M. Bazzi, G. Beer, L. Bombelli, A. M. Bragadireanu, M. Cargnelli, G. Corradi, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, B. Girolami, C. Guaraldo… 展开作者
M. Bazzi, G. Beer, L. Bombelli, A. M. Bragadireanu, M. Cargnelli, G. Corradi, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, B. Girolami, C. Guaraldo, R. S. Hayano, M. Iliescu, T. Ishiwatari, M. Iwasaki, P. Kienle, P. Levi Sandri, A. Longoni, V. Lucherini, J. Marton, S. Okada, D. Pietreanu, T. Ponta, A. Rizzo, A. Romero Vidal, A. Scordo, H. Shi, D. L. Sirghi, F. Sirghi, H. Tatsuno, A. Tudorache, V. Tudorache, O. Vazquez Doce, E. Widmann, J. Zmeskal
The $\bar{K}N$ system at threshold is a sensitive testing ground for low energy QCD, especially for the explicit chiral symmetry breaking. Therefore, we have measured the $K$-series x rays of kaonic hydrogen atoms at the DA$Φ$NE electron-positron collider of Laboratori Nazionali di Frascati, and have determined the most precise values of the strong-interaction energy-level shift and width of the $1s$ atomic state. As x-ray detectors, we used large-area silicon drift detectors having excellent energy and timing resolution, which were developed especially for the SIDDHARTA experiment. The shift and width were determined to be $ε_{1s} = -283 \pm 36 \pm 6 {(syst)}$ eV and $Γ_{1s} = 541 \pm 89 {(stat)} \pm 22 {(syst)}$ eV, respectively. The new values will provide vital constraints on the theoretical description of the low-energy $\bar{K}N$ interaction.
High-precision measurement of the kaonic hydrogen 1s level shift and width with SIDDHARTA-2
Laboratori Nazionali di Frascati INFN（意大利国家核物理实验室）；Università degli studi di Roma Tor Vergata（罗马托尔维加塔大学）；Centro Ricerche Enrico Fermi - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi"（恩里科·费米研究中心 - 物理学历史博物馆与恩里科·费米学习与研究中心）；Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH)（霍里亚·胡利贝伊核物理与核工程国家研究所）；Stefan（斯特凡）
First measurement of kaonic deuterium X-ray transitions
INFN Laboratori Nazionali di Frascati（意大利国家核物理研究所弗拉斯卡蒂国家实验室）；Università degli studi di Roma Tor Vergata, Dipartimento di Fisica（罗马托尔维加塔大学物理系）；Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH)（霍里亚·胡利贝伊核物理与核工程国家研究所）；Centro Ricerche Enrico Fermi - Museo Storico della Fisica e Centro Studi e Ricerche ”Enrico Fermi”（恩里科·费米研究中心-物理学史博物馆与研究与教育中心）；Stefan Meyer Institute for Subatomic Physics（斯特凡·梅耶亚原子物理学研究所）；Department of Physics and Chemistry (DiFC)—Emilio Segrè, University of Palermo（巴勒莫大学埃米利奥·塞格雷物理与化学系）
