Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines astro-ph
Date Lundi 2 Novembre 2020
Heure 14:00
Institut LPNHE
Salle Amphi Charpak + Online
Nom de l'orateur El Hedri
Prenom de l'orateur Sonia
Addresse email de l'orateur
Institution de l'orateur LLR
Titre The Diffuse Supernova Neutrino Background in Super-Kamiokande
Résumé Neutrinos have played a key role in astrophysics, from the characterization of nuclear fusion processes in the Sun to the observation of supernova SN1987A and multiple extragalactic events. The Super-Kamiokande experiment has played a major part in past in these astrophysical studies by investigating low energy O(10)~MeV neutrinos, and currently exhibits the best sensitivity to the diffuse neutrino background from distant supernovae. Discovering and characterizing this elusive signal would represent a major breakthrough in astrophysics but also requires state-of-the-art background removal techniques targeting cosmic muon spallation and atmospheric neutrinos. Even in case of an observation, extracting meaningful information about the mechanism of core-collapse supernovae and the history of star formation from a single neutrino spectrum will be a significant challenge. Here, I present an overview of the search for the diffuse supernova neutrino background in Super-Kamiokande and discuss how this signal can be characterized in future experiments, notably in the SuperK-Gd upgrade.
Numéro de preprint arXiv
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