Magnetic moments of light baryons in harmonic model

Khadkikar, S.B.; Gupta, S. K.

doi:10.1016/0370-2693(83)91566-6

Cited by 51 publications

(42 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the mass predictions, the nonrelativistic potential models [2,3,4,5,6,7,8] and the relativistic approaches [10,11]etc.,were successful at the heavy flavour sectors while the Bethe-Salpeter approach under harmonic confinement [9] was successful at low flavour sector. Some potential models have also predicted the masses and various decays of the heavy-heavy mesons which are in fair agreement with the experimental results [12,13,14,15,16,17,18,19,20,22]. A comprehensive review of developments in heavy quarkonium physics is available in ref [23].…”

Section: Introductionsupporting

confidence: 57%

Deacy of quark-antiquark mesons in NRQCD formalism

Kumar

Vinodkumar

Credé³

et al. 2010

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract.We investigate the decay properties of the quark-antiquark (cc)system using NRQCD formalism. The basic parameters for the decay of the cc states are obtained from phenomenological potential scheme of the type V (r) = − α c r +Ar ν , with ν varying from 0.5 to 2, which is employed to fit the low lying spectra. The resultant wave function and mass parameters are employed to determine the decay constants f P/V with and without QCD corrections. By incorporating the relativistic corrections of order v 4 to the heavy quarkonium decays into two photons, and the vector state into lepton pairs are computed within the NRQCD formalism. These decay widths are also investigated by incorporating radiative corrections up to the lowest order to the conventional Van Royen-Weisskopf formula. Our theoretical predictions of the decays of the cc meson for the potential index around 0.7 are comparable with other model predictions and with the experimental values.

show abstract

Section: Introductionsupporting

confidence: 57%

Deacy of quark-antiquark mesons in NRQCD formalism

Kumar

Vinodkumar

Credé³

et al. 2010

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…The first term in eq. (1), corresponds to the total confinement energy (total dynamical inertial mass) of the constituent quarks, which has been computed using a phenomenological model like the RHM [14]. The second term corresponds to the residual Coulomb energy among the confined constituent quarks.…”

mentioning

confidence: 99%

“…where the spin-hyperfine potential and the spin-orbit interaction of the residual (effective) confined one gluon exchange potential (COGEP) are given by [13][14][15][16][17][18] …”

mentioning

confidence: 99%

Masses of S and P wave mesons and pseudoscalar decay constants using a confinement scheme

Pandya

Vinodkumar

2001

Pramana - J Phys

View full text Add to dashboard Cite

In the framework of relativistic harmonic confinement model for quarks and antiquarks, the masses of S-and P-wave mesons and pseudoscalar decay constants from light flavour to heavy flavour sectors are computed. The residual two-body Coulomb interaction and the spin-dependent interaction of the confined one gluon exchange effects (COGEP) such as spin-spin and spin-orbit interactions are perturbatively incorporated with the confinement energy to get the respective vectorpseudoscalar meson mass differences. Here we employ the same parametrization and model parameters as used in a recent study of low-lying hadron masses and leptonic decay widths. The results are being compared with the values obtained from other theoretical models and the experimental values.There is a renewed interest in meson spectroscopy due to vast data of light flavour mesons to heavy flavour mesons from many experimental facilities world over [1][2][3][4][5]. Theoretically, our knowledge of hadron physics is mainly based on phenomenological quark confinement models [6-10], as the hadron domain generally falls in the non-perturbative regime of quantum chromodynamics. Though some of the successful models could reproduce the masses of the low-lying hadrons, their predictions for the excited states and decay properties of mesons were not satisfactory with respect to the experimental values [11,12]. The pseudoscalar decay constants of the heavy-light mesons have also been estimated in the context of many QCD-motivated approximations. The predictions for each of these constants cover a wide range of values from one model to another. They also predict different behaviours for the decay constants with increasing heavy quark mass. Phenomenologically, it is important to have reliable estimates of these decay constants as they are useful in many weak processes such as quark mixing, CP violation etc. Due to the availability of experimental data corresponding to L 1 mesonic states (P-wave mesons), it is necessary to predict these states from any successful phenomenological model.Recently, an attempt has been made to provide a unified confinement scheme for the study of hadrons from light flavour to heavy flavours. Based on this scheme, we have been able to predict the masses of open flavour hadrons and the leptonic decay widths of vector 821

show abstract

“…When the quarks are treated relativistically, the quark energy ~ 1/3 nucleon mass and this reduces the constituent quark mass. Khadkikar and Gupta [18] have shown in a relativistic potential model that with u and d quark masses 150 MeV, they are able to fit 9A as well as baryon masses a stiffer equation of state yields a smaller mass and radius of the hybrid star. This trend is opposite to the results for the neutron stars.…”

Section: Introductionmentioning

confidence: 98%

Hybrid stars and quark hadron phase transition in chiral colour dielectric model

Ghosh

Phatak

Sahu

1995

Z. Physik A - Hadrons and Nuclei

View full text Add to dashboard Cite

Abstract.We investigate the properties of hybrid stars consisting of quark matter in the core and hadron matter in outer region. The hadronic equation of state (EOS) is calculated by using nonlinear Walecka model. Strange baryons are included in the hadronic EOS calculation. The chiral colour dielectric (CCD) model, in which quarks are confined dynamically, is used to calculate quark matter EOS. We find that the phase transition from hadron to quark matter is possible in a narrow range of the parameters of nonlinear Walecka and CCD models. The transition is strong or weak first order depending on the parameters used. The EOS thus obtained, is used to study the properties of hybrid stars. We find that the calculated hybrid star properties are similar to those of pure neutron stars.

show abstract

Magnetic moments of light baryons in harmonic model

Cited by 51 publications

References 6 publications

Deacy of quark-antiquark mesons in NRQCD formalism

Deacy of quark-antiquark mesons in NRQCD formalism

Masses of S and P wave mesons and pseudoscalar decay constants using a confinement scheme

Hybrid stars and quark hadron phase transition in chiral colour dielectric model

Contact Info

Product

Resources

About