B Meson Decay Constants Using Relativistic Heavy Quarks

Matthew Black; Oliver Witzel

B Meson Decay Constants Using Relativistic Heavy Quarks

High Energy Physics - Lattice 2022-12-21 v1

Authors: Matthew Black , Oliver Witzel

Abstract

We present an update on ongoing work to extract pseudoscalar and vector decay constants for $B^{(*)}$ , $B^{(*)}_s$ and $B^{(*)}_c$ mesons and determine phenomenologically-interesting ratios such as $f_{B_s}/f_B$ or $f_{B^*}/f_B$ . Our calculation is based on ${\rm N_f}=2+1$ dynamical flavour gauge field ensembles generated by the RBC/UKQCD collaborations using domain-wall fermions and the Iwasaki gauge action. Using domain-wall light, strange, and charm quarks and relativistic $b$ quarks, we obtain results at multiple lattice spacings and valence quark masses.

Keywords

lattice qcd meson decay heavy meson decays charmless b decays

Cite

@article{arxiv.2212.10125,
  title  = {B Meson Decay Constants Using Relativistic Heavy Quarks},
  author = {Matthew Black and Oliver Witzel},
  journal= {arXiv preprint arXiv:2212.10125},
  year   = {2022}
}

Comments

10 pages, 5 figures, 1 table, Contribution to the 39th International Symposium on Lattice Field Theory, 8th-13th August, 2022, Bonn, Germany

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