Speakers
Description
We report some of the most recent results in studying different aspects of QCD with about 500 fb$^-1$ of data collected by the BaBar experiment at the e+e- $B$-factory PEP-II.
In particular, we present Dalitz plot analyses of the hadronic three-body $J/\psi$ decays to $\pi^+\pi^-\pi^0$, $K^+K^-\pi^0$, and $K_S K^{\pm}\pi^{\mp}$ using an isobar model and a Veneziano model. We then show the results of a search for the $B$-meson decay to four baryons $B \to p \bar{p} p \bar{p}$, which might help shedding some light on the mechanism of hadron fragmentation into baryons, and on the experimental difference between the inclusive branching fraction of $B$-meson decay to baryons and the sum of the exclusive baryonic $B$ decays. We also present a high precision measurement of the mass difference between the $D^*(2010)^+$ and $D^+$ mesons using the decay chain $D^*(2010)^+ \to D^+ \pi^0$, with $D^+ \to K^- \pi^+ \pi^+$ , which largely improve the knowledge of this parameter.
| Experimental Collaboration | BABAR |
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