understanding of underlying dynamics. Then I discuss spontaneous breaking of chiral symmetry in QCD, which implies that at low momenta there must be quasiparticles constituent quarks with dynamical mass, which should be coupled to other quasiparticles Goldstone bosons. Then it is natural to assume ...
متن کاملLight baryon spectrum using improved interpolating operators
Lattice Hadron Physics Collaboration (LHPC): S. Basak,a R. G. Edwards,b G. T. Fleming,c J. Juge,d A. Lichtl,d C. Morningstard D. G. Richards,b I. Sato∗,e S. J. Wallace, f aDepartment of Physics, N.N.D. College, Calcutta 700092, India bThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA cYale University, New Haven, CT 06520, USA dDepartment of Physics, Carnegie Mellon Uni...
متن کاملSpectral patterns in the nonstrange baryon spectrum
We extract, from a quark model potential that reproduces the number and ordering of nonstrange baryonic resonances up to 2.3 GeV, the quantum numbers for the dominant configurations in the ground and first non-radial excited states. From the pattern of quantum numbers we identify, from data, spectral regularities that allow us to predict the expected high spin low-lying spectrum from 2.3 to 3.0...
متن کاملParity Doublets in the Baryon Spectrum
Physics of the low-lying and high-lying hadrons in the light flavors sector is reviewed. While the low-lying hadrons are strongly affected by both U(1) A and spontaneous SU(2) L × SU(2) R breakings, in the high-lying hadrons these symmetries are restored. A manifestation is a persistence of the chiral multiplet structure in both baryon and meson spectra. A fundamental origin of this phenomenon ...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1973
ISSN: 0033-068X
DOI: 10.1143/ptp.50.1418