Search for lepton-number- And baryon-number-violating tau decays at Belle

(Belle Collaboration)

doi:10.1103/PhysRevD.102.111101

Search for lepton-number- And baryon-number-violating tau decays at Belle

(Belle Collaboration)

Tata Institute of Fundamental Research
Utkal University
Université Paris-Saclay
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
H. Niewodniczanski Institute of Nuclear Physics
The University of Tokyo
King Abdulaziz University
University of Tabuk
Brookhaven National Laboratory
Higher School of Economics
German Electron Synchrotron
Indian Institute of Technology Bhubaneswar
Indian Institute of Technology Madras
University of Mississippi
University of Hawai'i at Mānoa
Indian Institute of Science Education and Research Mohali
Charles University
Jožef Stefan Institute
Wayne State University
University of Maribor
National Institute for Nuclear Physics
University of Naples Federico II
University of Bonn
Fu Jen Catholic University
National Taiwan University
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
Hanyang University
RAS - P.N. Lebedev Physics Institute
Korea Institute of Science and Technology Information
Gyeongsang National University
Sungkyunkwan University
Indian Institute of Technology Hyderabad
Malaviya National Institute of Technology
Fudan University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels.

Original language	English
Article number	111101
Journal	Physical Review D
Volume	102
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.102.111101
State	Published - 24 Dec 2020

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10.1103/PhysRevD.102.111101

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@article{d82401897aef40429245d14a45320623,

title = "Search for lepton-number- And baryon-number-violating tau decays at Belle",

abstract = "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's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels.",

author = "\{(Belle Collaboration)\} and D. Sahoo and Mohanty, \{G. B.\} and K. Trabelsi and I. Adachi and K. Adamczyk and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and T. Aushev and R. Ayad and T. Aziz and V. Babu and S. Bahinipati and P. Behera and J. Bennett and M. Bessner and V. Bhardwaj and T. Bilka and J. Biswal and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and M. Campajola and L. Cao and D. {\v C}ervenkov and Chang, \{M. C.\} and P. Chang and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and Cho, \{H. E.\} and K. Cho and Choi, \{S. K.\} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and S. Das and N. Dash and \{De Nardo\}, G. and \{Di Capua\}, F. and J. Dingfelder and Z. Dole{\v Z}al and Dong, \{T. V.\} and S. Dubey and S. Eidelman and Kookhyun Kang and H. Park",

note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society.",

year = "2020",

month = dec,

day = "24",

doi = "10.1103/PhysRevD.102.111101",

language = "English",

volume = "102",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

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TY - JOUR

T1 - Search for lepton-number- And baryon-number-violating tau decays at Belle

AU - (Belle Collaboration)

AU - Sahoo, D.

AU - Mohanty, G. B.

AU - Trabelsi, K.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aushev, T.

AU - Ayad, R.

AU - Aziz, T.

AU - Babu, V.

AU - Bahinipati, S.

AU - Behera, P.

AU - Bennett, J.

AU - Bessner, M.

AU - Bhardwaj, V.

AU - Bilka, T.

AU - Biswal, J.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Campajola, M.

AU - Cao, L.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Das, S.

AU - Dash, N.

AU - De Nardo, G.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Dubey, S.

AU - Eidelman, S.

AU - Kang, Kookhyun

AU - Park, H.

PY - 2020/12/24

Y1 - 2020/12/24

N2 - 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's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels.

AB - 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's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels.

UR - https://www.scopus.com/pages/publications/85099363380

U2 - 10.1103/PhysRevD.102.111101

DO - 10.1103/PhysRevD.102.111101

M3 - Article

AN - SCOPUS:85099363380

SN - 2470-0010

VL - 102

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 111101

ER -

Search for lepton-number- And baryon-number-violating tau decays at Belle

Abstract

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