Precision $Υ$ Spectroscopy and Fundamental Parameters From NRQCD

Details Precision $Υ$ Spectroscopy and Fundamental Parameters From NRQCD Precision $Υ$ Spectroscopy and Fundamental Parameters From NRQCD

1993-12-17

arxiv.org/abs/hep-lat/9312070v1

Nucl.Phys.Proc.Suppl.34:417-424,1994

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages

Scientific paper

10.1016/0920-5632(94)90406-5

We present results from a high precision NRQCD simulation of the quenched $\Upsilon$ system at $\beta = 6$. We demonstrate a variety of important lattice techniques, including the perturbative improvement of actions, tadpole improvement, and multicorrelated fits for extracting the spectrum of excited states. We present new determinations of $\alpha_s(M_Z)$ and $M_b$, two fundamental parameters of the Standard Model.

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