Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Masip, Manuel"'
Heavy lepton singlets $N$ slightly mixed with a standard neutrino $\nu_\ell$ are usually searched for at the LHC in the trilepton plus $p_{\rm T}^{\rm miss}$ channel: $pp \to W^+ \to \ell^+ N$ with $N\to \ell^- W^+ \to \ell^- \ell'^+ \nu$. We show th
Externí odkaz:
http://arxiv.org/abs/2407.04340
We define a minimal model of dark matter with a fermion singlet $\chi$ coupled to the visible sector through the Higgs portal and with a heavy Dirac neutrino $N$ that opens the annihilation channel $\chi \chi \to N \nu$. The model provides the observ
Externí odkaz:
http://arxiv.org/abs/2309.00374
We investigate how the resonant conversion at a temperature $\bar{T}=25$-$65$ keV of a fraction of the CMB photons into an axion-like majoron affects BBN. The scenario, that assumes the presence of a primordial magnetic field and the subsequent decay
Externí odkaz:
http://arxiv.org/abs/2305.16838
We discuss the electromagnetic collisions of high energy protons, pions and kaons with atmospheric nuclei. In particular, we use the equivalent photon approximation to estimate (i) the diffractive collisions where the projectile scatters inelasticall
Externí odkaz:
http://arxiv.org/abs/2303.16042
Publikováno v:
Astrophys.J. 941 (2022) 1, 86 Astrophys.J. 941 (2022) 1, 86 Astrophys. J. 941 (2022) 1, 86
High energy cosmic rays "illuminate" the Sun and produce an image that could be observed in up to five different channels: a cosmic ray shadow (whose energy dependence has been studied by HAWC); a gamma ray flux (observed at $E\le 200$ GeV by Fermi-L
Externí odkaz:
http://arxiv.org/abs/2206.00964
We propose a singlet majoron model that defines an inverse seesaw mechanism in the $\nu$ sector. The majoron $\phi$ has a mass $m_\phi\approx 0.5$ eV and a coupling to the $\tau$ lepton similar to the one to neutrinos. In the early universe it is ini
Externí odkaz:
http://arxiv.org/abs/2109.07336
The atmospheric neutrino flux includes a component from the prompt decay of charmed hadrons that becomes significant only at $E\ge 10$ TeV. At these energies, however, the diffuse flux of cosmic neutrinos discovered by IceCube seems to be larger than
Externí odkaz:
http://arxiv.org/abs/2106.01212
Autor:
Illana, José I., Masip, Manuel
In scenarios with extra dimensions the gravitational interaction may become strong at TeV energies. This could modify the $\nu$$N$ cross section and imply distinct signals at neutrino telescopes. In particular, cosmogenic neutrinos of $E\approx 10^9$
Externí odkaz:
http://arxiv.org/abs/2001.05195
Autor:
Gutiérrez, Miguel, Masip, Manuel
High energy cosmic rays reach the surface of the Sun and start showers with thousands of secondary particles. Most of them will be absorbed by the Sun, but a fraction of the neutral ones will escape and reach the Earth. Here we incorporate a new ingr
Externí odkaz:
http://arxiv.org/abs/1911.07530
The production of very high energy muons inside an extensive air shower is observable at $\nu$ telescopes and sensitive to the composition of the primary cosmic ray. Here we discuss five different sources of these muons: pion and kaon decays; charmed
Externí odkaz:
http://arxiv.org/abs/1904.12547