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Sep 5 – 9, 2022
online
US/Eastern timezone
Thank you to all the participants for a great QNP2022!

Doubly charm tetraquark from lattice QCD

Sep 6, 2022, 3:25 PM
25m
online

online

FSU, Tallahassee, FL, USA

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)

Presentation materials