@Article{LHCbCollaborationAaij_etal2017,
author="LHCb Collaboration (Aaij, R. et al
and Garcia Martin, L. M.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Valls, P.
and Sanchez Mayordomo, C.",
title="Observation of the suppressed decay Lambda(0)(b) -> p pi(-) mu(+) mu(-)",
journal="Journal of High Energy Physics",
year="2017",
publisher="Springer",
volume="04",
number="4",
pages="029--16pp",
optkeywords="B physics; Branching fraction; Flavour Changing Neutral Currents; Hadron-Hadron scattering (experiments); Rare decay",
abstract="The suppressed decay Lambda(0)(b) -> p pi(-) mu(+) mu(-), excluding the J/psi and psi(2S) -> mu(+) mu(-) resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton- proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected with the LHCb experiment. The Lambda(0)(b) -> p pi(-) mu(+) mu(-) branching fraction is measured relative to the Lambda(0)(b) -> J/psi (-> mu(+) mu(-)) p pi(-) branching fraction giving B (Lambda(0)(b) -> p pi(-) mu(+) mu(-))/B(Lambda(0)(b) -> J/psi (-> mu(+) mu(-)) p pi(-)) = 0.044 +/- 0.012 +/- 0.007, where the first uncertainty is statistical and the second is systematic. This is the first observation of a b -> d transition in a baryonic decay.",
optnote="WOS:000399274800001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3070), last updated on Thu, 11 May 2017 16:22:37 +0000",
issn="1029-8479",
doi="10.1007/JHEP04(2017)029",
opturl="http://arxiv.org/abs/1701.08705",
opturl="https://doi.org/10.1007/JHEP04(2017)029",
archivePrefix="arXiv",
eprint="1701.08705",
language="English"
}