Speaker
Prof.
Marek Karliner
(Tel Aviv University)
Description
discuss several highly accurate theoretical predictions for masses
of baryons containing the b quark which have been recently confirmed
by experimental data. I point out that proper treatment of the
color-magnetic hyperfine interaction in QCD is crucial for obtaining these
results. Several yet untested predictions are given for additional
properties of heavy baryons. The same approach applied to the X(3872)
meson suggests that it is a tetraquark and leads us to propose a novel
mechanism for the strong violation of isospin observed in its decays.
I also discuss the implications of the two charged exotic resonances
with quantum numbers of a (b bar u dbar) tetraquark, very recently reported by Belle in the channel [Upsilon(nS) pi+, n=1,2,3].
Primary author
Prof.
Marek Karliner
(Tel Aviv University)
