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Title: Form factor ratios for B s K ν and B s D s ν semileptonic decays and | V u b / V c b |

Abstract

We present a lattice quantum chromodynamics determination of the ratio of the scalar and vector form factors for two semileptonic decays of the B s meson: $$B_s$$ → $Kℓν$ and $$B_s$$ → $$D_sℓν$$. In conjunction with future experimental data, our results for these correlated form factors will provide a new method to extract $$|V_{ub}/V_{cb}|$$, which may elucidate the current tension between exclusive and inclusive determinations of these Cabibbo-Kobayashi-Maskawa mixing matrix parameters. In addition to the form factor results, we determine the ratio of the differential decay rates, and forward-backward and polarization asymmetries, for the two decays.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
HPQCD Collaboration
OSTI Identifier:
1488365
Alternate Identifier(s):
OSTI ID: 1609330
Grant/Contract Number:  
FG02-00ER41132; SC0011726
Resource Type:
Published Article
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Name: Physical Review. D. Journal Volume: 98 Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Lattice QCD; Lattice field theory; Leptonic, semileptonic & radiative decays; Nonrelativistic QCD

Citation Formats

Monahan, Christopher J., Bouchard, Chris M., Lepage, G. Peter, Na, Heechang, Shigemitsu, Junko, and HPQCD Collaboration. Form factor ratios for B s → K ℓ ν and B s → D s ℓ ν semileptonic decays and | V u b / V c b |. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.114509.
Monahan, Christopher J., Bouchard, Chris M., Lepage, G. Peter, Na, Heechang, Shigemitsu, Junko, & HPQCD Collaboration. Form factor ratios for B s → K ℓ ν and B s → D s ℓ ν semileptonic decays and | V u b / V c b |. United States. https://doi.org/10.1103/PhysRevD.98.114509
Monahan, Christopher J., Bouchard, Chris M., Lepage, G. Peter, Na, Heechang, Shigemitsu, Junko, and HPQCD Collaboration. Wed . "Form factor ratios for B s → K ℓ ν and B s → D s ℓ ν semileptonic decays and | V u b / V c b |". United States. https://doi.org/10.1103/PhysRevD.98.114509.
@article{osti_1488365,
title = {Form factor ratios for B s → K ℓ ν and B s → D s ℓ ν semileptonic decays and | V u b / V c b |},
author = {Monahan, Christopher J. and Bouchard, Chris M. and Lepage, G. Peter and Na, Heechang and Shigemitsu, Junko and HPQCD Collaboration},
abstractNote = {We present a lattice quantum chromodynamics determination of the ratio of the scalar and vector form factors for two semileptonic decays of the B s meson: $B_s$ → $Kℓν$ and $B_s$ → $D_sℓν$. In conjunction with future experimental data, our results for these correlated form factors will provide a new method to extract $|V_{ub}/V_{cb}|$, which may elucidate the current tension between exclusive and inclusive determinations of these Cabibbo-Kobayashi-Maskawa mixing matrix parameters. In addition to the form factor results, we determine the ratio of the differential decay rates, and forward-backward and polarization asymmetries, for the two decays.},
doi = {10.1103/PhysRevD.98.114509},
journal = {Physical Review. D.},
number = 11,
volume = 98,
place = {United States},
year = {Wed Dec 19 00:00:00 EST 2018},
month = {Wed Dec 19 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.98.114509

Citation Metrics:
Cited by: 13 works
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Measurements of branching fractions and <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math> distributions for <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> and <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>ρ</mml:mi><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> decays with <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>D</mml:mi><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mo>∗</mml:mo><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:msup><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math> decay tagging
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