Speaker
Emmanuel Ortiz Pacheco
(Jozef Stefan Institute)
Description
We perform a lattice simulation to investigate the doubly charm tetraquark $T^+_{cc}$ observed by the LHCb collaboration with flavor content $cc\bar{u}\bar{d}$, isospin-$0$, and only $0.4$ MeV below the $D^{*+}D^0$ threshold. We implement two-meson interpolators, and additionally also diquark-antidiquark interpolators. This is the first extraction of the scattering amplitude from correlators based on both types of operators. The simulation is performed on $N_f=2+1$ CLS ensembles in the lattice spacing with $m_\pi \simeq 280$ MeV and $a \simeq 0.086$ fm. The main aim of this work is to determine the impact of the diquark-antidiquark operators on the eigenenergies and the scattering amplitude.
| Topical area | Hadronic and Nuclear Spectrum and Interactions |
|---|
Primary authors
Emmanuel Ortiz Pacheco
(Jozef Stefan Institute)
Sara Collins
(University of Regensburg)
Luka Leskovec
(Jozef Stefan Institute )
M Padmanath
(The Institute of Mathematical Sciences Chennai)
Sasa Prelovsek
(University of Ljubljana )