Particle physics is a basic science which studies the smallest elements of matter and the properties of their interactions, deepening mankind’s knowledge of the microcosmos.τ-Charm physics is an important branch of ...Particle physics is a basic science which studies the smallest elements of matter and the properties of their interactions, deepening mankind’s knowledge of the microcosmos.τ-Charm physics is an important branch of elementary-particle physics.Systematic studies on the radiative decay,strong decay and weak decay of elementary particles will resolve and clarify many problems in the discipline, testing and deveploping the Standard Model of elementary particles.For example,what is the展开更多
We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and positron beams are polarized. By calculating the polarization of the final-state particle...We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and positron beams are polarized. By calculating the polarization of the final-state particles, we discuss in detail the effect due to the produced particle masses in the T-charm energy region at BEPC/BES, and also compare the effect with that at the B-factory. Such a study is useful for the design of possible polarization investigation at the BEPC/BES facility and the B-factory.展开更多
文摘Particle physics is a basic science which studies the smallest elements of matter and the properties of their interactions, deepening mankind’s knowledge of the microcosmos.τ-Charm physics is an important branch of elementary-particle physics.Systematic studies on the radiative decay,strong decay and weak decay of elementary particles will resolve and clarify many problems in the discipline, testing and deveploping the Standard Model of elementary particles.For example,what is the
基金Supported by National Natural Science Foundation of China(11021092, 10975003, 11035003, 11120101004)Research Fund for the Doctoral Program of Higher Education(China)
文摘We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and positron beams are polarized. By calculating the polarization of the final-state particles, we discuss in detail the effect due to the produced particle masses in the T-charm energy region at BEPC/BES, and also compare the effect with that at the B-factory. Such a study is useful for the design of possible polarization investigation at the BEPC/BES facility and the B-factory.
