Descripción
Observations of high-energy astrophysical neutrinos in IceCube have opened the door to multi-messenger astronomy, by way of which questions in particle physics could be explored collaboratively between IceCube and optical experiments such as Fermi-LAT. However, the origin of these astrophysical neutrinos is still largely unknown. Among the tensions that still need to be resolved, for example,...
An anomalous flux of neutrinos produced in hypothetical annihilations or decays of dark matter inside a source would produce a signal observable with neutrino telescopes. As suggested by observations, a conspicuous amount of dark matter is believed to accumulate in the Centre of our Galaxy, which is in neat visibility for the Mediterranean underwater telescopes ANTARES and KM3NeT. Searches...
Neutrino telescopes, such as IceCube, can be used to conduct indirect dark matter searches. A common assumption is that dark matter consists of Weakly Interacting Massive Particles (WIMPs), which are expected to produce standard model particles when they annihilate or decay. IceCube could then detect the neutrinos generated by these standard model particles. Since the Milky Way is expected to...
The existence of dark matter (DM) has been well-established by repeated observations probing many length scales. Although DM is expected to comprise the majority of the current matter content of the Universe, its nature remains unknown. Weakly interacting massive particles (WIMPs) are a class of DM that arise naturally from Standard Model (SM) extensions. Generically WIMPs have a non-zero...
The IceCube neutrino observatory consists of 5160 photomultiplier-tubes spread among 86 vertical strings making a total
detector volume of more than a cubic kilometer. It detects neutrinos via Cherenkov light of
charged relativistic particles from neutrino interactions with the detector volume. In this
analysis we search for secluded dark matter which annihilates into metastable mediator...
Neutrinos have been proved to be unique messengers in the understanding of fundamental physics processes, particularly in the astrophysics field. Also, they are thought to be able to provide hints of physics beyond the Standard Model, like Dark Matter models, among which those based on Weakly Interacting Massive Particles (WIMPs) physics. This kind of Dark Matter can scatter off Standard...
Cosmic rays interact with nucleons in the solar atmosphere to create pions, kaons, and other particles which decay to produce a flux of high-energy neutrinos. Although this flux is predicted in the literature, it has yet to be observed experimentally. This flux is an irreducible background for current solar WIMP searches. The detection of these neutrinos would improve the sensitivity floor for...
Strange quark matter (SQM) is a hypothetical type of matter composed of almost equal quantities of up, down and strange quarks. Massive SQM particles are called nuclearites. Nuclearites with masses greater than $10^{13}$ GeV and velocities of about 250 km/s (typical galactic velocities) could reach the Earth and interact with atoms and molecules of sea water within the sensitive volume of the...
ANTARES is a Cherenkov underwater neutrino telescope operating in the Mediterranean Sea since 2008 in its full configuration. Even though optimised for the search of cosmic neutrinos, this telescope is also sensitive to nuclearites of strange matter.
We discuss here the possible detection of non-relativistic down-going nuclearites with the ANTARES telescope and present the first results of an...
The present study is an updated search for magnetic monopoles using data taken with the ANTARES neutrino telescope over a period of 10 years (January 2008 to December 2017). In accordance with some grand unification theories, magnetic monopoles could have been created during the phase of symmetry breaking in the early Universe, and accelerated by galactic magnetic fields. As a consequence of...
Magnetic monopoles are hypothetical particles carrying magnetic charge. They are predicted to exist in most extensions of the Standard Model of particle physics. A wide range of masses is allowed for magnetic monopoles, leading to a broad speed range for a hypothetical flux of these relics of the Big Bang. A magnetic monopole passing through IceCube would produce light through several...
