arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.6063hep-phhep-ex
收藏

$B_s\to D_s K$作为CPT违规的探测器

$B_s\to D_s K$ as a Probe of CPT Violation

Anirban Kundu, Soumitra Nandi, Sunando Kumar Patra, Amarjit Soni

备注：
v2: Discussions about LHCb reach added, final version to be published in Phys. Rev. D
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们讨论了可能在大型强子对撞机（LHC）上探测的$B_s$系统中CPT破坏的一些可能信号。我们展示了如何构建组合ofobservables来自标记和未标记的衰减率的$B_s\to D_s^\pm K^\mp$，可以明确区分CPT违反和CPT保存新的物理（NP）模型，有助于$B_s-\bar B_s$混合。我们选择这个特定的模式作为说明性的例子有两个原因：（i）在标准模型中，只有一个衰变振幅，所以更容易解开任何新的物理;（ii）$B_s$是一个中性介子，可以明确地识别任何只发生在混合中而不是衰变中的CPT破坏的迹象。我们定义了一个观测量，这是有用的提取CPT违反参数$B_s$衰变，并讨论了多远的结果是适用的，即使CPT违反存在于混合和衰变。

英文摘要：

We discuss some possible signals of CPT violation in the $B_s$ system that may be probed at the Large Hadron Collider (LHC). We show how one can construct combinations ofobservables coming from tagged and untagged decay rates of $B_s\to D_s^\pm K^\mp$ that can unambiguously differentiate between CPT violating and CPT conserving new physics (NP) models contributing in $B_s-\bar B_s$ mixing. We choose this particular mode as an illustrative example for two reasons: (i) In the Standard Model, there is only one decay amplitude, so it is easier to untangle any new physics; (ii) $B_s$ being a neutral meson, it is possible to unambiguously identify any sign of CPT violation that occurs only in mixing but not in decay. We define an observable which is useful to extract the CPT violating parameter in $B_s$ decay, and also discuss how far the results are applicable even if CPT violation is present in both mixing and decay.

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。

↑