arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.4566hep-phhep-ex
收藏

用原子宇称破坏测量约束超中性规范玻色子

Constraining Extra Neutral Gauge Bosons with Atomic Parity Violation Measurements

Ross Diener, Stephen Godfrey, Ismail Turan

摘要:

一种新的中性规范玻色子$Z'$的发现,可以提供物理学超越标准模型的第一个具体证据。我们探讨如何在原子宇称破坏(APV)实验中的核弱电荷测量可以用来约束$Z'$玻色子。我们使用最近测量的$^{133}$ Cs核弱电荷估计的质量下限的$Z'$玻色子的一些代表性的模型,并把一个新发现的$Z'$玻色子的耦合约束。我们还考虑如何这些约束可能会改善未来的APV实验,将测量核弱电荷的多个同位素。我们展示了如何测量一个单一的同位素,并结合测量成比率和差异,可以用来约束耦合的$Z'$和模型之间的区别。我们发现,如果发现了$Z'$,当前和未来的APV实验可能在揭示新物理学方面发挥重要作用。

英文摘要:

The discovery of a new neutral gauge boson, $Z'$, could provide the first concrete evidence of physics beyond the standard model. We explore how nuclear weak charge measurements in atomic parity violation (APV) experiments can be used to constrain $Z'$ bosons. We use the recent measurement of the $^{133}$Cs nuclear weak charge to estimate lower bounds on the mass of $Z'$ bosons for a number of representative models and to put constraints on the couplings of a newly discovered $Z'$ boson. We also consider how these constraints might be improved by future APV experiments that will measure nuclear weak charges of multiple isotopes. We show how measurements of a single isotope, and combining measurements into ratios and differences, can be used to constrain the couplings of a $Z'$ and discriminate between models. We find that current and future APV experiments could potentially play an important role in unravelling new physics if a $Z'$ were discovered.

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。

↑