CHIRAL LAGRANGIAN WITH VECTOR AND AXIAL-VECTOR MESON FOR PI(-PI(0) MASS DIFFERENCE())

Authors
PHAM TN
Citation
Tn. Pham, CHIRAL LAGRANGIAN WITH VECTOR AND AXIAL-VECTOR MESON FOR PI(-PI(0) MASS DIFFERENCE()), Physics letters. Section B, 374(1-3), 1996, pp. 205-209
Citations number
15
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
374
Issue
1-3
Year of publication
1996
Pages
205 - 209
Database
ISI
SICI code
0370-2693(1996)374:1-3<205:CLWVAA>2.0.ZU;2-H
Abstract
It is shown that the simple expression for the forward virtual Compton scattering on a soft pion for the pi(+) - pi(0) electromagnetic mass difference calculation usually obtained from Current Algebra and Weinb erg sum rules can be derived in a simple manner from a chiral Lagrangi an with vector and axial vector mesons. We also discuss the relation b etween the chiral Lagrangian approach and the dispersion relation for the Compton amplitude.