%0 Journal Article
%T Search for the CP-violating strong decays eta -> pi(+)pi(-) and eta ' (958) -> pi(+)pi(-)
%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 Physics Letters B
%D 2017
%V 764
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F LHCbCollaborationAaij_etal2017
%O WOS:000390127100035
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2993), last updated on Fri, 31 Mar 2017 09:40:06 +0000
%X A search for the CP-violating strong decays eta -> pi(+)pi(-) and eta ' (958) -> pi(+)pi(-) has been performed using approximately 2.5 x 10(7) events of each of the decays D+ -> pi(+)pi(+)pi(-) and D-s(+) -> pi(+)pi(+)pi(-), recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0 fb(-1) of pp collision data recorded during LHC Run 1 and 0.3fb(-1) recorded in Run 2. No evidence is seen for D-(s)(+) -> pi(+)eta((')) with eta((')) -> pi(+)pi(-), and upper limits at 90% confidence level are set on the branching fractions, B(eta -> pi(+)pi(-)) < 1.6 x 10(-5) and B(eta' -> pi(+)pi(-)) < 1.8 x 10(-5). The limit for the eta decay is comparable with the existing one, while that for the eta' is a factor of three smaller than the previous limit.
%R 10.1016/j.physletb.2016.11.032
%U http://arxiv.org/abs/1610.03666
%U https://doi.org/10.1016/j.physletb.2016.11.032
%P 233-240