Seminar

Title: Tetra and pentaquarks in the constituent quark model

Speaker: Prof.Luciano Maiani (Universita’di Roma La Sapienza, and INFN, Roma1, Italy)

Time: 10:00am, Jun.23th，2016 (Thursday)

Place: Theoretical Physics Division，319

Abstract:

The discovery of two pentaquarks by LHCb have reinforced the case of “exotic” hadrons, which have diquarks and antidiquarks as basic units. The speaker will review (i) the theoretical basis for this concept, in particular recent developments in the 1/N expansio in large N QCD (ii) the implications for the existence of further states, in particular with baryon number equal to two (dibaryons) and (iii) the new data on [c cbar][s sbar] states.