The Diffuse Supernova Neutrino Background (DSNB) is the collection of neutrinos emitted from all past core-collapse supernovae, and it has yet to be detected experimentally. An observation of the DSNB can probe the star formation history of the universe, the fraction of black hole-forming supernovae, and even novel neutrino physics phenomena. At present, the Super-Kamiokande (SK) water Cherenkov detector is the most sensitive experiment to detect the DSNB. Since 2020, it has loaded its tank with gadolinium to enhance the detection of neutron captures, which is a crucial step for identifying the DSNB signal. The latest results from the SK DSNB search were presented this summer at the Neutrino 2024 conference in Milan, Italy. Here, we present these results and give particular focus to the new atmospheric background reduction, the updated neutron tagging algorithms, the interpretation of the two parallel statistical approaches, and the challenges and prospects for the immediate future.
Dates:
Mercredi, 27 novembre, 2024 - 11:00 to 12:00
Localisation / Location:
APC
Salle / Local:
454A-Luc Valentin
- Séminaire
Nom/Prénom // Last name/First name:
Andrew Santos
Affiliation:
Laboratoire Leprince-Ringuet (LLR), Paris
Equipe(s) organisatrice(s) / Organizing team(s):
- Particules
- Théorie