2022/11/18(Fri)
11:00 -12:00
五樓第一會議室 5F, 1st Meeting Room
視訊演講 Video Seminar [ Meeting Link / ID: 2516 360 8923 / Password: JxrPUaBP342 ]
Title
What can DUNE and JUNO detectors tell us about flavor transitions of galactic supernova neutrinos?
Speaker
林貴林教授 (國立陽明交通大學物理研究所) Prof. Guey-Lin Lin (Institute of Physics, National Yang Ming Chiao Tung University)Abstract
We present a method to verify MSW effect during the propagation of SN neutrinos from the SN core to the Earth. The non-MSW scenario to be distinguished from the MSW one is the incoherent flavor transition probability for neutrino propagation in the vacuum. Our approach involves studying time evolution of neutrino event rates in liquid Argon and liquid scintillation detectors. The former (latter) detector is sensitive to $ u_e$ ($ar{ u}_e$) flux which is a linear combination of $ u_e$ ($ar{ u}_e$) and $ u_{mu, au}$ ($ar{ u}_{mu, au}$) fluxes from the source with the weighting of each component dictated by the flavor transition mechanism. Using currently available simulations for SN neutrino emissions, the time evolution of $ u_e{ m Ar}$ and $ar{ u}_e$ IBD event rates and the corresponding cumulative event fractions are calculated up to $t=100~{ m ms}$ in DUNE and JUNO detectors, respectively. It is shown that the area under the cumulative time distribution curve from $t=0$ to $t=100~{ m ms}$ in each detector and their ratio can be used to discriminate different flavor transition scenarios of SN neutrinos.
Language
演講語言 (Language): in English
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