%0 Journal Article
%T Model-independent confirmation of the Z(4430)(-) state
%A LHCb Collaboration (Aaij, R. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Ruiz Valls, P.
%A Sanchez Mayordomo, C.
%J Physical Review D
%D 2015
%V 92
%N 11
%I Amer Physical Soc
%@ 1550-7998
%G English
%F LHCbCollaborationAaij_etal2015
%O WOS:000367380800002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2512), last updated on Thu, 21 Jan 2016 11:46:02 +0000
%X The decay B-0 -> psi(2S)K+pi(-) is analyzed using 3 fb(-1) of pp collision data collected with the LHCb detector. A model-independent description of the psi(2S)pi mass spectrum is obtained, using as input the K pi mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. The hypothesis that the psi(2S)pi mass spectrum can be described in terms of K pi reflections alone is rejected with more than 8 sigma significance. This provides confirmation, in a model-independent way, of the need for an additional resonant component in the mass region of the Z(4430)(-) exotic state.
%R 10.1103/PhysRevD.92.112009
%U http://arxiv.org/abs/1510.01951
%U https://doi.org/10.1103/PhysRevD.92.112009
%P 112009-15pp