FIZIKA B 7 (1998) 3, 127-138

NUCLEON STATIC PROPERTIES IN A TAMM-DANCOFF INSPIRED APPROXIMATION

DUBRAVKO HORVAT^a, BORIS PODOBNIK^b and DUBRAVKO TADIĆ^b

e-mail addresses:  dubravko.horvat@fer.hr  bp@phy.hr tadic@phy.hr

^aDepartment of Physics, Faculty of Electrical Engineering and Computing,
University of Zagreb, 10000 Zagreb, Croatia
^bDepartment of Physics, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia

Received 16 June 1998; Accepted 9 November 1998

A version of the chiral bag model, which contains the linear s-model dynamics and is quantized by using the constituent quark operators, has been solved using a Tamm-Dancoff inspired approximation. Model gives reasonable values for the axial coupling constant g_A = Du-Dd = 1.28, for the combination h_A^S = Du+Dd = 0.38, and for the proton magnetic moment m_p = 2.77. These values, which match the combinations Du±Dd of the quark density functions, are consequences of the chiral character of the model.

PACS numbers: 11.30.Rd, 12.39.Ba, 12.39.Fe, 14.20.Dh

UDC 539.125, 539.126

Keywords: chiral bag model, the linear s-model dynamics, constituent quark operators, Tamm-Dancoff approximation, axial coupling constant, proton magnetic moment, chirality

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr