Charmonium properties from lattice QCD+QED : Hyperfine splitting, J/ψ leptonic width, charm quark mass, and aμc
@article{Hatton2020CharmoniumPF, title={Charmonium properties from lattice QCD+QED : Hyperfine splitting, J/$\psi$ leptonic width, charm quark mass, and a$\mu$c}, author={D. Hatton and Christine T. H. Davies and B. Galloway and Jonna Koponen and G. Peter Lepage and Andrew Lytle}, journal={Physical Review D}, year={2020} }
We have performed the first
n
f
=
2
+
1
+
1
lattice QCD computations of the properties (masses and decay constants) of ground-state charmonium mesons. Our calculation uses the HISQ action to generate quark-line connected two-point correlation functions on MILC gluon field configurations that include
u
/
d
quark masses going down to the physical point, tuning the
c
quark mass from
M
J
/
ψ
and including the effect of the
c
quark’s electric charge through quenched QED…
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