粲重子衰变中的大CP破坏。

IF 18.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin Pub Date : 2025-06-11 DOI:10.1016/j.scib.2025.05.045

Xiao-Gang He, Chia-Wei Liu

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引用次数: 0

摘要

这项工作提出了反三重态粲重子衰变中CP破坏的第一个详细的数值预测。采用风味SU(3)F对称和终态再散射框架，我们将ckm抑制的振幅分别与λb和λd成正比，λq=VuqVcq∗。发现了比预期更大的CP违反，达到10-3的数量级，与D0→π+π-，K+K-的数量级相似。这为观测粲重子衰变中的CP违背和测试标准模型开辟了一条有希望的途径。

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Large CP violation in charmed baryon decays.

This work presents the first detailed numerical predictions of CP violation in antitriplet charmed baryon decays. Adopting the flavor SU(3)_F symmetry and the final state re-scattering framework, we relate the CKM-suppressed amplitudes to the leading ones, which are proportional to λ_b and λ_d, respectively, with λ_q=V_uqV_cq^∗. Larger-than-expected CP violations are found, reaching the order of 10^-3, similar in magnitude to those in D⁰→π⁺π^-,K⁺K^-. This opens a promising avenue for observing CP violation in charmed baryon decays and testing the Standard Model.

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来源期刊

Science Bulletin MULTIDISCIPLINARY SCIENCES-

CiteScore

24.60

自引率

2.10%

发文量

8092

期刊介绍： Science Bulletin (Sci. Bull., formerly known as Chinese Science Bulletin) is a multidisciplinary academic journal supervised by the Chinese Academy of Sciences (CAS) and co-sponsored by the CAS and the National Natural Science Foundation of China (NSFC). Sci. Bull. is a semi-monthly international journal publishing high-caliber peer-reviewed research on a broad range of natural sciences and high-tech fields on the basis of its originality, scientific significance and whether it is of general interest. In addition, we are committed to serving the scientific community with immediate, authoritative news and valuable insights into upcoming trends around the globe.