Photocouplings at the pole from pion photoproduction

被引：70

作者：

Roenchen, D. ^{[1
,2
]}

Doering, M. ^{[3
,4
,5
,6
]}

Huang, F. ^{[7
,8
]}

Haberzettl, H. ^{[5
,6
]}

Haidenbauer, J. ^{[1
,2
,9
]}

Hanhart, C. ^{[1
,2
,9
]}

Krewald, S. ^{[1
,2
,9
]}

Meissner, U-G ^{[1
,2
,3
,4
,9
]}

Nakayama, K. ^{[1
,2
,8
]}

机构：

[1] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

[2] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

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

[4] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[5] George Washington Univ, Inst Nucl Studies, Washington, DC 20052 USA

[6] George Washington Univ, Dept Phys, Washington, DC 20052 USA

[7] Univ Chinese Acad Sci, Sch Phys, Beijing 101408, Peoples R China

[8] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA

[9] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2014年 / 50卷 / 06期

关键词：

RECOIL-PROTON POLARIZATION; CHIRAL PERTURBATION-THEORY; REACTION GAMMA-P; NUCLEON SCATTERING LENGTHS; QUARK MASS DEPENDENCE; PARTIAL-WAVE ANALYSIS; 2ND RESONANCE REGION; SIGMA-BEAM ASYMMETRY; K-MATRIX APPROACH; ENERGY-RANGE;

D O I：

10.1140/epja/i2014-14101-3

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The reactions gamma p -> pi(0)p and gamma p -> pi(+)n are analyzed in a semi-phenomenological approach up to E similar to 2.3 GeV. Fits to differential cross section and single- and double-polarization observables are performed. A good overall reproduction of the available photoproduction data is achieved. The Julich2012 dynamical coupled-channel model -which describes elastic pi N scattering and the world data base of the reactions pi N -> eta N, K Lambda, and K Sigma at the same time- is employed as the hadronic interaction in the final state. The framework guarantees analyticity and, thus, allows for a reliable extraction of resonance parameters in terms of poles and residues. In particular, the photocouplings at the pole can be extracted and are presented.

引用

页码：1 / 35

页数：35

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[1] Photocouplings at the pole from pion photoproduction
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K. Nakayama
The European Physical Journal A, 2014, 50
[2] Erratum to: Photocouplings at the pole from pion photoproduction
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