B, Bs, K and pi weak matrix elements with physical light quarks
dc.contributor.author | Dowdall, RJ | |
dc.contributor.author | Davies, CTH | |
dc.contributor.author | Horgan, RR | |
dc.contributor.author | Lepage, GP | |
dc.contributor.author | McNeile, C | |
dc.contributor.author | Monahan, CJ | |
dc.contributor.author | Shigemitsu, J | |
dc.date.accessioned | 2018-03-07T09:10:41Z | |
dc.date.available | 2018-03-07T09:10:41Z | |
dc.date.issued | 2013-09-18 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/10999 | |
dc.description | 7 pages, 8 figures, presented at the 31st International Symposium on Lattice Field Theory | |
dc.description.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. | |
dc.language.iso | en | |
dc.subject | hep-lat | |
dc.subject | hep-lat | |
dc.title | B, Bs, K and pi weak matrix elements with physical light quarks | |
dc.type | journal-article | |
plymouth.author-url | http://arxiv.org/abs/1309.4610v1 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/EXTENDED UoA 10 - Mathematical Sciences | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA10 Mathematical Sciences | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
plymouth.organisational-group | /Plymouth/Users by role/Researchers in ResearchFish submission | |
dc.rights.embargoperiod | Not known | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.type | Journal Article/Review |