Experimental test of lepton universality in tau decay

Anastassov, A.; Blinov, S.; Duboscq, J.E.; Fisher, K.D.; Fujino, D.; Fulton, R.; Gan, K.K.; Hart, T.; Honscheid, K.; Kagan, H.

doi:10.1103/PhysRevD.55.2559

Experimental test of lepton universality in tau decay

CLEO

Collaboration

•

A. Anastassov
(
- Ohio State U.
)

Nov, 1996

45 pages

Published in:

Phys.Rev.D 55 (1997) 2559-2576,
Phys.Rev.D 58 (1998) 119904 (erratum)

DOI:

PDG:

{{\mathit \tau}^{-}}

\rightarrow

{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{{\mu}}}}{{\mathit \nu}_{{{\tau}}}}

Report number:

CLNS-96-1431,
CLEO-96-16,
SLAC-PUB-9839

Experiments:

CESR-CLEO

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Abstract: (APS)

The branching fractions for τ→eνντ, μνντ, and hντ are measured using data collected with the CLEO detector at the CESR e+e− collider: Be=0.1776±0.0006±0.0017, Bμ=0.1737±0.0008±0.0018, and Bh=0.1152±0.0005±0.0012, where the first error is statistical, the second systematic, and h refers to either a charged π or K. Also measured is the τ mass, mτ=(1778.2±1.4) MeV. Lepton universality is affirmed by the relative branching fractions (Bμ/Be=0.9777±0.0063±0.0087, Bh/Be=0.6484±0.0041±0.0060) and the charged-current gauge coupling-constant ratios (gμ/ge=1.0026±0.0055, gτ/gμ=0.9990±0.0098). The τ mass result may be recast as a τ neutrino mass limit, mντ<60 MeV at 95% C.L.

14.60.Lm
14.60.Pq
14.60.Fg
13.35.Dx
electron positron: colliding beams
electron positron: annihilation
tau: electroproduction
tau: pair production
tau: leptonic decay
tau: semileptonic decay

References(31)

Figures(0)

Electroweak Radiative Corrections to tau Decay

W.J. Marciano
(
- Brookhaven
)
,
A. Sirlin
(
- New York U.
)

- Phys.Rev.Lett. 61 (1988) 1815-1818
•
DOI:
- 10.1103/PhysRevLett.61.1815

Radiative corrections to the decay tau ---> pi (K) tau-neutrino. 2

R. Decker
(
- Karlsruhe U.
)
,
M. Finkemeier
(
- Karlsruhe U.
)

- Phys.Lett.B 334 (1994) 199-202
•
DOI:
- 10.1016/0370-2693(94)90611-4

Short and long distance effects in the decay tau ---> pi tau-neutrino (gamma)

- Nucl.Phys.B 438 (1995) 17-53
•
e-Print:
- hep-ph/9403385
•
DOI:
- 10.1016/0550-3213(95)00597-L

Radiative corrections to pi(lepton 2) decays

William J. Marciano
(
- Brookhaven
)
,
A. Sirlin
(
- New York U.
)

- Phys.Rev.Lett. 71 (1993) 3629-3632
•
DOI:
- 10.1103/PhysRevLett.71.3629

- Nucl.Phys.B 40 3

Review of particle physics. Particle Data Group

et al.

- Phys.Rev.D 54 (1996) 1, 1-720
•
DOI:
- 10.1103/PhysRevD.54.1

A Measurement of the tau lepton mass

CLEO

Collaboration

•

R. Ballest
(
- Colorado U.
)

et al.

- Phys.Rev.D 47 (1993) R3671-R3675,
- Phys. Rev. D47 (1993) 3671-3675. and Cornell Univ. Ithaca - CLNS-93-1194 (93,rec.Mar.) 12 p. and Rochester Univ. - CLEO 93-02 (93,rec.Mar.) 12 p
•
DOI:
- 10.1103/PhysRevD.47.R3671

The CLEO-II detector

CLEO

Collaboration

•

Y. Kubota
(
- Minnesota U.
)

et al.

- Nucl.Instrum.Meth.A 320 (1992) 66-113
•
DOI:
- 10.1016/0168-9002(92)90770-5

CLEO-II trigger system

C. Bebek
(
- Cornell U., LNS
)
,
Glen D. Crawford
(
- Cornell U., LNS
)
,
J. Dobbins
(
- Cornell U., LNS
)
,
R.S. Galik
(
- Cornell U., LNS
)
,
J. Kandaswamy
(
- Cornell U., LNS
)

et al.

- Nucl.Instrum.Meth.A 302 (1991) 261-276
•
DOI:
- 10.1016/0168-9002(91)90409-J

A Measurement of the branching fraction $\mathcal{B} (\tau^- \to h^- \pi^0 \nu_{\tau})$

CLEO

Collaboration

•

M. Artuso
(
- Syracuse U.
)

et al.

- Phys.Rev.Lett. 72 (1994) 3762-3766
•
e-Print:
- hep-ph/9404310
•
DOI:
- 10.1103/PhysRevLett.72.3762

Luminosity measurement with the CLEO-II detector

CLEO

Collaboration

•

Glen D. Crawford
(
- Ohio State U.
)

et al.

- Nucl.Instrum.Meth.A 345 (1994) 429-439,
- Nucl. Instrum. Methods A345 (1994) 429-439, and Cornell Univ. Ithaca - CLNS-94-1268 (94/01,rec.Feb.) 16 p. Rochester Univ. - CLEO 94-03 (94/01,rec.Feb.) 16 p
•
DOI:
- 10.1016/0168-9002(94)90494-4

Monte Carlo Simulation of the Process e+ e- ---> tau+ tau- Including Radiative O(alpha**3) QED Corrections, Mass and Spin

S. Jadach
(
- Jagiellonian U.
)
,
Z. Was
(
- Jagiellonian U.
)

- Comput.Phys.Commun. 36 (1985) 191-211,
- Comput. Phys. Commun. 36 ( 1985) 191-211
•
DOI:
- 10.1016/0010-4655(85)90123-7

KORALB version 2.1: An Upgrade with TAUOLA library of tau decays

Stanislaw Jadach
(
- CERN
)
,
Zbigniew Was
(
- CERN
)

- Comput.Phys.Commun. 64 (1991) 267-274,
- Comput. Phys. Commun. 64 (1991) 267-274 and CERN Geneva - TH. 5855 (90,rec.Oct.) 10 p
•
DOI:
- 10.1016/0010-4655(91)90037-L

TAUOLA: A Library of Monte Carlo programs to simulate decays of polarized tau leptons

- Comput.Phys.Commun. 64 (1990) 275-299,
- Comput. Phys. Commun. 64 (1990) 275-299 and CERN Geneva - TH. 5856 (90,rec.Oct.) 37 p
•
DOI:
- 10.1016/0010-4655(91)90038-M

The tau decay library TAUOLA, update with exact O(alpha) QED corrections in tau ---> mu. (e) neutrino anti-neutrino decay modes

M. Jezabek
(
- Cracow, INP
)
,
Z. Was
(
- Cracow, INP
)
,
S. Jadach
(
- CERN and
- Jagiellonian U.
)
,
Johann H. Kuhn
(
- Karlsruhe U.
)

- Comput.Phys.Commun. 70 (1992) 69-76,
- Comput. Phys. Commun. 70 (1992) 69-76 and CERN Geneva - TH. 6195 (91/08,rec.Nov.) 8 p
•
DOI:
- 10.1016/0010-4655(92)90092-D

The tau decay library TAUOLA: Version 2.4

S. Jadach
(
- CERN and
- Cracow, INP
)
,
Z. Was
(
- CERN and
- Cracow, INP
)
,
R. Decker
(
- Karlsruhe U.
)
,
Johann H. Kuhn
(
- Karlsruhe U.
)

- Comput.Phys.Commun. 76 (1993) 361-380
•
DOI:
- 10.1016/0010-4655(93)90061-G

Two Photon Processes at Very High-Energies

J.A.M. Vermaseren
(
- NIKHEF, Amsterdam
)

- Nucl.Phys.B 229 (1983) 347-371
•
DOI:
- 10.1016/0550-3213(83)90336-X

The Two photon particle production mechanism. Physical problems. Applications. Equivalent photon approximation

V.M. Budnev
(
- Sobolev IM, Novosibirsk
)
,
I.F. Ginzburg
(
- Sobolev IM, Novosibirsk
)
,
G.V. Meledin
(
- Sobolev IM, Novosibirsk
)
,
V.G. Serbo
(
- Sobolev IM, Novosibirsk
)

- Phys.Rept. 15 (1975) 181-281
•
DOI:
- 10.1016/0370-1573(75)90009-5

Distributions in the Process e+ e- ---> e+ e- (Gamma)

Frits A. Berends
(
- Leiden U.
)
,
R. Kleiss
(
- Leiden U.
)

- Nucl.Phys.B 228 (1983) 537-551
•
DOI:
- 10.1016/0550-3213(83)90558-8

QED multi - photon corrections to Bhabha scattering at low angles: Monte Carlo solution

S. Jadach
(
- CERN
)
,
E. Richter-Was
(
- Jagiellonian U.
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC and
- CERN
)
,
Z. Was
(
- Cracow, INP
)

- Phys.Lett.B 268 (1991) 253-262
•
DOI:
- 10.1016/0370-2693(91)90813-6

Higher order QED corrections to Bhabha scattering at low angles

S. Jadach
(
- CERN
)
,
E. Richter-Was
(
- Jagiellonian U.
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC
)
,
Z. Was
(
- Cracow, INP and
- CERN
)

- Phys.Lett.B 260 (1991) 438-446
•
DOI:
- 10.1016/0370-2693(91)91640-H

Analytical O(alpha) distributions for Bhabha scattering at low angles

S. Jadach
(
- CERN
)
,
E. Richter-Was
(
- Jagiellonian U.
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC
)
,
Z. Was
(
- Cracow, INP and
- CERN
)

- Phys.Lett.B 253 (1991) 469-477
•
DOI:
- 10.1016/0370-2693(91)91754-J

Multi - Photon Monte Carlo for Bhabha Scattering at Low Angles

Stanislaw Jadach
(
- Jagiellonian U. and
- CERN and
- SLAC
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC
)

- Phys.Rev.D 40 (1989) 3582-3589
•
DOI:
- 10.1103/PhysRevD.40.3582

TWO PHOTON BREMSSTRAHLUNG

Ronald Kleiss
(
- CERN
)
,
Steven van der Marck
(
- Leiden U.
)

- Nucl.Phys.B 342 (1990) 61-94
•
DOI:
- 10.1016/0550-3213(90)90571-T

Measurement of the tau lepton electronic branching fraction

CLEO

Collaboration

•

D.S. Akerib
(
- Caltech
)

et al.

- Phys.Rev.Lett. 69 (1992) 3610-3614,
- Phys.Rev.Lett. 71 (1993) 3395 (erratum),
- Phys. Rev. Lett. 69 (1992) 3610-3614 and Cornell Univ. Ithaca - CLNS-92-1163 (92/09,rec.Jan.93) 13 p. Rochester Univ. - CLEO 92-08 (92/09,rec.Jan.93) 13 p.
•
DOI:
- 10.1103/PhysRevLett.69.3610

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