Search for B+ → e+νe and B+ → μ+νμ decays using hadronic tagging

Belle Collaboration

doi:10.1103/PhysRevD.91.052016

Search for B⁺ → e⁺ν_e and B⁺ → μ⁺ν_μ decays using hadronic tagging

Belle Collaboration

School of Earth System Sciences

Yonsei University
University of Tabuk
High Energy Accelerator Research Organization, Tsukuba
King Abdulaziz University
Novosibirsk State University
Pacific Northwest National Laboratory
Alikhanov Institute for Theoretical and Experimental Physics
Indian Institute of Technology Bhubaneswar
The University of Sydney
Panjab University
Nara Women's University
Indian Institute of Technology Guwahati
Wayne State University
H. Niewodniczanski Institute of Nuclear Physics
Jožef Stefan Institute
University of Maribor
University of Hawai'i at Mānoa
Charles University
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
Hanyang University
Korea Institute of Science and Technology Information
Sungkyunkwan University
Moscow Engineering Physics Institute
German Electron Synchrotron
Tata Institute of Fundamental Research
Austrian Academy of Sciences
University of Ljubljana

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

13 Scopus citations

Abstract

We present a search for the rare leptonic decays B⁺ → e⁺ν_e and B⁺ → μ⁺ν_μ, using the full Υ(4S) data sample of 772 × 10⁶ B B¯ pairs collected with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. One of the B mesons from the Υ(4S) → B B¯ decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as B(B⁺ → e⁺ν_e) < 3.5 × 10^-6 and B(B⁺ → μ⁺ν_μ) < 2.7 × 10^-6 at 90% confidence level.

Original language	English
Article number	052016
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.91.052016
State	Published - 19 Mar 2015

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10.1103/PhysRevD.91.052016

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@article{22c25c56754942eaaa07f063b5c18ea1,

title = "Search for B+ → e+νe and B+ → μ+νμ decays using hadronic tagging",

abstract = "We present a search for the rare leptonic decays B+ → e+νe and B+ → μ+νμ, using the full Υ(4S) data sample of 772 × 106 B B¯ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. One of the B mesons from the Υ(4S) → B B¯ decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as B(B+ → e+νe) < 3.5 × 10-6 and B(B+ → μ+νμ) < 2.7 × 10-6 at 90\% confidence level.",

author = "\{Belle Collaboration\} and Y. Yook and Kwon, \{Y. J.\} and A. Abdesselam and I. Adachi and \{Al Said\}, S. and K. Arinstein and Asner, \{D. M.\} and V. Aulchenko and T. Aushev and R. Ayad and S. Bahinipati and Bakich, \{A. M.\} and A. Bala and V. Bansal and V. Bhardwaj and B. Bhuyan and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\`e}ko and Browder, \{T. E.\} and D. {\`E}ervenkov and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and R. Chistov and K. Cho and V. Chobanova and Y. Choi and Z. Dole{\v z}al and Z. Dr{\'a}sal and A. Drutskoy and D. Dutta and K. Dutta and S. Eidelman and H. Farhat and Fast, \{J. E.\} and T. Ferber and O. Frost and V. Gaur and N. Gabyshev and S. Ganguly and A. Garmash and R. Gillard and R. Glattauer and Goh, \{Y. M.\} and B. Golob and O. Grzymkowska and Kim, \{M. J.\}",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = mar,

day = "19",

doi = "10.1103/PhysRevD.91.052016",

language = "English",

volume = "91",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Search for B+ → e+νe and B+ → μ+νμ decays using hadronic tagging

AU - Belle Collaboration

AU - Yook, Y.

AU - Kwon, Y. J.

AU - Abdesselam, A.

AU - Adachi, I.

AU - Al Said, S.

AU - Arinstein, K.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Bala, A.

AU - Bansal, V.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Braèko, M.

AU - Browder, T. E.

AU - Èervenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Dutta, K.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frost, O.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Garmash, A.

AU - Gillard, R.

AU - Glattauer, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Grzymkowska, O.

AU - Kim, M. J.

PY - 2015/3/19

Y1 - 2015/3/19

N2 - We present a search for the rare leptonic decays B+ → e+νe and B+ → μ+νμ, using the full Υ(4S) data sample of 772 × 106 B B¯ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. One of the B mesons from the Υ(4S) → B B¯ decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as B(B+ → e+νe) < 3.5 × 10-6 and B(B+ → μ+νμ) < 2.7 × 10-6 at 90% confidence level.

AB - We present a search for the rare leptonic decays B+ → e+νe and B+ → μ+νμ, using the full Υ(4S) data sample of 772 × 106 B B¯ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. One of the B mesons from the Υ(4S) → B B¯ decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as B(B+ → e+νe) < 3.5 × 10-6 and B(B+ → μ+νμ) < 2.7 × 10-6 at 90% confidence level.

UR - https://www.scopus.com/pages/publications/84958758379

U2 - 10.1103/PhysRevD.91.052016

DO - 10.1103/PhysRevD.91.052016

M3 - Article

AN - SCOPUS:84958758379

SN - 1550-7998

VL - 91

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 052016

ER -

Search for B⁺ → e⁺ν_e and B⁺ → μ⁺ν_μ decays using hadronic tagging

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