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

Belle Collaboration

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish
Article number052016
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number5
DOIs
Publication statusPublished - 2015 Mar 19

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marking
decay
recoilings
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detectors
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

@article{9cce14ba26ff43568314fdbd34fc5c0e,
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 Youngjoon Kwon 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. Doležal 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 J. Haba",
year = "2015",
month = "3",
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doi = "10.1103/PhysRevD.91.052016",
language = "English",
volume = "91",
journal = "Physical review D: Particles and fields",
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Search for B+ → e+νe and B+ → μ+νμ decays using hadronic tagging. / Belle Collaboration.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 91, No. 5, 052016, 19.03.2015.

Research output: Contribution to journalArticle

TY - JOUR

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

AU - Belle Collaboration

AU - Yook, Y.

AU - Kwon, Youngjoon

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 - Haba, 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.

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U2 - 10.1103/PhysRevD.91.052016

DO - 10.1103/PhysRevD.91.052016

M3 - Article

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VL - 91

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 5

M1 - 052016

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