Conveners
Parallel II: A
- Hailong Ma (Institute of High Energy of Physics)
The BESIII experiment has collected 2.7 billion psi(3686) events, 10 billion J/psi events, 20 fb^-1 D meson pairs at 3.773 GeV, and 7.33 fb^-1 DsDs* events from 4.128 to 4.226 GeV. The huge data samples allow us to search for rare processes and new physics in charm hadron decays. In this talk, we report the search for FCNC decay in Ds+âh(h')e+e-, lepton number violation process...
The study of polarization in heavy-flavor meson decays into Vector-Vector （VV） states offers a unique opportunity to explore the non-perturbative aspects of Quantum Chromodynamics. While the B→VV puzzle has been extensively investigated, there remains a scarcity of data in the charm sector. This report aims to present a concise summary of the measurements related to D→VV decays as conducted by...
The violation of the charge-parity (CP) transformation symmetry, which although has been observed in plenty of pure meson decay processes, was only confirmed just very recently by the LHCb collaboration in the four-body decay of the heavy baryon $\Lambda_b^0$, $\Lambda_b^0\to p K^- \pi^+ \pi ^-$, through a comparison of the decay branching ratio with that of the CP-conjugate process. However,...
The decay of the D meson into multibody final states is a complex process that provides valuable insights into the fundamental interactions within the Standard Model of particle physics. This study focuses on the decay cascade $D^{+}\to K^{*}_{J} \ell^{+}\nu \to K^{\pm}\pi^{\mp} \ell^{+}\nu$ where the $K^*_J$ resonance encompasses the $K^*(892),K^{*}(1410),K^{*}_0(1430)$ states. We...
