Analytic Bethe-Salpeter description of the lightest pseudoscalar mesons

Autor(en)

Wolfgang Lucha, Franz F. Schöberl

Abstrakt

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(en)

Teilchenphysik

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review D

Band

93

Anzahl der Seiten

10

ISSN

1550-7998

DOI

https://doi.org/10.1103/PhysRevD.93.056006

Publikationsdatum

03-2016

Peer-reviewed

Ja

ÖFOS 2012

103034 Teilchenphysik

Schlagwörter

ASJC Scopus Sachgebiete

Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/analytic-bethesalpeter-description-of-the-lightest-pseudoscalar-mesons(c3e66ac6-6278-48be-a9e0-8d7f861c674e).html