Neutrino probes of the nature of light dark matter

Agarwalla, Sanjib Kumar; Blennow, Mattias; Fernández‐Martínez, E.; Mena, Olga

doi:10.1088/1475-7516/2011/09/004

Cited by 13 publications

(21 citation statements)

References 102 publications

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“…A promising avenue for cross-checking the low-mass direct detection data is with neutrino detectors [28][29][30][31][32][33], which search for the flux of neutrinos arising from dark matter annihilation in the core of the sun. Dark matter is captured by the sun via scattering off solar nuclei.…”

Section: Introductionmentioning

confidence: 99%

Tools for studying low-mass dark matter at neutrino detectors

et al. 2012

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We determine the neutrino spectra arising from low-mass (4 − 10 GeV) dark matter annihilating in the sun. We also determine the low-mass dark matter capture rates (element by element in the sun), assuming dark matter interacts either through elastic contact interactions, elastic long-range interactions, or inelastic contact interactions. These are the non-detector-specific data needed for determining the sensitivity of a neutrino detector to dark matter annihilating in the sun. As an application, we estimate the sensitivity of a one kiloton liquid scintillation neutrino detector (such as KamLAND) and LBNE (LAr-based) to low-mass dark matter with long-range interactions and compare this to the expected CDMS sensitivity. It is found that KamLAND's sensitivity can exceed that obtainable from the current CDMS data set by up to two orders of magnitude.

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Section: Introductionmentioning

confidence: 99%

Tools for studying low-mass dark matter at neutrino detectors

et al. 2012

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“…Moreover, the plots also show clear signs of degeneracy for the σBr q channel at lower DM masses than the 25 GeV assumed, which further decreases the ability to accurately determine the mass. In order to understand the origin of this degeneracy, in The existence of this degeneracy was confirmed by using the built-in degeneracy finder (see [58]) of MonteCUBES for all our experimental setups and for those masses where the degenerate solution could also be found within the region of study (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25). For the degenerate solution, the part of the spectrum in the σBr q channel that is lost by going to a lower DM mass is compensated by the harder spectrum of the σBr τ channel.…”

Section: A Detector Ratesmentioning

confidence: 82%

“…As demonstrated in [14], the neutrino spectra of the individual channels within these generic categories have negligible differences and the inclusion of separate degrees of freedom for each would only lead to almost perfect degeneracies among the components where only the following combinations can be independently constraint:…”

Section: Background Physicsmentioning

confidence: 99%

“…We therefore pose the question of how sensitive future neutrino detectors will be to these parameters, since determining them would give us important insight to the properties and nature of DM. This is a subject that has already been partially studied in several contributions to the literature [12,14,20], ranging from huge neutrino telescopes to the smaller scale neutrino detectors used in terrestrial experiments. However, a common approach within the literature has been to fix some of these parameters, usually the DM mass, while exploring the effect of the others.…”

Section: Background Physicsmentioning

confidence: 99%

“…For the detector technologies included in this study, we follow closely Ref. [14], where the very same detector technologies were investigated.…”

Section: Background Physicsmentioning

confidence: 99%

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Probing the Dark Matter mass and nature with neutrinos

Blennow¹,

Carrigan²,

Fernández‐Martínez³

2013

J. Cosmol. Astropart. Phys.

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We study the possible indirect neutrino signal from dark matter annihilations inside the solar interior for relatively light dark matter masses in the O(10) GeV range. Due to their excellent energy reconstruction capabilities, we focus on the detection of this flux in liquid argon or magnetized iron calorimeter detectors, proposed for the next generation of far detectors of neutrino oscillation experiments and neutrino telescopes. The aim of the study is to probe the ability of these detectors to determine fundamental properties of the dark matter nature such as its mass or its relative annihilation branching fractions to different channels. We find that these detectors will be able to accurately measure the dark matter mass as long as the dark matter annihilations have a significant branching into the neutrino or at least the τ channel. We have also discovered degeneracies between different dark matter masses and annihilation channels, where a hard τ channel spectrum for a lower dark matter mass may mimic that of a softer quark channel spectrum for a larger dark matter mass. Finally, we discuss the sensitivity of the detectors to the different branching ratios and find that it is between one and two orders of magnitude better than the current bounds from those coming from analysis of Super-Kamiokande

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Indirect searches of Galactic diffuse dark matter in INO-MagICAL detector

Khatun

Laha

Agarwalla

2017

J. High Energ. Phys.

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Abstract:The signatures for the existence of dark matter are revealed only through its gravitational interaction. Theoretical arguments support that the Weakly Interacting Massive Particle (WIMP) can be a class of dark matter and it can annihilate and/or decay to Standard Model particles, among which neutrino is a favorable candidate. We show that the proposed 50 kt Magnetized Iron CALorimeter (MagICAL) detector under the India-based Neutrino Observatory (INO) project can play an important role in the indirect searches of Galactic diffuse dark matter in the neutrino and antineutrino mode separately. We present the sensitivity of 500 kt·yr MagICAL detector to set limits on the velocityaveraged self-annihilation cross-section ( σv ) and decay lifetime (τ ) of dark matter having mass in the range of 2 GeV ≤ m χ ≤ 90 GeV and 4 GeV ≤ m χ ≤ 180 GeV respectively, assuming no excess over the conventional atmospheric neutrino and antineutrino fluxes at the INO site. Our limits for low mass dark matter constrain the parameter space which has not been explored before. We show that MagICAL will be able to set competitive constraints, σv ≤ 1.87 × 10 −24 cm 3 s −1 for χχ → νν and τ ≥ 4.8 × 10 24 s for χ → νν at 90% C.L. (1 d.o.f.) for m χ = 10 GeV assuming the NFW as dark matter density profile.

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Neutrino probes of the nature of light dark matter

Cited by 13 publications

References 102 publications

Tools for studying low-mass dark matter at neutrino detectors

Tools for studying low-mass dark matter at neutrino detectors

Probing the Dark Matter mass and nature with neutrinos

Indirect searches of Galactic diffuse dark matter in INO-MagICAL detector

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