Influence of final-state interaction on double spin asymmetries in incoherent π+-photoproduction on the deuteron near threshold

被引：1
|
作者：
Darwish, E. M. [1 ,2 ]
Al-Ghamdi, H. M. [3 ]
机构：
[1] Taibah Univ, Fac Sci, Phys Dept, Medina 41411, Saudi Arabia
[2] Sohag Univ, Fac Sci, Phys Dept, Sohag 82524, Egypt
[3] Princess Nourah Bint Abdulrahman Univ, Fac Sci, Phys Dept, POB 84428, Riyadh 11671, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2020年 / 29卷 / 08期
关键词：
Meson production; photoproduction reactions; polarization phenomena in reactions; final-state interactions; polarized beams; polarized targets; PION-PHOTOPRODUCTION; SCATTERING-LENGTH; SUM-RULE; POLARIZATION OBSERVABLES; REACTION GAMMA; COHERENT; MESON; PI(0)-PHOTOPRODUCTION; PARAMETRIZATION; NEUTRONS;
D O I：
10.1142/S0218301320500561
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：
Incoherent pi(+)-photoproduction on the deuteron is investigated for photon energies near threshold with particular focus on beam-target double spin asymmetries. The analysis is based on a gamma d -> pi(+)nn reaction model in which realistic elementary amplitudes for gamma N -> pi N, NN -> NN and pi N -> pi N are incorporated. Numerical results on all possible beam-target double spin asymmetries of the differential and total cross-sections in the photon energy region near threshold are presented. Effects of NN and pi N final state interactions are investigated and their roles are found to be important.
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页数：14
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