Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série LPNHE
Domaines hep-ex
Date Lundi 27 Septembre 2021
Heure 14:00
Institut LPNHE
Salle Online
Nom de l'orateur Lasserre
Prenom de l'orateur Thierry
Addresse email de l'orateur
Institution de l'orateur CEA - IRFU
Titre Latest results from KATRIN on neutrino mass and the search for sterile neutrinos
Résumé I will present the latest results from the Karlsruhe Tritium Neutrino Experiment (KATRIN). KATRIN probes the effective mass of electron anti-neutrinos via a high-precision measurement of the &#946;-decay spectrum of tritium near its endpoint at 18.6 keV. In the first campaign, KATRIN established that the effective mass of neutrinos is <1.1 eV/c2 (90% CL). In the second physics campaign, the source activity was increased by a factor of 3.8 and the background was reduced by 25% compared to the first campaign. Combining the currently available KATRIN data, we find a new upper limit on the effective neutrino mass at <0.8 eV/c2 (90% CL). Following the neutrino mass run, the KATRIN/TRISTAN project will aim to detect the signature of a sterile keV neutrino by measuring the entire tritium beta decay spectrum using an enhanced KATRIN detection and readout system.
Numéro de preprint arXiv
Commentaires We will be using Zoom for this seminar; please contact the organizers at seminaires@lpnhe.in2p3.fr for more details
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