arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1101.1965hep-phhep-exnucl-exnucl-th
收藏

发现强子对撞机强宇称破坏的分析工具

Analysis Tools for Discovering Strong Parity Violation at Hadron Colliders

Mihailo Backovic, John P. Ralston

摘要:

有几个论点认为,在高能强相互作用中可能观察到宇称破坏。我们介绍了新的分析工具,用于描述多粒子分布的方位依赖性,或“方位流”。“分析使用正交群O(2)和二面体群$D_{N}$的表示,这些表示是在二维中正确定义奇偶性所必需的。分类发现,在逐事件统计中使用的集体角表示不等价的张量观测值,这些观测值通常不能由单个“反应平面”表示。许多新的宇称违背观测量存在,从来没有被测量过,而许多新的宇称守恒观测量以前集中在一起,现在区分。我们使用“事件形状排序”的概念,建议分离的右手和左手的事件,我们讨论的横向和纵向自旋的影响。分析工具具有统计学稳健性,可同等应用于Tevatron、$RHIC$或$RHIC\, Spin$和$LHC$的低或高多重性事件。

英文摘要:

Several arguments suggest parity violation may be observable in high energy strong interactions. We introduce new analysis tools for describing the azimuthal dependence of multi-particle distributions, or "azimuthal flow." Analysis uses the representations of the orthogonal group O(2) and dihedral groups $D_{N}$ necessary to define parity correctly in two dimensions. Classification finds that collective angles used in event-by-event statistics represent inequivalent tensor observables that cannot generally be represented by a single "reaction plane". Many new parity-violating observables exist that have never been measured, while many new parity-conserving observables formerly lumped together are now distinguished. We use the concept of "event shape sorting" to suggest separating right- and left-handed events, and we discuss the effects of transverse and longitudinal spin. The analysis tools are statistically robust, and can be applied equally to low or high multiplicity events at the Tevatron, $RHIC$ or $RHIC\, Spin$, and the $LHC$.

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。

↑