Related papers: Light hyperon physics at the BESIII experiment
The standard model of particle physics is a well-tested theoretical framework, but there are still a number of issues that deserve further experimental and theoretical investigation. For quark physics, such questions include: the nature of…
The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) collected large data samples for electron-positron collisions with center-of-mass above 4 GeV. The analysis of these samples has resulted in a number of surprising…
Hyperon physics offers a distinctive laboratory for probing the intensity frontier and searching for physics beyond the Standard Model. This review summarizes recent results from the BESIII experiment, including pioneering studies of dark…
Non-leptonic two-body weak decays of baryons are an important tool to probe the combined charge-conjugation--parity symmetry (CP) violation. We explain why the decays of strange baryons provide complementary information to the decays of…
With the ability to run above 4~GeV, the BESIII experiment located in the Beijing Electron Positron Collider (BEPCII), has becoming a pioneer in searching and studying charmoniumlike states ($XYZ$ particles). In 2013, BESIII Collaboration…
The study of $CP$ violation in hyperon transitions has a long history. In the early 2000s the HyperCP experiment made a major effort to seek $CP$-odd signals in the decay sequence $\Xi^-\to\Lambda \pi^-$ and $\Lambda\to p\pi^-$, which…
The BESIII experiment at the Beijing tau-charm factory BEPCII recently has embarked on a series of form factor measurements with the goal to improve the hadronic vacuum polarization as well as the hadronic light-by-light contributions to…
We present physics opportunities and topics with the $s\bar{s}$ states (strangeonia) that can be studied with the BESIII detector operating at the BEPCII collider. Though the $\phi$ and $\eta/\eta^\prime$ states have long been established…
Results based on 106 M $\psi'$ events and about 226 M $J/\psi$ events acquired with the BESIII detector at BEPCII are reported, including a confirmation of the BESII $p\bar{p}$ threshold enhancement in $J/\psi \to \gamma p\bar{p}$,…
The BESIII experiment at BEPCII at IHEP in Beijing/China has collected the world largest data sets in the $\tau$-charm region and it is well suited to cover a rich hadron physics programme, including charmonium and open-charm spectroscopy,…
The prevalence of matter over antimatter in the observable universe remains one of the most profound puzzles in modern physics, necessitating sources of charge-parity (CP) symmetry violation beyond those incorporated in the Standard Model.…
We propose to test $P$- and $CP$-symmetries with the process $e^+e^- \to J/\psi \to \Lambda\bar \Lambda$. The general form of the angular distribution of the process is derived and several observables for the proposed test are introduced.…
In 2009, the BESIII experiment has collected about 225M $\jpsi$ and 106M $\psip$ samples, both of which are the world largest on-peak charmonium production. Based on these dataset, BESIII has made great effort on the study of the charmonium…
Beijing Spectrometer (BES) at Beijing Electron Positron Collider (BEPC), IHEP has accumulated 2.5 $\times 10^7$ J/$\Psi$ and plans to increase the number to $10^8 \sim 10^9$ in the near future. In this paper I review and summarize the…
Using a sample of $1.06\times10^8$ $\psi^\prime$ mesons collected with the BESIII detector at the BEPCII $e^+e^-$ collider and $\chi_{cJ}$ mesons produced via radiative transitions from the $\psi^\prime$, we report the first observation for…
Despite the successes of the standard model, the non-perturbative dynamics of the strong interaction are not fully understood yet. Charmonium spectroscopy serves as an ideal tool to shed light on the dynamics of the strong interaction such…
The quantum entangled $J/\psi \to \Sigma^{+}\bar{\Sigma}^{-}$ pairs from $(1.0087\pm0.0044)\times10^{10}$ $J/\psi$ events taken by the BESIII detector are used to study the non-leptonic two-body weak decays $\Sigma^{+} \to n \pi^{+}$ and…
The electromagnetic form factors are fundamental observables that parametrise the electric and magnetic structure of hadrons and provide a key to the strong interaction. The Beijing Spectrometer (BESIII) is located at the Beijng Electron…
Using a sample of $(225.2\pm 2.8)\times 10^6$ $J/\psi$ events collected with the Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider, CP and $P$ violating decays of $\eta$, $\eta'$ and $\etac$ into $\pi^+\pi^-$ and…
Using $1.31\times10^9$ $J/\psi$ events collected by the BESIII detector at the Beijing Electron Positron Collider, we search for the process $J/\psi\to\Lambda_c^+e^-+c.c.$ for the first time. In this process, both baryon and lepton number…