Gauge mediation at the LHC: status and prospects

Knapen, Simon; Redigolo, Diego

doi:10.1007/jhep01(2017)135

Cited by 9 publications

(6 citation statements)

References 164 publications

(256 reference statements)

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“…In gauge mediated supersymmetry breaking (GMSB), Standard Model superpartners decay with a potentially long lifetime to a much lighter gravitino G. A classic review of this scenario is [170]; a re-cent update on the experimental status is [171]. Here we will not assume gauge mediation in the strict sense [172], but any theory of low-scale SUSY breaking with a light gravitino, which could (for example) include Yukawa mediation effects as well [173,174].…”

Section: Gauge Mediation 11mentioning

confidence: 99%

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case

Curtin,

Drewes,

McCullough

et al. 2018

Preprint

Self Cite

167

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We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a comprehensive survey of Standard Model (SM) extensions. LLPs are a common prediction of a wide range of theories that address unsolved fundamental mysteries such as naturalness, dark matter, baryogenesis and neutrino masses, and represent a natural and generic possibility for physics beyond the SM (BSM). In most cases the LLP lifetime can be treated as a free parameter from the µm scale up to the Big Bang Nucleosynthesis limit of ∼ 10 7 m. Neutral LLPs with lifetimes above ∼ 100m are particularly difficult to probe, as the sensitivity of the LHC main detectors is limited by challenging backgrounds, triggers, and small acceptances. MATHUSLA is a proposal for a minimally instrumented, large-volume surface detector near ATLAS or CMS. It would search for neutral LLPs produced in HL-LHC collisions by reconstructing displaced vertices (DVs) in a low-background environment, extending the sensitivity of the main detectors by orders of magnitude in the long-lifetime regime. In this white paper we study the LLP physics opportunities afforded by a MATHUSLA-like detector at the HL-LHC. We develop a model-independent approach to describe the sensitivity of MATHUSLA to BSM LLP signals, and compare it to DV and missing energy searches at AT-LAS or CMS. We then explore the BSM motivations for LLPs in considerable detail, presenting a large number of new sensitivity studies. While our discussion is especially oriented towards the long-lifetime regime at MATHUSLA, this survey underlines the importance of a varied LLP search program at the LHC in general. By synthesizing these results into a general discussion of the top-down and bottom-up motivations for LLP searches, it is our aim to demonstrate the exceptional strength and breadth of the physics case for the construction of the MATHUSLA detector.

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Section: Gauge Mediation 11mentioning

confidence: 99%

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case

Curtin,

Drewes,

McCullough

et al. 2018

Preprint

Self Cite

167

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“…The lightest neutralino can be bino, wino, Higgsino, or a mixture, and can decay to a photon and a non-observable gravitino, either promptly or with a long lifetime; see, e.g., refs. [13][14][15][16] for some LHC phenomenology studies. This signature has been searched for at the Tevatron -at CDF and D0 [17,18] -and at the LHC -at ATLAS [19] and CMS [20].…”

Section: Jhep02(2023)120mentioning

confidence: 99%

Searching for a single photon from lightest neutralino decays in R-parity-violating supersymmetry at FASER

Dreiner¹,

Köhler²,

Nangia³

et al. 2023

J. High Energ. Phys.

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In this work, we propose a search for a single photon at FASER and FASER2, produced from decays of bino-like, sub-GeV lightest neutralinos in the theoretical framework of the R-parity-violating (RPV) Minimal Supersymmetric Standard Model (MSSM). We consider a list of representative benchmark scenarios with one or two non-vanishing RPV couplings. The photon has an energy 𝒪(0.1) − 𝒪(1) TeV. We find a sensitivity reach for RPV couplings beyond the current bounds by orders of magnitude at FASER and FASER2.

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“…The contribution to slepton masses is also obtained from eq.s ( 25) and ( 27). This can be used to estimate the magnitude of the overall scale Λ X to be ≥ 30 TeV based on [63] from LEP limits, which may not have changed significantly even in the light of LHC data [64,65].…”

Section: Customised Gmsb For Left-right Symmetric Modelsmentioning

confidence: 99%

Why PeV scale left–right symmetry is a good thing

Yajnik

2017

Pramana - J Phys

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Left-right symmetric gauge theory presents a minimal paradigm to accommodate massive neutrinos with all known conserved symmetries duly gauged. The work presented here is based on the argument that the see-saw mechanism does not force the new right handed symmetry scale to be very high, and as such some of the species from the spectrum of the new gauge and Higgs bosons can have masses within a few orders of magnitude of the TeV scale. The scale of the left-right parity breaking in turn can be sequestered from the Planck scale by supersymmetry. We have studied several formulations of such Just Beyond Standard Model (JBSM) theories for their consistency with cosmology. Specifically the need to eliminate phenomenologically undesirable domain walls gives many useful clues. The possibility that the exact left-right symmetry breaks in conjunction with supersymmetry has been explored in the context of gauge mediation, placing restrictions on the available parameter space. Finally we have also studied a left-right symmetric model in the context of metastable supersymmetric vacua and obtained constraints on the mass scale of Right handed symmetry. In all the cases studied, The mass scale of right handed neutrino M R remains bounded from above, and in some of the cases the scale 10 9 GeV favourable for supersymmetric thermal leptogenesis is disallowed. On the other hand PeV scale remains a viable option, and the results warrant a more detailed study of such models for their observability in collider and astroparticle experiments.

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Gauge mediation at the LHC: status and prospects

Cited by 9 publications

References 164 publications

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case

Searching for a single photon from lightest neutralino decays in R-parity-violating supersymmetry at FASER

Why PeV scale left–right symmetry is a good thing

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