Search for the reactions $e^{+} e^{-} \to \mu^{+} \tau^{-}$ and $e^{+} e^{-} \to e^{+} \tau^{-}$

Aubert, Bernard; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.

doi:10.1103/PhysRevD.75.031103

Search for the reactions $e^{+} e^{-} \to \mu^{+} \tau^{-}$ and $e^{+} e^{-} \to e^{+} \tau^{-}$

BaBar

Collaboration

Jul, 2006

7 pages

Published in:

Phys.Rev.D 75 (2007) 031103

e-Print:

hep-ex/0607044 [hep-ex]

DOI:

10.1103/PhysRevD.75.031103

PDG:

{\mathit \sigma (}

{{\mathit e}^{+}}

{{\mathit e}^{-}}

\rightarrow

{{\mathit e}^{\pm}}{{\mathit \tau}^{\mp}}{)}

/

{\mathit \sigma (}

{{\mathit e}^{+}}

{{\mathit e}^{-}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{)}

Report number:

SLAC-PUB-11972,
BABAR-PUB-06-009

Experiments:

SLAC-PEP2-BABAR

View in:

reference search10 citations

Citations per year

Abstract:

We report on a search for the lepton-flavor-violating processes

e^+e^- \to \mu^+\tau^-

and

e^+e^- \to e^+\tau^-

. The data sample corresponds to an integrated luminosity of 211 fb

^{-1}

recorded by the BaBar experiment at the SLAC PEP-II asymmetric-energy B Factory at a center-of-mass energy of \sqrt{s} = 10.58\ensuremath{\mathrm{Ge\kern -0.1em V}}. We find no evidence for a signal and set the 90% confidence level upper limits on the cross sections to be

\sigma_{\mu\tau} <3.8

\ensuremath{fb} and

\sigma_{e\tau} <9.2

\ensuremath{fb}. The ratio of the cross sections with respect to the dimuon cross section are measured to be

\sigma_{\mu\tau}/\sigma_{\mu\mu} < 3.4\times10^{-6}

and

\sigma_{e\tau}/\sigma_{\mu\mu} < 8.2\times10^{-6}

.

Note:

8 pages, 3 postscript figures, submitted to PRD-RC: extra figure, confidence limits now for 90% and 95% Report-no: SLAC-PUB-11972

13.35.Dx
14.60.Fg
11.30.Hv
electron positron: colliding beams
electron positron: annihilation
lepton: pair production
flavor: violation
tau: semileptonic decay
channel cross section: upper limit
channel cross section: ratio

References(30)

Figures(0)

Measurement of the solar electron neutrino flux with the Homestake chlorine detector

B.T. Cleveland
(
- Pennsylvania U.
)
,
Timothy Daily
(
- Pennsylvania U.
)
,
Raymond Davis, Jr.
(
- Pennsylvania U.
)
,
James R. Distel
(
- Pennsylvania U.
)
,
Kenneth Lande
(
- Pennsylvania U.
)

et al.

- Astrophys.J. 496 (1998) 505-526
•
DOI:
- 10.1086/305343

Evidence for oscillation of atmospheric neutrinos

Super-Kamiokande

Collaboration

•

Y. Fukuda
(
- Tokyo U., ICRR
)

et al.

- Phys.Rev.Lett. 81 (1998) 1562-1567
•
e-Print:
- hep-ex/9807003
•
DOI:
- 10.1103/PhysRevLett.81.1562

Direct evidence for neutrino flavor transformation from neutral current interactions in the Sudbury Neutrino Observatory

SNO

Collaboration

•

Q.R. Ahmad

et al.

- Phys.Rev.Lett. 89 (2002) 011301
•
e-Print:
- nucl-ex/0204008
•
DOI:
- 10.1103/PhysRevLett.89.011301

Theoretical expectations for rare and forbidden tau decays

Ernest Ma
(
- UC, Riverside
)

- eConf C0209101 (2002) WE01,
- Nucl.Phys.B Proc.Suppl. 123 (2003) 125-128,
•
e-Print:
- hep-ph/0209170
•
DOI:
- 10.1016/S0920-5632(03)80316-X

Review of particle physics. Particle Data Group

S. Eidelman
(
- Novosibirsk, IYF
)
,
K.G. Hayes
(
- Hillsdale Coll.
)
,
K.A. Olive
(
- Minnesota U.
)
,
M. Aguilar-Benitez
(
- Madrid, CIEMAT
)
,
Claude Amsler
(
- Zurich U.
)

et al.

- Phys.Lett.B 592 (2004) 1-4, 1
•
DOI:
- 10.1016/j.physletb.2004.06.001

Search for lepton flavor violation in the decay $\tau \to \mu \gamma$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 95 (2005) 041802
•
e-Print:
- hep-ex/0502032
•
DOI:
- 10.1103/PhysRevLett.95.041802

Search for lepton flavor violation in the decay $\tau^\pm \to e^\pm \gamma$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 96 (2006) 041801
•
e-Print:
- hep-ex/0508012
•
DOI:
- 10.1103/PhysRevLett.96.041801

Kinematical lepton transmutation in e+ e- collision and vector boson decay

Jose Bordes
(
- Valencia U.
)
,
Hong-Mo Chan
(
- Rutherford
)
,
Sheung Tsun Tsou
(
- Oxford U., Inst. Math.
)

e-Print:
- hep-ph/0111175

Lepton transmutation in the dualized standard model

Jose Bordes
(
- Valencia U.
)
,
Hong-mo Chan
(
- Rutherford
)
,
Sheung Tsun Tsou
(
- Oxford U., Inst. Math.
)

- Phys.Rev.D 65 (2002) 093006
•
e-Print:
- hep-ph/0111369
•
DOI:
- 10.1103/PhysRevD.65.093006

Circumstantial evidence for rotating mass matrix from fermion mass and mixing data

Jose Bordes
(
- Valencia U.
)
,
Hong-Mo Chan
(
- Rutherford and
- Oxford U.
)
,
Sheung Tsun Tsou
(
- Oxford U., Inst. Math.
)

- Eur.Phys.J.C 27 (2003) 189-200
•
e-Print:
- hep-ph/0203124
•
DOI:
- 10.1140/epjc/s2002-01108-0

A Search for Elastic Nondiagonal Lepton Pair Production in $e^+ e^-$ Annihilation at $\sqrt{s}=29$ -{GeV}

et al.

- Phys.Rev.Lett. 66 (1991) 1007-1010
•
DOI:
- 10.1103/PhysRevLett.66.1007

A Search for lepton flavor violation in Z0 decays

OPAL

Collaboration

•

M.Z. Akrawy
(
- Queen Mary, U. of London
)

et al.

- Phys.Lett.B 254 (1991) 293-302
•
DOI:
- 10.1016/0370-2693(91)90437-U

Searches for new particles in $Z$ decays using the ALEPH detector

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Phys.Rept. 216 (1992) 253-340
•
DOI:
- 10.1016/0370-1573(92)90177-2

A Search for lepton flavor violation in Z0 decays

DELPHI

Collaboration

•

P. Abreu

et al.

- Phys.Lett.B 298 (1993) 247-256
•
DOI:
- 10.1016/0370-2693(93)91737-8

Search for lepton flavor violation in Z decays

L3

Collaboration

•

O. Adriani

et al.

- Phys.Lett.B 316 (1993) 427-434,
- Phys. Lett. B316 (1993) 427-434. and CERN Geneva - CERN-PPE-93-151 (93/08,rec.Oct.) 16 p. C
•
DOI:
- 10.1016/0370-2693(93)90348-L

Search for lepton flavor violation in e+ e- collisions at s**(1/2) = 189-GeV - 209-GeV

OPAL

Collaboration

•

G. Abbiendi

et al.

- Phys.Lett.B 519 (2001) 23-32
•
e-Print:
- hep-ex/0109011
•
DOI:
- 10.1016/S0370-2693(01)01086-3

The BaBar detector

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 479 (2002) 1-116
•
e-Print:
- hep-ex/0105044
•
DOI:
- 10.1016/S0168-9002(01)02012-5

Koralb: An Upgrade to version 2.4

Stanislaw Jadach
(
- Cracow, INP and
- CERN
)
,
Zbigniew Was
(
- Cracow, INP and
- CERN
)

- Comput.Phys.Commun. 85 (1995) 453-462
•
DOI:
- 10.1016/0010-4655(94)00091-F

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

Branching fractions of tau leptons decays to three charged hadrons

CLEO

Collaboration

•

Roy A. Briere
(
- Carnegie Mellon U.
)

et al.

- Phys.Rev.Lett. 90 (2003) 181802
•
e-Print:
- hep-ex/0302028
•
DOI:
- 10.1103/PhysRevLett.90.181802

Precision calculation for e+ e- ---> 2f: The KK MC project

- Nucl.Phys.B Proc.Suppl. 116 (2003) 73-77,
•
e-Print:
- hep-ph/0211132
•
DOI:
- 10.1016/S0920-5632(03)80147-0

PHOTOS: A Universal Monte Carlo for QED radiative corrections. Version 2.0

Elisabetta Barberio
(
- CERN and
- Siegen U.
)
,
Zbigniew Was
(
- CERN and
- Cracow, INP
)

- Comput.Phys.Commun. 79 (1994) 291-308
•
DOI:
- 10.1016/0010-4655(94)90074-4

The EvtGen particle decay simulation package

D.J. Lange
(
- LLNL, Livermore
)

- Nucl.Instrum.Meth.A 462 (2001) 152-155
•
DOI:
- 10.1016/S0168-9002(01)00089-4

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

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Search for the reactions e+e−→μ+τ−e^{+} e^{-} \to \mu^{+} \tau^{-}e+e−→μ+τ− and e+e−→e+τ−e^{+} e^{-} \to e^{+} \tau^{-}e+e−→e+τ−

Citations per year

Search for the reactions $e^{+} e^{-} \to \mu^{+} \tau^{-}$ and $e^{+} e^{-} \to e^{+} \tau^{-}$