arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1609.05628nucl-th
收藏

$π^0$ -介子在核子和氘核上的光生

Photoproduction of $π^0$-Mesons on the Nucleon and Deuteron

Eed M. Darwish, A. Hemmdan, N. T. El-Shamy

摘要:

本文研究了光子能量在1.5GeV以下的核子和氘核光生$π^0$ -介子。利用MAID-2007模型计算了考虑再散射效应的半排他反应$γd\rightarrowπ^0X$($X=np+d$)的非极化和螺旋度依赖的总截面.我们发现,再散射效应产生相当大的贡献。提取的结果与现有的实验数据进行了比较,并获得了令人满意的协议。此外,$γd\rightarrowπ^0X$($X=np+d$)的贡献有限的GDH积分已被评估的显式积分高达1.5 GeV和总价值为256.96 $μ$ b已获得。得到了GDH积分的收敛性。

英文摘要:

The photoproduction of $π^0$-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 $γd\rightarrowπ^0X$ ($X=np+d$) 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 $γd\rightarrowπ^0X$ ($X=np+d$) to the finite GDH integral has been evaluated by explicit integration up to 1.5 GeV and a total value of 256.96 $μ$b has been obtained. Convergence of the GDH integral has been reached.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑