scholarly journals S-wave Colour Singlet States of Multiquark Configurations

1978 ◽  
Vol 31 (2) ◽  
pp. 117 ◽  
Author(s):  
BG Wybourne
Keyword(s):  
Mass Spectra ◽  
S Wave ◽  
Bag Model ◽  
Colour Singlet ◽  
Singlet States ◽  
Mit Bag Model ◽  
The Masses

Simple methods for determining and systematically labelling the S-wave colour singlet states of multiquark configurations are developed and results are given for the quark configurations QN (N = 0 (mod 3)) and for the quark-antiquark configurations Q2Q2, Q4Q and Q3Q3. The masses of the colour singlet states associated with the Q6 and Q9 configurations are calculated using the MIT bag model and a number of conclusions concerning these mass spectra are drawn.

STATISTICAL BAG MODEL FOR BARYONS AND THEIR RESONANCES

1990 ◽  
Vol 05 (30) ◽  
pp. 2537-2542 ◽  
Author(s):  
M. RAJASEKARAN ◽  
N. MEENAKUMARI ◽  
V. DEVANATHAN
Keyword(s):  
Experimental Data ◽  
Statistical Theory ◽  
Excited States ◽  
Degrees Of Freedom ◽  
Bag Model ◽  
Mit Bag Model ◽  
The Masses

Incorporating the effects of spin and isospin degrees of freedom in the MIT bag model, the masses of the ground and excited states of baryons are investigated in the framework of a statistical theory. The results are found to agree reasonably well with the experimental data.

Multiquark colour-hyperfine spectra in the bag model: a survey with the P-matrix formalism

1983 ◽  
Vol 309 (1510) ◽  
pp. 611-641 ◽  
Keyword(s):  
Magnetic Interaction ◽  
Magnetic Contribution ◽  
Matrix Formalism ◽  
S Wave ◽  
Bag Model ◽  
Gluon Exchange ◽  
Multiquark States ◽  
P Matrix ◽  
The Masses ◽  
Proper Account

The masses of S-wave q 2 q 2 , q 4 q and q 6 multiquark states have been calculated in the M.I.T. bag model after taking proper account of flavour symmetry violations in the single-gluon-exchange magnetic contribution. Mixing induced by the flavour dependence of the colour-magnetic interaction strengths raises some degeneracies and inverts a few levels but does not otherwise greatly affect the masses. However, the mixing does in a few cases result in very substantial changes in the eigenfunctions. These effects are surveyed and the masses and dissociation couplings for the most important states are examined using the P-matrix formalism.

scholarly journals Colour?Spin Matrix Elements for Multiquark Systems

1980 ◽  
Vol 33 (6) ◽  
pp. 951 ◽  
Author(s):  
RP Bickerstaff ◽  
BG Wybourne
Keyword(s):  
Classification Scheme ◽  
Spin Operator ◽  
Tensor Operator ◽  
Matrix Elements ◽  
S Wave ◽  
Strange Quarks ◽  
Colour Singlet ◽  
Singlet States ◽  
The Matrix ◽  
Relevant Interaction

Tensor operator methods have been developed for calculating the matrix elements of the two-particle colour-spin operator that arises in the calculation of the quark-gluon interaction in the MIT bagmodel treatment of the S-wave colour singlet states of multiquark hadrons. A group classification scheme for multi quark states which distinguishes the nonstrange and strange quarks, and thus avoids the occurrence of hidden strangeness ss pairs, is constructed. This scheme has the added advantage of avoiding any need to approximate the strangeness dependence of the relevant interaction integrals. The colour-spin matrix elements for all the q4 if colour singlet states and for the strangeness - 2 states of q6 are given by way of examples. A number of checking procedures have been developed to ensure the correctness of the calculated matrix elements.

scholarly journals The masses of Dsj∗(2317) and Dsj∗(2463) in the MIT bag model

2004 ◽  
Vol 579 (1-2) ◽  
pp. 39-42 ◽  
Author(s):  
Mariusz Sadzikowski
Keyword(s):  
Bag Model ◽  
Mit Bag Model ◽  
The Masses

scholarly journals Quark cores in extensions of the MIT Bag model

2021 ◽  
Author(s):  
Salil Joshi ◽  
Sovan Sau ◽  
Soma Sanyal
Keyword(s):  
Bag Model ◽  
Mit Bag Model

Phenomenological surface inertia in the MIT bag model

1983 ◽  
Vol 27 (11) ◽  
pp. 2708-2714 ◽  
Author(s):  
P. J. Mulders ◽  
G. Bhamathi ◽  
L. Heller ◽  
A. T. Aerts ◽  
A. K. Kerman
Keyword(s):  
Bag Model ◽  
Mit Bag Model

Microcosmos and Macrocosmos: A Look at these Two Universes in a Unified Way

1997 ◽  
Vol 12 (07) ◽  
pp. 1373-1384 ◽  
Author(s):  
P. R. Silva
Keyword(s):  
Strong Interaction ◽  
Gravitational Force ◽  
Inertial Mass ◽  
Hadronic Matter ◽  
Vacuum Pressure ◽  
Bag Model ◽  
Small Oscillations ◽  
Mit Bag Model ◽  
Two Universes ◽  
The Universe

An extension of the MIT bag model, developed to describe the strong interaction inside the hadronic matter (nucleons), is proposed as a means to account for the confinement of matter in the universe. The basic hypotheses of the MIT bag model are worked out in a very simplified way and are also translated in terms of the gravitational force. We call the nucleon "microcosmos" and the bag-universe "macrocosmos." We have found a vacuum pressure of 10-15 atm at the boundary of the bag-universe as compared with a pressure of 1029 atm at the boundary of the nucleon. Both universes are also analyzed in the light of Sciama's theory of inertia, which links the inertial mass of a body to its interaction with the rest of the universe. One of the consequences of this work is that the Weinberg mass can be interpreted as a threshold mass, namely the mass where the frequency of the small oscillations of a particle coupled to the universe matches its de Broglie frequency. Finally, we estimate an averaged density of matter in the universe, corresponding to [Formula: see text] of the critical or closure density.

The strong decays ϱ→2π and Δ→Nπ in the MIT bag model

1977 ◽  
Vol 40 (2) ◽  
pp. 135-140 ◽  
Author(s):  
J. Katz ◽  
S. Tatur
Keyword(s):  
Bag Model ◽  
Mit Bag Model
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