Weak axial exchange currents for the Bethe-Salpeter equation

Authors
Khanna, FC Truhlik, E
Citation
Fc. Khanna et E. Truhlik, Weak axial exchange currents for the Bethe-Salpeter equation, NUCL PHYS A, 673(1-4), 2000, pp. 455-478
Citations number
49
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
673
Issue
1-4
Year of publication
2000
Pages
455 - 478
Database
ISI
SICI code
0375-9474(20000619)673:1-4<455:WAECFT>2.0.ZU;2-0
Abstract
We construct weak axial one-boson exchange currents for the Bethe-Salpeter equation, starting from chiral Lagrangians of the N Delta(1236)pi rho a(1)o mega system. The currents fulfill the Ward-Takahashi identities and the mat rix element of the full current between the two-body solutions of the Bethe -Salpeter equation satisfies the PCAC constraint exactly. (C) 2000 Elsevier Science B.V. All rights reserved.