Test of Lepton Universality in 𝑏→𝑠⁢ℓ+⁢ℓ− Decays

LHCb collaboration; R.H. O'Neil; M. Richardson-Slipper; C. Vrahas

doi:10.1103/PhysRevLett.131.051803

Test of Lepton Universality in 𝑏→𝑠⁢ℓ+⁢ℓ− Decays

LHCb collaboration, R.H. O'Neil, M. Richardson-Slipper, C. Vrahas

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The first simultaneous test of muon-electron universality using 𝐵+→𝐾+⁢ℓ+⁢ℓ− and 𝐵0→𝐾*0⁢ℓ+⁢ℓ− decays is performed, in two ranges of the dilepton invariant-mass squared, 𝑞2. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. Each of the four lepton universality measurements reported is either the first in the given 𝑞2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.

Original language	English
Article number	051803
Pages (from-to)	1-13
Number of pages	13
Journal	Physical Review Letters
Volume	131
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.131.051803
Publication status	Published - 2 Aug 2023

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http://arxiv.org/abs/2212.09152

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Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
Barter, W. (Principal Investigator)
1/07/22 → 30/06/26
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Experimental Particle Physics at the University of Edinburgh
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Cite this

@article{f71b6442e43647dfb07dde8e5da90f2d,

title = "Test of Lepton Universality in 𝑏→𝑠⁢ℓ+⁢ℓ− Decays",

abstract = "The first simultaneous test of muon-electron universality using 𝐵+→𝐾+⁢ℓ+⁢ℓ− and 𝐵0→𝐾*0⁢ℓ+⁢ℓ− decays is performed, in two ranges of the dilepton invariant-mass squared, 𝑞2. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. Each of the four lepton universality measurements reported is either the first in the given 𝑞2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.",

author = "\{LHCb collaboration\} and William Barter and P.E.L. Clarke and S. Gambetta and F. Muheim and M. Needham and Mark Williams and Federico Betti and Robert Currie and S. Eisenhardt and Lavra, \{Lais Soares\} and Oliva Federica and Ozlem Ozcelik and Gediminas Sarpis and R.H. O'Neil and M. Richardson-Slipper and C. Vrahas",

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doi = "10.1103/PhysRevLett.131.051803",

language = "English",

volume = "131",

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journal = "Physical Review Letters",

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T1 - Test of Lepton Universality in 𝑏→𝑠⁢ℓ+⁢ℓ− Decays

AU - LHCb collaboration

AU - Barter, William

AU - Clarke, P.E.L.

AU - Gambetta, S.

AU - Muheim, F.

AU - Needham, M.

AU - Williams, Mark

AU - Betti, Federico

AU - Currie, Robert

AU - Eisenhardt, S.

AU - Lavra, Lais Soares

AU - Federica, Oliva

AU - Ozcelik, Ozlem

AU - Sarpis, Gediminas

AU - O'Neil, R.H.

AU - Richardson-Slipper, M.

AU - Vrahas, C.

PY - 2023/8/2

Y1 - 2023/8/2

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AB - The first simultaneous test of muon-electron universality using 𝐵+→𝐾+⁢ℓ+⁢ℓ− and 𝐵0→𝐾*0⁢ℓ+⁢ℓ− decays is performed, in two ranges of the dilepton invariant-mass squared, 𝑞2. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. Each of the four lepton universality measurements reported is either the first in the given 𝑞2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.

U2 - 10.1103/PhysRevLett.131.051803

DO - 10.1103/PhysRevLett.131.051803

M3 - Article

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 051803

ER -

Test of Lepton Universality in 𝑏→𝑠⁢ℓ+⁢ℓ− Decays

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Projects

Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons

Experimental Particle Physics at the University of Edinburgh

Next generation photodetectors for future applications

Cite this