Chiral aspects of baryon structure in the quark model

Details Chiral aspects of baryon structure in the quark model Chiral aspects of baryon structure in the quark model

2000-04-25

arxiv.org/abs/hep-ph/0004229v2

Phys.Lett. B494 (2000) 58-62

Physics

High Energy Physics

High Energy Physics - Phenomenology

Discussion of the axial vector charge of the nucleon has been slightly modified

Scientific paper

10.1016/S0370-2693(00)01170-9

The implications of chiral symmetry for the quark model are discussed. In particular its connection with the meson-baryon approach is outlined. It is stressed that in the closure approximation, where the intermediate baryon states are used instead of the original quark basis, it is imperative to take into account the whole infinite tower of the radially excited states in order that the crucially important effects related to the short-range part of the meson-exchange interaction be preserved. It is shown that the chiral constituent quark model is able to explain the nucleon axial vector coupling constant and automatically incorporates all the necessary loop corrections.

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