The polarization observables T, P, and H and their impact on γp → pπ0 multipoles

被引：27

作者：

Hartmann, J. ^{[1
]}

Dutz, H. ^{[2
]}

Anisovich, A. V. ^{[1
,3
]}

Bayadilov, D. ^{[1
,3
]}

Beck, R. ^{[1
]}

Becker, M. ^{[1
]}

Beloglazov, Y. ^{[3
]}

Berlin, A. ^{[4
]}

Bichow, M. ^{[4
]}

Boese, S. ^{[1
]}

Brinkmann, K. -Th. ^{[1
,5
]}

Crede, V. ^{[6
]}

Dieterle, M. ^{[7
]}

Eberhardt, H. ^{[2
]}

Elsner, D. ^{[2
]}

Fornet-Ponse, K. ^{[2
]}

Friedrich, St. ^{[5
]}

Frommberger, F. ^{[2
]}

Funke, Ch. ^{[1
]}

Gottschall, M. ^{[1
]}

Gridnev, A. ^{[3
]}

Gruener, M. ^{[1
]}

Goertz, St. ^{[2
]}

Gutz, E. ^{[1
,5
]}

Hammann, Ch. ^{[1
]}

Hannappel, J. ^{[2
]}

Hannen, V. ^{[5
]}

Herick, J. ^{[4
]}

Hillert, W. ^{[2
]}

Hoffmeister, Ph. ^{[1
]}

Honisch, Ch. ^{[1
]}

Jahn, O. ^{[2
]}

Jude, T. ^{[2
]}

Kaeser, A. ^{[7
]}

Kaiser, D. ^{[1
]}

Kalinowsky, H. ^{[1
]}

Kalischewski, F. ^{[1
]}

Klassen, R. ^{[1
]}

Keshelashvili, I. ^{[7
]}

Klein, F. ^{[2
]}

Klempt, E. ^{[1
]}

Koop, K. ^{[1
]}

Krusche, B. ^{[7
]}

Kube, M. ^{[1
]}

Lang, M. ^{[1
]}

Lopatin, I. ^{[3
]}

Makonyi, K. ^{[5
]}

Messi, F. ^{[2
]}

Metag, V. ^{[5
]}

Meyer, W. ^{[4
]}

机构：

[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[2] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[3] Petersburg Nucl Phys Inst, Gatchina 188300, Russia

[4] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[5] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany

[6] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[7] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

来源：

PHYSICS LETTERS B | 2015年 / 748卷

关键词：

Baryon spectroscopy; Meson photoproduction; Polarization observables; Multipoles; NEUTRAL PION-PHOTOPRODUCTION; STRANGE-PARTICLE PRODUCTION; TARGET ASYMMETRY; ENERGY-RANGE; PI(0) PHOTOPRODUCTION; RESONANCE REGION; SIGMA; PROTONS; ELSA; ETA;

D O I：

10.1016/j.physletb.2015.07.008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Data on the polarization observables T, P, and H for the reaction gamma p -> p pi(0) are reported. Compared to earlier data from other experiments, our data are more precise and extend the covered range in energy and angle substantially. The results were extracted from azimuthal asymmetries measured using a transversely polarized target and linearly polarized photons. The data were taken at the Bonn electron stretcher accelerator ELSA with the CBELSA/TAPS detector. Within the Bonn-Gatchina partial wave analysis, the new polarization data lead to a significant narrowing of the error band for the multipoles for neutral-pion photoproduction. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：212 / 220

页数：9

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