Work

Sgoldstino phenomenology at SND@HL-LHC

Year: 2026

Type: article

Abstract: A bstract We study the phenomenology of light scalar sgoldstinos, with masses from the dimuon threshold up to a few GeV, focusing on their production and detection prospects at the SND@HL-LHC experiment. We review the effective sgoldstino interactions with Standard Model particles, the dominant meson-decay production channels, and the relevant experimental constraints on the model parameter space. We also outline the recently proposed SND@HL-LHC detector configuration and discuss the kinematics and track separation of the muon pair produced in sgoldstino decays inside the detector volume. For two representative sets of supersymmetry-breaking parameters, we present sensitivity estimates and show that the muon-antimuon separation efficiency should be taken into account in searches for the dimuon signal.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep10(2026)005

Authors: D. Kalashnikov, E. K. Karkaryan

Institutions: Institute for Nuclear Research, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Russian Science Foundation

Awards: G2182211367, G3669621231