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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Effective Theories for QCD-like at TeV Scale

Author

  • Jie Lu
  • Johan Bijnens

Summary, in English

We study the Effective Field Theory of three QCD-like theories, which can be classified by having quarks in a complex, real or pseudo-real representations of the gauge group. The Lagrangians are written in a very similar way so that the calculations can be done using techniques from Chiral Perturbation Theory (ChPT). We calculated the vacuum-expectation-value, the mass and the decay constant of pseudo-Goldstone Bosons up to next-to-next-to leading order (NNLO) [1]. The various channels of general n flavour meson-meson scattering of the three theories are systematically studied and calculated up to NNLO [2]. We also calculated the vector, axial-vector, scalar, pseudo-scalar two-point functions and pseudo-scalar decay constant up NNLO order [3]. The analytic expressions of the S parameter for the three different QCD-like theories are obtained at TeV scale. Our results are useful for chiral extrapolation in lattice calculation on theory of strong dynamical and finite baryon density.

Department/s

  • Theoretical Particle Physics
  • Department of Astronomy and Theoretical Physics

Publishing year

2016-04-01

Language

English

Pages

1618-1623

Publication/Series

Nuclear and Particle Physics Proceedings

Volume

273-275

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • Chiral extrapolation
  • Chiral Lagrangian
  • Composite Models
  • Lattice Gauge Field Theories
  • Spontaneous Symmetry Breaking
  • Technicolor

Status

Published

ISBN/ISSN/Other

  • ISSN: 2405-6014