Polarization observables in π0η photoproduction on the proton

被引：14
|
作者：
Fix, A. [1 ]
Arenhoevel, H. [1 ]
机构：
[1] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
来源：
PHYSICAL REVIEW C | 2011年 / 83卷 / 01期
关键词：
NUCLEON;
D O I：
10.1103/PhysRevC.83.015503
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：
For pi 0 eta photoproduction on the nucleon formal expressions are developed for the fivefold differential cross section and the recoil polarization including beam and target polarizations. The polarization observables are described by various beam, target, and beam-target asymmetries for polarized photons and/or polarized nucleons. They are given as bilinear Hermitian forms in the reaction matrix elements divided by the unpolarized cross section. Numerical results for the linear and circular beam asymmetries for gamma p -> pi(0)eta p are obtained within an isobar model and are compared with existing data. Predictions are also given for the target asymmetry T-11, and the beam-target asymmetries T-10(c) and T-11(c) for circularly polarized photons.
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页数：15
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