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  • Open Access

Local baryon number at the LHC

Jon Butterworth1,*, Hridoy Debnath2,†, Joseph Egan1,‡, and Pavel Fileviez Pérez2,§

  • *Contact author: j.butterworth@ucl.ac.uk
  • †Contact author: hxd253@case.edu
  • ‡Contact author: joe.egan.23@ucl.ac.uk
  • §Contact author: pxf112@case.edu
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Phys. Rev. D 112, 015012 – Published 15 July, 2025

DOI: https://doi.org/10.1103/2wbm-g6yv

Abstract

The minimal theory in which the baryon number is spontaneously broken at the low scale predicts new fermions, one of which is a dark matter candidate, from gauge anomaly cancellation. We discuss the production mechanisms and decays of these new fermions, which include channels with multileptons and channels with long-lived charged fermions that can give rise to exotic signatures with “kinked” tracks at the Large Hadron Collider. We evaluate the constraints on the theory from current LHC searches and measurements and briefly comment on the excess in top pair production at threshold recently reported by CMS. We also discuss predictions for the h→γZB decay, where h is the SM-like Higgs and ZB is the new gauge boson associated with the baryon number.

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Phys. Rev. D 112, 015012– Published 15 July, 2025
  • Received 21 May 2025
  • Accepted 25 June 2025
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