In 2015, the PHENIX collaboration has measured very forward ($\eta >6.8$) single spin asymmetries of inclusive neutrons in transversely polarized proton-proton and proton-nucleus collisions at a center of mass energy of 200 GeV. A previous publication from this dataset concentrated on the nuclear dependence of such asymmetries. In this measurement the explicit transverse momentum dependence of inclusive neutron single spin asymmetries for proton-proton collisions is extracted using a bootstrapping unfolding technique on the transverse momenta. This explicit transverse momentum dependence will help improve the understanding of the mechanisms that create these asymmetries.

中文翻译：

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横向极化p + p碰撞ats = 200GeV时与横向动量有关的向前中子单旋自旋不对称性

2015年，PHENIX的合作取得了很大的进步（$\eta >6.8$）在极化极化质子-质子和质子-核碰撞中以200 GeV为中心的包容中子的单自旋不对称性。来自该数据集的先前出版物集中于这种不对称的核依赖性。在该测量中，使用自举展开技术在横向动量上提取了包含质子的中子单旋不对称对质子-质子碰撞的明确的横向动量依赖性。这种明显的横向动量依赖性将有助于增进对造成这些不对称性的机理的理解。