arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0802.3766hep-phphysics.acc-ph
收藏

非相对论性$ep$散射中的偏振效应

Polarization effects in non-relativistic $ep$ scattering

A. I. Milstein, S. G. Salnikov, V. M. Strakhovenko

摘要:

解析计算了质子(反质子)与极化非相对论电子或正电子相互作用的自旋翻转跃迁的截面。在引力的情况下,这个截面与玻恩近似的结果相比,在足够小的相对速度下大大增强。然而,它仍然是非常小的,使得光束偏振时间变得非常大的$e^{\pm}$光束的参数现在。这实际上排除了使用这种束流来储存反质子或质子的可能性。

英文摘要:

The cross section which addresses the spin-flip transitions of a proton (antiproton) interacting with a polarized non-relativistic electron or positron is calculated analytically. In the case of attraction, this cross section is greatly enhanced for sufficiently small relative velocities as compared to the result obtained in the Born approximation. However, it is still very small, so that the beam polarization time turns out to be enormously large for the parameters of $e^{\pm}$ beams available now. This practically rules out a use of such beams to polarize stored antiprotons or protons.

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。

↑