Zobrazeno 1 - 10
of 474
pro vyhledávání: '"Ibarra, Alejandro"'
Astronomical and cosmological observations indicate that dark matter should interact very weakly with the electromagnetic radiation. Nevertheless, the existence of such interactions is not precluded by observations nor by theoretical considerations.
Externí odkaz:
http://arxiv.org/abs/2408.15760
The invisible decay of cold dark matter into a slightly lighter dark sector particle on cosmological time-scales has been proposed as a solution to the $S_8$ tension. In this work we discuss the possible embedding of this scenario within a particle p
Externí odkaz:
http://arxiv.org/abs/2403.15543
Publikováno v:
JCAP01(2024)028
There is currently no evidence for a baryon asymmetry in our Universe. Instead, cosmological observations have only demonstrated the existence of a quark-antiquark asymmetry, which does not necessarily imply a baryon asymmetric Universe, since the ba
Externí odkaz:
http://arxiv.org/abs/2307.02592
We consider electrically neutral complex vector particles $V$ below the GeV mass scale that, from a low energy perspective, couple to the photon via higher dimensional form factor interactions. We derive ensuing astrophysical constraints by consideri
Externí odkaz:
http://arxiv.org/abs/2303.13643
Publikováno v:
JCAP 04 (2023) 026
In some scenarios, the dark matter particle predominantly scatters inelastically with the target, producing a heavier neutral particle in the final state. In this class of scenarios, the reach in parameter space of direct detection experiments is lim
Externí odkaz:
http://arxiv.org/abs/2301.00870
Asymmetric dark matter under certain conditions could form compact star-like objects, which can be searched either through gravitational lensing or by observation of gravitational waves from binaries involving such compact objects. In this paper we a
Externí odkaz:
http://arxiv.org/abs/2211.05845
Publikováno v:
Phys. Rev. D 107, 2023, 015027
We perform an effective field theory analysis to correlate the charged lepton flavor violating processes $\ell_i\to\ell_j\gamma\gamma$ and $\ell_i\to\ell_j\gamma$. Using the current upper bounds on the rate for $\ell_i\to\ell_j\gamma$, we derive mode
Externí odkaz:
http://arxiv.org/abs/2210.05703
Publikováno v:
JCAP 05 (2023) 057
The flux of high energy neutrinos and photons produced in a blazar could get attenuated when they propagate through the dark matter spike around the central black hole and the halo of the host galaxy. Using the observation by IceCube of a few high-en
Externí odkaz:
http://arxiv.org/abs/2209.06339
Using a new sample of extremely metal poor systems, the EMPRESS survey has recently reported a primordial helium abundance that is $3\sigma$ smaller than the prediction from the standard big bang nucleosynthesis (BBN) scenario. This measurement could
Externí odkaz:
http://arxiv.org/abs/2208.03201
Este projeto de pesquisa apresenta o desenvolvimento de protótipos de transmissores industriais de pressão do tipo diferencial piezoresistivo com saída analógica a dois fios 4-20 mA. Os dispositivos usam um DSSP (processador digital de sinal do s