• Open Access

Search for the SUSY electroweak sector at ep colliders

Georges Azuelos, Monica D’Onofrio, Sho Iwamoto, and Kechen Wang
Phys. Rev. D 101, 095015 – Published 13 May 2020

Abstract

The sensitivity of future electron-proton colliders, the LHeC and FCC-eh, to weakly produced supersymmetric particles is evaluated in this paper. Supersymmetric scenarios where charginos (χ˜1±) and neutralinos (χ˜10 and χ˜20) are nearly degenerate in mass are considered. Two sets of models, which differ in the mass of sleptons (˜), are studied. Under the hypothesis that slepton masses are at the multi-TeV scale (“decoupled” scenario), the production processes for charginos and neutralinos at ep colliders, pejeχ˜χ˜ with χ˜=χ˜10, χ˜1± or χ˜20, are considered. For the models where slepton masses are above but close to χ˜1±, χ˜20 masses (“compressed” scenario), contributions from the processes pejχ˜e˜L and jχ˜ν˜ followed by the decays e˜Lχ˜1,20+e and ν˜χ˜1++e are also taken into account. These scenarios are analyzed with realistic detector performance, using multivariate techniques. Effects of systematic uncertainties and electron beam polarization dependence are also discussed. The reach is found to be complementary to the one obtained at pp colliders, in particular for the compressed-slepton scenario.

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  • Received 12 December 2019
  • Accepted 16 April 2020

DOI:https://doi.org/10.1103/PhysRevD.101.095015

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

Georges Azuelos1,2,†, Monica D’Onofrio3,‡, Sho Iwamoto4,5,6,§, and Kechen Wang7,*

  • 1Université de Montréal, Montréal, Quebec H3C 3J7, Canada
  • 2TRIUMF, Vancouver V6T 2A3, Canada
  • 3University of Liverpool, Oliver Lodge Laboratory, P.O. Box 147, Oxford Street, Liverpool L69 3BX, United Kingdom
  • 4Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, I-35131 Padua, Italy
  • 5INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padua, Italy
  • 6ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
  • 7Department of Physics, School of Science, Wuhan University of Technology, 430070 Wuhan, Hubei, China

  • *Corresponding author. kechen.wang@whut.edu.cn
  • georges.azuelos@cern.ch
  • Monica.D’Onofrio@cern.ch
  • §sho.iwamoto@ttk.elte.hu

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Vol. 101, Iss. 9 — 1 May 2020

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