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New physics opportunities for long-lived particles at electron-proton colliders

Curtin, David; Deshpande, Kaustubh; Fischer, Oliver; Zurita, José

Future electron-proton collider proposals like the LHeC or the FCC-eh can supply ab −1 of collisions with a center-of-mass energy in the TeV range, while maintaining a clean experimental environment more commonly associated with lepton colliders. We point out that this makes e − p colliders ideally suited to probe BSM signatures with final states that look like “hadronic noise” in the high-energy, pile-up-rich environment of pp colliders. We focus on the generic vector boson fusion production mechanism, which is available for all BSM particles with electroweak charges at mass scales far above the reach of most lepton colliders. This is in contrast to previous BSM studies at these machines, which focused on BSM processes with large production rates from the asymmetric initial state. We propose to exploit the unique experimental environment in the search for long-lived particle signals arising from Higgsinos or exotic Higgs decays. At e − p colliders, the soft decay products of long-lived Higgsino can be explicitly reconstructed (“displaced single pion”), and very short lifetimes can be probed. We find that e − p colliders can explore significant regions of BSM parameter space inaccessible to other collider searches, with important implications for the design of such machines.

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Verlagsausgabe §
DOI: 10.5445/IR/1000084497
Veröffentlicht am 17.07.2018
DOI: 10.1007/JHEP07(2018)024
Zitationen: 16
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2018
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000084497
HGF-Programm 51.01.01 (POF III, LK 01) Teilchenphysik
Erschienen in Journal of high energy physics
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Band 2018
Heft 7
Seiten Article: 24
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 04.07.2018
Schlagwörter Deep Inelastic Scattering (Phenomenology), Supersymmetry Phenomenology
Nachgewiesen in Scopus
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