MEASUREMENT OF π0π+/- PHOTOPRODUCTION OFF THE DEUTERON AND DEUTERATED-BUTANOL TARGETS

被引：1
|
作者：
Ghosal, Debdeep [1 ]
机构：
[1] Univ Basel, CH-4056 Basel, Switzerland
来源：
ACTA PHYSICA POLONICA B | 2020年 / 51卷 / 01期
关键词：
D O I：
10.5506/APhysPolB.51.245
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Recent experiments using the Crystal Ball/TAPS setup at the MAMI accelerator in Mainz, Germany continue to study the properties and the excitation spectrum of the nucleon with meson photoproduction. Electromagnetic excitations of the proton and neutron are essential for understanding their isospin decomposition. The electromagnetic coupling of photons to protons is different than that of neutrons in certain states. Cross-section data alone is not sufficient for separating resonances, whereas polarization observables play a crucial role being essential in disentangling the contributing resonant and non-resonant amplitudes. Preliminary results of the polarization observable E of double pi production measured with a polarized solid deuterated-butanol target are shown with comparison to predictions of recent analyses.
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收藏
页码：245 / 250
页数：6
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