Measurement of the pi+ ---> e+ neutrino branching ratio

Britton, D.I.; Ahmad, S.; Bryman, D.A.; Burnbam, R.A.; Clifford, E.T.H.; Kitching, P.; Kuno, Y.; Macdonald, J.A.; Numao, T.; Olin, A.

doi:10.1103/PhysRevLett.68.3000

Measurement of the pi+ ---> e+ neutrino branching ratio

Jan, 1992

12 pages

Published in:

Phys.Rev.Lett. 68 (1992) 3000-3003

DOI:

10.1103/PhysRevLett.68.3000

PDG:

{{\mathit \pi}^{+}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}

Report number:

TRI-PP-92-15

Experiments:

TRIUMF-248

View in:

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Abstract: (APS)

A new measurement of the π+→e+ν branching ratio gives Rπeν=Γ(π→eν+π→eνγ)/Γ (π→μν+π→μνγ) =[1.2265±0.0034(stat)±0.0044(sys)]×10−4. This result is in agreement with standard model calculations and confirms the hypothesis of electron-muon universality at the 0.2% level.

pi+: leptonic decay
leptonic decay: pi+
pi+: branching ratio
universality: (muon electron)
energy spectrum: (positron)
(positron): energy spectrum
scintillation counter: experimental results
TRIUMF Cycl
pi+ --> positron neutrino
0.083 GeV/c

References(19)

Figures(0)

Radiative corrections to pion beta decay

S.M. Berman
(
- Caltech
)

- Phys.Rev.Lett. 1 (1958) 468
•
DOI:
- 10.1103/PhysRevLett.1.468

Radiative corrections to pi - e decay

Toichiro Kinoshita
(
- Cornell U., LNS
)

- Phys.Rev.Lett. 2 (1959) 477
•
DOI:
- 10.1103/PhysRevLett.2.477

Radiative Corrections to Leptonic Decays of Charged Pseudoscalar Mesons

J.Terrance Goldman
(
- Los Alamos
)
,
W.J. Wilson
(
- LBL, Berkeley
)

- Phys.Rev.D 15 (1977) 709
•
DOI:
- 10.1103/PhysRevD.15.709

A Theorem on pi into 2 Leptons Decays

W.J. Marciano
(
- Rockefeller U.
)
,
A. Sirlin
(
- Rockefeller U.
)

- Phys.Rev.Lett. 36 (1976) 1425
•
DOI:
- 10.1103/PhysRevLett.36.1425

General Theory of Weak Leptonic and Semileptonic Decays. 1. Leptonic Pseudoscalar Meson Decays, with Associated Tests For, and Bounds on, Neutrino Masses and Lepton Mixing

Robert E. Shrock
(
- SUNY, Stony Brook
)

- Phys.Rev.D 24 (1981) 1232
•
DOI:
- 10.1103/PhysRevD.24.1232

Searches for Majoron Production and Other Processes Associated With $\pi \to \nu_e$ Decay

et al.

- Phys.Rev.D 37 (1988) 1131
•
DOI:
- 10.1103/PhysRevD.37.1131

Majoron Emission by Neutrinos

Vernon D. Barger
(
- Wisconsin U., Madison
)
,
Wai-Yee Keung
(
- Brookhaven
)
,
S. Pakvasa
(
- Hawaii U.
)

- Phys.Rev.D 25 (1982) 907
•
DOI:
- 10.1103/PhysRevD.25.907

Properties of Charged Higgs Bosons

- Phys.Rev.D 19 (1979) 945
•
DOI:
- 10.1103/PhysRevD.19.945

Virtual Effects of Higgs Particles

- Nucl.Phys.B 179 (1981) 62-84
•
DOI:
- 10.1016/0550-3213(81)90249-2

$\pi \ell$ 2, $K \ell$ 3 and $K^0 - \bar{K}$ 0 Constraints on Leptoquarks and Supersymmetric Particles

Oruganti U. Shanker
(
- TRIUMF
)

- Nucl.Phys.B 204 (1982) 375-386
•
DOI:
- 10.1016/0550-3213(82)90196-1

The Fermion Mass Scale and Possible Effects of Higgs Bosons on Experimental Observables

- Nucl.Phys.B 161 (1979) 493-532
•
DOI:
- 10.1016/0550-3213(79)90225-6

Measurement of the $\pi \to \nu_e$ Branching Ratio

D.A. Bryman
(
- TRIUMF and
- CRPP, Ottawa
)
,
M.S. Dixit
(
- TRIUMF and
- CRPP, Ottawa
)
,
R. Dubois
(
- TRIUMF and
- CRPP, Ottawa
)
,
J.A. Macdonald
(
- TRIUMF and
- CRPP, Ottawa
)
,
T. Numao
(
- TRIUMF and
- CRPP, Ottawa
)

et al.

- Phys.Rev.D 33 (1986) 1211,
- In *Ericson, T.E.O. et al.: The meson factories* 187-197, and Phys. Rev. D33 (1986) 1211-1221. Vancouver TRIUMF - TRI-PP-85-089 (85,rec.Mar.86) 36 p
•
DOI:
- 10.1103/PhysRevD.33.1211

Constraints on Massive Neutrinos in $\pi \to \nu_e$ Decay

G. Azuelos
(
- TRIUMF
)
,
D.I. Britton
(
- TRIUMF and
- Victoria U.
)
,
D.A. Bryman
(
- TRIUMF and
- Victoria U.
)
,
E.T.H. Clifford
(
- TRIUMF and
- Victoria U.
)
,
P. Kitching
(
- TRIUMF and
- Alberta U.
)

et al.

- Phys.Rev.Lett. 56 (1986) 2241,
- In *Ericson, T.E.O. et al.: The meson factories* 232-234, and Phys. Rev. Lett. 56 (1986) 2241-2243. Vancouver TRIUMF - TRI-PP-86-008 (86,rec.Jun.) 9 p
•
DOI:
- 10.1103/PhysRevLett.56.2241