arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.03427hep-ph
收藏

奇偶奇分段函数

Parity odd Fragmentation Functions

Weihua Yang

摘要:

量子色动力学是强相互作用的非阿贝尔规范理论,其中宇称对称性可以被非平凡的$θ$ -真空隧穿效应破坏。$θ$ -真空诱导出局域奇偶奇畴.在这些区域中发生的反应会受到隧穿效应的影响,数量会变成奇偶奇数。在本文中,我们考虑的碎裂过程中,奇偶校验奇碎裂功能的介绍。通过对夸克-夸克关联子的分解,给出了碎裂函数。在16个碎片函数中,有8个是奇偶守恒的,其余的是奇偶违背的。它们是一一对应的。这些一维碎裂函数的正界。为了明确,我们还引入了奇偶校验奇相关器的算子定义。根据这个定义,我们证明了宇称奇碎裂函数是局部量,当对所有强子h求和时,宇称奇碎裂函数消失。

英文摘要:

Quantum chromodynamics is a non-Abelian gauge theory of strong interactions, in which the parity symmetry can be violated by the non-trivial $θ$-vacuum tunneling effects. The $θ$-vacuum induces the local parity odd domains. Those reactions that occur in these domains can be affected by the tunneling effects and quantities become parity odd. In this paper we consider the fragmentation process where parity odd fragmentation functions are introduced. We present the fragmentation functions by decomposing the quark-quark correlator. Among the total 16 fragmentation functions, 8 of them are parity conserved, and the others are parity violated. They have a one-to-one correspondence. Positivity bounds of these one dimensional fragmentation functions are shown. To be explicit, we also introduce a operator definition of the parity odd correlator. According to the definition, we give a proof that the parity odd fragmentation functions are local quantities and vanish when sum over all the hadrons h.

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。

↑