Lower limit on the gravitino mass in low-scale gauge mediation with m≃ 125 GeV

Ibe, Masahiro; Yanagida, Tsutomu T.

doi:10.1016/j.physletb.2016.11.016

Cited by 7 publications

(9 citation statements)

References 71 publications

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“…Although we could consider smaller √ F 0 ≈ 10 TeV, it is challenging to build a model of SUSY breaking that operates at such a low scale. For instance, two recent attempts to build models of very low-scale SUSY breaking achieve m 3/2 ∼ 1 eV, with √ F 0 65 TeV [203,204]. On the other hand, values of √ F 0 below ∼ 140 TeV are favored by cosmological constraints from CMB lensing and cosmic shear [205].…”

Section: Stealth Supersymmetry 15mentioning

confidence: 99%

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

Curtin,

Drewes,

McCullough

et al. 2018

Preprint

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: Stealth Supersymmetry 15mentioning

confidence: 99%

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

Curtin,

Drewes,

McCullough

et al. 2018

Preprint

167

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“…Especially, the perturbatively calculable models with stable SUSY breaking vacua are strongly disfavored by these constraints. If we do not restrict to perturbatively calculable models, we can use additional sector [50], and/or strongly interacting messenger sector [51] to stabilize the SUSY breaking vacua. Although the precise calculation of the SSM mass spectrum is difficult for the strongly interacting models, adopting k = 4π with eq.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Low-scale gauge mediation after LHC Run 2

Shirai

2018

Physics Letters B

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We study low-scale gauge mediated supersymmetry breaking models with a very light gravitino of mass O(1) eV. The cosmological upper bound on the gravitino mass and the collider constraints on the sparticle masses give a significant impact on such models. We apply the latest results of the LHC to these models and obtain the current constraints. We find that perturbatively calculable classes of low-scale gauge mediation models can be largely excluded.

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“…refs. [55][56][57][58][59][60][61]). In the weakly coupled low scale gauge mediation models, however, the large gravitino mass m 3/2 10 eV is required to explain the observed Higgs boson mass by heavy SUSY particles with masses around O(10) TeV [62,63].…”

Section: Jhep07(2020)048mentioning

confidence: 99%

“…N mess = 4, M mess 10 5 GeV, and F GeV[61]. Here, N mess denotes a number of pairs of the chiral superfields (messengers) in the fundamental and anti-fundamental representations of SU(5), M mess is the messenger mass scale, and F 1/is the mass splitting between the messenger scalars and the fermions.…”

mentioning

confidence: 99%

QCD axion from a spontaneously broken B − L gauge symmetry

Choi

Suzuki

Yanagida

2020

J. High Energ. Phys.

Self Cite

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In this paper, we show that the Peccei-Quinn (PQ) symmetry with a good quality can be realized in a simple B −L extension of the minimal supersymmetric standard model. The PQ symmetry is a remnant of the B − L gauge symmetry at the renormalizable level. Besides, the sufficient quality of the PQ symmetry is preserved by a non anomalous discrete gauged R-symmetry and a small gravitino mass m3/2 ≪ 100 GeV. A viable mass range is $$ {m}_{3/2}=\mathcal{O}(1) $$ m 3 / 2 = O 1 eV which allows a high reheating temperature and many baryogenesis scenarios typified by the thermal leptogenesis without any astrophysical and cosmological problems. Such a light gravitino may be tested in the future 21cm line observations.

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Lower limit on the gravitino mass in low-scale gauge mediation with m≃ 125 GeV

Cited by 7 publications

References 71 publications

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

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

Low-scale gauge mediation after LHC Run 2

QCD axion from a spontaneously broken B − L gauge symmetry

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