Probing heavy dark matter decays with multi-messenger astrophysical data

Ishiwata, Koji; Macías, Óscar; Ando, Shinʼichiro; Arimoto, M.

doi:10.1088/1475-7516/2020/01/003

Cited by 61 publications

(69 citation statements)

References 123 publications

(246 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A related approach was taken in ref. [101], where the authors used a hybrid approach of evolving the hadron FFs with QCD DGLAP, and decaying the particles with Pythia. As that work did not include electroweak effects, the differences to our results are similar to those shown on the bottom of figure 4.…”

Section: Jhep06(2021)121mentioning

confidence: 99%

Dark matter spectra from the electroweak to the Planck scale

Bauer

Rodd

Webber

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process involving a decay to the unbroken standard model, we determine the prompt distribution of stable states including photons, neutrinos, positrons, and antiprotons. These spectra are a crucial ingredient in the search for DM via indirect detection at the highest energies as being probed in current and upcoming experiments including IceCube, HAWC, CTA, and LHAASO. Our approach improves considerably on existing methods, for instance, we include all relevant electroweak interactions.

show abstract

Section: Jhep06(2021)121mentioning

confidence: 99%

Dark matter spectra from the electroweak to the Planck scale

Bauer

Rodd

Webber

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Furthermore, even if the particles decay too rapidly to be dark matter, they can have observable consequences as long as they are sufficiently long lived, as discussed for example in refs. [2,5,[51][52][53][54][55][56][57][58][59][60]. 4 The order of presentation will be as follows.…”

Section: Jhep11(2021)146mentioning

confidence: 99%

Computation of gravitational particle production using adiabatic invariants

Basso

Chung

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

Analytic and numerical techniques are presented for computing gravitational production of scalar particles in the limit that the inflaton mass is much larger than the Hubble expansion rate at the end of inflation. These techniques rely upon adiabatic invariants and time modeling of a typical inflaton field which has slow and fast time variation components. A faster computation time for numerical integration is achieved via subtraction of slowly varying components that are ultimately exponentially suppressed. The fast oscillatory remnant results in production of scalar particles with a mass larger than the inflationary Hubble expansion rate through a mechanism analogous to perturbative particle scattering. An improved effective Boltzmann collision equation description of this particle production mechanism is developed. This model allows computation of the spectrum using only adiabatic invariants, avoiding the need to explicitly solve the inflaton equations of motion.

show abstract

“…The dark-blue solid lines display the limits obtained in the case of zero detected events ( astro = 0). The thin gray lines are the existing constraints in the literature: a) for the ¯ channel with neutrino data from IceCube, PAO and ANITA [16]; b) for the ¯ channel with galactic multimessenger data [17]; c) for the ¯ channel with extragalactic multimessenger data [17].…”

Section: Pos(icrc2021)573mentioning

confidence: 99%

Testing the stability of heavy dark matter with up-coming radio neutrino telescopes

Hajjar¹

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

View full text Add to dashboard Cite

Astrophysical neutrinos with energies higher than > 10 PeV have not been measured yet, therefore, we do not know what kind of sources are contributing to this high energy neutrino flux. Concretely, we are interested in testing the hypothesis in which we have a hidden contribution coming from the decay of heavy dark matter particles. The first neutrino radio telescopes will be constructed during the following decade, having as a principal goal the detection of the cosmogenic neutrinos, and being able to disentangle the principal source contributing at these high energies for the astrophysical neutrino flux. In this work we study the projected sensitivity of up-coming neutrino radio telescopes, such as RNO-G, GRAND and IceCube-Gen2 radio array, to decaying dark matter scenarios. We perform a forecast analysis in order to place conservative constraints on the lifetime of dark matter within the range DM = [10 7 − 10 15 ] GeV after assuming the dominant astrophysical neutrino source, the one that will act as our background for the hidden dark matter signal. These forecasted limits open a new parameter space for some decaying channels, and complement the limits obtained for the channel due to its multi-messenger agreement.

show abstract

Probing heavy dark matter decays with multi-messenger astrophysical data

Cited by 61 publications

References 123 publications

Dark matter spectra from the electroweak to the Planck scale

Dark matter spectra from the electroweak to the Planck scale

Computation of gravitational particle production using adiabatic invariants

Testing the stability of heavy dark matter with up-coming radio neutrino telescopes

Contact Info

Product

Resources

About