A New Application of the Gursey and Radicati Mass Formula
TLDR
In this article, the spin and flavour-dependent SU(6) violations in the baryon spectrum were studied by means of a Gursey Radicati mass formula. And they were shown that the non strange and strange baryons masses are in general fairly well reproduced and moreover that the Gursey radicati formula holds in a satisfactory way also for the excited states up to 2 GeV.Abstract:
We study the spin- and flavour- dependent SU(6) violations in the baryon spectrum by means of a Gursey Radicati mass formula. The average energy of each SU(6)-multiplet is described using the SU(6) invariant interaction given by a hypercentral potential containing a linear and a hypercoulomb term. We show that the non strange and strange baryon masses are in general fairly well reproduced and moreover that the Gursey Radicati formula holds in a satisfactory way also for the excited states up to 2 GeV. The coefficients of the Gursey Radicati SU(6) breaking part obtained by the fit of the three-quark spectrum can be used to evaluate in first approximation the splitting within multiplets also for exotic baryon systems.read more
Citations
More filters
Journal ArticleDOI
Self-energies of octet and decuplet baryons due to the coupling to the baryon-meson continuum
TL;DR: In this paper, an unquenched quark model calculation of the mass shifts of ground-state octet and decuplet baryons due to their coupling to the meson-baryon continuum is presented.
Journal ArticleDOI
A study of a relativistic quark-diquark model for the nucleon
C. Gutierrez,M. De Sanctis +1 more
TL;DR: In this article, a specific quark-diquark constituent model for the study of the nucleon and its excited states is developed, where a relativistic kinetic energy operator is used for both the quark and the diquark.
Journal ArticleDOI
Spectroscopy of light {{N(*}}) baryons
TL;DR: In this paper, the masses of N baryons up to 3300 MeV were determined using hypercentral constituent quark model with the first-order correction, and the obtained masses were compared with the experimental results and other theoretical predictions.
Journal ArticleDOI
Electromagnetic transitions of the Roper resonance $\gamma^{\ast} p \rightarrow p_{11}(1440)$ γ * p → p 11 ( 1440 ) within the nonrelativistic quark model
Sara Parsaei,Ali Akbar Rajabi +1 more
TL;DR: In this paper, the scalar and transverse helicity amplitudes for the electroexcitation of the Roper resonance were derived for a simple, nonrelativistic three-body quark model and a hypercentral potential scheme for the internal baryon structure was proposed.
Journal ArticleDOI
Mass Spectra of Singly Beauty $$\varvec{\varOmega _b^{-}}$$ Ω b - Baryon
Zalak Shah,Ajay Kumar Rai +1 more
TL;DR: In this paper, the mass spectra of singly bottom baryon baryons is determined using the Hypercentral Constituent Quark Model using the hyper coulomb plus power potential.
References
More filters
Journal ArticleDOI
Baryons in a relativized quark model with chromodynamics
Simon Capstick,Nathan Isgur +1 more
TL;DR: The three quark system is studied in a relativized version of the quark potential model with chromodynamics and the spectrum of baryons is described with parameters consistent with those of an analogous study of meson spectroscopy.
Journal ArticleDOI
Hadron Masses in a Gauge Theory
TL;DR: In this paper, the authors explore the implications for hadron spectroscopy of the "standard" gauge model of weak, electromagnetic, and strong interactions, and use the asymptotic freedom of the model to argue that for the calculation of hadron masses, the short-range quark-quark interaction may be Coulomblike.
Journal ArticleDOI
P Wave Baryons in the Quark Model
Nathan Isgur,Gabriel Karl +1 more
TL;DR: In this article, the spectrum and mixing angles of negative-parity baryons in a quark-model framework inspired by quantum chromodynamics were discussed, and good agreement with experiment in the $S = 0$ and $S=\ensuremath{-}1$ sectors were obtained.
Journal ArticleDOI
Exotic anti-decuplet of baryons: prediction from chiral solitons
TL;DR: In this paper, the authors predict an exotic Z + baryon with spin 1/2, isospin 0 and strangeness + 1 with a relatively low mass of about 1530 MeV and total width of less than 15 MeV.
Journal ArticleDOI
The Spectrum of the nucleons and the strange hyperons and chiral dynamics
TL;DR: In this paper, the pseudoscalar exchange interaction splits the multiplets of SU (3) F × SU (2) S × U (6) conf in the spectrum, and the position of these multiplets differs in the baryon sectors with different strangeness.