@Article{BABARCollaborationdelAmoSanchez_etal2011,
author="BABAR Collaboration (del Amo Sanchez, P. et al
and Lopez-March, N.
and Martinez-Vidal, F.
and Milanes, D. A.
and Oyanguren, A.",
title="Studies of tau(-) -> eta K- nu(tau) and tau(-) -> eta pi(-) nu(tau) at BABAR and a search for a second-class current",
journal="Physical Review D",
year="2011",
publisher="Amer Physical Soc",
volume="83",
number="3",
pages="032002--10pp",
abstract="We report on analyses of tau lepton decays tau(-) -> eta K- nu(tau) and tau(-) -> eta pi(-) nu(tau), with eta -> pi(+) pi(-) pi(0), using 470 fb(-1) of data from the BABAR experiment at PEP-II, collected at center-of-mass energies at and near the Y(4S) resonance. We measure the branching fraction for the tau(-) -> eta K- nu(tau) decay mode, B(tau(-) -> eta K- nu(tau)) = (1.42 +/- 0.11(stat) +/- 0.07(syst)) x 10(-4), and report a 95{\%} confidence level upper limit for the second-class current process tau(-) -> eta pi(-) nu(tau), B(tau(-) -> eta pi(-) nu(tau)) < 9.9 x 10(-5).",
optnote="ISI:000286883700003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=564), last updated on Mon, 11 Apr 2011 17:03:03 +0000",
issn="1550-7998",
doi="10.1103/PhysRevD.83.032002",
opturl="http://arxiv.org/abs/arXiv:1011.3917",
opturl="https://doi.org/10.1103/PhysRevD.83.032002",
archivePrefix="arXiv",
eprint="arXiv:1011.3917",
language="English"
}