Statut  Confirmé 
Série  IPNTHEO 
Domaines  nuclth 
Date  Mercredi 18 Juillet 2018 
Heure  11:30 
Institut  IPN 
Salle  Bâtiment 100, Salle A015 
Nom de l'orateur  Gongyo 
Prenom de l'orateur  Shinya 
Addresse email de l'orateur  
Institution de l'orateur  RIKEN 
Titre  Dibaryon candidates in decuplet baryons from lattice QCD 
Résumé  In recent years, there is a renewed interest in the dibaryons due to exclusive measurements in hadron reactions as well as the direct measurement in relativistic heavyion collisions. In this talk, we present the result of the first principle calculation using lattice QCD. Particularly we focus on the study for dibaryon candidates involving with the decuplet baryon: (i) the DeltaDelta system with the heavy pion mass, and (ii) the OmegaOmega system with the physical pion mass. Our result of the DeltaDelta interaction is that in the 7S3 channel, only an strongly attractive interaction (no repulsive core) appears, which leads to a bound state of twoDelta's, the socalled &quot;ABC effect&quot;, observed as a resonance of twonucleons in experiment by CELSIUS/WASA Collaboration. The result of the OmegaOmega interaction in the 1S0 channel at physical point shows a shallow bound state, which is similar to deuteron. 
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