Conference Presentation

PUBDB-2025-05813

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png BSM physics at the LHeC and the FCC-eh

Schwanenberger, C. (Corresponding author)DESY*

2025

Abstract: The Large Hadron electron Collider (LHeC) is the proposal to deliver electron-proton/nucleus collisions at CERN using the LHC hadron or nuclear beams and a 50 GeV electron beam from an Energy Recovery Linac (ERL) in racetrack configuration. While the 2021 update of its CDR [1] contemplated concurrent operation of electron-hadron and hadron-hadron collisions at the HL-LHC followed by standalone electron-hadron collisions, we propose, in view of the current HL-LHC schedule, an LHeC program extending the regular HL-LHC program with only a standalone electron-hadron operation phase [2]. In this way, the LHeC becomes a bridge from the HL-LHC to the next flagship project at CERN.In this talk we review the possibilities for BSM studies at the LHeC and FCC-eh. We highlight the possibilities for scenarios that are difficult to constrain in hadron colliders, particularly those implying short-lived displaced vertices. The case for ALPs, dark photons, sterile neutrinos and scalars from Higgs are shown. We also discuss the impact of the improved determination of PDFs+ at the LHeC and FCC-eh on the extension of high-mass searches at the HL-LHC and future hadron colliders.[1] P. Agostini et al. (LHeC/FCC-he Study Group), J. Phys. G 48, 110501 (2021), arXiv:2007.14491 [hep-ex].[2] F. Ahmadova et al., e-Print: 2503.17727 [hep-ex].

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Contributing Institute(s):

1. LHC/CMS Experiment (CMS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. Future Circular Collider
2. LHC: Other

Appears in the scientific report 2025

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Conference Presentation Schwanenberger, C. (Corresponding author)DESY*
Top and Electroweak physics at the LHeC
20252025 European Physical Society Conference on High Energy Physics, EPS-HEP 2025, MarseilleMarseille, France, 6 Jul 2025 - 11 Jul 20252025-07-062025-07-11     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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