B-meson decay constants from improved lattice nonrelativistic QCD with physical u, d, s, and c quarks
Physical Review Letters, ISSN: 0031-9007, Vol: 110, Issue: 22, Page: 222003
2013
- 146Citations
- 201Usage
- 10Captures
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Metrics Details
- Citations146
- Citation Indexes146
- 146
- CrossRef111
- Usage201
- Downloads199
- Abstract Views2
- Captures10
- Readers10
Article Description
We present the first lattice QCD calculation of the decay constants f and fB with physical light quark masses. We use configurations generated by the MILC Collaboration including the effect of u, d, s, and c highly improved staggered quarks in the sea at three lattice spacings and with three u/d quark mass values going down to the physical value. We use improved nonrelativistic QCD (NRQCD) for the valence b quarks. Our results are f=0.186(4) GeV, fB=0.224(4) GeV, fB/f =1.205(7), and MB-M=85(2) MeV, superseding earlier results with NRQCD b quarks. We discuss the implications of our results for the standard model rates for B→μμ and B→τν. © 2013 American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84878513887&origin=inward; http://dx.doi.org/10.1103/physrevlett.110.222003; http://www.ncbi.nlm.nih.gov/pubmed/23767714; https://link.aps.org/doi/10.1103/PhysRevLett.110.222003; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.110.222003/fulltext; http://link.aps.org/accepted/10.1103/PhysRevLett.110.222003; http://link.aps.org/article/10.1103/PhysRevLett.110.222003; https://scholarworks.wm.edu/aspubs/1653; https://scholarworks.wm.edu/cgi/viewcontent.cgi?article=2662&context=aspubs
American Physical Society (APS)
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