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$B\rightarrow D^\ast\ell\nu$ at non-zero recoil

Authors :
Jack Laiho
Ruth S. Van de Water
Carleton E. DeTar
Fermilab Lattice
Alejandro Vaquero
Andreas S. Kronfeld
Milc Collaborations
Aida X El-Khadra
Source :
Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018).
Publication Year :
2019
Publisher :
Sissa Medialab, 2019.

Abstract

We present preliminary blinded results from our analysis of the form factors for $B\to D^\ast\ell\nu$ decay at non-zero recoil. Our analysis includes 15 MILC asqtad ensembles with $N_f=2+1$ flavors of sea quarks and lattice spacings ranging from $a\approx 0.15$ 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 $\left|V_{cb}\right|$ and $R(D\ast)$.

Details

Database :
OpenAIRE
Journal :
Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018)
Accession number :
edsair.doi...........5a50bd44181a16761af854ebe89741f6
Full Text :
https://doi.org/10.22323/1.334.0282