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Precision tests of the J/psi from full lattice QCD: mass, leptonic width and radiative decay rate to eta_c

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arxiv 1301.7203 v1 pith:NCZHA2OQ submitted 2013-01-30 hep-lat hep-ph

Precision tests of the J/psi from full lattice QCD: mass, leptonic width and radiative decay rate to eta_c

C. T. H. Davies , G. C. Donald , R. J. Dowdall , J. Koponen , E. Follana , K. Hornbostel , G. P. Lepage , C. McNeile This is my paper
classification hep-lat hep-ph
keywords decayfulllatticeleptonicmassradiativerateresults
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show results from calculations in full lattice QCD of the mass, leptonic width and radiative decay rate to eta_c of the J/psi meson. These provide few % tests of QCD. Another (1.5%) test comes from comparison of time-moments of the vector charmonium correlator with results derived from the experimental values of R(e+e- to hadrons) in the charm region.

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