Search for the decay B0 →k∗0τ+τ- at the Belle experiment

The Belle Collaboration

doi:10.1103/PhysRevD.108.L011102

Search for the decay B0 →k∗0τ+τ- at the Belle experiment

The Belle Collaboration

Department of Physics

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

20 Citations (Scopus)

Abstract

This paper presents a search for the rare flavor-changing neutral current process B0→K∗0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire υ(4S) resonance data sample of 711 fb-1, corresponding to 772×106BB¯ pairs. In our search we fully reconstruct the companion B meson produced in the process e+e-→υ(4S)→BB¯ from its hadronic decay modes, and look for the decay B0→K∗0τ+τ- in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B(B0→K∗0τ+τ-)<3.1×10-3 at 90% confidence level. This is the first direct limit on B(B0→K∗0τ+τ-).

Original language	English
Article number	L011102
Journal	Physical Review D
Volume	108
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.108.L011102
Publication status	Published - 2023 Jul 1

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.108.L011102

Cite this

@article{f02f35dab31c466cb03cab56ad800952,

title = "Search for the decay B0 →k∗0τ+τ- at the Belle experiment",

abstract = "This paper presents a search for the rare flavor-changing neutral current process B0→K∗0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire υ(4S) resonance data sample of 711 fb-1, corresponding to 772×106BB¯ pairs. In our search we fully reconstruct the companion B meson produced in the process e+e-→υ(4S)→BB¯ from its hadronic decay modes, and look for the decay B0→K∗0τ+τ- in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B(B0→K∗0τ+τ-)<3.1×10-3 at 90\% confidence level. This is the first direct limit on B(B0→K∗0τ+τ-).",

author = "\{The Belle Collaboration\} and Dong, \{T. V.\} and T. Luo and I. Adachi and H. Aihara and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and S. Bahinipati and P. Behera and K. Belous and F. Bernlochner and M. Bessner and B. Bhuyan and T. Bilka and J. Biswal and A. Bobrov and A. Bozek and M. Bra{\v c}ko and P. Branchini and Browder, \{T. E.\} and A. Budano and M. Campajola and D. {\v C}ervenkov and Chang, \{M. C.\} and P. Chang and A. Chen and Cheon, \{B. G.\} and K. Chilikin and Cho, \{H. E.\} and K. Cho and Cho, \{S. J.\} and Choi, \{S. K.\} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and T. Czank and S. Das and \{De Nardo\}, G. and \{De Pietro\}, G. and R. Dhamija and \{Di Capua\}, F. and J. Dingfelder and Z. Dole{\v Z}al and S. Dubey and D. Epifanov and E. Won",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}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.",

year = "2023",

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doi = "10.1103/PhysRevD.108.L011102",

language = "English",

volume = "108",

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T1 - Search for the decay B0 →k∗0τ+τ- at the Belle experiment

AU - The Belle Collaboration

AU - Dong, T. V.

AU - Luo, T.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Bahinipati, S.

AU - Behera, P.

AU - Belous, K.

AU - Bernlochner, F.

AU - Bessner, M.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Cho, S. J.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Czank, T.

AU - Das, S.

AU - De Nardo, G.

AU - De Pietro, G.

AU - Dhamija, R.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Dubey, S.

AU - Epifanov, D.

AU - Won, E.

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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.

PY - 2023/7/1

Y1 - 2023/7/1

N2 - This paper presents a search for the rare flavor-changing neutral current process B0→K∗0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire υ(4S) resonance data sample of 711 fb-1, corresponding to 772×106BB¯ pairs. In our search we fully reconstruct the companion B meson produced in the process e+e-→υ(4S)→BB¯ from its hadronic decay modes, and look for the decay B0→K∗0τ+τ- in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B(B0→K∗0τ+τ-)<3.1×10-3 at 90% confidence level. This is the first direct limit on B(B0→K∗0τ+τ-).

AB - This paper presents a search for the rare flavor-changing neutral current process B0→K∗0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire υ(4S) resonance data sample of 711 fb-1, corresponding to 772×106BB¯ pairs. In our search we fully reconstruct the companion B meson produced in the process e+e-→υ(4S)→BB¯ from its hadronic decay modes, and look for the decay B0→K∗0τ+τ- in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B(B0→K∗0τ+τ-)<3.1×10-3 at 90% confidence level. This is the first direct limit on B(B0→K∗0τ+τ-).

UR - https://www.scopus.com/pages/publications/85164932661

U2 - 10.1103/PhysRevD.108.L011102

DO - 10.1103/PhysRevD.108.L011102

M3 - Article

AN - SCOPUS:85164932661

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - L011102

ER -

Search for the decay B0 →k∗0τ+τ- at the Belle experiment

Abstract

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