tau LEPTON BRANCHING FRACTIONS

From a study of τ decays using the Time Projection Chamber (TPC) detector at the SLAC e+e− storage ring PEP, we have measured the one-, three-, and five-charged-particle inclusive branching fractions of the τ to be (85.2±1.7)%, (14.8±1.7)%, and 0.3%, respectively. Using particle identification by dEdx in the TPC we have searched for charged K mesons in three-prong τ decays, and have set an upper limit on B(τ±→K±+2 charged+neutrals) of 0.6%.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
TAU: ELECTROPRODUCTION
ELECTROPRODUCTION: TAU
TAU: PAIR PRODUCTION
PAIR PRODUCTION: TAU
TAU: DECAY
DECAY: TAU

References(14)

Figures(0)

Charged hadron production in $e^+e^-$ annihilation at 29-GeV

TPC/Two Gamma

Collaboration

•

H. Aihara

et al.

- Phys.Rev.Lett. 52 (1984) 577
•
DOI:
- 10.1103/PhysRevLett.52.577

MEASUREMENT OF IONIZATION LOSS IN THE RELATIVISTIC RISE REGION WITH THE TIME PROJECTION CHAMBER

TPC/Two Gamma

Collaboration

•

B. Gabioud
(
- UC, Riverside and
- Johns Hopkins U. and
- Tokyo U.
)

et al.

- IEEE Trans.Nucl.Sci. 30 (1983) 63-66,
- Preprint - GABIOUD, B. (REC.NOV.82) 4p,
- IEEE Trans. Nucl. Sci. 30 ( 1983) 63-66 and Preprint - GABIOUD, B. (REC.NOV.82) 4p
•
DOI:
- 10.1109/TNS.1983.4332220

SPATIAL RESOLUTION OF THE PEP-4 TIME PROJECTION CHAMBER

TPC/Two Gamma

Collaboration

•

R.J. Madaras
(
- Yale U.
)

et al.

- IEEE Trans.Nucl.Sci. 30 (1983) 76-81,
- Preprint - MADARAS, R. J. (REC.NOV.82) 6p,
- IEEE Trans. Nucl. Sci. 30 ( 1983) 76-81 and Preprint - MADARAS, R.J. (REC.NOV.82) 6p
•
DOI:
- 10.1109/TNS.1983.4332223

PERFORMANCE OF THE SIGNAL PROCESSING SYSTEM FOR THE TIME PROJECTION CHAMBER. (TALK)

TPC/Two Gamma

Collaboration

•

S.C. Loken
(
- Yale U.
)

et al.

- IEEE Trans.Nucl.Sci. 30 (1983) 162-166,
- Preprint - LOKEN, S. C. (REC.NOV.82) 5p,
- IEEE Trans. Nucl. Sci. 30 ( 1983) 162-166 and Preprint - LOKEN, S.C. (REC.NOV.82) 5p
•
DOI:
- 10.1109/TNS.1983.4332243

PERFORMANCE OF THE HEXAGONAL CALORIMETER AT PEP-4

TPC/Two Gamma

Collaboration

•

H. Aihara
(
- Yale U.
)

et al.

- Nucl.Instrum.Meth. 217 (1983) 259-264,
- Nucl. Instrum. Methods 217 ( 1983) 259-264
•
DOI:
- 10.1016/0167-5087(83)90145-X

A MUON DETECTION SYSTEM FOR THE PEP-4 FACILITY. (TALK)

TPC/Two Gamma

Collaboration

•

J.A. Bakken

et al.

- IEEE Trans.Nucl.Sci. 30 (1983) 67-70,
- IEEE Trans. Nucl. Sci. 30 ( 1983) 67-70
•
DOI:
- 10.1109/TNS.1983.4332221

Distributions in the Process e+ e- ---> mu+ mu- (gamma)

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

- Nucl.Phys.B 177 (1981) 237-262
•
DOI:
- 10.1016/0550-3213(81)90390-4

The Lund Monte Carlo for Jet Fragmentation

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)

- Comput.Phys.Commun. 27 (1982) 243,
- Comput. Phys. Commun. 27 ( 1982) 243-284 and Lund Univ. - LU TP 82-03 (82,REC.MAY) 74p
•
DOI:
- 10.1016/0010-4655(82)90175-8