The nucleon wave function in light-front dynamics

Authors
Citation
Va. Karmanov, The nucleon wave function in light-front dynamics, NUCL PHYS A, 644(3), 1998, pp. 165-200
Citations number
24
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
644
Issue
3
Year of publication
1998
Pages
165 - 200
Database
ISI
SICI code
0375-9474(199812)644:3<165:TNWFIL>2.0.ZU;2-B
Abstract
The general spin structure of the relativistic nucleon wave function in the 3q-model is found. it contains 16 spin components, in contrast to the 8 al ready known. This follows from the fact that in a many-body system parity c onservation does not reduce the number of components. The explicitly covari ant form of the wave function automatically takes into account the relativi stic spin rotations, without introducing any Melosh rotation matrices. It a lso reduces the calculations to the standard routine of the Dirac matrices and of the trace techniques. In examples of the proton magnetic moment and of the axial nucleon form factor, with a particular wave function, we repro duce the results of the standard approach. Calculations beyond the standard assumptions give different results. (C) 1998 Elsevier Science B.V.