000003895 001__ 3895
000003895 005__ 20231002083026.0
000003895 037__ $$aBELLE2-CONF-PROC-2023-037
000003895 041__ $$aeng
000003895 100__ $$aRoberto Mussa
000003895 245__ $$aHeavy Quarkonia and Multiquarks at B-factories
000003895 260__ $$a$$c2023-09-30
000003895 300__ $$a8
000003895 500__ $$aMy talk was expanded to cover also most recent LHCb results due to the defection of their rapporteur. 
000003895 520__ $$aThis review will cover the most recent results from the B factories in the field of heavy quarkonia and multiquark systems. At Belle-II, the first data taking period beyond the $\Upsilon(4S)$ peak energy has been been devoted to the study of the region around $\sqrt{s}=10.75$ GeV, where enhanced transition rates to lower bottomonia suggested the existance of a new exotic bound state. In turn, LHCb keeps discovering new tetraquarks and pentaquarks at steady pace. Most of them are composed by at least one $c\bar{c}$ pair, but recently also systems with two $\ccbar$ pairs and tetraquarks with open double charm have been found.
000003895 6531_ $$aTetraquarks, Pentaquarks, Spectroscopy
000003895 8560_ $$froberto.mussa@to.infn.it
000003895 8564_ $$uhttps://docs.belle2.org/record/3895/files/BELLE2-CONF-PROC-2023-037.pdf