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  4. Measurement of the branching fractions and the invariant mass distributions for τ^{-}→h^{-}h^{+}h^{-}ν_{τ} decays
 
research article

Measurement of the branching fractions and the invariant mass distributions for τ^{-}→h^{-}h^{+}h^{-}ν_{τ} decays

Lee, M.
•
Aihara, H.
•
Arinstein, K.
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2010
Physical Review D [1970-2015]

We present a study of tau(-)->pi(-)pi(+)pi(-)nu(tau), tau(-) -> K-pi(+)pi(-)nu(tau), tau(-) -> K-K+ pi(-)nu(tau), and tau(-) -> K-K+K-nu(tau) decays using a 666 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider at and near a center- of- mass energy of 10.58 GeV. The branching fractions are measured to be B(tau(-)->pi(-)pi(+)pi(-)nu(tau)) = (8.42 +/- 0.00(-0.25)(+0.26)) x 10(-2), B(tau(-)-> K-pi(+)pi(-)nu(tau)) = 3.30 +/- 0.01(-0.17)(+0.16)) x 10(-3), B(tau(-)-> K-K+pi(-)nu(tau)) = (1.55 +/- 0.01(-0.05)(+0.06)) x 10(-3), and B(tau(-)-> K-K+K-nu(tau)), = (3.29 +/- 0.17(-0.20)(+0.19)) x 10(-5), where the first uncertainty is statistical and the second is systematic. These branching fractions do not include contributions from modes in which a pi(+)pi(-) pair originates from a K-S(0) decay. We also present the unfolded invariant mass distributions for these decays.

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Type
research article
DOI
10.1103/PhysRevD.81.113007
Web of Science ID

WOS:000279028000001

Author(s)
Lee, M.
Aihara, H.
Arinstein, K.
Aulchenko, V.
Aushev, T.
Bakich, A.
Barberio, E.
Bay, A.  
Belous, K.
Bhardwaj, V.
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Corporate authors
Belle Collaboration
Date Issued

2010

Publisher

American Physical Society

Published in
Physical Review D [1970-2015]
Volume

81

Issue

11

Article Number

113007

Subjects

Current-Algebra

•

Monte-Carlo

•

Belle

•

Kaons

•

Identification

•

Kekb

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
Available on Infoscience
November 5, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/57139
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