arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.1306nucl-thnucl-ex
收藏

低能质子-~ 3 He弹性散射和“A_y之谜”

Proton-3He elastic scattering at low energies and the "A_y Puzzle"

M. Viviani, L. Girlanda, A. Kievsky, L. E. Marcucci, S. Rosati

摘要:

应用Kohn变分原理和超球谐方法研究了低能p-3 He弹性散射。使用几种相互作用模型获得的初步结果报告。计算结果进行了比较,最近在三角大学核实验室进行的相移分析和现有的实验数据。用手征微扰理论导出的N_2LO处的三核子相互作用,我们发现A_y观测值的差异明显减小。

英文摘要:

The Kohn variational principle and the hyperspherical harmonic technique are applied to study p-3He elastic scattering at low energies. Preliminary results obtained using several interaction models are reported. The calculations are compared to a recent phase shift analysis performed at the Triangle University Nuclear Laboratory and to the available experimental data. Using a three-nucleon interaction derived from chiral perturbation theory at N2LO, we have found a noticeable reduction of the discrepancy observed for the A_y observable.

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。

↑