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Search for lepton-number- And baryon-number-violating tau decays at Belle
Authors
I. Adachi
K. Adamczyk
+30 more
H. Aihara
S. Al Said
D. M. Asner
T. Aushev
R. Ayad
T. Aziz
V. Babu
S. Bahinipati
P. Behera
J. Bennett
M. Bessner
V. Bhardwaj
T. Bilka
J. Biswal
G. Bonvicini
A. Bozek
M. Bračko
T. E. Browder
M. Campajola
L. Cao
M. C. Chang
P. Chang
V. Chekelian
A. Chen
B. G. Cheon
K. Chilikin
G. B. Mohanty
D. Sahoo
K. Trabelsi
D. Červenkov
Publication date
24 December 2020
Publisher
eGrove
Abstract
© 2020 authors. Published by the American Physical Society. We search for lepton-number- and baryon-number-violating decays τ-→p¯e+e-, pe-e-, p¯e+μ-, p¯e-μ+, p¯μ+μ-, and pμ-μ- using 921 fb-1 of data, equivalent to (841±12)×106 τ+τ- events, recorded with the Belle detector at the KEKB asymmetric-energy e+e- collider. In the absence of a signal, 90% confidence-level upper limits are set on the branching fractions of these decays in the range (1.8-4.0)×10-8. We set the world\u27s first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels
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Last time updated on 18/03/2021