Theoretical Particle Physics
Publications
Torsion in extra dimensions and one-loop observables
Publicaciones
Torsion in extra dimensions and one-loop observables
Research areas:
Física Teórica de Partículas
Year:
2014
Type of Publication:
In Proceeding
Authors:
- Cristobal Corral
- Ivan Schmidt
- Oscar Castillo-Felisola
- Sergey Kovalenko
Journal:
Phys.Rev.
Volume:
D90
Pages:
7
Abstract:
We study gravity with torsion in extra dimensions and derive an effective four-dimensional theory containing four-fermion contact operators at the fundamental scale of quantum gravity in the TeV range. These operators may have an impact on the low-energy observables and can manifest themselves or can be constrained in precision measurements. We calculate possible contributions of these operators to some observables at the one-loop level. We show that the existing precision data on the lepton decay mode of Z boson set limits on the fundamental scale of the gravity and compactification radius, which are more stringent than the limits previously derived in the literature.