A study of the static-light BB parameter

Joseph Christensen; Terrence Draper; Craig McNeile

doi:10.1016/S0920-5632(96)00664-0

A study of the static-light B_B parameter

Joseph Christensen, Terrence Draper, Craig McNeile

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the B_B parameter, relevant for B⁰-B⁰ mixing, from a lattice gauge theory simulation using the static approximation for the heavy quark and the Wilson action for the light quark and gauge fields. Improved sources, produced by an optimized variational technique, MOST, reduce statistical errors and minimize excited-state contamination of the ground-state signal. Renormalization of four-fermion operator coefficients, using the Lepage-Mackenzie procedure for estimating typical momentum scales, is linearized to reduce order α²_s uncertainties.

Original language	English
Pages (from-to)	378-381
Number of pages	4
Journal	Nuclear Physics B - Proceedings Supplements
Volume	53
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5632(96)00664-0
State	Published - Feb 1997

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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abstract = "We calculate the BB parameter, relevant for B0-B0 mixing, from a lattice gauge theory simulation using the static approximation for the heavy quark and the Wilson action for the light quark and gauge fields. Improved sources, produced by an optimized variational technique, MOST, reduce statistical errors and minimize excited-state contamination of the ground-state signal. Renormalization of four-fermion operator coefficients, using the Lepage-Mackenzie procedure for estimating typical momentum scales, is linearized to reduce order α2s uncertainties.",

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AB - We calculate the BB parameter, relevant for B0-B0 mixing, from a lattice gauge theory simulation using the static approximation for the heavy quark and the Wilson action for the light quark and gauge fields. Improved sources, produced by an optimized variational technique, MOST, reduce statistical errors and minimize excited-state contamination of the ground-state signal. Renormalization of four-fermion operator coefficients, using the Lepage-Mackenzie procedure for estimating typical momentum scales, is linearized to reduce order α2s uncertainties.

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A study of the static-light B_B parameter

Abstract

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