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The Upsilon spectrum and the determination of the lattice spacing from lattice QCD including charm quarks in the sea
PHYSICAL REVIEW D, no. 5 (2012)
Abstract
We give results for the Upsilon spectrum from lattice QCD using an improved version of the nonrelativistic QCD action for b quarks which includes radiative corrections to kinetic terms at O(nu(4)) in the velocity expansion. We also include for the first time the effect of up, down, strange and charm quarks in the sea using "second generat...More
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