Development of electroweak interaction theory based on electron-positron scattering

Authors

  • Yulia N. Chudnova Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Tatiana V. Shishkina Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

Keywords:

linear colliders, Standard Model, electron-positron collisions, production cross section

Abstract

The programs of research on linear colliders of a new generation are considered. The analytical Lorentz invariant calculation of the amplitudes and squares of matrix elements of the process of the muon antimuon pair generation as a result of the electron-positron annihilation at high energies is performed on the basis of Feynman diagram technique. It is shown that taking into account the weak interaction in the calculation of this process is necessary even in the lowest order of the perturbation theory. Numerical analysis of the differential and total cross sections of the process, as well as the forward-backward asymmetry, taking into account the decay width massive neutral gauge boson for various interaction energies and cutoff angles, is performed. The ultrarelativistic approximation has been examinedd. The last one effectively describes the cross sections of the process at energies of new generation linear colliders. The opportunity of fermions pair production as a result of electron-positron annihilation are analysed both for investigation the parameters and structure of the Standard Model of the electroweak interaction and for development of alternative non-minimal gauge models.

Author Biographies

  • Yulia N. Chudnova, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

    student at the faculty of physics

  • Tatiana V. Shishkina, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

    doctor of science (physics and mathematics), full professor; professor at the department of theoretical physics and astrophysics, faculty of physics

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Published

2023-01-31

Issue

No. 1 (2023): Journal of the Belarusian State University. Physics

Section

Atomic Nucleus and Elementary Particle Physics

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How to Cite

(1)
Chudnova, Y. N.; Shishkina, T. V. Development of Electroweak Interaction Theory Based on Electron-Positron Scattering. Журнал Белорусского государственного университета. Физика 2023, No. 1, 43–54. https://doi.org/10.33581/2520-2243-2023-1-43–54.
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