Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Fortes, A. C."'
Dark matter Annihilation in the Most Luminous and the Most Massive Ultracompact Dwarf Galaxies (UCD)
In this paper, we explore the potential astrophysical signatures of dark matter (DM) annihilations in ultra-compact dwarf galaxies (UCDs) considering two of the richest known galaxy clusters within 100 million light-years, nominally, Virgo and Fornax
Externí odkaz:
http://arxiv.org/abs/2003.02383
Here we investigate the possibility that some globular clusters (GCs) harbor intermediate mass black holes (BH) in their centers and are also embedded in a low-mass dark matter (DM) halo. Up to date, there is no evidence on whether or not GCs have DM
Externí odkaz:
http://arxiv.org/abs/1912.12262
We give theoretical predictions for the radio emission of a dark matter candidate annihilating into 2-lepton and 4-lepton final states. We then compare our results with the known radio measurements of the sky temperature as a function of the frequenc
Externí odkaz:
http://arxiv.org/abs/1907.13184
We consider an extension of the standard model with three Higgs doublet model and $S_3\times \mathbb{Z}_2$ discrete symmetries. Two of the scalar doublets are inert due to the $\mathbb{Z}_2$ symmetry. We have calculated all the mass spectra in the sc
Externí odkaz:
http://arxiv.org/abs/1705.09414
We consider here three dark matter models with the gauge symmetry of the standard model plus an additional local $U(1)_D$ factor. One model is truly secluded and the other two models begin flipped, but end up secluded. All of these models include one
Externí odkaz:
http://arxiv.org/abs/1703.05275
Publikováno v:
Phys. Rev. D 93, 103510 (2016)
We explore a novel flavor structure in the interactions of dark matter with the Standard Model. We consider theories in which both the dark matter candidate, and the particles that mediate its interactions with the Standard Model fields, carry flavor
Externí odkaz:
http://arxiv.org/abs/1511.06293
Autor:
Fortes, E. C. F. S., Nussinov, Shmuel
Publikováno v:
Phys. Rev. D 93, 014023 (2016)
The anomalously large experimentally measured ratios of the semitauonic decay $B\rightarrow D^{(*)} +\tau+\nu$ and the corresponding semileptonic $B\rightarrow D^{*} +\l+\bar{\nu}_l$ disagree with the predictions of the standard E.W + QCD model(S.M).
Externí odkaz:
http://arxiv.org/abs/1508.04463
Publikováno v:
Astroparticle Phys. 74 (2016) 87
We propose to investigate a secluded WIMP dark matter model consisting of neutral fermions as the dark matter candidate and a Proca-Wentzel (PW) field as a mediator. In the model that we consider here, dark matter WIMPs interact with standard model (
Externí odkaz:
http://arxiv.org/abs/1503.08220
We consider the decays $h\to\gamma\gamma,\gamma Z$ in the context of an extension of the standard model with two inert doublets and an additional $S_3$ symmetry. This model has contributions for these processes through new charged scalar-loops. Compa
Externí odkaz:
http://arxiv.org/abs/1408.0780
We study a two scalar inert doublet model (IDMS$_3$) which is stabilized by a $S_3$ symmetry. We consider two scenarios: i) two of the scalars in each charged sector are mass degenerated due to a residual $Z_2$ symmetry, ii) there is no mass degenera
Externí odkaz:
http://arxiv.org/abs/1407.4749