Programme

P.54 -- Poster, NCTP-43

Date: Wednesday, 1 August 2018

Time: 08:30 - 10:00

Unitary of neutrino mixing matrix

Nguyen Thi Kim Ha (1), Nguyen Thi Hong Van (2)

(1) Ho Chi Minh University of Science, and Institute of Physics and Institute For Interdisciplinary Research Science and Education (IFIRSE), (2) Institute of Physics (IOP) and Institute For Interdisciplinary Research Science and Education (IFIRSE)

Neutrinos are neutral leptons which exist three types of neutrinos (electron neutrinos, muon neutrino and tau neutrino). These classifications are referred to as a neutrino’s “flavor”. The flavor of a neutrino is determined as a superposition of the mass eigenstates. The type of the flavor oscillation is called neutrino oscillation that occurs when neutrinos have mass and non-zero mixing. Neutrino mixing is governed by the PMNS mixing matrix which relates the mass eigenstates to the flavor eigenstates. The PMNS mixing matrix is constructed as the product of three independent rotations (a unitary matrix with three mixing angles and one phase). From that, we describe the numbers by showing in a graphical form called the unitarity triangle to give rise to CP violation. At the same time, we calculate the four parameters of mixing matrix to draw unitary triangle. The area of the triangle is a measure of the amount of CP violation caused by the weak force.

Presenter: Nguyen Thi Kim Ha