Student seminars

The NEXT path to neutrino inverse hierarchy

by Mr. Javier Muñoz Vidal

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

1001-Primera-1-1-1 - Paterna. Seminario


Neutrino oscillations experiments carried out during the last few decades have shown that neutrinos have mass and mix, opening up a new field of physics beyond the SM. One way to accommodate these masses in the theory is that neutrinos could be Majorana particles that is, identical to their own antiparticles, as opposed to the rest of fermions, and violate the conservation of leptonic numbers. The most sensitive method to establish the nature of neutrinos is the search for a hypothetical and extremely rare nuclear transition called double beta decay without emission of neutrinos (0νββ). NEXT (Neutrino Experiment with a Xenon TPC) is a neutrinoless double-beta decay experiment that operates at the Canfranc Underground Laboratory (LSC). It is based on a novel detection concept for neutrinoless double-beta decay searches consisting in a Time Projection Chamber (TPC) filled with high-pressure gaseous xenon and with separated-function capabilities for calorimetry and tracking. During this seminar, the NEXT detector will be described, the assessment of all the relevant backgrounds and the reached sensitivity will be presented and finally, the evolution of NEXT detector to fully cover the neutrino range of masses corresponding to the inverse hierarchy will be succinctly outlined.
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