Static properties of the nucleon octet in a relativistic potential model with center-of-mass correction

1985 ◽  
Vol 31 (7) ◽  
pp. 1652-1656 ◽  
Author(s):  
N. Barik ◽  
B. K. Dash ◽  
M. Das
Keyword(s):  
Potential Model ◽  
Center Of Mass ◽  
Static Properties ◽  
Mass Correction ◽  
Relativistic Potential

THE FUZZY BAG MODEL REVISITED

2002 ◽  
Vol 17 (09) ◽  
pp. 543-553 ◽  
Author(s):  
F. PILOTTO ◽  
C. A. Z. VASCONCELLOS ◽  
H. T. COELHO
Keyword(s):  
Functional Form ◽  
Potential Model ◽  
Center Of Mass ◽  
Momentum Conservation ◽  
Radial Dependence ◽  
Bag Model ◽  
New Feature ◽  
The Masses ◽  
Relativistic Potential ◽  
Energy Momentum Conservation

In this work we develop a new version of the fuzzy bag model. The new feature is the inclusion of energy–momentum conservation. This turns the model into a "real" bag model, as opposed to a relativistic potential model. One immediate consequence is that the bag constant B will acquire a radial dependence, B = B(r), whose functional form can be completely fixed without any arbitrariness. Such a feature is of importance in the study of neutron stars, where a radial dependence of B is usually put in by hand. The parameters of the model are found by fitting the masses of the baryon octet. We include center-of-mass, one-gluon exchange and pion exchange corrections for these masses.

Center-of-mass corrections in a relativistic potential model

1986 ◽  
Vol 34 (7) ◽  
pp. 2168-2171 ◽  
Author(s):  
B. E. Palladino ◽  
P. Leal Ferreira
Keyword(s):  
Potential Model ◽  
Center Of Mass ◽  
Relativistic Potential

MAGNETIC MOMENTS OF OCTET BARYONS IN A RELATIVISTIC POTENTIAL MODEL WITH PIONIC AND CENTER OF MASS CORRECTIONS

1994 ◽  
Vol 09 (03) ◽  
pp. 327-339 ◽  
Author(s):  
N. BARIK ◽  
S.N. JENA ◽  
D.P. RATH
Keyword(s):  
Experimental Data ◽  
Reasonable Agreement ◽  
Potential Model ◽  
Magnetic Moments ◽  
Center Of Mass ◽  
Mass Motion ◽  
Quark Potential ◽  
Phenomenological Potential ◽  
Relativistic Potential ◽  
Octet Baryons

The magnetic moments of the octet baryons are calculated in a chiral symmetric inde-pendent quark potential model of the form [Formula: see text] The residual interaction arising from the quark-pion coupling over and above the dominant confining one represented by this phenomenological potential, is treated as a low order perturbation. The correction due to center of mass motion is also taken into account appropriately. The results are in reasonable agreement with the experimental data.

Chiral particle/Photon emission from heavy-light mesons

2014 ◽  
Vol 29 ◽  
pp. 1460239
Author(s):  
Takayuki Matsuki ◽  
Kohichi Seo
Keyword(s):  
Radiative Decay ◽  
Potential Model ◽  
Lorentz Invariance ◽  
Photon Emission ◽  
Wave Functions ◽  
Relativistic Wave ◽  
Decay Widths ◽  
Light Mesons ◽  
Relativistic Potential

Partial decay widths of the heavy-light mesons, D, Ds, B, and Bs, emitting one chiral particle (π or K) or photon γ are evaluated in the framework of a relativistic potential model. Decay amplitudes are calculated by keeping the Lorentz invariance as far as possible and use has been made of the Lorentz-boosted relativistic wave functions of the heavy-light mesons. One of predictions of our calculation is very narrow widths of a few keV for yet undiscovered Bs(0+, 1+) mesons corresponding to 2S+1LJ = 3P0 and "3P1" assuming their masses to be 5617 and 5682 MeV, respectively, as calculated in our former paper. Sizable radiative decay widths of D* or [Formula: see text] are obtained by including the 1st order corrections in 1/mQ expansion, in the unit of keV; Γ(D*0 → D0 + γ) = 9.8, Γ (D*+ → D+ + γ) = 0.71, [Formula: see text] and large radiative decay widths of DsJ are obtained compared with non-relativistic results.

( q q ¯ ) -pion mass and decay constant in a relativistic independent-quark model

2009 ◽  
Vol 87 (11) ◽  
pp. 1171-1180
Author(s):  
S. N. Jena ◽  
M. K. Muni ◽  
H. R. Pattnaik
Keyword(s):  
Decay Constant ◽  
Potential Model ◽  
Pion Mass ◽  
Center Of Mass ◽  
Mass Motion ◽  
Pion Decay ◽  
Pion Decay Constant ◽  
Symmetric Potential ◽  
Physical Mass ◽  
The Masses

The mass and decay constant of the [Formula: see text]-pion together with the masses of ρ and ω mesons are calculated in a chiral symmetric potential model of independent quarks, taking into account the corrections due to the possible residual interactions, such as quark–pion coupling arising out of the requirement of chiral symmetry and quark gluon coupling arising out of one-gluon-exchange, and that due to the spurious center-of-mass motion of the meson core. The effective potential representing phenomenologically the nonperturbative gluon interactions, including gluon self coupling, is chosen with equally mixed scalar and vector parts in a logarithmic form. The result obtained for the physical mass of [Formula: see text]-pion is consistent with that of the PCAC-pion, and the pion-decay constant reasonably agrees with experiment.

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