Search for B0 →τ±∓ (ℓ=e, μ) with a hadronic tagging method at Belle SEARCH for B0 →τ±∓ (ℓ=e, μ) with A ... H. ATMACAN et al.

Authors

H. Atmacan, University of Cincinnati
A. J. Schwartz, University of Cincinnati
K. Kinoshita, University of Cincinnati
I. Adachi, The Graduate University for Advanced Studies
K. Adamczyk, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
H. Aihara, The University of Tokyo
S. Al Said, King Abdulaziz University
D. M. Asner, Brookhaven National Laboratory
V. Aulchenko, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
T. Aushev, HSE University
R. Ayad, University of Tabuk
V. Babu, Deutsches Elektronen-Synchrotron (DESY)
S. Bahinipati, Indian Institute of Technology Bhubaneswar
M. Bauer, Karlsruher Institut für Technologie
P. Behera, Indian Institute of Technology Madras
K. Belous, Institut fiziki vysokikh energii
J. Bennett, University of Mississippi
F. Bernlochner, Universität Bonn
M. Bessner, University of Hawaiʻi at Mānoa

Document Type

Article

Publication Date

11-1-2021

Abstract

We present a search for the lepton-flavor-violating decays B0→τ±∓, where ℓ=(e,μ), using the full data sample of 772×106 BB¯ pairs recorded by the Belle detector at the KEKB asymmetric-energy e+e- collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. The τ± lepton is reconstructed indirectly using the momentum of the reconstructed B and that of the ∓ from the signal decay. We find no evidence for B0→τ±∓ decays and set upper limits on their branching fractions at 90% confidence level of B(B0→τ±μ∓)<1.5×10-5 and B(B0→τ±e∓)<1.6×10-5.

Relational Format

journal article

Recommended Citation

Atmacan, H., Schwartz, A. J., Kinoshita, K., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bauer, M., Behera, P., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., … The Belle Collaboration. (2021). Search for B 0 → τ ± ℓ ∓ (ℓ = e , μ) with a hadronic tagging method at Belle. Physical Review D, 104(9), L091105. https://doi.org/10.1103/PhysRevD.104.L091105

DOI

10.1103/PhysRevD.104.L091105

Accessibility Status

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