Tests of Lepton Universality Using <i>B</i><SUP>0</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP><i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> and <i>B</i><SUP>+</SUP> → <i>K</i>*<SUP>+</SUP><i>l</i><SUP>+</SUP><i>l</i><SUP>-</SUP> Decays

Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellan, Abudinen, F, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA
et al (show 1001 more authors) (2022) Tests of Lepton Universality Using <i>B</i><SUP>0</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP><i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> and <i>B</i><SUP>+</SUP> → <i>K</i>*<SUP>+</SUP><i>l</i><SUP>+</SUP><i>l</i><SUP>-</SUP> Decays. PHYSICAL REVIEW LETTERS, 128 (19). 191802-.

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Tests of lepton universality in B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9  fb^{-1} . The results are consistent with the standard model and previous tests of lepton universality in related decay modes. The first observation of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays is reported.

Item Type: Article
Uncontrolled Keywords: LHCb Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 31 Aug 2022 10:18
Last Modified: 07 Oct 2023 09:21
DOI: 10.1103/PhysRevLett.128.191802
Open Access URL: https://journals.aps.org/prl/pdf/10.1103/PhysRevLe...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3162851