Hyperfine splitting of quarkonium

1 July 1985

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 32 (1) , 232-236
https://doi.org/10.1103/physrevd.32.232

Abstract

Using a QCD-motivated model we show that [M(

^{3}

S_{1}

{)]}^{2}

-[M(

^{1}

S_{0}

{)]}^{2}

is nearly constant for all quarkonium states. We find that the acceptable range of the QCD scale parameter to explain the weak quark-mass dependence of [M(

^{3}

S_{1}

{)]}^{2}

-[M(

^{1}

S_{0}

{)]}^{2}

is Λ=140±60 MeV.

Keywords

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