Weak axial exchange currents for the Bethe–Salpeter equation

✍ Scribed by F.C. Khanna; E. Truhlı́k

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 200 KB
• Volume: 673
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00060-9

✦ Synopsis

We construct weak axial one-boson exchange currents for the Bethe-Salpeter equation, starting from chiral Lagrangians of the N∆( 1236)πρa 1 ω system. The currents fulfill the Ward-Takahashi identities and the matrix element of the full current between the two-body solutions of the Bethe-Salpeter equation satisfies the PCAC constraint exactly.