000002047 001__ 2047
000002047 005__ 20210314164614.0
000002047 037__ $$aBELLE2-NOTE-PL-2020-021
000002047 041__ $$aeng
000002047 100__ $$aThe Belle II Collaboration 
000002047 245__ $$aRediscovery of "wrong-sign" D0 decays to hadronic final states with early Belle II data
000002047 260__ $$a$$c2020-07-27
000002047 300__ $$a2
000002047 520__ $$aIn the standard model, mixing and CP violation in the charm sector are expected to be very small and thus they constitute a sensitive probe for potential new physics contributions. The "wrong-sign" decays D0->K+π−, K+π−π0, K+π−π+π− are among the best channels to study charm mixing, as they can be produced through two interfering processes: a direct doubly Cabibbo-suppressed decay of the D0 meson, or through D0-D0bar mixing followed by a Cabibbo-favored decay of the D0bar meson. This note reports the "rediscovery" of these three decays in the data collected by Belle II during 2019 and the first half of 2020, and corresponding to 37.8 fb−1 of integrated luminosity.
000002047 8560_ $$fchanchal.sharma@desy.de
000002047 8564_ $$uhttps://docs.belle2.org/record/2047/files/BELLE2_NOTE_PL_2020_021.pdf