The 13th International Workshop on e+e- collisions from Phi to Psi

Session

Session 3

18 Aug 2022, 19:30

Conveners

Session 3

• Xiaorong Zhou (University of Science and Technology of China)

Contribution list Timetable

19. Search for rare decays at BESIII

Zhengyun You (Sun Yat-Sen (Zhongshan) University)

18/08/2022, 19:30

The BESIII experiment has collected 2.6B $\psi(2S)$ events and 10B $J/\psi$ events. The huge data sample provide an excellent chance to search for rare processes in charmonium decays. In this talk, we report the recent search for $J/\psi \to \phi e^+e^-$, $D^-e^+\nu_e$. The big charmonium sample also produce millions of hyperons, which is used to study the weak decay of $\Sigma^- \to...

86. Search for rare baryonic decays of beauty hadrons at LHCb

Haoqiang Zhao (Hunan University)

18/08/2022, 19:55

The theoretical description of the dynamics behind baryonic decays of heavy flavoured particles is still very challenging. The branching ratio enhancement in multibody decays and the suppression of the branching fractions to two-body final states are interesting features of these processes. To better understand their underlying dynamics, more precise measurements are needed. In this...

90. Search for the process $e^+ e^- \to D^*(2007)$ with the CMD-3 detector

Dmitry Shemyakin (B)

18/08/2022, 20:20

A search for the process $e^{+}e^{-} \to D^{*0}(2007)$ has been performed with the CMD-3 detector at the VEPP-2000 $e^{+}e^{-}$-collider. Two main decay modes $D^{0}\pi^{0}$ and $D^{0}\gamma$ with $D^{0} \to K^{+}\pi^{-}\pi^{+}\pi^{-}$ and $D^{0} \to K^{+}\pi^{-}\pi^{0}$ are used in this analysis. Using an integrated luminosity of $25.5~ nb^{-1}$ collected at the center-of-mass energy...

83. Michel parameters in the presence of massive Dirac and Majorana neutrinos

Juan Marquez (C)

18/08/2022, 20:45

We analyse the effects of Dirac and Majorana neutrinos on leptonic lepton decays using the most general four-lepton effective interaction Hamiltonian of dimension six. We calculate the specific energy and angular distribution of the final charged lepton, complemented with the decaying and final charged lepton polarization. We discuss the new generalized Michel parameters and focus on the...