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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.

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