反应螺旋度不对称性的测量：CBELSA/TAPS合作组。
Measurement of the helicity asymmetry for the reaction : The CBELSA/TAPS Collaboration.
作者信息
Gottschall M, Afzal F, Anisovich A V, Bayadilov D, Beck R, Bichow M, Brinkmann K Th, Crede V, Dieterle M, Dietz F, Dutz H, Eberhardt H, Elsner D, Ewald R, Fornet-Ponse K, Friedrich St, Frommberger F, Gridnev A, Grüner M, Gutz E, Hammann Ch, Hannappel J, Hartmann J, Hillert W, Hoffmeister Ph, Honisch Ch, Jude T, Kammer S, Kalinowsky H, Keshelashvili I, Klassen P, Klein F, Klempt E, Koop K, Krusche B, Kube M, Lang M, Lopatin I, Mahlberg P, Makonyi K, Metag V, Meyer W, Müller J, Müllers J, Nanova M, Nikonov V, Novotny R, Piontek D, Reicherz G, Rostomyan T, Sarantsev A, Schmidt Ch, Schmieden H, Seifen T, Sokhoyan V, Spieker K, Thiel A, Thoma U, Urban M, Pee H van, Walther D, Wendel Ch, Werthmüller D, Wiedner U, Wilson A, Winnebeck A, Witthauer L, Wunderlich Y
机构信息
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Bonn, Germany.
Petersburg Nuclear Physics Institute, Gatchina, Russia.
出版信息
Eur Phys J A Hadron Nucl. 2021;57(1):40. doi: 10.1140/epja/s10050-020-00334-2. Epub 2021 Jan 28.
A measurement of the double-polarization observable for the reaction is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn using the Bonn frozen-spin butanol (C H OH) target, which provided longitudinally-polarized protons. Circularly-polarized photons were produced via bremsstrahlung of longitudinally-polarized electrons. The data cover the photon energy range from to 2310 MeV and nearly the complete angular range. The results are compared to and have been included in recent partial wave analyses.
报道了对该反应双极化可观测量的测量。数据是在波恩的ELSA设施上使用CBELSA/TAPS实验，采用波恩冻结自旋丁醇（C₄H₉OH）靶获取的，该靶提供纵向极化质子。圆极化光子通过纵向极化电子的轫致辐射产生。数据覆盖光子能量范围从……到2310 MeV以及几乎整个角度范围。结果与最近的分波分析进行了比较并已纳入其中。 （注：原文中“from to”之间缺少具体数值）
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