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

Session

Session 3

19 Aug 2022, 19:30

Conveners

Session 3

• Kai Zhu (高能所)

Contribution list Timetable

20. On masses of narrow $\Upsilon$ states

Andrey Shamov (Budkedr Instute of Nuclear Physics)

19/08/2022, 19:30

In view of a new experiment which is under preparation at VEPP-4M collider at Novosibirsk the results the mass measurements conducted about forty years ago were reanalyzed. The reanalysis includes, when required, radiative corrections, interference effects, use of modern electron's mass value and more accurate numerical calculations. The shift of $\Upsilon(2S)$ mass for some measurements reach...

27. Charm hadron lifetime measurements at Belle II

Angelo Di Canto (BNL)

19/08/2022, 19:55

Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm hadron lifetimes Recent results from measurements of $D^0$ meson, $D^+$ meson and $\Lambda_c$ baryon lifetimes are presented. The results are the most precise to date.

22. LFV within little Higgs models realizing a low-scale see-saw

Iván Pacheco (Cinvestav, Mexico)

19/08/2022, 20:20

Little Higgs models were proposed as an attractive way of reducing the little hierarchy problem. Their promising LFV phenomenology has been studied (mainly for the Littlest Higgs model with T-parity, LHT, and for the Simplest Little Higgs model, SLH) in the last decade by several groups worldwide. We have recently highlighted the changes with respect to this well-known pattern induced by the...

87. Singlet and non-singlet three-loop massive form factors

Kay Schoenwald (K)

19/08/2022, 20:45

I will present our recent calculation of the singlet and non-singlet contributions to the massive form factors at three-loop order. The calculation is based on our powerful method to compute one-scale master integrals using differential quations combined with numerical matching. The latter is achieved with the help of deep expansions around regular and singular kinematic points. The...

13. Light Meson Spectroscopy at BESIII

Linjian Li

BESIII has the world’s largest samples of $J/\psi$ and $\psi(3686)$ events from $e^+e^-$ annihilations, which offer an ideal and clean laboratory to study light meson spectroscopy , in particular for the search for QCD exotics. Recent important achievements in this field, including the observation of a $1^{-+}$ state, $\eta_1(1855)$ in $J/\psi \to \gamma \eta \eta^\prime$, the observation of...