@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="Observation of the Decay B- -> D{\_}s(*) K- l- nu(bar)",
journal="Physical Review Letters",
year="2011",
publisher="Amer Physical Soc",
volume="107",
number="4",
pages="041804--8pp",
abstract="We report the observation of the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb(-1) of data collected at the Y(4S) resonance with the BABAR detector at the PEP-II e(+)e(-) storage rings at SLAC. A simultaneous fit to three D(s)(+) decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B(-) -> D(s)(()*())K(-)l(-)(nu) over bar (l) = [6.13(-1.03)(+1.04)(stat) +/- 0.43(syst) +/- 0.51 (B(D(s)))] X 10(-4), where the last error reflects the limited knowledge of the D(s) branching fractions.",
optnote="WOS:000293131500002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=712), last updated on Wed, 17 Aug 2011 09:16:30 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.107.041804",
opturl="http://arXiv.org/abs/arXiv:1012.4158",
opturl="https://doi.org/10.1103/PhysRevLett.107.041804",
language="English"
}