Observation of the Decay $\tau \to \pi$ Neutrino

The decay of the heavy lepton τ into πv has been established using the magnetic detector PLUTO. The branching ratio is determined to be BR( τ → πv )=(9.0 ± 2.9)% with an additional systematic uncertainty of 2.5%. This value is in good agreement with the theoretical prediction.

ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
TAU: PAIR PRODUCTION
PAIR PRODUCTION: TAU
TAU: SEMILEPTONIC DECAY
TAU: BRANCHING RATIO
CHARGED PARTICLE: ANGULAR DISTRIBUTION
ANGULAR DISTRIBUTION: CHARGED PARTICLE
PI: MOMENTUM SPECTRUM
MUON: MOMENTUM SPECTRUM

References(13)

Figures(0)

Evidence for Anomalous Lepton Production in e+ - e- Annihilation

Martin L. Perl
(
- LBL, Berkeley and
- UC, Berkeley and
- SLAC
)
,
G.S. Abrams
(
- LBL, Berkeley and
- UC, Berkeley and
- SLAC
)
,
A. Boyarski
(
- LBL, Berkeley and
- UC, Berkeley and
- SLAC
)
,
Martin Breidenbach
(
- LBL, Berkeley and
- UC, Berkeley and
- SLAC
)
,
D. Briggs
(
- LBL, Berkeley and
- UC, Berkeley and
- SLAC
)

et al.

- Phys.Rev.Lett. 35 (1975) 1489-1492,
- In *Lichtenberg, D. B. ( Ed.), Rosen, S. P. ( Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 210-213,
- ,
- In *Rosner, J.L. (ed.): New Particles*, 89-92
•
DOI:
- 10.1103/PhysRevLett.35.1489

Inclusive Anomalous Muon Production in e+ e- Annihilation

G.J. Feldman
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
F. Bulos
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
D. Luke
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.S. Abrams
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
M.S. Alam
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)

et al.

- Phys.Rev.Lett. 38 (1977) 117,
- Phys.Rev.Lett. 38 (1977) 576 (erratum)
•
DOI:
- 10.1103/PhysRevLett.38.117

Properties of Anomalous e mu Events Produced in e+ e- Annihilation

Martin L. Perl
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.J. Feldman
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.S. Abrams
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
M.S. Alam
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
A. Boyarski
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)

et al.

- Phys.Lett.B 63 (1976) 466,
- In *Rosner, J. L. ( Ed.): New Particles*, 93-97. ( Phys. Lett. B63 ( 1976) 466-470 and SLAC Stanford - SLAC-PUB-1781 (76,REC.SEP.) 16p
•
DOI:
- 10.1016/0370-2693(76)90399-3

Anomalous Muon Production in e+ e- Annihilation as Evidence for Heavy Leptons

PLUTO

Collaboration

•

J. Burmester
(
- DESY
)

et al.

- Phys.Lett.B 68 (1977) 297,
- Physics Letters B68 (1977) 297-300 and Hamburg Desy - DESY 77-24 (77,REC.MAY) 10p
•
DOI:
- 10.1016/0370-2693(77)90292-1

Evidence for Heavy Leptons from Anomalous mu e Production in e+ e- Annihilation

PLUTO

Collaboration

•

J. Burmester
(
- DESY
)

et al.

- Phys.Lett.B 68 (1977) 301-304
•
DOI:
- 10.1016/0370-2693(77)90293-3

Measurements of tau Decay Modes and a Precise Determination of the Mass

DASP

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 73 (1978) 109-114
•
DOI:
- 10.1016/0370-2693(78)90183-1

Evidence for the tau --> Neutrino rho pi Decay Mode

PLUTO

Collaboration

•

G. Alexander
(
- DESY
)

et al.

- Phys.Lett.B 73 (1978) 99-104
•
DOI:
- 10.1016/0370-2693(78)90181-8

Observation of $\mu 3 \pi$ Events in $e^+ e^-$ Annihilation

et al.

- Phys.Rev.Lett. 40 (1978) 1120
•
DOI:
- 10.1103/PhysRevLett.40.1120

Lifetimes and branching ratios of heavy leptons

H.B. Thacker
(
- UCLA
)
,
J.J. Sakurai
(
- UCLA
)

- Phys.Lett.B 36 (1971) 103-105
•
DOI:
- 10.1016/0370-2693(71)90119-5

Decay Correlations of Heavy Leptons in e+ e- ---> Lepton+ Lepton-

Yung-Su Tsai
(
- SLAC
)

- Phys.Rev.D 4 (1971) 2821,
- Phys.Rev.D 13 (1976) 771 (erratum)
•
DOI:
- 10.1103/PhysRevD.13.771

Observation of Associated K0(s) electron Production in e+ e- Annihilation

PLUTO

Collaboration

•

J. Burmester
(
- DESY
)

et al.

- Phys.Lett.B 64 (1976) 369-372
•
DOI:
- 10.1016/0370-2693(76)90226-4

On the Origin of Inclusive electron Events in e+ e- Annihilation Between 3.6-GeV and 5.2-GeV

DASP

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 70 (1977) 125,
- Physics Letters B70 (1977) 125-131 and Hamburg Desy - DESY 77-36 (77,REC.JUN) 15p
•
DOI:
- 10.1016/0370-2693(77)90360-4

Decays of a Heavy Lepton Involving the Hadronic Vector Current

Frederick J. Gilman
(
- SLAC
)
,
David Howard Miller
(
- SLAC
)

- Phys.Rev.D 17 (1978) 1846
•
DOI:
- 10.1103/PhysRevD.17.1846

Observation of the Decay τ→π\tau \to \piτ→π Neutrino

Citations per year

Observation of the Decay $\tau \to \pi$ Neutrino