Photoproduction of pi(0)-Mesons from the Nucleon and Deuteron

被引：2

作者：

Darwish, Eed Mohamed ^{[1
,2
]}

Hemmdan, Amel ^{[3
]}

El-Shamy, Nesreen T. ^{[1
,4
]}

机构：

[1] Taibah Univ, Dept Phys, Fac Sci, Madina 41477, Saudi Arabia

[2] Sohag Univ, Dept Phys, Fac Sci, Sohag 82524, Egypt

[3] Aswan Univ, Dept Phys, Fac Sci, Aswan 81528, Egypt

[4] Ain Shams Univ, Fac Girls, Dept Phys, Cairo 11566, Egypt

来源：

MAKARA JOURNAL OF SCIENCE | 2016年 / 20卷 / 02期

关键词：

few-body systems; meson production; photoproduction reactions; spin observables;

D O I：

10.7454/mss.v20i2.5948

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The photoproduction of pi(0)-mesons from the nucleon and deuteron has been studied for incidents of photon energies up to 1.5 GeV. By using the MAID-2007 model for the process on the nucleon, we predict results for the unpolarized and helicity-dependent total cross sections of the semi-exclusive reaction gamma d ->pi X-0 (X -> np+d) with the inclusion of rescattering effects. We find that rescattering effects yield a substantially large contribution. The extracted results are compared with the available experimental data and a satisfactory agreement is obtained. In addition, the contribution of gamma p ->pi X-0 (X = np+d) to the finite GDH integral has been evaluated by explicit integration up to 1.5 GeV and a total value of 256.96 mu b has been obtained. Convergence of the GDH integral has been reached.

引用

页码：55 / 60

页数：6

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