Searching for light neutralinos with a displaced vertex at the LHC

Abstract

We study a bino-like light neutralino (${\tilde{\chi }}_1^0$) produced at the LHC from the decay of a scalar lepton (${\tilde{e}}_L$) through the process $pp\to {\tilde{e}}_L\to e{\tilde{\chi }}_1^0$ in the context of R-parity-violating (RPV) supersymmetry where ${\tilde{\chi }}_1^0$ is the lightest supersymmetric particle. For small masses and RPV couplings, the neutralino is naturally long-lived and its decay products can be identified as displaced tracks. Following existing searches, we propose a displaced-vertex search strategy for such a light neutralino with a single RPV coupling switched on, ${\lambda }_{111}^{\prime }$, in the mass range $10\,\mbox{GeV} \lesssim m_{\tilde χ_1^0}\lesssim 230\,\mbox{GeV}$. We perform Monte Carlo simulations and conclude that at the high-luminosity LHC, the proposed search can probe values of ${\lambda }_{111}^{\prime }$ down to two orders of magnitude smaller than current bounds and up to 40 times stronger than projected limits from monolepton searches.

arXiv comment16 pages, 6 figures; v2: comment added, matches version to be published in JHEP; v3: figure 2 corrected

References in corpus (43)

• An Introduction to PYTHIA 8.2
• MadGraph 5 : Going Beyond
• Out Of This World Supersymmetry Breaking
• Gaugino Mass without Singlets
• R-parity violating supersymmetry
• FASER: ForwArd Search ExpeRiment at the LHC
• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• Bounds on R-parity Violating Couplings at the Weak Scale and at the GUT Scale
• Supersymmetry and Neutrinoless Double Beta Decay
• Light Relic Neutralinos
• Mass Bounds on a Very Light Neutralino
• Supersymmetric Dark Matter - How Light Can the LSP Be?
• Collider Searches for Long-Lived Particles Beyond the Standard Model
• Signatures of long-lived gluinos in split supersymmetry
• Heavy neutral fermions at the high-luminosity LHC
• Keung-Senjanović process at LHC: from LNV to displaced vertices to invisible decays
• Killing the cMSSM softly
• Supernovae and Light Neutralinos: SN1987A Bounds on Supersymmetry Revisited
• Can neutralinos in the MSSM and NMSSM scenarios still be light?
• Displaced vertices as probes of sterile neutrino mixing at the LHC
• Searches for light sterile neutrinos with multitrack displaced vertices
• White Dwarfs constrain Dark Forces
• Long-Lived Fermions at AL3X
• A supersymmetric solution to the KARMEN time anomaly
• Lower limit on the neutralino mass in the general MSSM
• Cornering light Neutralino Dark Matter at the LHC
• R-parity Violation and Light Neutralinos at CODEX-b, FASER, and MATHUSLA
• Hunting the lightest lightest neutralinos
• R-parity Violation and Light Neutralinos at ANUBIS and MAPP
• Physics with Far Detectors at Future Lepton Colliders
• What is the discrete gauge symmetry of the R-parity violating MSSM?
• Implications of a Massless Neutralino for Neutrino Physics
• Prompt Signals and Displaced Vertices in Sparticle Searches for Next-to-Minimal Gauge Mediated Supersymmetric Models
• R-Parity Violation and Light Neutralinos at SHiP and the LHC
• Gravitino cosmology with a very light neutralino
• A Supersymmetric Resolution of the KARMEN Anomaly
• Long-lived light neutralinos at future $Z-$factories
• Long-lived light neutralinos at Belle II
• Nucleon decay in the R-parity violating MSSM
• Revisiting the LHC reach in the displaced region of the minimal left-right symmetric model
• Searching for light long-lived neutralinos at Super-Kamiokande
• Neutrinoless Double Beta Decay via Light Neutralinos in R-Parity Violating Supersymmetry
• Decaying light particles in the SHiP experiment. II. Signal rate estimates for light neutralinos

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