Neutrinos and gamma rays from long-lived mediator decays in the Sun

Niblaeus, Carl; Beniwal, Ankit; Edsjö, Joakim

doi:10.1088/1475-7516/2019/11/011

Cited by 51 publications

(54 citation statements)

References 79 publications

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“…Recently, a similar study using also the 79-string IceCube public data has been done by Niblaeus el al. [15] obtaining similar exclusion regions, but slightly less constraining regions. The difference between both studies is not completely clear, it may be due to a more detailed treatment in the propagation of particles in the last study, or in differences in the statistics treatment.…”

Section: Analysis With the 79-string Icecube Public Datamentioning

confidence: 71%

Testing Secluded Dark Matter Models with Neutrino Telescopes

Herrero¹

2020

Proceedings of the International Conference on Neutrinos and Dark Matter (NDM-2020)

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The existence of Dark Matter (DM) in the Universe is supported by cosmological and astrophysical evidences. Observations indicate that DM is non-baryonic, non-relativistic and not subject to electromagnetic interactions, but its nature is still unknown. A hypothesis can be based on the idea that DM is "secluded" from Standard Matter particles and that the annihilation is only possible through a metastable mediator. Neutrino telescopes may be efficient tools to test Secluded Dark Matter (SDM) models, such as dark photon models, by means of different searches in the Sun, Earth and Galactic Center. In this work, searches for SDM in neutrino telescopes are discussed, especially the analysis done of the 79-string IceCube public data to test SDM models. In this analysis no significant excess over background is observed and constraints on the parameters of the models are derived. The analysis is also used to constrain the dark photon model.

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Section: Analysis With the 79-string Icecube Public Datamentioning

confidence: 71%

Testing Secluded Dark Matter Models with Neutrino Telescopes

Herrero¹

2020

Proceedings of the International Conference on Neutrinos and Dark Matter (NDM-2020)

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“…Mediator masses ranging from 10 GeV to 10 TeV have been studied. To simulate the expected neutrino signal the WIMPSIM simulation package [11,12] was used. This package does not include some electroweak corrections that are known to have a strong effect on signals from mediators decaying into quarks or neutrinos directly [14][15][16].…”

Section: Analysis Methodsmentioning

confidence: 99%

“…Search for secluded dark matter with 6 years of IceCube data Figure 2: Spectra generated with the WIMPSIM simulation in comparison to the results from the WIMPSIM publication on the 5.0 update of the code [11,12].…”

Section: Pos(icrc2021)521mentioning

confidence: 99%

Search for secluded dark matter with 6 years of IceCube data

Toennis¹,

Abbasi²,

Ackermann³

et al. 2021

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

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The IceCube neutrino observatory-installed in the Antarctic ice-is the largest neutrino telescope to date. It consists of 5,160 photomultiplier-tubes spread among 86 vertical strings making a total detector volume of more than a cubic kilometer. IceCube detects neutrinos via Cherenkov light emitted by charged relativistic particles produced when a neutrino interacts in or near the detector. The detector is particularly sensitive to high-energy neutrinos of due to its size and photosensor spacing. In this analysis we search for dark matter that annihilates into a metastable mediator that subsequently decays into Standard Model particles. These models yield an enhanced high-energy neutrino flux from dark matter annihilation inside the Sun compared to models without a mediator. Neutrino signals that are produced directly inside the Sun are strongly attenuated at higher energies due to interactions with the solar plasma. In the models considered here, the mediator can escape the Sun before producing any neutrinos, thereby avoiding attenuation. We present the results of an analysis of six years of IceCube data looking for dark matter in the Sun. We consider mediator lifetimes between 1 ms to 10 s and dark matter masses between 200 GeV and 75 TeV.

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“…To make predictions of event rates in neutrino telescopes for different polarisations we use the WimpSim package [2,48,49]. WimpSim is an event based Fortran code that simulates the full chain from dark matter annihilation to the interaction in a neutrino telescope on Earth.…”

Section: Simulation Of Neutrino Event Rates With Wimpsimmentioning

confidence: 99%

“…The produced neutrinos are then propagated from the production point to a detector on Earth, where interactions in the Sun or Earth and oscillations are handled in a full three-flavour setup. Apart from simulating dark matter annihilations in the centre of the Sun or Earth [2], there are also options to simulate the neutrino flux from cosmic ray interactions in the solar atmosphere [48] as well as the flux of neutrinos, gamma-rays and charged cosmic rays from annihilation of dark matter into long-lived mediators that decay away from the solar core [49].…”

Section: Simulation Of Neutrino Event Rates With Wimpsimmentioning

confidence: 99%

Effect of polarisation and choice of event generator on spectra from dark matter annihilations

Niblaeus

Cornell

Edsjö

2019

J. Cosmol. Astropart. Phys.

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If indirect detection searches are to be used to discriminate between dark matter particle models, it is crucial to understand the expected energy spectra of secondary particles such as neutrinos, charged antiparticles and gamma-rays emerging from dark matter annihilations in the local Universe. In this work we study the effect that both the choice of event generator and the polarisation of the final state particles can have on these predictions. For a variety of annihilation channels and dark matter masses, we compare yields obtained with Pythia8 and Herwig7 of all of the aforementioned secondary particle species. We investigate how polarised final states can change these results and do an extensive study of how the polarisation can impact the expected flux of neutrinos from dark matter annihilations in the centre of the Sun.We find that differences between the event generators are larger for yields of hadronic end products such as antiprotons, than for leptonic end products. Concerning polarisation, we conversely find the largest differences in the leptonic spectra. The large differences in the leptonic spectra point to the importance of including polarisation effects in searches for neutrinos from dark matter annihilations in the Sun. However, we find that these differences are ultimately somewhat washed out by propagation effects of the neutrinos in the Sun.

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Neutrinos and gamma rays from long-lived mediator decays in the Sun

Cited by 51 publications

References 79 publications

Testing Secluded Dark Matter Models with Neutrino Telescopes

Testing Secluded Dark Matter Models with Neutrino Telescopes

Search for secluded dark matter with 6 years of IceCube data

Effect of polarisation and choice of event generator on spectra from dark matter annihilations

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