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arXiv · 1301.7203

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
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Abstract

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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C. T. H. Davies, G. C. Donald, R. J. Dowdall, J. Koponen, E. Follana, K. Hornbostel, G. P. Lepage, C. McNeile. 2013-01-30. Precision tests of the J/psi from full lattice QCD: mass, leptonic width and radiative decay rate to eta_c. https://arxiv.org/abs/1301.7203

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