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arXiv 2302.01641hep-ph
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新CDF-II W玻色子质量与123模型的一致性

Consistency of New CDF-II W Boson Mass with 123-Model

B. Ait Ouazghour, R. Benbrik, E. Ghourmin, M. Ouchemhou, L. Rahili

AI总结:

针对费米实验室CDF-II实验测得的W玻色子质量与标准模型存在7σ偏差的问题,本研究结合理论与实验约束及S、T参数拟合结果,验证了123模型预测在95%置信水平下与该测量结果一致。

摘要:

费米实验室CDF-II实验最新更新的W玻色子质量测量结果显示,其与标准模型(SM)的预测存在7σ偏差。由此引发的开放性问题是:是否存在标准模型的扩展理论能够解释如此显著的偏差,或者这一结果会带来哪些现象学层面的影响。本文研究了理论约束对123模型的揭示作用,同时结合理论与实验约束,分析了CDF W玻色子质量测量结果与123模型预期的一致性。本研究还纳入了m_W^CDF测量前后的S、T参数拟合结果。在这些条件下,我们发现123模型的预测在95%置信水平(CL)下与测得的m_W^CDF一致。

英文摘要:

Following the recent update measurement of the W boson mass performed by the CDF-II experiment at Fermilab which indicates $7σ$ deviation from the SM prediction. As a consequence, the open question is whether there are extensions of the SM that can carry such a remarkable deviation or what phenomenological repercussions this has. In this paper, we investigate what the theoretical constraints reveal about the \ott model. Also, we study the consistency of a CDF W boson mass measurement with the 123-model expectations, taking into account theoretical and experimental constraints. Both fit results of $S$ and $T$ parameters before and after $m_{W}^{\rm{CDF}}$ measurement are, moreover, considered in this study. Under these conditions, we found that the 123-model prediction is consistent with the measured $m_{W}^{\rm{CDF}}$ at a $95\%$ Confidence Level (CL).

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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