Measurements of charm hadrons at Belle and Belle II

11 Jun 2026, 14:30
20m
Scuola Normale Superiore, Aula Dini, Palazzo del Castelletto (Pisa)

Scuola Normale Superiore, Aula Dini, Palazzo del Castelletto

Pisa

Via del Castelletto, 11, 56126 Pisa PI

Speaker

Sanjeeda Bharati Das (Universita di Torino)

Description

The Belle and Belle II experiments have collected a $1.6~\mathrm{ab}^{-1}$ sample of $e^+e^-$ collision data at center-of-mass energies near the $\Upsilon(nS)$ resonances. These samples contain a large number of $e^+e^-\to c\bar{c}$ events that produce charmed mesons and baryons. We present new results including the observation of the radiative decay $D_s(2317)^+ \to D_s^* \gamma$, a search for the electroweak penguin decay $D^+\to \pi^+ e^+e^-$, and a partial-wave analysis of the decay $\Xi_c^+\to \Xi^-\pi^+\pi^+$. Direct $C\!P$ violation is searched for in $D^0\to \pi^+\pi^-\pi^0$ decays and $D^+\to \pi^+\pi^0$ decays. We also present results on $C\!P$ violation in the charm baryon decays $\Xi^+_c\to \Sigma^+h^+ h^-$ and $\Lambda_c^+\to ph^+ h^-$.

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Author

Sanjeeda Bharati Das (Universita di Torino)

Co-author

Steven Robertson (University of Alberta)

Presentation materials