Speaker
Description
A great step has been made recently in the field of CP violation in the charm sector, with the first observation of CP asymmetry by the LHCb collaboration (arXiv:1508.03054). A complementary approach to studying decay-rate asymmetries is investigating time-odd triple-product observables, which have the opposite dependence on the strong phase difference and thus complementary sensitivity to CP violation. We present an ongoing study using a novel triple-product asymmetry approach proposed by Durieux and Grossman (PRD92.076013) that uses angular-momentum dependent observables through natural spherical harmonics and angles between daughter particles. The study is performed on decays $D^0 \to K^+ K^- \pi^+ \pi^-$ and $D^0 \to \pi^+ \pi^- \pi^+ \pi^-$, with data collected by the LHCb experiment in Run2.
