Study on ηc2(ηb2) electromagnetic decay into double photons
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.034018
Abstract: Within the framework of nonrelativistic QCD factorization formalism, we compute the helicity amplitude as well as the decay width of ${\ensuremath{\eta}}_{Q2}$ ($Q=c$, $b$) electromagnetic decay into two photons up to next-to-next-to-leading order in ${\ensuremath{\alpha}}_{s}$ expansion.… read more here.
Keywords: ensuremath; eta ensuremath; electromagnetic decay; ensuremath eta ... See more keywords