An innovative Cylindrical Gas Electron Multiplier (CGEM) detector is under construction for the upgrade of the inner tracker of the BESIII experiment. A novel system has been worked out for
Determination of the $\Lambda_c^+$ spin via the reaction $e^+e^-\to\Lambda_c^+\bar\Lambda_c^-$. (arXiv:2011.00396v1 [hep-ex])
We report on a comparison of two possible $\Lambda_c^+$ spin hypotheses, $J=\frac{1}{2}$ and $\frac{3}{2}$, via the process $e^+e^-\to\Lambda_c^+\bar\Lambda_c^-$, using the angular distributions of $\Lambda_c^+$ decays into $pK_S^0$, $\Lambda\pi^+$, $\Sigma^0\pi^+$, and
Observation of a resonant structure in $e^{+}e^{-} \to \omega\eta$ and another in $e^{+}e^{-} \to \omega\pi^{0}$ at center-of-mass energies between 2.00 and 3.08 GeV. (arXiv:2009.08099v2 [hep-ex] UPDATED)
Born cross sections for the processes $e^+e^- \to \omega\eta$ and $e^+e^- \to \omega\pi^{0}$ have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the
Measurements of $e^+e^-\rightarrow \eta_{\rm c}\pi^+ \pi^-\pi^0$, $\eta_{\rm c}\pi^+ \pi^-$ and $\eta_{\rm c}\pi^0\gamma$ at $\sqrt{s}$ from 4.18 to 4.60 GeV, and search for a $Z_{\rm c}$ state close to the $D\bar{D}$ threshold at 4.23 GeV decaying to $\eta_{\rm c}\pi$. (arXiv:2010.14415v1 [hep-ex])
We study $\eta_{\rm c}$ production at center-of-mass energies $\sqrt{s}$ from 4.18 to 4.60 GeV in $e^+e^-$ annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding
Search for New Hadronic Decays of $h_c$ and Observation of $h_c\rightarrow K^{+}K^{-}\pi^{+}\pi^{-}\pi^{0}$. (arXiv:2010.12092v1 [hep-ex])
Ten hadronic final states of the $h_c$ decays are investigated via the process $\psi(3686)\rightarrow \pi^0 h_c$, using a data sample of $(448.1 \pm 2.9) \times 10^6$ $\psi(3686)$ events collected with
Search for Axion-Like Particles produced in $e^+e^-$ collisions at Belle II. (arXiv:2007.13071v3 [hep-ex] UPDATED)
We present a search for the direct production of a light pseudoscalar $a$ decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the
Measurement of cross-section for $e^+e^-\to\Xi^-\bar{\Xi}^+$ near threshold at BESIII. (arXiv:2010.08320v1 [hep-ex])
The Born cross-sections and effective form factors for process $e^+e^-\to\Xi^-\bar{\Xi}^+$ are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total integrated luminosity of 363.9 pb$^{-1}$ $e^+e^-$
Measurement of the absolute branching fraction of the inclusive decay $\Lambda_c^+ \to K_S^0X$. (arXiv:2005.11211v2 [hep-ex] UPDATED)
We report the first measurement of the absolute branching fraction of the inclusive decay $\Lambda_c^+ \to K_S^0X$. The analysis is performed using an $e^+e^-$ collision data sample corresponding to an
Observation of the Doubly Cabibbo-Suppressed Decay $D^+\to K^+\pi^+\pi^-\pi^0$ and Evidence for $D^+\to K^+\omega$. (arXiv:2007.07674v2 [hep-ex] UPDATED)
Using $2.93 \rm fb^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, the first observation of the doubly Cabibbo-suppressed decay $D^+\to K^+\pi^+\pi^-\pi^0$
Study of BESIII Trigger Efficiencies with the 2018 $J/\psi$ Data. (arXiv:2009.11566v1 [hep-ex])
Using a dedicated data sample taken in 2018 on the $J/\psi$ peak, we perform a detailed study of the trigger efficiencies of the BESIII detector. The efficiencies are determined from
