Tests of Light-Lepton Universality in Angular Asymmetries of 
${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}\ensuremath{\ell}\ensuremath{\nu}$ 
Decays

The Belle-II Collaboration,; Adachi, I.; et al.,

doi:10.1103/PhysRevLett.131.181801

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Tests of Light-Lepton Universality in Angular Asymmetries of ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}\ensuremath{\ell}\ensuremath{\nu}$ Decays

The Belle-II Collaboration, Adachi, I., & et al. (2023). Tests of Light-Lepton Universality in Angular Asymmetries of ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}\ensuremath{\ell}\ensuremath{\nu}$ Decays. Physical Review Letters, 131, 181801. doi:10.1103/PhysRevLett.131.181801.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000F-113A-D Version Permalink: https://hdl.handle.net/21.11116/0000-000F-113B-C

Genre: Journal Article

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Creators:
The Belle-II Collaboration¹, Author
Adachi, I.¹, Author
et al.¹, Author

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1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650

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Free keywords: Belle II

Abstract: We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic $B^0$-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral \B is fully reconstructed in $\Upsilon\left(4S\right)\to{}B \overline{B}$ decays in data corresponding to $189~\mathrm{fb}^{-1}$ integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations.

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Dates: Date issued: 2023

Publication Status: Issued

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Identifiers: Other: MPP-2023-184
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2023-184
arXiv: arxiv:2308.02023
DOI: 10.1103/PhysRevLett.131.181801
URI: https://inspirehep.net/literature/2685572

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Title: Physical Review Letters

Abbreviation : Phys.Rev.Lett.

Source Genre: Journal

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Pages: - Volume / Issue: 131 Sequence Number: - Start / End Page: 181801 Identifier: -