基于中性π介子光生新极化数据的能量无关多极分析得到的N(1520) 3/2(-)螺旋度振幅。
N(1520) 3/2(-) helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions.
作者信息
Hartmann J, Dutz H, Anisovich A V, Bayadilov D, Beck R, Becker M, Beloglazov Y, Berlin A, Bichow M, Böse S, Brinkmann K-Th, Crede V, Dieterle M, Eberhardt H, Elsner D, Fornet-Ponse K, Friedrich St, Frommberger F, Funke Ch, Gottschall M, Gridnev A, Grüner M, Gutz E, Hammann Ch, Hannappel J, Hannen V, Herick J, Hillert W, Hoffmeister Ph, Honisch Ch, Jahn O, Jude T, Käser A, Kaiser D, Kalinowsky H, Kalischewski F, Klassen P, Keshelashvili I, Klein F, Klempt E, Koop K, Krusche B, Kube M, Lang M, Lopatin I, Makonyi K, Messi F, Metag V, Meyer W, Müller J, Nanova M, Nikonov V, Novinski D, Novotny R, Piontek D, Rosenbaum C, Roth B, Reicherz G, Rostomyan T, Sarantsev A, Schmidt Ch, Schmieden H, Schmitz R, Seifen T, Sokhoyan V, Thämer Ph, Thiel A, Thoma U, Urban M, van Pee H, Walther D, Wendel Ch, Wiedner U, Wilson A, Winnebeck A, Witthauer L, Wunderlich Y
机构信息
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany.
Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany.
出版信息
Phys Rev Lett. 2014 Aug 8;113(6):062001. doi: 10.1103/PhysRevLett.113.062001. Epub 2014 Aug 4.
New data on the polarization observables T, P, and H for the reaction γp→pπ(0) are reported. The results are extracted from azimuthal asymmetries when a transversely polarized butanol target and a linearly polarized photon beam are used. The data were taken at the Bonn electron stretcher accelerator ELSA using the CBELSA/TAPS detector. These and earlier data are used to perform a truncated energy-independent partial wave analysis in sliced-energy bins. This energy-independent analysis is compared to the results from energy-dependent partial wave analyses.
报道了关于反应γp→pπ(0)的极化可观测量T、P和H的新数据。当使用横向极化的丁醇靶和线偏振光子束时，结果是从方位角不对称性中提取的。数据是在波恩电子拉伸加速器ELSA上使用CBELSA/TAPS探测器获取的。这些数据和早期数据被用于在切片能量区间进行截断的与能量无关的分波分析。将这种与能量无关的分析与能量相关的分波分析结果进行了比较。
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