%0 Journal Article
%T Measurement of CP Violation in the Decay B plus -> K+ pi(0)
%A LHCb Collaboration (Aaij, R. et al
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%J Physical Review Letters
%D 2021
%V 126
%N 9
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2021
%O WOS:000627616700004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4738), last updated on Thu, 18 Mar 2021 11:13:16 +0000
%X A measurement of CP violation in the decay B+ -> K+pi(0) is reported using data corresponding to an integrated luminosity of 5.4 fb- 1 collected with the LHCb experiment at a center-of-mass energy of root s = 13 TeV. The CP asymmetry is measured to be 0.025 +/- 0.015 +/- 0.006 +/- 0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B-0 -> K+pi(-) and B+ -> K+pi 0 decays, known as the K pi puzzle.
%R 10.1103/PhysRevLett.126.091802
%U https://arxiv.org/abs/2012.12789
%U https://doi.org/10.1103/PhysRevLett.126.091802
%P 091802-11pp