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8–12 Jul 2024
Facultat de Biologia, Universitat de Barcelona
Europe/Madrid timezone

The D+K¯0π+η reaction and a0(980)

11 Jul 2024, 15:40
20m
Aula M4 (Facultat de Biologia)

Aula M4

Facultat de Biologia

Contributed talk D. Hadron Decays

Speaker

Natsumi Ikeno (Tottori University)

Description

The D+Ks0π+η reaction was recently measured by the BESIII collaboration [1]. The reaction is actually D+K¯0π+η, with the K¯0 observed as a Ks0 state.
We study the D+K¯0π+η reaction, where the a0(980) excitation plays a dominant role. We consider mechanisms of external and internal emission at the quark level, hadronize the qq¯ components into two mesons, and allow these mesons to undergo final-state interaction, where the a0(980) state is dynamically generated. While the production of a0(980) is the dominant term, we also find other terms in the reaction that interfere with this production mode. Through interference with it, they lead to a shape of the a0(980) significantly different from the one observed in other experiments, with an apparently much larger width. I will give a presentation based on Ref. [2] and also discuss the D0Kπ+η reaction by changing a d¯u¯ quark in Ref. [3].

[1] M.~Ablikim et al. [BESIII], arXiv:2309.05760 [hep-ex].
[2] N. Ikeno, J. M. Dias, W. H. Liang and E. Oset, arXiv:2402.04073 [hep-ph].
[3] G. Toledo, N. Ikeno and E. Oset, Eur. Phys. J. C81, 268 (2021).

session D. Hadron Decays

Author

Natsumi Ikeno (Tottori University)

Co-authors

Jorgivan Dias (Ins, Theor Phys Beijing) Wei Hong Liang (Guangxi Normal Univ) Eulogio Oset (University of Valencia)

Presentation materials