%0 Journal Article
%T Observation of the decay Lambda(0)(b) -> pK(-)mu(+)mu(-) and a search for CP violation
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Valls, P.
%A Sanchez Mayordomo, C.
%J Journal of High Energy Physics
%D 2017
%V 06
%N 6
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2017
%O WOS:000404625300001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3194), last updated on Wed, 19 Jul 2017 11:55:59 +0000
%X A search for CP violation in the decay Lambda(0)(b) -> pK(-)mu(+)mu(-) is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb(-1). The Lambda(0)(b) -> pK(-)mu(+)mu(-) decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, Delta A(CP) equivalent to A(CP) (Lambda(0)(b) -> pK(-)mu(+)mu(-)) – A(CP) (Lambda(0)(b) -> pK(-)J/psi) and a(CP)((T) over cap -odd), where the latter is based on asymmetries in the angle between the mu(+)mu(-) and pK(-) decay planes. These are measured to be Delta A(CP) = (-3.5 +/- 5.0 (stat) +/- 0.2 (syst)) x 10(-2), a(CP)((T) over cap -odd) = (1.2 +/- 5.0 (stat) +/- 0.7 (syst)) x 10(-2), and no evidence for CP violation is found.
%K B physics
%K CP violation
%K FCNC Interaction
%K Hadron-Hadron scattering (experiments)
%R 10.1007/JHEP06(2017)108
%U http://arxiv.org/abs/1703.00256
%U https://doi.org/10.1007/JHEP06(2017)108
%P 108-17pp