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Office of Scientific and Technical Information
 

Search for lepton-flavor-violating τ decays into a lepton and a vector meson using the full Belle data sample

Journal Article · · Journal of High Energy Physics (Online)
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Charged-lepton-flavor-violation is predicted in several new physics scenarios. We update the analysis of τ lepton decays into a light charged lepton (ℓ = e± or μ±) and a vector meson (V0 = ρ0, Φ, ω, K*0, or $$\overline{K}$$*0) using 980 fb-1 of data collected with the Belle detector at the KEKB collider. No significant excess of such signal events is observed, and thus 90% credibility level upper limits are set on the τ → ℓV0 branching fractions in the range of (1.7–4.3) × 10-8. These limits are improved by 30% on average from the previous results.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Organization:
USDOE
Contributing Organization:
Belle collaboration
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2424181
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 6 Vol. 2023; ISSN 1029-8479
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

References (28)

Flavor phenomenology of the leptoquark singlet-triplet model journal June 2020
Lepton flavour violation in hadron decays of the tau lepton within the littlest Higgs model with T-parity journal September 2022
Maximal flavour violation: a Cabibbo mechanism for leptoquarks journal November 2018
Minuit - a system for function minimization and analysis of the parameter errors and correlations journal December 1975
Monte Carlo simulation of two-photon processes journal June 1986
Monte Carlo program BHLUMI 2.01 for Bhabha scattering at low angles with Yennie-Frautschi-Suura exponentiation journal June 1992
The principal axis of jets — an attempt to analyse high-energy collisions as two-body processes journal September 1964
The precision Monte Carlo event generator for two-fermion final states in collisions journal August 2000
The EvtGen particle decay simulation package journal April 2001
The Belle detector
  • Abashian, A.; Gotow, K.; Morgan, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1 https://doi.org/10.1016/S0168-9002(01)02013-7
journal February 2002
Electron identification in Belle
  • Hanagaki, K.; Kakuno, H.; Ikeda, H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 485, Issue 3 https://doi.org/10.1016/S0168-9002(01)02113-1
journal June 2002
Muon identification in the Belle experiment at KEKB
  • Abashian, A.; Abe, K.; Abe, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 491, Issue 1-2 https://doi.org/10.1016/S0168-9002(02)01164-6
journal September 2002
Belle PID journal November 2002
Overview of the KEKB accelerators journal February 2003
BAT – The Bayesian analysis toolkit journal November 2009
Unparticle-induced lepton flavor violating decays τ→ℓ(V0,P0) journal June 2009
Physics achievements from the Belle experiment journal January 2012
Unified explanation of flavor anomalies, radiative neutrino masses, and ANITA anomalous events in a vector leptoquark model journal November 2020
Lepton flavor violation in the standard model extended by heavy singlet Dirac neutrinos journal July 2000
Tau and muon pair production cross sections in electron-positron annihilations at s = 10.58     GeV journal March 2008
Lepton flavor violatingτdecays in the type-III seesaw mechanism journal June 2010
Model-discriminating power of lepton flavor violating τ decays journal May 2014
Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark journal January 2019
Quantum Chromodynamics Test for Jets journal December 1977
The fate of $$\mathbf{V}_\mathbf{1}$$ vector leptoquarks: the impact of future flavour data journal December 2021
A search for μ-e conversion in muonic gold journal May 2006
The meaning and use of the area under a receiver operating characteristic (ROC) curve. journal April 1982
GEANT: Detector Description and Simulation Tool null January 2008

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
e+-e− experiments
tau physics