First indication of solar B8 neutrinos through CEvNS in PandaX-4T

by Prof. Ning Zhou (Shanghai Jiao Tong University (CN))

Thursday 26 Sept 2024, 16:00 → 18:00 Australia/Sydney

PandaX experiment at the China Jinping Underground Laboratory uses xenon as target to detect weak and rare physics signals, including dark matter and neutrinoless double-beta decay. We are running a new generation detector with 4-tonne liquid xenon in the sensitive volume, PandaX-4T. 

Recently the PandaX-4T experiment has, for the first time, found indication of coherent elastic neutrino-nucleus scattering (CEvNS) events induced by solar boron-8 neutrinos, with a significance of 2.64 sigma. It is also the first indication of solar neutrino “fog” in a dark matter direct detection experiment. In this talk, I will show the details of this low-energy threshold search and the next plan of PandaX experiment.