English

Torsion in Extra Dimensions and One-Loop Observables

High Energy Physics - Phenomenology 2014-07-07 v2 General Relativity and Quantum Cosmology High Energy Physics - Theory

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.

Keywords

Cite

@article{arxiv.1405.0397,
  title  = {Torsion in Extra Dimensions and One-Loop Observables},
  author = {Oscar Castillo-Felisola and Cristobal Corral and Sergey Kovalenko and Ivan Schmidt},
  journal= {arXiv preprint arXiv:1405.0397},
  year   = {2014}
}

Comments

7 pages and 2 figures. Accepted for publication in Phys. Rev. D

R2 v1 2026-06-22T04:04:41.271Z