%0 Journal Article
%T Triangle singularities in B- -> K- pi- D(s0)+ and B- -> K- pi- D(s1)+
%A Sakai, S.
%A Oset, E.
%A Ramos, A.
%J European Physical Journal A
%D 2018
%V 54
%N 1
%I Springer
%@ 1434-6001
%G English
%F Sakai_etal2018
%O WOS:000423446700001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3462), last updated on Thu, 08 Feb 2018 08:51:57 +0000
%X We study the appearance of structures in the decay of the B- into K-pi D--(s0)+ (2317) and K-pi D--(s1)+ (2460) final states by forming invariant mass distributions of pi D--(s0)+ and pi D--(s1)+ pairs, respectively. The structure in the distribution is associated to the kinematical triangle singularity that appears when the B- -> K- K*(0) D-0 (B- -> K- K*(0) D*(0)) decay process is followed by the decay of the K*(0) into pi(-) K+ and the subsequent rescattering of the K+ D-0 (K+ D*(0)) pair forming the D-s0(+) (2317) (D-s1(+) (2460)) resonance. We find this type of non-resonant peaks at 2850MeV in the invariant mass of pi D--(s0) pairs from B- -> K- pi(-) D-s0(+) (2317) decays and around 3000MeV in the invariant mass of pi D--(s1)+ pairs from B- -> K- pi(-) D-s1(+)(2460) decays. By employing the measured branching ratios of the B- -> K- K*(0) D-0 and B- -> K- K*(0) D*(0) decays, we predict the branching ratios for the processes B- into K-pi D--(s0)+ (2317) K-pi D--(s1)+ (2460), in the vicinity of the triangle singularity peak, to be about 8 x 10(-6) and 1 x 10(-6), respectively. The observation of this reaction would also give extra support to the molecular picture of the D-s0(+)(2317) and D-s1(+)(2460).
%R 10.1140/epja/i2018-12450-5
%U http://arxiv.org/abs/1705.03694
%U https://doi.org/10.1140/epja/i2018-12450-5
%P 10-14pp