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Title: $$B_s \to K \ell\nu$$ Form Factors with 2+1 Flavors

Abstract

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors $$f_0$$ and $$f_+$$ for the semileptonic $$B_s \rightarrow K \ell\nu$$ decay. A total of six ensembles with lattice spacing from $$\approx0.12$$ to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass $$m'_l$$ is one-tenth the strange quark mass $$m'_s$$. At the intermediate lattice spacing, the ratio $$m'_l/m'_s$$ ranges from 0.05 to 0.2. The valence $b$ quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element $$|V_{ub}|$$.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
Fermilab Lattice; MILC
OSTI Identifier:
1413676
Report Number(s):
arXiv:1711.08085; FERMILAB-CONF-17-487-T
1637590
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 35th International Symposium on Lattice Field Theory, Granada, Spain, 06/18-06/24/2017
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Liu, Yuzhi, and et al. $B_s \to K \ell\nu$ Form Factors with 2+1 Flavors. United States: N. p., 2017. Web.
Liu, Yuzhi, & et al. $B_s \to K \ell\nu$ Form Factors with 2+1 Flavors. United States.
Liu, Yuzhi, and et al. Tue . "$B_s \to K \ell\nu$ Form Factors with 2+1 Flavors". United States. doi:. https://www.osti.gov/servlets/purl/1413676.
@article{osti_1413676,
title = {$B_s \to K \ell\nu$ Form Factors with 2+1 Flavors},
author = {Liu, Yuzhi and et al.},
abstractNote = {Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors $f_0$ and $f_+$ for the semileptonic $B_s \rightarrow K \ell\nu$ decay. A total of six ensembles with lattice spacing from $\approx0.12$ to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass $m'_l$ is one-tenth the strange quark mass $m'_s$. At the intermediate lattice spacing, the ratio $m'_l/m'_s$ ranges from 0.05 to 0.2. The valence $b$ quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element $|V_{ub}|$.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 21 00:00:00 EST 2017},
month = {Tue Nov 21 00:00:00 EST 2017}
}

Conference:
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