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Title: Leptonic B- and D-Meson Decay Constants with 2+1 Flavors of Asqtad Fermions

We present the status of our updated D- and B-meson decay-constant analysis, based on the MILC Nf =2+1 asqtad gauge ensembles. Heavy quarks are incorporated using the Wilson clover action with the Fermilab interpretation. This analysis includes ensembles at five lattice spacings from α ≈ 0.045 to 0.15 fm, and light sea-quark masses down to 1/20th of the strange-quark mass. Projected error budgets for ratios of decay constants, in particular between bottom- and charm-meson decay constants, are presented.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1223205
Report Number(s):
FERMILAB-CONF--14-521-T
arXiv eprint number arXiv:1501.01991; TRN: US1601470
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 32. International Symposium on Lattice Field Theory, Brookhaven, NY (United States), 23-28 Jun 2014
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; D MESONS; B QUARKS; C QUARKS; S QUARKS; T QUARKS; B MESONS; FLAVOR MODEL; LEPTONIC DECAY; LATTICE GAUGE THEORY; DATA COVARIANCES; DECAY AMPLITUDES