Q. Wang

Engineering Bilayer Tandem Catalysts on Si‐Based Photocathodes for High‐performance CO 2 Reduction to Produce Methane

Hao Wu, Shenghe Si, Haitao Wang, Changlai Wang et autres

ABSTRACT Solar‐powered CO 2 reduction through photoelectrochemical (PEC) approaches to produce hydrocarbon fuels, such as methane (CH 4 ), is one of the most promising paths for supplying sustainable fuels. However, the limited light absorption capability and sluggish kinetics restrict the photocatalytic …

jp, cn (code pays fourni par la source)

Constraints on inelastic dark matter from the CDEX-1B experiment

Y. F. Liang, L. T. Yang, Qing Yue, K. Kang et autres

We present limits on spin-independent inelastic weakly interacting massive particles (WIMP)-nucleus scattering using the 737.1 kg$\cdot$day dataset from the CDEX-1B experiment. Expected nuclear recoil spectra for various inelastic WIMP masses $m_χ$ and mass splittings $δ$ are calculated under the standard halo model. …

Precision measurements of branching fractions for ψ′→π0J/ψ and ηJ/ψ

M. N. Achasov, O. Albayrak, D. Ambrose, F. F. An et autres

We present a precision study of the ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}J/\ensuremath{\psi}$ and $\ensuremath{\eta}J/\ensuremath{\psi}$ decay modes. The measurements are obtained using $106\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${\ensuremath{\psi}}^{\ensuremath{'}}$ events accumulated with the BESIII detector at the BEPCII ${e}^{+}{e}^{\ensuremath{-}}$ collider operating at a center-of-mass energy corresponding to the ${\ensuremath{\psi}}^{\ensuremath{'}}$ mass. We obtain …

cn, ru, us, de, it, nl, tr, pk (code pays fourni par la source)

Observation of χc1 Decays into Vector Meson Pairs ϕϕ , ωω , and ωϕ

M. N. Achasov, L. An, Q. An, Zhenghua An et autres

Using $(106\ifmmode\pm\else\textpm\fi{}4)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\psi}(3686)$ events accumulated with the BESIII detector at the BEPCII ${e}^{+}{e}^{\ensuremath{-}}$ collider, we present the first measurement of decays of ${\ensuremath{\chi}}_{c1}$ to vector meson pairs $\ensuremath{\phi}\ensuremath{\phi}$, $\ensuremath{\omega}\ensuremath{\omega}$, and $\ensuremath{\omega}\ensuremath{\phi}$. The branching fractions are measured to be $(4.4\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.5)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $(6.0\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.7)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, and $(2.2\ifmmode\pm\else\textpm\fi{}0.6\ifmmode\pm\else\textpm\fi{}0.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, …

cn, ru, it, de, nl, us, ua, pk, jp, hk (code pays fourni par la source)

Search for CP and P violating pseudoscalar decays into ππ

M. N. Achasov, Diego Alberto, Q. An, Zhenghua An et autres

Using a sample of $(225.2\ifmmode\pm\else\textpm\fi{}2.8)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $J/\ensuremath{\psi}$ events collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider, $CP$ and $P$ violating decays of $\ensuremath{\eta}$, ${\ensuremath{\eta}}^{\ensuremath{'}}$, and ${\ensuremath{\eta}}_{c}$ into ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ are searched for in $J/\ensuremath{\psi}$ radiative decays. No significant $\ensuremath{\eta}$, ${\ensuremath{\eta}}^{\ensuremath{'}}$, …

ru, jp, it, cn, de, nl, us, pk, hk (code pays fourni par la source)

Observation of χcJ decaying into the pp¯K+K− final state

M. N. Achasov, Diego Alberto, L. An, Q. An et autres

First measurements of the decays of the three ${\ensuremath{\chi}}_{cJ}$ states to $p\overline{p}{K}^{+}{K}^{\ensuremath{-}}$ final states are presented. Intermediate $\ensuremath{\phi}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}$ and $\ensuremath{\Lambda}(1520)\ensuremath{\rightarrow}p{K}^{\ensuremath{-}}$ resonance states are observed, and branching fractions for ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}\overline{p}{K}^{+}\ensuremath{\Lambda}(1520)$, $\ensuremath{\Lambda}(1520)\overline{\ensuremath{\Lambda}}(1520)$, and $\ensuremath{\phi}p\overline{p}$ are reported. We also measure branching fractions for direct ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}p\overline{p}{K}^{+}{K}^{\ensuremath{-}}$ …

us, ru, it, cn, ua, pk, jp, hk (code pays fourni par la source)

Evidence for ψ′ Decays into γπ0 and γη

M. N. Achasov, L. An, Q. An, Zhenghua An et autres

The decays ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\pi}}^{0}$, $\ensuremath{\gamma}\ensuremath{\eta}$ and $\ensuremath{\gamma}{\ensuremath{\eta}}^{\ensuremath{'}}$ are studied using data collected with the BESIII detector at the BEPCII ${e}^{+}{e}^{\ensuremath{-}}$ collider. The processes ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\pi}}^{0}$ and ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\eta}$ are observed for the first time with signal significances of $4.6\ensuremath{\sigma}$ and $4.3\ensuremath{\sigma}$, respectively. The branching fractions …

cn, no, ru, us, ua, it, pk, jp, de, hk (code pays fourni par la source)