• Open Access

Searching for the light Higgsinos in the MSSM at future ep colliders

Chengcheng Han, Ruibo Li, Ren-Qi Pan, and Kai Wang
Phys. Rev. D 98, 115003 – Published 4 December 2018

Abstract

The search for the light Higgsino in the minimal supersymmetric standard model is a crucial test of the naturalness criteria in supersymmetry. On the other hand, the direct production of light Higgsinos is also known as one of the most challenging supersymmetry searches at the LHC. The lack of visible leptons due to the compressed spectrum and their small production rates limit their discovery potential in both monojet plus ET events and weak boson fusion (WBF) production. The signal-to-background ratio prediction is usually within the background systematic uncertainties at the LHC. Without color exchange between the beams, ep colliders are well known to exhibit WBF. Therefore, we search for light Higgsinos at two future ep colliders at CERN: the Large Hadron electron Collider (LHeC) and the Future Circular Collider in hadron-electron mode (FCC-eh). The light Higgsinos will be produced in pairs through weak boson fusion with controlled background at these colliders. We find that a 95/145GeV Higgsino can be reached at the 2σ level at the future LHeC/FCC-eh with a luminosity of 3ab1, respectively.

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  • Received 9 April 2018
  • Revised 2 October 2018

DOI:https://doi.org/10.1103/PhysRevD.98.115003

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.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Chengcheng Han1,2,*, Ruibo Li1,†, Ren-Qi Pan1,‡, and Kai Wang1,§

  • 1Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310027, China
  • 2Kavli IPMU (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583, Japan

  • *chengcheng.han@ipmu.jp
  • bobli@zju.edu.cn
  • renqipan@zju.edu.cn
  • §wangkai1@zju.edu.cn

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Issue

Vol. 98, Iss. 11 — 1 December 2018

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