Search for the lepton-flavour violating decays B0 → K*0τ±μ∓

LHCb Collaboration; Simone Bifani; Niladribihari Sahoo; Nigel Watson

doi:10.1007/JHEP06(2023)143

Search for the lepton-flavour violating decays B⁰ → K^*0τ^±μ^∓

LHCb Collaboration, Simone Bifani, Niladribihari Sahoo, Nigel Watson

Physics and Astronomy

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Abstract

A first search for the lepton-flavour violating decays B⁰ →K^*0τ^±μ^∓is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb⁻¹. No significant signal is observed, and upper limits on the branching fractions are determined to be B (B⁰→K^∗0τ⁺μ⁻) < 1.0(1.2) × 10⁻⁵ and B (B⁰→K^∗0τ⁻μ⁺) < 8.2(9.8) × 10⁻⁶ at the 90% (95%) confidence level.

Original language	English
Article number	143
Number of pages	24
Journal	JHEP
Volume	2023
Issue number	6
DOIs	https://doi.org/10.1007/JHEP06(2023)143
Publication status	Published - 23 Jun 2023

Bibliographical note

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-021.html (LHCb public pages)

Keywords

B Physics
Beyond Standard Model
Hadron-Hadron Scattering
Rare Decay

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Cite this

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title = "Search for the lepton-flavour violating decays B0 → K*0τ±μ∓",

abstract = "A first search for the lepton-flavour violating decays B0 →K*0τ±μ∓is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. No significant signal is observed, and upper limits on the branching fractions are determined to be B (B0→K∗0τ+μ−) < 1.0(1.2) × 10−5 and B (B0→K∗0τ−μ+) < 8.2(9.8) × 10−6 at the 90% (95%) confidence level. ",

keywords = "B Physics, Beyond Standard Model, Hadron-Hadron Scattering, Rare Decay",

author = "{LHCb Collaboration} and Simone Bifani and Niladribihari Sahoo and Nigel Watson",

note = "All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-021.html (LHCb public pages)",

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T1 - Search for the lepton-flavour violating decays B0 → K*0τ±μ∓

AU - LHCb Collaboration

AU - Bifani, Simone

AU - Sahoo, Niladribihari

AU - Watson, Nigel

N1 - All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-021.html (LHCb public pages)

PY - 2023/6/23

Y1 - 2023/6/23

N2 - A first search for the lepton-flavour violating decays B0 →K*0τ±μ∓is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. No significant signal is observed, and upper limits on the branching fractions are determined to be B (B0→K∗0τ+μ−) < 1.0(1.2) × 10−5 and B (B0→K∗0τ−μ+) < 8.2(9.8) × 10−6 at the 90% (95%) confidence level.

AB - A first search for the lepton-flavour violating decays B0 →K*0τ±μ∓is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. No significant signal is observed, and upper limits on the branching fractions are determined to be B (B0→K∗0τ+μ−) < 1.0(1.2) × 10−5 and B (B0→K∗0τ−μ+) < 8.2(9.8) × 10−6 at the 90% (95%) confidence level.

KW - B Physics

KW - Beyond Standard Model

KW - Hadron-Hadron Scattering

KW - Rare Decay

U2 - 10.1007/JHEP06(2023)143

DO - 10.1007/JHEP06(2023)143

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