Detection of branon dark matter with gamma ray telescopes

Cembranos, J. A. R.; Cruz-Dombriz, Álvaro de la; Gammaldi, Viviana; Maroto, Antonio L.

doi:10.1103/physrevd.85.043505

Cited by 39 publications

(28 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, interestingly, this unID slightly prefers a fit to a "Cutoff Power Law" instead of a "Simple Power Law" [35], which is a parametric form that better reproduces a typical DM annihilation spectrum [22,23]. Heavy WIMPs are well motivated [55][56][57] and, probably, favoured in the light of current DM constraints in the usual σv (velocity-averaged annihilation cross section) vs. m χ (WIMP mass) parameter space: IACTs are still far from being able to probe the thermal relic cross section values [58] for large, TeV WIMP masses, while for much lighter, O(GeV) masses there are already robust and strong constraints, e.g., [23,59].…”

Section: Hwc J1040+308 As a Dm Subhalo Candidatementioning

confidence: 99%

Constraints to Dark Matter Annihilation from High-Latitude HAWC Unidentified Sources

Coronado-Blázquez

2019

Galaxies

View full text Add to dashboard Cite

The ΛCDM cosmological framework predicts the existence of thousands of subhalos in our own Galaxy not massive enough to retain baryons and become visible. Yet, some of them may outshine in gamma rays provided that the dark matter is made of weakly interacting massive particles (WIMPs), that would self-annihilate and would appear as unidentified gamma-ray sources (unIDs) in gamma-ray catalogs. Indeed, unIDs have proven to be competitive targets for dark matter searches with gamma rays. In this work, we focus on the three high-latitude (|b| ≥ 10 o ) sources present in the 2HWC catalog of the High Altitude Water Cherenkov (HAWC) observatory with no clear associations at other wavelenghts. Indeed, only one of these sources, 2HWC J1040+308, is found to be above the HAWC detection threshold when considering 760 days of data, i.e., a factor 1.5 more exposure time than in the original 2HWC catalog. Other gamma-ray instruments such as Fermi-LAT or VERITAS at lower energies do not detect the source. Also, this unID is reported as spatially extended, making it even more interesting in a dark matter search context. While waiting for more data that may shed further light on the nature of this source, we set competitive upper limits on the annihilation cross section by comparing this HAWC unID to expectations based on state-of-the-art N-body cosmological simulations of the Galactic subhalo population. We find these constraints to be particularly competitive for heavy WIMPs, i.e., masses above ∼ 25 (40) TeV in the case of the bb (τ + τ − ) annihilation channel, reaching velocity-averaged cross section values of 2 · 10 −25 (5 · 10 −25 ) cm 3 s −1 . Although far from testing the thermal relic cross section value, the obtained limits are independent and nicely complementary to those from radically different DM analyses and targets, demonstrating once again the high potential of this DM search approach.

show abstract

Section: Hwc J1040+308 As a Dm Subhalo Candidatementioning

confidence: 99%

Constraints to Dark Matter Annihilation from High-Latitude HAWC Unidentified Sources

Coronado-Blázquez

2019

Galaxies

View full text Add to dashboard Cite

show abstract

“…Additionally, in a different braneworld model the main phenomenology associated with disformal scalars coupled to the Standard Model fields were considered, and it was argued that these fields can serve as natural dark matter candidates since they are massive and weakly coupled [21]. Finally, in [22] the possible detection of branon dark matter in experimental data was discussed. For reviews on braneworld models which produce cosmological acceleration see [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Current density and conductivity through modified gravity in the graphene with defects

Sepehri

Pinčák

Bamba

et al. 2017

Int. J. Mod. Phys. D

View full text Add to dashboard Cite

We propose a model describing the evolution of the free electron current density in graphene. Based on the concept of Mp-branes, we perform the analysis using the difference between curvatures of parallel and antiparallel spins. In such a framework an effective graviton emerges in the form of gauge field exchange between electrons. In a plain graphene system, the curvatures produced by both kinds of spins neutralize each other. However, in the presence of defects, the inequality between curvatures leads to the emergence of current density, modified gravity and conductivity. Depending on the type of the defects, the resulting current density can be negative or positive.

show abstract

“…On the one hand, DM particles can be produced in laboratory experiments such as high-energy particle colliders [3]. On the other hand, local DM can be detected in a direct or indirect way [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Reliability of Monte Carlo event generators for gamma-ray dark matter searches

Cembranos

Cruz-Dombriz

Gammaldi

et al. 2013

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract:We study the differences in the gamma-ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all the studied channels, the intrinsic differences between them are shown to be significative and may play an important role in misunderstanding dark matter signals.

show abstract

Detection of branon dark matter with gamma ray telescopes

Cited by 39 publications

References 77 publications

Constraints to Dark Matter Annihilation from High-Latitude HAWC Unidentified Sources

Constraints to Dark Matter Annihilation from High-Latitude HAWC Unidentified Sources

Current density and conductivity through modified gravity in the graphene with defects

Reliability of Monte Carlo event generators for gamma-ray dark matter searches

Contact Info

Product

Resources

About