Programme

P.22 -- Poster, VCTP-48

Date: Tuesday, 1 August 2023

Time: 08:30 - 10:00

Revisiting the degeneracy in the neutrino oscillation parameters

Nguyen Thi Hien (1,2), Cao Van Son (2), Phan To Quyen (2,3)

(1) University of Science and Technology of Ha Noi (2) Institute For Interdisciplinary Research in Science and Education (IFIRSE) (3) Graduate University of Science and Technology

Neutrino massiveness and leptonic mixing are solely discernible evidence for new physics beyond the Standard Model of elementary particles, as revealed by the well-established quantum mechanical phenomenon known as neutrino oscillation. The neutrino experiment typically measures oscillation probabilities as a function of various parameters, which include three mixing angles, one CP-violation phase, and two mass-squared splittings. The problem is that extracting parameters from probability is not unique and, due to parameter degeneracy, can result in numerous solutions. In this work, we look at the iso-probability curves to revisit the degeneracy among neutrino oscillation parameters. We then derive analytical formulas in order to represent these curves. We also will discuss the application of these analytical findings.

Presenter: Nguyễn Thị Hiền