Volume 281 - The 26th International Nuclear Physics Conference (INPC2016) - QCD: Hadron Structure and Spectroscopy – Tuesday 13
The role of SU(3)-flavour symmetry breaking in B-meson decay constants from Lattice QCD
S. Hollitt,* P.D. Jackson, R. Young, J. Zanotti
*corresponding author
Full text: pdf
Pre-published on: 2017 May 04
Published on: 2017 May 09
Abstract
B-physics is currently facing a number of puzzles, and additional precision data - and precision calculations - will be required to pick these apart. In particular, as the Belle II detector approaches completion, there is increasing need for lattice calculations related to CKM matrix elements and to important B branching ratios such as $\mathcal{B} (B \rightarrow \tau \nu)$.

We present early results for $f_B$ and $f_{B_s}$ from the CSSM/QCDSF/UKQCD collaboration on a set of lattices with a fixed volume $32^3\times64$ and lattice spacing $a=0.074$~fm. By varying the $u$,$d$,$s$ quark masses while holding their average value constant, we are able to reliably control the SU(3)-flavour breaking effects.
DOI: https://doi.org/10.22323/1.281.0272
Open Access