PT Journal
AU Song, J
   Feijoo, A
   Oset, E
TI Role of meson interactions in the D-s(+) -> pi(+) pi(+) pi(-) eta decay
SO Physical Review D
JI Phys. Rev. D
PY 2022
BP 074027
EP 20pp
VL 106
IS 7
DI 10.1103/PhysRevD.106.074027
LA English
AB We perform a theoretical study of the D-s(+) ->pi(+)pi(+)pi(-)eta decay. We look first at the basic D-s(+) decay at the quark level from external and internal emission. Then we hadronize a pair or two pairs of q (q) over bar states to have mesons at the end. Posteriorly the pairs of mesons are allowed to undergo final state interaction, by means of which the a(0)(980), f(0)(980), a(1)(1260), and b(1)(1235) resonances are dynamically generated. The G parity is used as a filter of the possible channels, and from those with negative G parity only the ones that can lead to pi(+)pi(+)pi(-)eta at the final state are kept. Using transition amplitudes from the chiral unitary approach that generates these resonances and a few free parameters, we obtain a fair reproduction of the six mass distributions reported in the BESIII experiment.
ER