Non-collider searches for stable massive particles

Burdin, S.; Fairbairn, Malcolm; Mermod, P.; Milstead, D. A.; Pinfold, J. L.; Sloan, T.; Taylor, W.

doi:10.1016/j.physrep.2015.03.004

Cited by 93 publications

(85 citation statements)

References 570 publications

(869 reference statements)

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“…Assuming that the SIMP is the dominant form of DM, a particle lighter than ∼ 10 TeV that can form a bound state is excluded [8] (see also [26]). This constraint is avoided if the SIMP has purely repulsive SIMP-nucleon interactions, which may be achieved if it interacts with SM particles through a scalar or vector mediator with opposite sign couplings.…”

Section: Simplified Simp Modelsmentioning

confidence: 99%

Simplified SIMPs and the LHC

Daci

Bruyn

Lowette

et al. 2015

J. High Energ. Phys.

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The existence of Dark Matter (DM) in the form of Strongly Interacting Massive Particles (SIMPs) may be motivated by astrophysical observations that challenge the classical Cold DM scenario. Other observations greatly constrain, but do not completely exclude, the SIMP alternative. The signature of SIMPs at the LHC may consist of neutral, hadron-like, trackless jets produced in pairs. We show that the absence of charged content can provide a very efficient tool to suppress dijet backgrounds at the LHC, thus enhancing the sensitivity to a potential SIMP signal. We illustrate this using a simplified SIMP model and present a detailed feasibility study based on simulations, including a dedicated detector response parametrization. We evaluate the expected sensitivity to various signal scenarios and tentatively consider the exclusion limits on the SIMP elastic cross section with nucleons.

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Section: Simplified Simp Modelsmentioning

confidence: 99%

Simplified SIMPs and the LHC

Daci

Bruyn

Lowette

et al. 2015

J. High Energ. Phys.

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“…Traveling through the distance L 0 , the monopole drains energy ∆E 10 11 GeV from the magnetic field and becomes ultra-relativistic [25]. So, although the monopoles when decoupled around 29.5 MeV were non-relativistic, the remnant monopoles at present universe should be treated as relativistic.…”

Section: Parker Boundmentioning

confidence: 99%

Cosmological Implications of Electroweak Monopole

Cho

2018

EPJ Web Conf.

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In this talk we review the basic features of the electroweak monopole, and estimate the remnant electroweak monopole density of the standard model in the present universe. We show that, although the electroweak phase transition is of the first order, the monopole production comes from the thermal fluctuations of the Higgs field after the phase transition, not the vacuum bubble collisions during the phase transition. Moreover, most of the monopoles produced initially are annihilated as soon as created, and this annihilation continues very long time, longer than the muon pair annihilation time. As the result the remnant monopole density at present universe becomes very small, of 10 −11 of the critical density, too small to be the dark matter. We discuss the physical implications of our results on the ongoing monopole detection experiments.PACS numbers: 14.80. Hv, Keywords: electroweak monopole, mass of electroweak monopole, cosmological production of electroweak monopole, remnant density of electroweak monopole, seed of large scale structure.

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“…(Note that these particles can be considered long-lived for collider experiment purposes, but not at cosmological scales. Thus, cosmological constraints as those coming from nucleosynthesis can be neglected [63].) On top of that, there is a third source of constraints.…”

Section: Jhep06(2015)105mentioning

confidence: 99%

Composite Dark Sectors

Carmona

Chala

2015

J. High Energ. Phys.

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We introduce a new paradigm in Composite Dark Sectors, where the full Standard Model (including the Higgs boson) is extended with a strongly-interacting composite sector with global symmetry group G spontaneously broken to H ⊂ G. We show that, under well-motivated conditions, the lightest neutral pseudo Nambu-Goldstone bosons are natural dark matter candidates for they are protected by a parity symmetry not even broken in the electroweak phase. These models are characterized by only two free parameters, namely the typical coupling g D and the scale f D of the composite sector, and are therefore very predictive. We consider in detail two minimal scenarios, SU(3)/[SU(2) × U(1)] and [SU(2) 2 × U(1)]/[SU(2) × U(1)], which provide a dynamical realization of the Inert Doublet and Triplet models, respectively. We show that the radiatively-induced potential can be computed in a five-dimensional description with modified boundary conditions with respect to Composite Higgs models. Finally, the dark matter candidates are shown to be compatible, in a large region of the parameter space, with current bounds from dark matter searches as well as electroweak and collider constraints on new resonances.

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Non-collider searches for stable massive particles

Cited by 93 publications

References 570 publications

Simplified SIMPs and the LHC

Simplified SIMPs and the LHC

Cosmological Implications of Electroweak Monopole

Composite Dark Sectors

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