Measurements of the inclusive branching ratios of tau leptons to K0(s) and charged K* (892)

We describe measurements of inclusive branching ratios of the tau lepton to K S 0 and charged K ∗ (892) using Z 0 → τ + τ − candidates collected with the OPAL detector at LEP during 1990–1992. From a total of 61 854 tau candidates we find: Br (τ − → K S 0 X − ν τ ) = 0.97 ± 0.09( stat. ) ± 0.06( syst. ) % Br (τ − → K ∗− ≥0 h 0 ν τ ) = 1.94 ± 0.27( stat. ) ± 0.15( syst. ) % where X − refers to any configuration of particles with charge −1 and h 0 is any neutral hadron other than the K S 0 .

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: leptonic decay
leptonic decay: Z0
tau: pair production
pair production: tau

References(25)

Figures(0)

Symmetry, superconvergence, and sum rules for spectral functions

- Phys.Rev.Lett. 18 (1967) 761-764
•
DOI:
- 10.1103/PhysRevLett.18.761

Asymptotic Flavor Symmetry and Its Implication on $\tau \to \rho$ \nu_\tau $and$ K^* $\nu_\tau$ Branching Ratio and Ground State 1-- Meson Multiplet

S. Oneda
(
- Maryland U.
)

- Phys.Rev.D 35 (1987) 397
•
DOI:
- 10.1103/PhysRevD.35.397

Review of particle properties. Particle Data Group

et al.

- Phys.Rev.D 45 (1992) S1,
- Phys.Rev.D 46 (1992) 5210 (erratum)
•
DOI:
- 10.1103/PhysRevD.45.S1

The Physics of the tau Lepton

B.C. Barish
(
- Caltech
)
,
R. Stroynowski
(
- Caltech
)

- Phys.Rept. 157 (1988) 1
•
DOI:
- 10.1016/0370-1573(88)90103-2

Calculation of Exclusive Decay Modes of the tau

Frederick J. Gilman
(
- SLAC
)
,
Sun Hong Rhie
(
- SLAC
)

- Phys.Rev.D 31 (1985) 1066
•
DOI:
- 10.1103/PhysRevD.31.1066

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

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

An Upper Bound on the \nu_\tau $Mass From the Previously Unobserved Decay Mode$ \tau \to K K \pi $\nu_\tau$

DELCO

Collaboration

•

Geoffrey B. Mills
(
- Caltech and
- SLAC and
- Stanford U., Phys. Dept.
)

et al.

- Phys.Rev.Lett. 54 (1985) 624
•
DOI:
- 10.1103/PhysRevLett.54.624

Implications of tau decays into strange scalar and axial vector mesons

Harry J. Lipkin
(
- Weizmann Inst. and
- Tel Aviv U. and
- Argonne
)

- Phys.Lett.B 303 (1993) 119-124
•
e-Print:
- hep-ph/9301206
•
DOI:
- 10.1016/0370-2693(93)90054-L

Second Class Currents or Symmetry Breaking in $\tau$ Decay

Edmond L. Berger
(
- Argonne
)
,
Harry J. Lipkin
(
- Argonne and
- Weizmann Inst.
)

- Phys.Lett.B 189 (1987) 226-231
•
DOI:
- 10.1016/0370-2693(87)91301-3

Study of K* production in tau decay

CLEO

Collaboration

•

M. Goldberg
(
- Syracuse U.
)

et al.

- Phys.Lett.B 251 (1990) 223-228
•
DOI:
- 10.1016/0370-2693(90)90256-6

Measurement of the Decays $\tau^- \to K^*$ - \nu_\tau $and$ \tau^- \to \rho^- $\nu_\tau$

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Z.Phys.C 41 (1988) 1
•
DOI:
- 10.1007/BF01412572

Search for Resonant Bhabha Scattering around an Invariant Mass of 1.8 MeV

- Phys.Lett.B 205 (1988) 223-227
•
DOI:
- 10.1016/0370-2693(88)91654-1

Experimental limit on the decay $\tau^- \to \tau^-\nu K^- K^0$

TPC/Two Gamma

Collaboration

•

H. Aihara

et al.

- Phys.Rev.Lett. 59 (1987) 751
•
DOI:
- 10.1103/PhysRevLett.59.751

Measurement of $\tau$ branching ratios

TPC/Two Gamma

Collaboration

•

H. Aihara

et al.

- Phys.Rev.D 35 (1987) 1553
•
DOI:
- 10.1103/PhysRevD.35.1553

Measurement of the Branching Fractions $\tau^- \to \rho^-$ \nu_\tau $and$ \tau^- \to K^* $- \nu_\tau$

et al.

- Phys.Rev.Lett. 56 (1986) 812
•
DOI:
- 10.1103/PhysRevLett.56.812

The Trigger system of the OPAL experiment at LEP

OPAL

Collaboration

•

M. Arignon
(
- Saclay
)

et al.

- Nucl.Instrum.Meth.A 313 (1992) 103-125
•
DOI:
- 10.1016/0168-9002(92)90087-K

The OPAL silicon microvertex detector

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 324 (1993) 34-52
•
DOI:
- 10.1016/0168-9002(93)90964-J

Measurement of the tau- ---> h- pi0 tau-neutrino and tau- ---> h- >= 2 pi0 tau-neutrino branching ratios

OPAL

Collaboration

•

R. Akers

et al.

- Phys.Lett.B 328 (1994) 207-222
•
DOI:
- 10.1016/0370-2693(94)90452-9

Measurement of branching ratios and tau polarization from tau ---> e neutrino anti-neutrino , tau ---> mu neutrino anti-neutrino, and tau ---> pi (K) neutrino decays at LEP

OPAL

Collaboration

•

G. Alexander
(
- Tel Aviv U.
)

et al.

- Phys.Lett.B 266 (1991) 201-217
•
DOI:
- 10.1016/0370-2693(91)90768-L

- Z.Phys.C 53 175

The Monte Carlo program KORALZ, version 4.0, for the lepton or quark pair production at LEP / SLC energies

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

- Comput.Phys.Commun. 79 (1994) 503-522
•
DOI:
- 10.1016/0010-4655(94)90190-2

The Monte Carlo program KORALZ, version 3.8, for the lepton or quark pair production at LEP / SLC energies

Stanislaw Jadach
(
- CERN
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC
)
,
Zbigniew Was
(
- Cracow, INP
)

- Comput.Phys.Commun. 66 (1991) 276-292,
- Comput. Phys. Commun. 66 (1991) 276-292 and CERN Geneva - TH. 5994 (91/02,rec.May) 24 p
•
DOI:
- 10.1016/0010-4655(91)90077-X

The Detector simulation program for the OPAL experiment at LEP

OPAL

Collaboration

•

J. Allison
(
- Manchester U.
)

et al.

- Nucl.Instrum.Meth.A 317 (1992) 47-74
•
DOI:
- 10.1016/0168-9002(92)90593-S

A Measurement of K*+- (892) production in hadronic Z0 decays

OPAL

Collaboration

•

P.D. Acton

et al.

- Phys.Lett.B 305 (1993) 407-414
•
DOI:
- 10.1016/0370-2693(93)91075-X