The $$B\to D^\ast\ell\nu$$ Semileptonic Decay at Nonzero Recoil and Its Implications for $$\ |V_{cb}\ |$$ and $$R(D^\ast)$$
Conference
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OSTI ID:1581413
We present nearly final results from our analysis of the form factors for $$B\to D^\ast\ell\nu$$ decay at nonzero recoil. Our analysis includes 15 MILC asqtad ensembles with $$N_f=2+1$$ flavors of sea quarks and lattice spacings ranging from $$a\approx0.15$$ fm down to $0.045$ fm. The valence light quarks employ the asqtad action, whereas the $$b$$ and $$c$$ quarks are treated using the Fermilab action. We discuss the impact that our results will have on $$\ |V_{cb}\ |$$ and $$R(D^\ast)$$.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- Fermilab Lattice; MILC
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1581413
- Report Number(s):
- arXiv:1912.05886; FERMILAB-CONF-19-633-T; oai:inspirehep.net:1770412
- Resource Relation:
- Conference: 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 06/16-06/22/2019
- Country of Publication:
- United States
- Language:
- English
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