Photoproduction of neutral pions off protons
Photoproduction of neutral pions off protons
复制标题
质子中性介子的光产生
DOI：
10.1103/physrevc.84.055203
复制
发表时间：
2011
影响因子：
3.1
通讯作者：
C. Wendel
中科院分区：
文献类型：
--
作者：
V. Crede;N. Sparks;A. Wilson;A. Anisovich;J. Bacelar;R. Bantes;O. Bartholomy;D. Bayadilov;R. Beck;Y. Beloglazov;R. Castelijns;H. Dutz;D. Elsner;R. Ewald;F. Frommberger;C. Funke;R. Gregor;A. Gridnev;E. Gutz;W. Hillert;P. Hoffmeister;I. Jaegle;J. Junkersfeld;H. Kalinowsky;S. Kammer;F. Klein;F. Klein;E. Klempt;M. Kotulla;M. Kotulla;B. Krusche;H. Löhner;I. Lopatin;S. Lugert;D. Menze;T. Mertens;J. Messchendorp;V. Metag;M. Nanova;V. Nikonov;D. Novinski;R. Novotný;M. Ostrick;L. Pant;H. Pee;M. Pfeiffer;A. Roy;A. Sarantsev;S. Schadmand;C. Schmidt;H. Schmieden;B. Schoch;S. Shende;V. Sokhoyan;A. Suele;V. Sumachev;T. Szczepanek;U. Thoma;D. Trnka;R. Varma;D. Walther;C. Wendel
使用 CBELSA/TAPS 探测器在伽马 p -> p pi(0) 反应中研究了中性介子的光产生，光子能量在 0.85 至 2.50 GeV 之间。 pi(0) 介子在其主要中性衰变模式中被观察到：pi(0) -> gamma gamma。微分横截面首次覆盖最前面的区域，theta(c.m.) < 60 度。在波恩-加特契纳框架内对这些数据进行部分波分析，观察到高质量共振 G(17)(2190)、D(13)(2080) 和 D(15)(2070)。
Photoproduction of neutral pions has been studied with the CBELSA/TAPS detector in the reaction gamma p -> p pi(0) for photon energies between 0.85 and 2.50 GeV. The pi(0) mesons are observed in their dominant neutral decay mode: pi(0) -> gamma gamma. For the first time, the differential cross sections cover the very forward region, theta(c.m.) < 60 degrees. A partial-wave analysis of these data within the Bonn-Gatchina framework observes the high-mass resonances G(17)(2190), D(13)(2080), and D(15)(2070).