# Johan Bijnens

Professor

## Effective Theories for QCD-like at TeV Scale

Author

## 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 - Undergoing reorganization
- Department of Astronomy and Theoretical Physics - Undergoing reorganization

Publishing year

2016-04-01

Language

English

Pages

1618-1623

Publication/Series

Nuclear and Particle Physics Proceedings

Volume

273-275

Links

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