TY  - JOUR
AU  - Sakai, S.
AU  - Oset, E.
AU  - Ramos, A.
PY  - 2018
DA  - 2018//
TI  - Triangle singularities in B- -> K- pi- D(s0)+ and B- -> K- pi- D(s1)+
T2  - Eur. Phys. J. A
JO  - European Physical Journal A
SP  - 10
EP  - 14pp
VL  - 54
IS  - 1
PB  - Springer
AB  - 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).
SN  - 1434-6001
UR  - http://arxiv.org/abs/1705.03694
UR  - https://doi.org/10.1140/epja/i2018-12450-5
DO  - 10.1140/epja/i2018-12450-5
LA  - English
N1  - WOS:000423446700001
ID  - Sakai_etal2018
ER  -