25th International Workshop on Deep Inelastic Scattering and Related Topics

Measurement of CP violation in $D^{+} \to \pi^{+}\pi^{0}$ decays at BABAR

Not scheduled

20m

School of Physics and Astronomy (University of Birmingham)

WG5) Physics with Heavy Flavours WG5 Physics with Heavy Flavours

Description

The status of CP violations in charm sector is still unsettled. According to SM, the predicted asymmetries are small, but often affected by large uncertainties due to long-distance effects. However, it is possible to build observables which SM predicts to be CP-conserving, so that any measured asymmetry is undoubtedly a sign of New Physics.  We present the analysis of CP-asymmetries of singly Cabibbo-suppressed decays $D^{+} \to \pi^{+} \pi^{0}$, using the final dataset collected by BABAR. We discuss the sensitivity to CP-violating phases, and the correspondent New Physics constraints.