(In)direct detection of boosted dark matter

Agashe, Kaustubh; Cui, Yanou; Necib, Lina; Thaler, Jesse

doi:10.1088/1475-7516/2014/10/062

Cited by 195 publications

(292 citation statements)

References 186 publications

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“…In this work, we focus on detecting Cherenkov protons instead of electrons from DM-matter collisions in the detector for the following reasons. First, as discussed earlier, for neutral-current type of interaction, scattering off protons has a larger rate than off electrons, except for models where very t-channel light mediator is involved [5]. Second, since the DM solar capture and rescatter rates are determined by the interaction between DM and nucleon, focusing on detecting proton signal at terrestrial experiments avoids introducing further model dependence in the DM-electron coupling.…”

Section: Detection Of Boosted Dm a Detection Mechanism For Signalsmentioning

confidence: 99%

“…One compelling possibility is to look for "boosted DM" that is not of thermal, cosmological origin, but rather is generated at late times, as introduced in [4][5][6]. Several well-motivated classes of models, such as multi-component DM models and models with non-minimal stabilization symmetries, can generate boosted DM as a product of annihilation or decay in nearby clumps of DM.…”

Section: Introductionmentioning

confidence: 99%

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Detecting Boosted Dark Matter from the Sun with Large Volume Neutrino Detectors

Berger

Cui

Zhao

2015

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We study novel scenarios where thermal dark matter (DM) can be efficiently captured in the Sun and annihilate into boosted dark matter. In models with semi-annihilating DM, where DM has a non-minimal stabilization symmetry, or in models with a multi-component DM sector, annihilations of DM can give rise to stable dark sector particles with moderate Lorentz boosts. We investigate both of these possibilities, presenting concrete models as proofs of concept. Both scenarios can yield viable thermal relic DM with masses O(1)-O(100) GeV. Taking advantage of the energetic proton recoils that arise when the boosted DM scatters off matter, we propose a detection strategy which uses large volume terrestrial detectors, such as those designed to detect neutrinos or proton decays. In particular, we propose a search for proton tracks pointing towards the Sun. We focus on signals at Cherenkov-radiation-based detectors such as Super-Kamiokande (SK) and its upgrade Hyper-Kamiokande (HK). We find that with spin-dependent scattering as the dominant DM-nucleus interaction at low energies, boosted DM can leave detectable signals at SK or HK, with sensitivity comparable to DM direct detection experiments while being consistent with current constraints. Our study provides a new search path for DM sectors with non-minimal structure. Contents

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Section: Detection Of Boosted Dm a Detection Mechanism For Signalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detecting Boosted Dark Matter from the Sun with Large Volume Neutrino Detectors

Berger

Cui

Zhao

2015

Self Cite

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“…Such relativistic scattering may arise either from a DM component which is produced with a relativistic velocity in the universe in a boosted DM (BDM) scenario or from a direct production of light DM inside the laboratory in fixed target experiments. In the framework of BDM, there are at least two DM components (heavy and light) which are stable each other [8][9][10][11] and the right thermal relic is obtained via assisted freeze-out mechanism [7]. The mass difference of the two DM particles is huge so that the light DM pair produced from the annihilation of the heavy DM pair in the present universe have relativistic velocities (the ratio of the heavy DM mass to the light one is the boost factor).…”

Section: Introductionmentioning

confidence: 99%

“…The flux of the relativistic light DM produced from the annihilation of the heavy DM is as small as O(10 −7 cm −2 s −1 ) for the heavy DM mass of O(10 GeV) so large volume neutrino detectors are usually considered to observe the signals [8]. On the other hand, a direct production of light DM particles inside the laboratory is possible for any kind of DM scenarios as long as they include a light DM below the center of mass energy of the fixed target experiments.…”

Section: Introductionmentioning

confidence: 99%

Non-minimal dark matter search in dark matter colliders

Shin

2018

EPJ Web Conf.

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Abstract. In the scenarios of dark matter (DM) with a non-minimal dark sector, we revisit a new detection strategy of observing two or three simultaneous signals from inelastic scattering of a boosted DM [1]. The relativistically incoming DM can scatter off inelastically to a heavier unstable dark sector particle which decays back in to the DM associated with visible Standard Model particles inside large volume neutrino detectors. The existence of the secondary procedure renders us to separate it from conventional neutrino scattering background. The relativistically incoming DM can come from the universe by the annihilation of heavy DM component in an inelastic boosted DM scenario or produced by the beam bombardments in fixed target experiments.

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“…We first remark that there could exist multiple DM species, and the DM models based on such a DM framework can give rise to not only non-trivial cosmological implications (e.g., "assisted freeze-out" [48]) but interesting phenomenology (see, e.g., "boosted DM" [49][50][51]). In this context, we assume a DM partner having a nontrivial and fixed boost, which could be achieved by the annihilation of another (heavier) DM.…”

Section: Introductionmentioning

confidence: 99%

Energy peak: Back to the Galactic Center GeV gamma-ray excess

Kim

Park

2016

Physics of the Dark Universe

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We propose a novel mechanism enabling us to have a continuum bump as a signature of gammaray excess in indirect detection experiments of dark matter (DM), postulating a generic dark sector having (at least) two DM candidates. With the assumption of non-zero mass gap between the two DM candidates, the heavier one directly communicates to the partner of the lighter one. Such a partner then decays into a lighter DM particle along with an "axion-like" particle (ALP) or dark "pion", which subsequently decays into a pair of photons, via a more-than-one step cascade decay process. Since the cascade is initiated by the dark partner obtaining a non-trivial fixed boost factor, a continuum γ-ray energy spectrum naturally arises even with a particle directly decaying into two photons. We apply the main idea to the energy spectrum of the GeV γ-rays from around the Galactic Center (GC), and find that the relevant observational data is well-reproduced by the theory expectation predicted by the proposed mechanism. Remarkably, the relevant energy spectrum has a robust peak at half the mass of the ALP or dark pion, as opposed to popular DM models directly annihilating to Standard Model particles where physical interpretations of the energy peak are not manifest. Our data analysis reports substantially improved fits, compared to those annihilating DM models, and ∼ 900 MeV mass of the ALP or dark pion.

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(In)direct detection of boosted dark matter

Cited by 195 publications

References 186 publications

Detecting Boosted Dark Matter from the Sun with Large Volume Neutrino Detectors

Detecting Boosted Dark Matter from the Sun with Large Volume Neutrino Detectors

Non-minimal dark matter search in dark matter colliders

Energy peak: Back to the Galactic Center GeV gamma-ray excess

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