Form factors for semileptonic 𝑩 → 𝝅, 𝑩𝒔 → 𝑲 and 𝑩𝒔 → 𝑫𝒔 decays

Jonathan Flynn; Ryan Hill; Andreas Jüttner; Amarjit Soni; J. Tobias Tsang; Oliver Witzel

doi:10.22323/1.396.0306

Form factors for semileptonic 𝑩 → 𝝅, 𝑩𝒔 → 𝑲 and 𝑩𝒔 → 𝑫𝒔 decays

Jonathan Flynn^*, Ryan Hill^*, Andreas Jüttner, Amarjit Soni, J. Tobias Tsang, Oliver Witzel

^*Kontaktforfatter

Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › peer review

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Abstract

We report on our determinations of 𝐵 → 𝜋ℓ𝜈, 𝐵𝑠 → 𝐾ℓ𝜈 and 𝐵𝑠 → 𝐷𝑠ℓ𝜈 semileptonic form factors. In addition we discuss the determination of 𝑅-ratios testing lepton-flavor universality and suggest an improved ratio. Our calculations are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC/UKQCD collaboration with three lattice spacings of 1/𝑎 = 1.78, 2.38, and 2.79 GeV. We use the relativistic heavy quark action for 𝑏 quarks and charm quarks are simulated with the Möbius domain-wall fermion action.

Originalsprog	Engelsk
Tidsskrift	P o S - Proceedings of Science
ISSN	1824-8039
DOI	https://doi.org/10.22323/1.396.0306
Status	Udgivet - 8. jul. 2022
Begivenhed	38th International Symposium on Lattice Field Theory, LATTICE 2021 - Virtual, Online, USA Varighed: 26. jul. 2021 → 30. jul. 2021

Konference

Konference	38th International Symposium on Lattice Field Theory, LATTICE 2021
Land/Område	USA
By	Virtual, Online
Periode	26/07/2021 → 30/07/2021

Emneord

hep-lat

Dokumenter og links

10.22323/1.396.0306Licens: CC BY-NC-ND

Open Access VersionIndsendt manuskript, 741 KBLicens: CC BY-NC-ND
Open access versionForlagets udgivne version, 755 KBLicens: CC BY-NC-ND

Citationsformater

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title = "Form factors for semileptonic 푩 → 흅, 푩풔 → 푲 and 푩풔 → 푫풔 decays",

abstract = "We report on our determinations of 퐵 → 휋ℓ휈, 퐵푠 → 퐾ℓ휈 and 퐵푠 → 퐷푠ℓ휈 semileptonic form factors. In addition we discuss the determination of 푅-ratios testing lepton-flavor universality and suggest an improved ratio. Our calculations are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC/UKQCD collaboration with three lattice spacings of 1/푎 = 1.78, 2.38, and 2.79 GeV. We use the relativistic heavy quark action for 푏 quarks and charm quarks are simulated with the M{\"o}bius domain-wall fermion action. ",

keywords = "hep-lat",

author = "Jonathan Flynn and Ryan Hill and Andreas J{\"u}ttner and Amarjit Soni and Tsang, {J. Tobias} and Oliver Witzel",

year = "2022",

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day = "8",

doi = "10.22323/1.396.0306",

language = "English",

journal = "P o S - Proceedings of Science",

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T1 - Form factors for semileptonic 푩 → 흅, 푩풔 → 푲 and 푩풔 → 푫풔 decays

AU - Flynn, Jonathan

AU - Hill, Ryan

AU - Jüttner, Andreas

AU - Soni, Amarjit

AU - Tsang, J. Tobias

AU - Witzel, Oliver

PY - 2022/7/8

Y1 - 2022/7/8

N2 - We report on our determinations of 퐵 → 휋ℓ휈, 퐵푠 → 퐾ℓ휈 and 퐵푠 → 퐷푠ℓ휈 semileptonic form factors. In addition we discuss the determination of 푅-ratios testing lepton-flavor universality and suggest an improved ratio. Our calculations are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC/UKQCD collaboration with three lattice spacings of 1/푎 = 1.78, 2.38, and 2.79 GeV. We use the relativistic heavy quark action for 푏 quarks and charm quarks are simulated with the Möbius domain-wall fermion action.

AB - We report on our determinations of 퐵 → 휋ℓ휈, 퐵푠 → 퐾ℓ휈 and 퐵푠 → 퐷푠ℓ휈 semileptonic form factors. In addition we discuss the determination of 푅-ratios testing lepton-flavor universality and suggest an improved ratio. Our calculations are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC/UKQCD collaboration with three lattice spacings of 1/푎 = 1.78, 2.38, and 2.79 GeV. We use the relativistic heavy quark action for 푏 quarks and charm quarks are simulated with the Möbius domain-wall fermion action.

KW - hep-lat

U2 - 10.22323/1.396.0306

DO - 10.22323/1.396.0306

M3 - Conference article

SN - 1824-8039

JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

T2 - 38th International Symposium on Lattice Field Theory, LATTICE 2021

Y2 - 26 July 2021 through 30 July 2021

ER -

Form factors for semileptonic 𝑩 → 𝝅, 𝑩𝒔 → 𝑲 and 𝑩𝒔 → 𝑫𝒔 decays

Abstract

Konference

Emneord

Dokumenter og links

Fingeraftryk

Citationsformater