arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.08640hep-ph
收藏

正向$pA$碰撞中的单自旋不对称性

Single Spin Asymmetry in Forward $pA$ Collisions

Yoshitaka Hatta, Bo-Wen Xiao, Shinsuke Yoshida, Feng Yuan

摘要:

我们计算了非极化核子/核中轻强子产生$p^\uparrow p\to hX$和$p^\uparrow A\to hX$中的横向单自旋不对称性。在向前(大- $x_F$)区域中,主要贡献来自与软胶子极相关的所谓衍生项。这导致了$A_N$中核效应的消除,这可以在RHIC中进行测试。我们还表明,软费米子极点消失在饱和环境中。

英文摘要:

We compute the transverse single spin asymmetry in light hadron production $p^\uparrow p\to hX$ and $p^\uparrow A\to hX$ including the gluon saturation effect in the unpolarized nucleon/nucleus. In the forward (large-$x_F$) region, the dominant contribution comes from the so-called derivative term associated with the soft gluonic pole. This leads to the cancellation of nuclear effects in $A_N$ which can be tested at RHIC. We also show that the soft fermionic pole disappears in the saturation environment.

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。

↑