Planck-scale effects on WIMP dark matter

Boucenna, Sofiane M.; Valle, J. W. F.; Lineros, Roberto A.

doi:10.3389/fphy.2013.00034

Cited by 14 publications

(15 citation statements)

References 60 publications

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“…In the case of DM particles, there is no such correspondence based on fundamental symmetries. Therefore DM particles can well be stable on cosmological distance scales, with lifetimes much longer than the age of the universe (13.8 Gyr = 4.56 × 10 17 sec) (see [2,3] for a recent discussion). Such a general requirement should be quantified with no prejudice to current observations, as it has been * baring@rice.edu † ghoshtatha@neo.tamu.edu ‡ queiroz@mpi-hd.mpg.edu § kusinha@syr.edu in the context of extragalactic background radiation (EGRB) [4][5][6][7][8], Galaxy Clusters [9][10][11], anti-proton [12][13][14] and x-ray data [15], the Cosmic Microwave Background [2,16] and optimized targets using Fermi-LAT data [17].…”

Section: Introductionmentioning

confidence: 99%

New limits on the dark matter lifetime from dwarf spheroidal galaxies using Fermi-LAT

et al. 2016

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Dwarf spheroidal galaxies (dSphs) are promising targets for the indirect detection of dark matter through gamma-ray emission due to their proximity, lack of astrophysical backgrounds and high dark matter density. They are often used to place restrictive bounds on the dark matter annihilation cross section. In this paper, we analyze six years of Fermi-LAT gamma-ray data from 19 dSphs that are satellites of the Milky Way, and derive from a stacked analysis of 15 dSphs, robust 95% confidence level lower limits on the dark matter lifetime for several decay channels and dark matter masses between ∼ 1 GeV and 10 TeV. Our findings are based on a bin-by-bin maximum likelihood analysis treating the J-factor as a nuisance parameter using PASS 8 event-class. Our constraints from this ensemble are among the most stringent and solid in the literature, and competitive with existing ones coming from the extragalactic gamma-ray background, galaxy clusters, AMS-02 cosmic ray data, Super-K and ICECUBE neutrino data, while rather insensitive to systematic uncertainties. In particular, among gamma-ray searches, we improve existing limits for dark matter decaying intobb (µ + µ − ) for DM masses below ∼ 30 (200) GeV, demonstrating that dSphs are compelling targets for constraining dark matter decay lifetimes.

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Section: Introductionmentioning

confidence: 99%

New limits on the dark matter lifetime from dwarf spheroidal galaxies using Fermi-LAT

et al. 2016

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“…A stronger bound μ < 10 −9 eV can be obtained in the context of the decaying DM [28][29][30]. Notably, switching off the soft μ term does not affect the neutrino mass diagram but makes the 0 state a viable DM candidate.…”

Section: Majorana Quintuplet In the Broken Z 2 Scenariomentioning

confidence: 95%

ScotogenicRνMDMat three-loop level

2015

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We propose a model in which the radiative neutrino (Rν) masses are induced by fermion quintuplet and scalar septuplet fields from the minimal-dark-matter (MDM) setup. In conjunction with the 2HDM fields, on top of which our model is built, these hypercharge zero fields and additional scalar quintuplet lead to an accidental DM-protecting Z 2 symmetry and establish the RνMDM model at the three-loop level. We assess the potential for discovery of quintuplet fermions on present and future pp colliders.

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“…The usual mechanisms of breaking a discrete symmetry, which might be an intrinsic gauged discrete symmetry of the theory or externally imposed upon it, are known to result in cosmological domain wall problem. A natural resolution of the domain wall problem emerges if the discrete symmetry breaking is assisted by gravity or Planck scale [46][47][48][60][61][62].…”

Section: Dynamical Generation Of Rhν-dm Mixingmentioning

confidence: 99%

“…Over the years implementation of gravitational effect has been found to be a very efficient mechanism in breaking all kinds of global symmetries, continuous or discrete [46][47][48][60][61][62][63][64], without causing cosmological domain wall problem [47,48,65] while at the same time predicting new interesting physical phenomena such as Majoron as scalar dark matter [60,61,63]. Whereas no dynamical explanation has been provided for the origin of N-Σ F mixing [58], in this work we further show how the three small mixings in our case originate from gravity assisted matter parity discrete symmetry breaking [60,61] without causing cosmological domain wall problem [47,48,65].…”

Section: Introductionmentioning

confidence: 99%

Matter parity violating dark matter decay in minimal SO(10), unification, vacuum stability and verifiable proton decay

Sahoo¹,

Parida²,

Chakraborty³

2019

Nuclear Physics B

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In direct breaking of non-supersymmetric SO(10) to the standard model, we investigate the possibility that dark matter (DM) decaying through its mixing with right-handed neutrino (RHν) produces high energy IceCube neutrinos having type-I seesaw masses. Instead of one universal mixing and one common heavy RHν mass proposed in a recent standard model extension, we find that underlying quark-lepton symmetry resulting in naturally hierarchical RHν masses predict a separate mixing with each of them. We determine these mixings from the seesaw prediction of the DM decay rates into the light neutrino flavors. We further show that these mixings originate from Planck-scale assisted spontaneously broken matter parity needed to resolve the associated cosmological domain wall problem. This leads to the prediction of a new LHC accessible matter-parity odd Higgs scalar which also completes vacuum stability in the Higgs potential for its mass M χ S 177 GeV. We have also discussed realization of relic density of decaying dark matter in relation to flux of IceCube neutrinos. Two separate minimal SO(10) models are further noted to predict such dark matter dynamics where a single scalar submultiplet from 126 † H or 210 H of intermediate mass achieves precision gauge coupling unification. Despite the presence of two large Higgs representations and the fermionic dark matter host, 45 F , experimentally accessible proton lifetimes are also predicted with reduced uncertainties. †

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Planck-scale effects on WIMP dark matter

Cited by 14 publications

References 60 publications

New limits on the dark matter lifetime from dwarf spheroidal galaxies using Fermi-LAT

New limits on the dark matter lifetime from dwarf spheroidal galaxies using Fermi-LAT

ScotogenicRνMDMat three-loop level

Matter parity violating dark matter decay in minimal SO(10), unification, vacuum stability and verifiable proton decay

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