SIMP model at NNLO in chiral perturbation theory

Hansen, Martin; Langæble, Kasper; Sannino, Francesco

doi:10.1103/physrevd.92.075036

Cited by 59 publications

(87 citation statements)

References 42 publications

(74 reference statements)

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“…19 A further enhancement comes, in general, as already remarked, from the fact that f p = f n . As a consequence, an absence of signal from XENON1T would exclude values of the masses of the DM and of the Z even above 5 TeV.…”

Section: Scalar Dark Mattermentioning

confidence: 94%

“…where g eff (T ) is the effective number of relativistic degrees of freedom at the temperature T and M Pl = 1.22×10 19 GeV is the Planck mass. Moreover, n χ,eq is the equilibrium number density obtained from Eq.…”

Section: The Wimp Paradigmmentioning

confidence: 99%

“…(v) Cluster collisions, such as the Bullet Cluster [17], constrain the level of self-interactions that DM particles can have (see however, Refs. [18,19] for alternative scenarios).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.

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Section: Scalar Dark Mattermentioning

confidence: 94%

Section: The Wimp Paradigmmentioning

confidence: 99%

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The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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“…The second breaking pattern emerges when two Dirac fermions belong to the fundamental representation of Sp(2N) which for N = 1 corresponds to SU (2). This theory became the ideal template for numerous relevant extensions of the standard model, ranging from ultraminimal technicolor [14][15][16] to composite (Goldstone) Higgs [17,18], as well as strongly interacting massive particles (SIMPs) for dark matter [19,20].…”

Section: Introductionmentioning

confidence: 99%

Extending chiral perturbation theory with an isosinglet scalar

2017

Self Cite

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We augment the chiral Lagrangian by an isosinglet scalar and compute the one-loop radiative corrections to the pion mass and decay constant, as well as the scalar mass. The calculations are carried out for different patterns of chiral symmetry breaking of immediate relevance for phenomenology and lattice investigations. By construction our results encompass several interesting limits, ranging from the dilaton to the linear sigma model.

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“…For example, the states of a strongly-coupled hidden sector provide a natural context [90] for strongly-interacting massive particle (SIMP) dark matter [91,92] models, in which 3 → 2 processes rather than 2 → 2 processes play a dominant role in determining the dark-matter abundance. Indeed, a number of explicit models along these lines have been constructed [93][94][95][96]. One of the most interesting ramifications of SIMP models is that they naturally give rise to dark-matter self-interactions with cross sections sufficiently large that dark-matter scattering can have an observable impact on structure formation [97].…”

Section: Discussionmentioning

confidence: 99%

Dynamical Dark Matter from strongly-coupled dark sectors

Huang

Thomas

2017

Phys. Rev. D

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Dynamical Dark Matter (DDM) is an alternative framework for dark-matter physics in which the dark sector comprises a vast ensemble of particle species whose Standard-Model decay widths are balanced against their cosmological abundances. Previous studies of this framework have focused on a particular class of DDM ensembles-motivated primarily by Kaluza-Klein towers in theories with extra dimensions-in which the density of dark states scales roughly as a polynomial of the mass. In this paper, by contrast, we study the properties of a different class of DDM ensembles in which the density of dark states grows exponentially with mass. Ensembles with this Hagedorn-like property arise naturally as the "hadronic" resonances associated with the confining phase of a strongly-coupled dark sector; they also arise naturally as the gauge-neutral bulk states of Type I string theories. We study the dynamical properties of such ensembles, and demonstrate that an appropriate DDM-like balancing between decay widths and abundances can emerge naturally-even with an exponentially rising density of states. We also study the effective equations of state for such ensembles, and investigate some of the model-independent observational constraints on such ensembles that follow directly from these equations of state. In general, we find that such constraints tend to introduce correlations between various properties of these DDM ensembles such as their associated mass scales, lifetimes, and abundance distributions. For example, we find that these constraints allow DDM ensembles with energy scales ranging from the GeV scale all the way to the Planck scale, but that the total present-day cosmological abundance of the dark sector must be spread across an increasing number of different states in the ensemble as these energy scales are dialed from the Planck scale down to the GeV scale. Numerous other correlations and constraints are also discussed.

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SIMP model at NNLO in chiral perturbation theory

Cited by 59 publications

References 42 publications

The waning of the WIMP? A review of models, searches, and constraints

The waning of the WIMP? A review of models, searches, and constraints

Extending chiral perturbation theory with an isosinglet scalar

Dynamical Dark Matter from strongly-coupled dark sectors

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