Neutrinos

Reconstruction of neutrino events in the MicroBooNE detector

MicroBooNE is a Liquid Argon Time Projection Chamber (LArTPC) neutrino experiment on the Booster Neutrino Beamline at the Fermi National Accelerator Laboratory, with an 85-tonne active mass.
One of MicroBooNE’s primary physics goals is to investigate the excess of electron neutrino events seen by MiniBooNE in the [200-600] MeV range.
MicroBooNE will constrain the intrinsic electron neutrino component of the beam by measuring the muon neutrino spectrum.

Seminar Thibaut Houdy: KATRIN, from neutrino mass to Dark Matter

The KATRIN (Karlsruhe Tritium Neutrino) experiment investigates the energetic endpoint of the tritium beta-decay spectrum to determine the effective mass of the electron anti-neutrino. The collaboration reported its first neutrino mass result in fall 2019. Its unprecedented tritium source luminosity and spectroscopic quality make it a unique instrument to also search for physics beyond the standard model such as eV or keV sterile neutrinos.

Neutrino properties from atmospheric neutrinos from a KM3NeT/ORCA near-future perspective

Atmospheric neutrino experiments measure the oscillations of neutrinos produced in the atmosphere by default assuming unitary mixing of electron-, muon-, and tau-neutrinos. The task-list for the upcoming years involves: (a) Measure the atmospheric mixing parameters with increased precision. (b) Determine the known unknowns in the framework of three neutrino flavours: ordering of neutrino masses and CP-violation.

Updated Neutrino and Antineutrino Results from NOvA

The discovery of the third neutrino mixing angle, theta13, in 2012 opened a door to discovering if CP symmetry is violated in the lepton sector, and the ordering of the neutrino mass eigenstates. NOvA is exploring this new landscape by measuring the appearance of electron (anti)neutrinos in a beam of muon (anti)neutrinos. Recently we have obtained the first evidence for electron antineutrinos appearing in a beam of muon antineutrinos. With a baseline of 810 km NOvA has nearly triple the matter effect of T2K and sensitivity to the mass hierarchy.

Physics and status of Hyper-Kamiokande

Hyper-Kamiokande, the next generation of water Cherenkov neutrino observatory, will open fascinating new window on the universe, including the search for Grand Unified Theory through proton decay, neutrino astronomy, and determination of the CP violation in the lepton sector. In the first part of this seminar, we will present some questions remaining in these various physics domains, as well as the answers we may be able to provide with Hyper-Kamiokande.

Searches for dark matter with the DarkSide experiment: results and perspectives

A big-bang relic population of WIMPs remains one of the most favored candidates for the yet-to-be-discovered dark matter. DarkSide uses dual-phase liquid argon (LAr) Time Projection Chambers (TPCs) to search for WIMPs. The current phase of the experiment, DarkSide-50, consists in a 50-kg-active-mass TPC filled with argon from an underground source. I will discuss in detail its recent results, namely a background free search for high-mass WIMPs (>10 GeV/c2) and the world-leading exclusion limit for WIMPs with mass between 2 and 6 GeV/c2.

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