Search for Lepton-Flavor-Violating Decay Modes 𝐵(0) →𝐾(0)(𝑆⁢)𝜏(±)⁢ℓ(∓) with Hadronic 𝐵 Tagging at Belle and Belle II

Simple item page
dc.contributor.authorAnonymous,
dc.date.issued2025
dc.description.abstractWe present the first search for the lepton-flavor-violating decay modes B(0) → K(0)(S)τ(±)⁢ℓ(∓) (⁢ℓ = μ; e) using the 711 and 365 fb⁻¹ data samples recorded by the Belle and Belle II detectors, respectively. We use a hadronic B-tagging technique to fully reconstruct a B meson and search for signal decays in the system recoiling against the tagged meson, considering τ decays to either light leptons, one charged hadron, or one charged hadron and a neutral pion.We find no evidence for B(0) → K(0)(S)τ(±)⁢ℓ(∓) decays and set 90% confidence level upper limits on the branching fractions in the range of [0.8; 3.6] × 10⁻⁵.
dc.description.statementofresponsibilityBelle and Belle II Collaborations
dc.identifier.citationPhysical Review Letters, 2025; 135(4):041801-1-041801-8
dc.identifier.doi10.1103/yzvh-v3hm
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.orcidDe La Motte, S.A. [0000-0003-3905-6805]
dc.identifier.urihttps://hdl.handle.net/2440/147982
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200101792
dc.relation.granthttp://purl.org/au-research/grants/arc/DP210101900
dc.relation.granthttp://purl.org/au-research/grants/arc/DP210102831
dc.relation.granthttp://purl.org/au-research/grants/arc/DE220100462
dc.relation.granthttp://purl.org/au-research/grants/arc/LE210100098
dc.relation.granthttp://purl.org/au-research/grants/arc/LE230100085
dc.rightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
dc.source.urihttps://doi.org/10.1103/yzvh-v3hm
dc.subjectElectroweak interaction; Flavor changing neutral currents; Leptonic, semileptonic & radiative decays; Signatures with missing energy; Signatures with tau leptons; Bottom mesons; Hypothetical gauge bosons; Leptoquarks; Lepton colliders; Monte Carlo methods
dc.titleSearch for Lepton-Flavor-Violating Decay Modes 𝐵(0) →𝐾(0)(𝑆⁢)𝜏(±)⁢ℓ(∓) with Hadronic 𝐵 Tagging at Belle and Belle II
dc.title.alternativeSearch for Lepton-Flavor-Violating Decay Modes 𝐵(0) →𝐾(0)(s)⁢tau(+/-)⁢ℓ(-/+)with Hadronic 𝐵 Tagging at Belle and Belle II
dc.typeJournal article
pubs.publication-statusPublished online

Files

Collections

Research Outputs