Tau Decays into Three Charged Leptons and Two Neutrinos

CLEO Collaboration

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We search for the radiative leptonic tau decays τ→ee+eντνe and τ→μe+eντνμ using 3.60fb−1 of data collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the τ→ee+eντνe process. For this channel we measure the branching fraction B(τ→ee+eντνe) = (2.7+1.5+0.4+0.1−1.1−0.4−0.3)×10−5. An upper limit is established for the second channel: B(τ→μe+eντνμ) < 3.2 × 10−5 at 90% C.L. Both results are consistent with the rates expected from standard model predictions.

Original languageEnglish
Pages (from-to)2637-2641
Number of pages5
JournalPhysical Review Letters
Volume76
Issue number15
DOIs
Publication statusPublished - 1996 Jan 1

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leptons
neutrinos
decay
predictions
electrons

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

CLEO Collaboration. / Tau Decays into Three Charged Leptons and Two Neutrinos. In: Physical Review Letters. 1996 ; Vol. 76, No. 15. pp. 2637-2641.
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abstract = "We search for the radiative leptonic tau decays τ→ee+e−ντνe and τ→μe+e−ντνμ using 3.60fb−1 of data collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the τ→ee+e−ντνe process. For this channel we measure the branching fraction B(τ→ee+e−ντνe) = (2.7+1.5+0.4+0.1−1.1−0.4−0.3)×10−5. An upper limit is established for the second channel: B(τ→μe+e−ντνμ) < 3.2 × 10−5 at 90{\%} C.L. Both results are consistent with the rates expected from standard model predictions.",
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Tau Decays into Three Charged Leptons and Two Neutrinos. / CLEO Collaboration.

In: Physical Review Letters, Vol. 76, No. 15, 01.01.1996, p. 2637-2641.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tau Decays into Three Charged Leptons and Two Neutrinos

AU - CLEO Collaboration

AU - Alam, M. S.

AU - Kim, I. J.

AU - Ling, Z.

AU - Mahmood, A. H.

AU - O’neill, J. J.

AU - Severini, H.

AU - Sun, C. R.

AU - Timm, S.

AU - Wappler, F.

AU - Duboscq, J. E.

AU - Fulton, R.

AU - Fujino, D.

AU - Gan, K. K.

AU - Honscheid, K.

AU - Kagan, H.

AU - Kass, R.

AU - Lee, J.

AU - Sung, M.

AU - White, C.

AU - Wanke, R.

AU - Wolf, A.

AU - Zoeller, M. M.

AU - Fu, X.

AU - Nemati, B.

AU - Richichi, S. J.

AU - Ross, W. R.

AU - Skubic, P.

AU - Wood, M.

AU - Bishai, M.

AU - Fast, J.

AU - Gerndt, E.

AU - Hinson, J. W.

AU - Miao, T.

AU - Miller, D. H.

AU - Modesitt, M.

AU - Shibata, E. I.

AU - Shipsey, I. P.J.

AU - Wang, P. N.

AU - Gibbons, L.

AU - Johnson, S. D.

AU - Kwon, Youngjoon

AU - Roberts, S.

AU - Thorndike, E. H.

AU - Jessop, C. P.

AU - Lingel, K.

AU - Marsiske, H.

AU - Perl, M. L.

AU - Schaffner, S. F.

AU - Wang, R.

AU - Coan, T. E.

PY - 1996/1/1

Y1 - 1996/1/1

N2 - We search for the radiative leptonic tau decays τ→ee+e−ντνe and τ→μe+e−ντνμ using 3.60fb−1 of data collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the τ→ee+e−ντνe process. For this channel we measure the branching fraction B(τ→ee+e−ντνe) = (2.7+1.5+0.4+0.1−1.1−0.4−0.3)×10−5. An upper limit is established for the second channel: B(τ→μe+e−ντνμ) < 3.2 × 10−5 at 90% C.L. Both results are consistent with the rates expected from standard model predictions.

AB - We search for the radiative leptonic tau decays τ→ee+e−ντνe and τ→μe+e−ντνμ using 3.60fb−1 of data collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the τ→ee+e−ντνe process. For this channel we measure the branching fraction B(τ→ee+e−ντνe) = (2.7+1.5+0.4+0.1−1.1−0.4−0.3)×10−5. An upper limit is established for the second channel: B(τ→μe+e−ντνμ) < 3.2 × 10−5 at 90% C.L. Both results are consistent with the rates expected from standard model predictions.

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U2 - 10.1103/PhysRevLett.76.2637

DO - 10.1103/PhysRevLett.76.2637

M3 - Article

VL - 76

SP - 2637

EP - 2641

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

ER -