Elementary particle theory

In 1949, Tsung-Dao Lee published his first paper, proposed the universal Fermi weak interaction, predicted the existence of an intermediate field (i.e. intermediate boson), and contributed to the establishment of weak interaction. [1]

In 1956, Tsung-Dao Lee cooperated with Chen-Ning Yang to raise the suspects of parity conservation under weak interaction and made a significant improvement on the theory of particle physics [2].

Tsung-Dao Lee proposed the two-component neutrino theory,  analysed the role of high-energy neutrinos, and influenced the direction of theoretical and experimental research in this field for more than 20 years [3]

Tsung-Dao Lee introduced the phase factor which violates  time-reversal invariance and established the interrelationships among  neutrino mapping matrix, quark CKM matrix and the mass of light leptons and quarks. [5] Subsequently, he proposed the concept of Timeon . [6]