Speaker
Dr
Arafat Gabareen Mokhtar
(SLAC National Accelerator Laboratory)
Description
Several charmonium-like states above $D\bar{D}$ threshold have been
discovered at the Belle and BABAR B-factories. Some are produced via
Initial State Radiation ({\it e.g.} $Y(4260)$ and $Y(4350)$) and some
are observed in $B$ meson decays ({\it{e.g.}} $X(3872)$,
$Y(3940)$. The Belle observations of the $Z(4430)^-$, $Z(4050)^-$, and $Z(4248)^-$ states have generated much interest, since these states must have minimum quark
content
($c\bar{c}d\bar{u}$), and hence would represent the unequivocal
manifestation of a four-quark meson state. I shall report BABAR
results on the $Y(4260)$, $Y(4350)$, $X(3872)$, $Y(3940)$, and describe
the \babar\ search for the Z(4430)^-.
Primary author
Dr
Arafat Gabareen Mokhtar
(SLAC National Accelerator Laboratory)
