The not-so-harmless axion

Dine, Michael; Fischler, Willy

doi:10.1016/0370-2693(83)90639-1

Cited by 2,757 publications

(2,194 citation statements)

References 12 publications

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“…Besides these archetypical examples, axion-like particles abound in the model-building bestiarum, e.g. axions as Dark Matter mediators [15], axion Dark Matter [16][17][18], axions from the compactification of extra-dimensions [19] or more general situations with multi-axion sectors [14].…”

Section: Jhep06(2015)173mentioning

confidence: 99%

ALPs at colliders

Mimasu

Sanz

2015

J. High Energ. Phys.

191

205

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New pseudo-scalars, often called axion-like particles (ALPs), abound in modelbuilding and are often associated with the breaking of a new symmetry. Traditional searches and indirect bounds are limited to light axions, typically in or below the KeV range for ALPs coupled to photons. We present collider bounds on ALPs from mono-γ, tri-γ and mono-jet searches in a model independent fashion, as well as the prospects for the LHC and future machines. We find that they are complementary to existing searches, as they are sensitive to heavier ALPs and have the capability to cover an otherwise inaccessible region of parameter space. We also show that, assuming certain model dependent correlations between the ALP coupling to photons and gluons as well as considering the validity of the effective description of ALP interactions, mono-jet searches are in fact more suitable and effective in indirectly constraining ALP scenarios.

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Section: Jhep06(2015)173mentioning

confidence: 99%

ALPs at colliders

Mimasu

Sanz

2015

J. High Energ. Phys.

191

205

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“…Since the minimum of the potential a m will be different from a i , the axion will undergo a damped oscillating motion about the minimum of the potential with the maximum initial amplitude of a i − a m . This oscillation will contribute an energy density [592, 593,594,595,596] 38) which would generically give a large contribution if f P Q is large with the oscillation amplitude (a i − a m )/(f P Q /N) fixed (which naively is naturally expected to be of O (1)). In the absence of fine tuning a i , the U(1) P Q breaking scale is then bounded to be f P Q /N < 10 12 GeV.…”

Section: 7mentioning

confidence: 99%

The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general minimal supersymmetric standard model (MSSM). Extensions to include neutrino masses and nonminimal theories are also discussed. Topics covered include models of supersymmetry breaking, phenomenological constraints from electroweak symmetry breaking, flavor/CP violation, collider searches, and cosmological constraints including dark matter and implications for baryogenesis and inflation.

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“…The other challenge will be to obtain the right abundance for the cold dark matter. Below M SM 1 TeV the only viable candidate is the coherent oscillations of the axionic cold dark matter [161][162][163]. For an intermediate string scale it is possible to have a viable KK cold dark matter whose abundance could be either obtained nonperturbatively from the decay of the modulus, or from thermal excitations.…”

Section: A Fluctuations In Inflationmentioning

confidence: 99%

Stringy effects during inflation and reheating

2006

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We consider inflationary cosmology in the context of string compactifications with multiple throats. In scenarios where the warping differs significantly between throats, string and Kaluza-Klein physics can generate potentially observable corrections to the cosmology of inflation and reheating. First we demonstrate that a very low string scale in the ground state compactification is incompatible with a high Hubble scale during inflation, and we propose that the compactification geometry is altered during inflation. In this configuration, the lowest scale is just above the Hubble scale, which is compatible with the effective field theory but still leads to potentially observable cosmic microwave background corrections. Also in the appropriate region of parameter space, we find that reheating leads to a phase of long open strings in the standard model sector (before the usual radiation-dominated phase). We sketch the cosmology of the long string phase and we discuss possible observational consequences.

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The not-so-harmless axion

Cited by 2,757 publications

References 12 publications

ALPs at colliders

ALPs at colliders

The soft supersymmetry-breaking Lagrangian: theory and applications

Stringy effects during inflation and reheating

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