TY  - JOUR
AU  - Pavao, R. P.
AU  - Sakai, S.
AU  - Oset, E.
PY  - 2017
DA  - 2017//
TI  - Triangle singularities in B- -> D*(0)pi(-)pi(0)eta and B- -> D*(0)pi(-)pi(+)pi(-)
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 599
EP  - 8pp
VL  - 77
IS  - 9
PB  - Springer
AB  - The possible role of the triangle mechanism in the B- decay into D*(0)pi(-)pi(0)eta and D*(0)pi(-)pi(+)pi(-) is investigated. In this process, the triangle singularity appears from the decay of B- into D*K-0(-) K*(0) followed by the decay of K-*0 into pi(-) K+ and the fusion of the K+ K-, which forms the a(0)(980) or f(0)(980), which finally decay into pi(0)eta or pi(+)pi(-), respectively. The triangle mechanism from the (K) over bar * K (K) over bar loop generates a peak around 1420 MeV in the invariant mass of pi(-) a(0) or pi(-) f(0), and it gives sizable branching fractions, Br(B- -> D*(0)pi(-) a(0); a(0) -> pi(0)eta) = (1.66 +/- 0.45) x 10(-6) and Br(B- -> D*(0)pi(-) f(0); f(0) -> pi(+)pi(-)) = (2.82 +/- 0.75) x 10(-6).
SN  - 1434-6044
UR  - http://arxiv.org/abs/1706.08723
UR  - https://doi.org/10.1140/epjc/s10052-017-5169-y
DO  - 10.1140/epjc/s10052-017-5169-y
LA  - English
N1  - WOS:000410891900001
ID  - Pavao_etal2017
ER  -