ORCID
- McNeile, Craig: 0000-0003-0305-2028
Abstract
Calculations of pseudoscalar decay constants of B, Bs, K and pi mesons with physical light quarks are presented. We use HISQ ensembles that include u,d,s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radiatively improved NRQCD action for the heavy quarks. The key results are f_{B^+}=0.184(4)$ GeV, f_{B_s}=0.224(4) GeV, f_{B_s}/f_{B^+}=1.217(8), f_{K^+}/f_{pi^+}=1.1916(21), f_{K^+}=155.37(34) MeV, giving a significant improvement over previous results that required chiral extrapolation. We also calculate the Wilson flow scale w_0, finding w_0=0.1715(9) fm.
Publication Date
2013-09-18
Publication Title
Default journal
Organisational Unit
School of Engineering, Computing and Mathematics
Keywords
hep-lat
Recommended Citation
Dowdall, R., Davies, C., Horgan, R., Lepage, G., McNeile, C., Monahan, C., & Shigemitsu, J. (2013) 'B, Bs, K and pi weak matrix elements with physical light quarks', Default journal, . Retrieved from https://pearl.plymouth.ac.uk/secam-research/58
