Accès ouvert
2026
article
OpenAlex
Qiang Shao, Y. B. Liu, Rui-Sen Chen, Guan‐Long Huang et autres
In this letter, a novel 2-D 180° filtering coupler based on all-resonator structures is proposed. The 2-D 180° filtering coupler, composed of four 1-D 180° filtering couplers, achieves phase shifts in two dimensions with an inherent bandpass filter function. The comprehensive design …
cn, gb
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Y. B. Liu, Zi‐Long Feng, Yimin Lu, Ning Yang et autres
This paper presents a novel 4 × 4 Butler matrix that incorporates filtering characteristics. The proposed structure consists of 90° couplers, 180° filtering couplers, and phase shifters to achieve both phase modulation and second-order bandpass filtering response. A comprehensive design methodology for …
cn
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Mikhail N. Achasov, P. Adlarson, R. Aliberti, A. Amoroso et autres
A precision measurement of the matrix elements for $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ and $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ decays is performed using a sample of $(10087\ifmmode\pm\else\textpm\fi{}44)\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }J/\ensuremath{\psi}$ decays collected with the BESIII detector. The decay $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\eta}$ is used to select clean samples of $631,686\text{ }\text{ }\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ decays and …
cn, ru, se, de, it, pl, mn, us, tr, kr, gb
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
Mikhail N. Achasov, S. Ahmed, M. Albrecht, M. Alekseev et autres
We study the decays ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}\ensuremath{\eta}{\ensuremath{\pi}}^{+}$ and $\mathrm{\ensuremath{\Sigma}}(1385{)}^{+}\ensuremath{\eta}$ based on ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}{\overline{\mathrm{\ensuremath{\Lambda}}}}_{c}^{\ensuremath{-}}$ pairs produced in ${e}^{+}{e}^{\ensuremath{-}}$ collisions at a center-of-mass energy of $\sqrt{s}=4.6\text{ }\text{ }\mathrm{GeV}$, corresponding to an integrated luminosity of $567\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$. The data sample was accumulated with the BESIII detector at …
cn, ru, de, it, mn, us, tr, nl
(code pays fourni par la source)