scholarly journals Peturbative gluon exchange in a covariant quark model of the pion

1990 ◽  
Author(s):  
Hiroshi Ito ◽  
W.W. Buck ◽  
F. Gross
Keyword(s):  
Quark Model ◽  
Gluon Exchange ◽  
Covariant Quark Model

Properties of strangelets at zero temperature in a new quark mass confinement model

2014 ◽  
Vol 23 (03) ◽  
pp. 1450013 ◽  
Author(s):  
Shiwu Chen ◽  
Qin Li ◽  
Jianfeng Xu ◽  
Li Gao ◽  
Chengjun Xia
Keyword(s):  
Quark Model ◽  
Quark Mass ◽  
Present Model ◽  
Baryon Number ◽  
Zero Temperature ◽  
Gluon Exchange ◽  
The Stability ◽  
Stable Radius ◽  
Confinement Model

We investigate the properties of strangelets at zero temperature with a new quark model in which the linear confinement and one-gluon-exchange (OGE) interactions are integrated as a whole. The charge, parameters dependence and the stability of strangelets are discussed. Our results showed that the OGE interaction lowers the energy of a strangelet, and consequently makes its stable radius smaller than that in the case of not including this interaction, and less than that of a nucleus with the same baryon number. Therefore, the strangelet in the present model has more chance to be absolutely stable.

THE CHIRAL QUARK MODEL AND BARYON PHENOMENOLOGY

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1785-1790 ◽  
Author(s):  
D. O. RISKA
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Axial Current ◽  
Chiral Quark Model ◽  
Pion Decay ◽  
Decay Widths ◽  
Nucleon Form Factors ◽  
Baryon Spectra ◽  
Baryon Resonances ◽  
Covariant Quark Model

The chiral quark model posits that pions couple to the axial current of constituent quarks. This chiral pion coupling governs the pion decays of baryon resonances and also implies pion and multipion interactions between the quarks. The qualitative features of this model for the description of pionic decay widths and baryon spectra are outlined. When the covariant quark model wave function for the nucleon is chosen so as to describe the empirical nucleon form factors the pion decay widths of the positive parity resonances are underpredicted. This indicates the presence of significant multiquark components in these resonances.

scholarly journals Description of hadrons with Covariant Quark Model

2014 ◽  
Vol 81 ◽  
pp. 05021
Author(s):  
A. Liptaj ◽  
M. A. Ivanov ◽  
S. Dubnička ◽  
A. Z. Dubničková
Keyword(s):  
Quark Model ◽  
Covariant Quark Model

scholarly journals Chiral dynamics of baryons in a Lorentz covariant quark model

2006 ◽  
Vol 73 (11) ◽  
Author(s):  
Amand Faessler ◽  
Th. Gutsche ◽  
V. E. Lyubovitskij ◽  
K. Pumsa-ard
Keyword(s):  
Quark Model ◽  
Covariant Quark Model

scholarly journals Mass spectra and decays of ground and orbitally excited cb̄ states in nonrelativistic quark model

2017 ◽  
Vol 32 (04) ◽  
pp. 1750021 ◽  
Author(s):  
Antony Prakash Monteiro ◽  
Manjunath Bhat ◽  
K. B. Vijaya Kumar
Keyword(s):  
Quark Model ◽  
Mass Spectra ◽  
Radiative Decay ◽  
Weak Decay ◽  
Exchange Potential ◽  
Complete Spectrum ◽  
Confinement Potential ◽  
Gluon Exchange ◽  
Nonrelativistic Quark Model ◽  
Decay Widths

The complete spectrum of [Formula: see text] states is obtained in a phenomenological nonrelativistic quark model (NRQM), which consists of a confinement potential and one gluon exchange potential (OGEP) as effective quark–antiquark potential. We make predictions for the radiative decay (E1 and M1) widths and weak decay widths of [Formula: see text] states in the framework of NRQM formalism.

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