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arXiv 1111.3027hep-phastro-ph.COnucl-th
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夸克在QCD Z（3）界面散射中的自发CP破坏

Spontaneous CP violation in quark scattering from QCD Z(3) interfaces

Abhishek Atreya, Anjishnu Sarkar, Ajit M. Srivastava

备注：
13 pages, Latex, 7 figures, Two different effective potentials studied with similar temperatures showing consistent results. Final published version
发表信息：
Physical Review D 85, 014009 (2012)
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摘要：

本文探讨了夸克和反夸克在QCD Z（3）畴壁上散射时自发CP破坏的可能性。这里的CP破坏是由不同Z（3）真空之间的背景规范场$(A_{0})$的非平凡分布引起的。我们从Z（3）界面的Polyakov环$L(\vec{x})$的轮廓计算了$A_{0}$在Z（3）界面上的空间变化，并利用Dirac方程计算了夸克和反夸克的反射。这种自发的CP破坏对相对论重离子碰撞实验有着有趣的影响，例如在高$P_{T}$下的重子增强。它也是额外J/ $ψ$抑制的来源。我们还讨论了它对早期宇宙的影响。

英文摘要：

In this paper, we explore the possibility of spontaneous CP violation in the scattering of quarks and anti-quarks from QCD Z(3) domain walls. The CP violation here arises from the nontrivial profile of the background gauge field $(A_{0})$ between different Z(3) vacua. We calculate the spatial variation of $A_{0}$ across the Z(3) interface from the profile of the Polyakov loop $L(\vec{x})$ for the Z(3) interface and calculate the reflection of quarks and antiquarks using the Dirac equation. This spontaneous CP violation has interesting consequences for the relativistic heavy-ion collision experiments, such as baryon enhancement at high $P_{T}$. It also acts as a source of additional J/$ψ$ suppression. We also discuss its implications for the early universe.

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。

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