The decay constants FDS, Fd+, FBS and Fb from lattice QCD

MILC Collaborations

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Abstract

In this report we summarize results for the leptonic decay constants fDs, fD+, fBs and fB, obtained at the three lattice spacings a ≈ 0.09, 0.125 and 0.15 fm, from the now concluded first computational phase of our on-going project. The decay constants are computed on the MILC collaboration's 2 + 1 flavor asqtad gauge ensembles. We use clover heavy quarks in the Fermilab interpretation and asqtad improved staggered light quarks. For each of the D and B meson systems, a simultaneous chiral and continuum extrapolation is performed with partially quenched lattice results. We show how improvements being implemented now, such as, higher statistics, additional finer lattice spacings and better determinations of inputs to the calculation, are expected to reduce future statistical and systematic uncertainties.

Original languageEnglish
JournalProceedings of Science
Volume105
Publication statusPublished - 2010
Event28th International Symposium on Lattice Field Theory, Lattice 2010 - Villasimius, Sardinia, Italy
Duration: 2010 Jun 142010 Jun 19

Bibliographical note

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All Science Journal Classification (ASJC) codes

  • General

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