MESON2026

Session

Parallel session A4

Jun 26, 2026, 5:20 PM

Medium lecture hall (A) (Auditorium Maximum)

Conveners

Parallel session A4

• Daniel Winney (ICN-UNAM)

17. Mechanisms of $D \bar D$ pair production in $e^+ e^- \to e^+ e^- D \bar D$ and $A A \to A A D \bar D$ reactions and production of exotic charmonia

Antoni Szczurek (Institute of Nuclear Physics PAS and Rzeszow University) , Piotr Lebiedowicz (Institute of Nuclear Physics PAS)

6/26/26, 5:20 PM

Heavy Flavour (production, spectroscopy)

Invited parallel

We discuss the production of $D \bar{D}$ pairs in $e^+ e^-$ collisions,
where $D$ refers to either $D^0$ or $D^+$ [1].
The continuum mechanism with the $t/u$-channel vector-meson $D^*$
exchanges are considered. The results of the calculation depend
on the parameter of the off-shell form-factor for the virtual $D^*$
mesons. The $D^* D \gamma$ coupling constants are found from
the $D^*...

49. Investigation of the $D\pi$ spectrum from a neural-network tuned heavy-quark action

David Thoma (Technical University of Darmstadt)

6/26/26, 5:45 PM

Heavy Flavour (production, spectroscopy)

Parallel

We present the spectrum of the $D\pi$ meson-meson scattering system on the 2+1-flavor lattice ensembles X451 and N451 produced by the CLS consortium with pion masses of approximately 287 MeV. The spectrum was produced for center-of-mass momenta up to $P^2=4$. The employed heavy-quark action was tuned non-perturbatively using a neural network and continuum charmonium ground-state masses. Meson...

74. Revealing the puzzle of the two $D_0^*$ resonances and their connections with the flavor multiplets from analysis of Lattice QCD

Zejian Zhuang (University of Valencia)

6/26/26, 6:05 PM

Heavy Flavour (production, spectroscopy)

Parallel

One or two $D_0^*$ resonances with strangeness $S=0$, isospin $I=1/2$ dynamically generated in pseudo-scalar meson octet and heavy mesons scattering are still a puzzle. In this talk, I will present that there are two $D_0^*$ resonances generated by ChPT up to NLO. The LECs of the interaction are constrained by the energy levels simulated by LQCD in $(S,I)=(0,1/2)$, $(1,0)$, $(-1,0)$, and...