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arXiv hep-ph/9306322hep-ph
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$e^-e^+$对撞机上$t$衰变中超对称性引起的CP破坏

SUSY-Induced CP Violation in $t$ Decays at $e^-e^+$ Colliders

Bohdan Grzadkowski, Wai-Yee Keung

摘要:

讨论了产生过程$e^-e^+ \to \ttbar$的衰变$t \to \ell^+νb$和$\bar t \to \ell^-\barν\bar b$中的CP破坏。由于在标准模型(SM)中提出的作为CP破坏的度量的不对称性甚至在单回路水平上消失,因此它可能是在SM之外搜索CP破坏的源的有用工具。作为一个例子的不对称性已计算内的超对称扩展的SM。讨论了在未来高能直线对撞机上测量的前景。

英文摘要:

CP violation in the decays $t \to \ell^+νb$ and $\bar t \to \ell^-\barν\bar b$ from the production process $e^-e^+ \to \ttbar$ is discussed. Since the asymmetry proposed as a measure of CP violation vanishes even at the one-loop level in the Standard Model (SM), it may be a useful tool to search for sources of CP violation outside of the SM. As an illustration the asymmetry has been computed within supersymmetric extensions of the SM. Prospects for its measurement at future high-energy linear colliders are discussed.

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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