24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Searching for evidence of diquark states using lattice QCD simulations

25 Jul 2016, 15:55
Building B2a Room 2065 (Highfield Campus, University of Southampton)

Building B2a Room 2065

Highfield Campus, University of Southampton

Talk Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions


Mr Ryutaro Fukuda (University of Tokyo, RIKEN BNL Research Center)


In recent years, exotic hadrons called X, Y, Z which cannot be explained by the quark model have been found one after another. For example, the tetraquark state, which is one of the typical scenarios to interpret the exotic state, is based on the existence of a diquark state. The discovery of a pentaquark state at CERN in July last year also makes a diquark state even more important. It is well known that an attraction between two quarks can be enhanced in the color anti-triplet, flavor anti-symmetric, spin singlet, positive parity channel and this diquark is called good diquark. Our main subject is to check if a lattice QCD simulation with 2 flavor Wilson fermions actually supports this statement. For this objective, we calculate diquark mass diference between good diquark and other diquarks and also analyze density distribution of diquarks through calculation of density-density correlators.

Primary author

Mr Ryutaro Fukuda (University of Tokyo, RIKEN BNL Research Center)


Dr Philippe de Forcrand (ETH Zurich, CERN)

Presentation Materials

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