Analytic Bethe-Salpeter description of the lightest pseudoscalar mesons

Author(s)
Wolfgang Lucha, Franz F. Schöberl
Abstract

Within the Bethe-Salpeter formalism for instantaneous interactions, we describe, along a totally analytic route, the lightest pseudoscalar mesons by quark-antiquark bound states which show at least three indispensable general features-namely, the (almost) masslessness required for pions and kaons to be interpretable as (pseudo-)Goldstone bosons, the suitable asymptotic behavior in the limit of large spacelike relative momenta as determined by the relationship between quark mass function and Bethe-Salpeter amplitudes, and a pointwise behavior for finite spacelike relative momenta suited for guaranteeing color confinement.

Organisation(s)
Particle Physics
External organisation(s)
Österreichische Akademie der Wissenschaften (ÖAW)
Journal
Physical Review D
Volume
93
No. of pages
10
ISSN
1550-7998
DOI
https://doi.org/10.1103/PhysRevD.93.056006
Publication date
03-2016
Peer reviewed
Yes
Austrian Fields of Science 2012
103034 Particle physics
Keywords
ASJC Scopus subject areas
Physics and Astronomy (miscellaneous)
Portal url
https://ucris.univie.ac.at/portal/en/publications/analytic-bethesalpeter-description-of-the-lightest-pseudoscalar-mesons(c3e66ac6-6278-48be-a9e0-8d7f861c674e).html