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Charmonium with three flavors of dynamical quarks

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arxiv hep-lat/0210051 v1 pith:LAQVGFHF submitted 2002-10-28 hep-lat

Charmonium with three flavors of dynamical quarks

Massimo Di Pierro , Aida X. El-Khadra , Steven Gottlieb , Andreas S. Kronfeld , Paul B. Mackenzie , Damian P. Menscher , Mehmet B. Oktay , James N. Simone This is my paper
classification hep-lat
keywords quarkscalculationcharmoniumdynamicalflavorsthreeactioncharm
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

We present a calculation of the charmonium spectrum with three flavors of dynamical staggered quarks from gauge configurations that were generated by the MILC collaboration. We use the Fermilab action for the valence charm quarks. Our calculation of the spin-averaged 1P--1S and 2S--1S splittings yields a determination of the strong coupling, with $\ams(M_Z) = 0.119 (4)$.

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