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2–8 Jul 2023
Sun Yat-sen University Zhuhai Campus
Asia/Shanghai timezone

Supernova neutrinos as a precise probe of nuclear neutron skin

5 Jul 2023, 14:50
25m
A503 (Haiqin Building #6)

A503

Haiqin Building #6

Speaker

Dr Xurun Huang (The Chinese University of Hong Kong)

Description

A precise and model-independent determination of the neutron distribution radius $R_{\rm n}$ and thus the neutron skin thickness $R_{\rm skin}$ of atomic nuclei is of fundamental importance in nuclear physics, particle physics and astrophysics but remains a big challenge in terrestrial labs. We argue that the nearby core-collapse supernova (CCSN) in our Galaxy may render a neutrino flux with unprecedentedly high luminosity, offering perfect opportunity to determine the $R_{\rm n}$ and $R_{\rm skin}$ through the coherent elastic neutrino-nucleus scattering (CE$\nu$NS). We evaluate the potential of determining the $R_{\rm n}$ of lead (Pb) via CE$\nu$NS with the nearby CCSN neutrinos in the RES-NOVA project which is designed to hunt CCSN neutrinos using an array of archaeological Pb based cryogenic detectors. We find that an ultimate precision of $\sim 0.1 \%$ for the $R_{\rm n}$ ($\sim 0.006$ fm for the $R_{\rm skin}$) of Pb can be achieved via RES-NOVA in the most optimistic case that the CCSN explosion were to occur at a distance of $\sim 1 ~\rm{kpc}$ from the Earth.

Primary author

Dr Xurun Huang (The Chinese University of Hong Kong)

Co-author

Prof. Lie-Wen Chen (Shanghai Jiao Tong University)

Presentation materials