Nucleon-nucleon bremsstrahlung emission of massive axions

Giannotti, Maurizio; Nesti, Fabrizio

doi:10.1103/physrevd.72.063005

Cited by 30 publications

(42 citation statements)

References 36 publications

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“…In [14] (see also [15]), the existence of a MeV axion, with f a ∼ 10 6 GeV was postulated as a model for the production of Gamma Ray Bursts. In the mirror axion models [16], the mass relation (1) was changed by virtue of the axion interaction with a hidden (mirror) sector of particles so that the mass could be ∼ 1 MeV with a PQ constant larger than 10 5 GeV.…”

Section: Heavy Axion Modelsmentioning

confidence: 98%

“…For nonrelativistic axions, a number of numerical tests performed showed that the effect of these approximations is minimal [13], and probably less than the uncertainties associated with the emission of massive axions from the SN core (cfr. [15]), and the One Pion Exchange (OPE) approximation to describe the bremsstrahlung processes in the nuclear medium [4]. Therefore, we have avoided unuseful complications and calculated the photon spectrum with the above approximations.…”

Section: Heavy Axions and Supernovaementioning

confidence: 99%

“…Pseudoscalar fields can be produced in the SN core, mainly through nucleon bremsstrahlung processes NN → NNa [4,21,15], and then freely stream away from it 3 . For masses of 1 MeV or so, the axion lifetime, Eq.…”

Section: Heavy Axions and Supernovaementioning

confidence: 99%

See 2 more Smart Citations

Phenomenological Implications of Heavy Axion Models

Giannotti¹,

Nita²,

Welch³

et al. 2010

AIP Conference Proceedings

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Several models predict the existence of heavy (mass ∼ MeV or so) pseudoscalar (axion-like) particles. This possibility is permitted only if the relation between the axion mass and the PecceiQuinn constant is relaxed.Here we consider a possible phenomenological consequence of these models. After being produced in the supernova core, these heavy axions would escape and a fraction of them would decay into photons before reaching the earth. We calculated the expected spectrum of these photons from the supernovae SN1987A and CAS A, in terms of the axion mass and the Peccei-Quinn constant f a , and compared our results to the data from the FERMI Large Area Telescope. The analysis provides strong constraints on the allowed region in the axion parameter space for 100keV m a 1 GeV. This mass region is completely excluded unless f a > 10 12 GeV. For axion masses ∼ 100MeV, the constraint is stronger f a > a few 10 14 GeV.

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Section: Heavy Axion Modelsmentioning

confidence: 98%

Section: Heavy Axions and Supernovaementioning

confidence: 99%

See 1 more Smart Citation

Phenomenological Implications of Heavy Axion Models

Giannotti¹,

Nita²,

Welch³

et al. 2010

AIP Conference Proceedings

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show abstract

“…See text for more details. 10 −8 g aN N 10 −6 for m a 100 MeV [183,[187][188][189][190][191][192], as shown in blue in Fig. 10.…”

Section: Coupling To Nucleonmentioning

confidence: 99%

Gravitational waves from first-order phase transition in a simple axion-like particle model

Dev¹,

Ferrer²,

Zhang³

et al. 2019

J. Cosmol. Astropart. Phys.

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We consider a gauge-singlet complex scalar field Φ with a global U (1) symmetry that is spontaneously broken at some high energy scale f a . As a result, the angular part of the Φ-field becomes an axion-like particle (ALP). We show that if the Φ-field has a non-zero coupling κ to the Standard Model Higgs boson, there exists a large region in the (f a , κ) parameter space where the global U (1) symmetry-breaking induces a strongly first order phase transition, thereby producing stochastic gravitational waves that are potentially observable in current and future gravitational-wave detectors. In particular, we find that future gravitational-wave experiments such as LISA, BBO and aLIGO+ could probe a broad range of the energy scale 10 3 GeV f a 10 8 GeV, independent of the ALP mass. Since all the ALP couplings to the Standard Model particles are proportional to inverse powers of the energy scale f a (up to model-dependent O(1) coefficients), the gravitational-wave detection prospects are largely complementary to the current laboratory, astrophysical and cosmological probes of the ALP scenarios.

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“…The bremsstrahlung production of massive axions has been studied in ref. [22], using the one pion exchange approximation. We use the same formalism to obtain our HALP emission rates.…”

Section: Generalization Of the Energy Loss Mechanismmentioning

confidence: 99%

Real-Time Measurement of the Population Densities in Gd Atomic Vapor Using Diode Laser Absorption Spectroscopy at 394.554 nm

Jung

Kim

et al. 2004

Jpn. J. Appl. Phys.

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We derive new constraints on the coupling of heavy pseudoscalar (axion-like) particles to photons, based on the gamma ray flux expected from the decay of these particles into photons. After being produced in the supernova core, these heavy axion-like particles would escape and a fraction of them would decay into photons before reaching the Earth. We have calculated the expected flux on Earth of these photons from the supernovae SN 1987A and Cassiopeia A and compared our results to data from the Fermi Large Area Telescope. This analysis provides strong constraints on the parameter space for axion-like particles. For a particle mass of 100 MeV, we find that the Peccei-Quinn constant, f a , must be greater than about 10 15 GeV. Alternatively, for f a = 10 12 GeV, we exclude the mass region between approximately 100 eV and 1 GeV.

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Nucleon-nucleon bremsstrahlung emission of massive axions

Cited by 30 publications

References 36 publications

Phenomenological Implications of Heavy Axion Models

Phenomenological Implications of Heavy Axion Models

Gravitational waves from first-order phase transition in a simple axion-like particle model

Real-Time Measurement of the Population Densities in Gd Atomic Vapor Using Diode Laser Absorption Spectroscopy at 394.554 nm

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