@Article{LHCbCollaborationAaij_etal2020,
author="LHCb Collaboration (Aaij, R. et al
and Garcia Martin, L. M.
and Henry, L.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.
and Sanchez Mayordomo, C.",
title="Test of lepton universality with Lambda(0)(b) -> pK(-) l(+)l(-)",
journal="Journal of High Energy Physics",
year="2020",
publisher="Springer",
volume="05",
number="5",
pages="40 - 27pp",
optkeywords="B physics; Branching fraction; Flavour Changing Neutral Currents; Hadron; Hadron scattering (experiments); Rare decay",
abstract="The ratio of branching fractions of the decays -> pK(-)mu(+)mu(-),RpK-1{\}}, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb(-1) recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range 0.1 < q(2)< 6.0 GeV2/c(4) and the pK(-) mass range m(pK(-)) < 2600 MeV/c(2), the ratio of branching fractions is measured to be RpK-1=1.17-0.16+0.18 +/- 0.0{\$}{\$} {\{}R{\}}{\textit{}{\{}pK{\}}<^>{\{}-1{\}}={\{}1.17{\}}{}}{\{}-0.16{\}}<^>{\{}+0.18{\}}{\backslash}pm 0.07 {\$}{\$}{\backslash}end{\{}document{\}}, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay -> pK(-)e(+)e(-).",
optnote="WOS:000534629900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4415), last updated on Sat, 13 Jun 2020 11:26:53 +0000",
issn="1029-8479",
doi="10.1007/JHEP05(2020)040",
opturl="https://arxiv.org/abs/1912.08139",
opturl="https://doi.org/10.1007/JHEP05(2020)040",
language="English"
}