Observation of Three Resonant Structures in the Cross Section of e^{+}e^{-}→π^{+}π^{-}h_{c}.

Using e^{+}e^{-} collision data collected with the BESIII detector operating at the Beijing electron positron collider, the cross section of e^{+}e^{-}→π^{+}π^{-}h_{c} is measured at 59 points with center-of-mass energy sqrt[s] ranging from 4.009 to 4.950 GeV with a total integrated luminosity of 22.

Precision Measurement of the Branching Fraction of D^{+}→μ^{+}ν_{μ}.

Using 20.3  fb^{-1} of e^{+}e^{-} collision data collected at a center-of-mass energy of E_{c.m.

Search for P_{cc[over ¯]s}(4459)^{0} and P_{cc[over ¯]s}(4338)^{0} in ϒ(1S,2S) Inclusive Decays at Belle.

Using data samples of 102 million ϒ(1S) events and 158 million ϒ(2S) events collected by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider, we search for [udscc[over ¯]] pentaquark states decaying to J/ψΛ. Using the first observations of ϒ(1S,2S) inclusive decays to J/ψΛ, we find evidence of the P_{cc[over ¯]s}(4459)^{0} state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties.

Search for Lepton-Flavor-Violating Decay Modes B^{0}→K_{S}^{0}τ^{±}ℓ^{∓} with Hadronic B Tagging at Belle and Belle II.

We present the first search for the lepton-flavor-violating decay modes B^{0}→K_{S}^{0}τ^{±}ℓ^{∓} (ℓ=μ,e) using the 711 and 365  fb^{-1} data samples recorded by the Belle and Belle II detectors, respectively. We use a hadronic B-tagging technique to fully reconstruct a B meson and search for signal decays in the system recoiling against the tagged meson, considering τ decays to either light leptons, one charged hadron, or one charged hadron and a neutral pion. We find no evidence for B^{0}→K_{S}^{0}τ^{±}ℓ^{∓} decays and set 90% confidence level upper limits on the branching fractions in the range of [0.

Observation of Charmonium h_{c} Radiative Decays to Multiple Light Hadrons and the Tensor State f_{2}(1270).

Using ψ(3686)→π^{0}h_{c} decays from a data sample of (27.12±0.14)×10^{8}  ψ(3686) events collected by the BESIII detector at the BEPCII collider, h_{c} radiative decays to multiple light hadrons below 2.