Apr 26 – 30, 2021
Europe/Zurich timezone

LHCb: Search for CP violation in D0->KS0KS0 decays

Apr 28, 2021, 6:10 PM


Giulia Tuci (Universita & INFN Pisa (IT))


CP violation in the charm system has been observed for the first time by LHCb in 2019. Up to now, the effect has only be seen in a single observable, the Delta-ACP between D0->KK/pipi. Further measurements are therefore important for a better understanding of the physics picture in this novel field, and whether it is purely Standard-Model or not. Among the possible decay channels, the D0→KSKS one is very promising for a second observation, having the potential for a CP asymmetry of up to ~1% in the SM. This channel is much more difficult to pursue at LHCb than its charged analogues, but thanks to recent improvement in the analysis, a measurement of its CP asymmetry on the Run-2 sample has just been completed, that is more precise than all previous measurements combined. We present the current result and the prospects for future LHCb runs.

Primary authors

Giulia Tuci (Universita & INFN Pisa (IT)) Stefania Ricciardi (Science and Technology Facilities Council STFC (GB))

Presentation materials