Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-04-26
Phys.Atom.Nucl. 60 (1997) 1333-1343; Yad.Fiz. 60N8 (1997) 1470-1480
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 3 figures, LaTeX 2.09, 4 eps files included using epsf.sty
Scientific paper
The QCD-motivated constituent string model is extended to consider the baryon. The system of three quarks propagating in the confining background field is studied in the Wilson loop approach, and the effective action is obtained. The resulting Lagrangian at large interquark distances corresponds to the Mercedes Benz string configuration. Assuming the quarks to be heavy enough to allow the adiabatic separation of quark and string junction motion and using the hyperspherical expansion for the quark subsystem we write out and solve the classical equation of motion for the junction. We quantize the motion of the junction and demonstrate that the account of these modes leads to the effective "swelling" of the baryon in comparison with the standard potential picture. We discuss the effects of the finite gluonic correlation length which do not affect the excited states but appear to be substantial for the baryonic ground state, reducing the "swelling" considerably and leaving room to the short range Coulomb force in the three quark system.
Kalashnikova Yu S.
Nefediev A. V.
No associations
LandOfFree
QCD string in the baryon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with QCD string in the baryon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QCD string in the baryon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-485489