Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Meson interaction and resonance formation in the reaction Ds -> pi+ pi+ pi- eta

Jun 7, 2023, 4:55 PM
DAD - Room 5H (Genova, Italy)

DAD - Room 5H

Genova, Italy

Contributed Hadron decays, production and interactions Hadron decays, production and interaction


Eulogio Oset (IFIC, CSIC University of valencia)


We perform a theoretical study of the D+s → π+π+π−η decay. We look first at the basic D+s decay at the quark level from external and internal emission. Then hadronize a pair or two pairs of qq¯ states to have mesons at the end. Posteriorly the pairs of mesons are allowed to undergo final state interaction, by means of which the
a0(980), f0(980), a1(1260), and b1(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 π+π+π−η 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 a BESIII experiment.

Primary author

Eulogio Oset (IFIC, CSIC University of valencia)


Albert Feijoo (IFIC (CSIC-UV)) Dr Jing Song

Presentation materials