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SUMMARY:Doubly heavy tetraquark states in LQCD - Anthony Francis (CERN)
DTSTART:20200629T140000Z
DTEND:20200629T150000Z
UID:TALK149548@talks.cam.ac.uk
CONTACT:Bipasha Chakraborty
DESCRIPTION:Heavy flavour exotic hadrons\, and in particular tetraquarks\,
  continue to elude a theoretical understanding and their consistent explan
 ation is one of the most intriguing questions in hadron spectroscopy. It i
 s clear that their origin lies at the interaction scale of QCD and a compl
 ete picture requires calculations including the full breadth of QCD intera
 ctions. Such calculations can be provided\nusing lattice QCD. In this pres
 entation the progress and status in studying doubly heavy tetraquark state
 s using this technique is reviewed. After briefly discussing the methodolo
 gy and some phenomenological considerations I review the status of the ava
 ilable\nlattice studies in the flavour channel u dbar Qbar Q and also ment
 ion in passing further combinations. Our own efforts to study the ground s
 tate of these channels are highlighted alongside a study of their heavy qu
 ark mass dependence. The presented results suggest the binding energy foll
 ows the behaviour argued from phenomenology and confirms its predictions i
 n a regime where the heavy component is above or around charm quark mass. 
 Gathering and comparing recent results from the community where possible a
  consistent picture for these doubly heavy tetraquarks is emerging.
LOCATION:Virtual Seminar 
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