Speaker
Description
The inclusive cross sections for di-hadrons of charged pions and kaons (e+e-→hhX), hyperons and charmed baryons in e+e- annihilation are reported. For di-hadrons of charged pions and kaons, the cross sections are obtained as a function of the total fractional energy and invariant mass for any di-hadron combination in the same hemisphere and di-hadron fragmentation functions are probed. For hyperons and charmed baryons, the direct production cross sections after subtracting the feed-down contributions from heavy particles are compared for the first time. We also report the first observation of transverse Λ/Λbar polarization in e+e- colliders. The analyses are based on a data set recorded by the Belle detector from e+ e- collisions produced by the KEKB collider.
