Letter
Open Access

Searching for $C P$ violation through two-dimensional angular distributions in four-body decays of bottom and charmed baryons

School of Nuclear Science and Technology, University of South China, Hengyang, 421001 Hunan, China

^*zhangzh@usc.edu.cn

Phys. Rev. D 107, L011301 – Published 10 January, 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L011301

Abstract

We propose to search for $C P$ violation through the twofold angular distributions in the four-body decays of bottom and charmed hadrons. The two polar angles in the twofold angular distributions are correlated, to which the interferences of intermediate resonances are one important origin. These interferences will leave tracks in the twofold angular distributions, with which the $C P$ violation can be studied. Special attention is paid to the case when all the intermediate resonances are different, which is unique to four-body decays. It is suggested to look for $C P$ violation in four-body decays such as $Λ_{b}^{0} \to p π^{-} π^{+} π^{-}$ through the analysis of the twofold angular distributions. The method proposed in this paper is also widely applicable to other four-body decays processes.

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Phys. Rev. D 107, L011301– Published 10 January, 2023

Vol. 107, Iss. 1 — 1 January 2023

Received 28 September 2022
Accepted 16 December 2022

DOI: https://doi.org/10.1103/PhysRevD.107.L011301

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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Searching for $C P$ violation through two-dimensional angular distributions in four-body decays of bottom and charmed baryons

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Searching for CP violation through two-dimensional angular distributions in four-body decays of bottom and charmed baryons

Abstract

Physics Subject Headings (PhySH)

Article Text

References (58)

Searching for $C P$ violation through two-dimensional angular distributions in four-body decays of bottom and charmed baryons