Production of doubly heavy baryons via Higgs boson decays

Juan-Juan Niu; Lei Guo; Hong-Hao Ma; Xing-Gang Wu

doi:10.1140/epjc/s10052-019-6842-0

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2019) 79: 339
https://doi.org/10.1140/epjc/s10052-019-6842-0

Regular Article - Theoretical Physics

Production of doubly heavy baryons via Higgs boson decays

Juan-Juan Niu¹, Lei Guo¹^*, Hong-Hao Ma² and Xing-Gang Wu¹

¹ Department of Physics, Chongqing University, Chongqing, 401331, People’s Republic of China
² Faculdade de Engenharia de Guaratinguetá, Universidade Estadual Paulista, Guaratinguetá, SP, 12516-410, Brazil

^* e-mail: guoleicqu@cqu.edu.cn

Received: 21 January 2019
Accepted: 3 April 2019
Published online: 15 April 2019

Abstract

We systematically analyzed the production of semi-inclusive doubly heavy baryons ( $\Xi _{cc}$ , $\Xi _{bc}$ and $\Xi _{bb}$ ) for the process $H^0 \rightarrow \Xi _{QQ'}+ \bar{Q'} + {\bar{Q}}$ through four main Higgs decay channels within the framework of non-relativistic QCD. The contributions from the intermediate diquark states, $\langle cc\rangle [^{1}S_{0}]_{\mathbf {6}}$ , $\langle cc\rangle [^{3}S_{1}]_{\bar{\mathbf {3}}}$ , $\langle bc\rangle [^{3}S_{1}]_{\bar{\mathbf {3}}/ \mathbf {6}}$ , $\langle bc\rangle [^{1}S_{0}]_{\bar{\mathbf {3}}/ \mathbf {6}}$ , $\langle bb\rangle [^{1}S_{0}]_{\mathbf {6}}$ and $\langle bb\rangle [^{3}S_{1}]_{\bar{\mathbf {3}}}$ , have been taken into consideration. The differential distributions and three main sources of the theoretical uncertainties have been discussed. At the High Luminosity Large Hadron Collider, there will be about 0.43 $\times 10^4$ events of $\Xi _{cc}$ , 6.32 $\times 10^4$ events of $\Xi _{bc}$ and 0.28 $\times 10^4$ events of $\Xi _{bb}$ produced per year. There are fewer events produced at the Circular Electron Positron Collider and the International Linear Collider, about $0.26\times 10^{2}$ events of $\Xi _{cc}$ , $3.83\times 10^{2}$ events of $\Xi _{bc}$ and $0.17\times 10^{2}$ events of $\Xi _{bb}$ in operation.