Width difference in the B-s(0)-(B)over-bar-(0)(s) system from lattice HQET
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Width difference in the B-s(0)-(B)over-bar-(0)(s) system from lattice HQET

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Width difference in the B-s(0)-(B)over-bar-(0)(s) system from lattice HQET

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Giménez Gómez, Vicente; Reyes Gámez, Juan
This document is a artículoDate2001

Este documento está disponible también en : http://hdl.handle.net/10550/38996
We present recent results for the prediction of the B-s(0)-(B) over bar (0)(s) lifetime difference from lattice Heavy Quark Effective Theory simulations. In order to get a next-to-leading order result we have calculated the matching between QCD and HQET and the two loop anomalous dimension in the HQET for all the DeltaB = 2 operators, in particular for the operators which enter in the width difference. me obtain far the B-s(0)-(B) over bar (0)(s) lifetime difference, Delta GammaB(s)/GammaB(s) = (5.1 +/- 1.9 +/- 1.7) x 10(-2).

    Giménez Gómez, Vicente 2001 Width difference in the B-s(0)-(B)over-bar-(0)(s) system from lattice HQET Nuclear Physics B-Proceedings Supplements 93 1-3 95 98
http://dx.doi.org/10.1016/S0920-5632(00)01068-9

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