Speaker
Sasa Prelovsek
(University of Ljubljana)
Description
The LHCb collaboration recently discovered a doubly charmed tetraquark $T_{cc}$ with flavor $cc\bar u\bar d$ just below $DD^*$ threshold. This is the longest lived hadron with explicitly exotic quark content known to this date. We present the first lattice QCD study of $DD^*$ scattering in this channel, involving rigorous determination of pole singularities in the related scattering amplitudes. Working with a heavier than physical light quark mass, we find a signature for a shallow virtual bound state pole in the $DD^*$ scattering amplitude with $l=0$, which is likely related to $T_{cc}$. The dependence of this state on the quark masses is also discussed.
| speaker affiliation | University of Ljubljana |
|---|
Primary author
Sasa Prelovsek
(University of Ljubljana)
Co-author
Dr
M. Padmanath
(Mainz)
