Mass spectra of heavy pseudoscalars using instantaneous Bethe–Salpeter equation with different kernels

Autor:	Wei Li, Ying-Long Wang, Tai-Fu Feng, Guo-Li Wang
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	European Physical Journal C: Particles and Fields, Vol 80, Iss 8, Pp 1-6 (2020)
Druh dokumentu:	article
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-020-8319-6
Popis:	Abstract We solved the instantaneous Bethe–Salpeter equation for heavy pseudoscalars in different kernels, where the kernels are obtained using linear scalar potential plus one gluon exchange vector potentials in Feynman gauge, Landau gauge, Coulomb gauge and time-component Coulomb gauge. Since we cannot give a complete QCD-based calculation, the results are gauge dependent. We compared the obtained mass spectra of heavy pseudoscalars between different kernels, found that using the same parameters we obtain the smallest mass splitting in time-component Coulomb gauge, the similar largest mass splitting in Feynman and Coulomb gauges, middle size splitting in Landau gauge.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/e113949ffe9c4d2c960ae9181ac448f2 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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