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arXiv · 2105.06879

Prospects for direct CP tests of $hqq$ interactions

Rodrigo Alonso·Cristofero Fraser-Taliente·Chris Hays·Michael Spannowsky
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Abstract

We study the prospects for probing the CP structure of $hqq$ interactions using the decays of the lightest baryon $Λ_q$ formed in the quark's hadronization. The low yields of reconstructible events make it unlikely for tests to be performed with the next generation of colliders. In $h\to b\bar b\to Λ_b \barΛ_b$ decays a CP-sensitive distribution could be measured with a high-luminosity $e^+ e^-$ collider, while in both $h\to b\bar b\to Λ_b \barΛ_b$ and $h\to c\bar c\to Λ_c \barΛ_c$ decays such a distribution could be measured with a very high luminosity $μ^+ μ^-$ collider. However, we find that only the $μ^+ μ^-$ collider can produce enough $h\to b\bar b\to Λ_b \barΛ_b$ decays to probe a physical CP asymmetry in the $hbb$ vertex.

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Rodrigo Alonso, Cristofero Fraser-Taliente, Chris Hays, Michael Spannowsky. 2021-09-22. Prospects for direct CP tests of $hqq$ interactions. https://doi.org/10.1007/jhep08(2021)167

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