Updated limits on extra dimensions through torsion and LHC data

TL;DR

This paper reinterprets LHC data on four-fermion interactions within models with extra dimensions, setting new bounds on their size by considering torsion-induced effects in gravity.

Contribution

It provides updated constraints on the size of extra dimensions by linking torsion-induced four-fermion interactions to LHC experimental limits.

Findings

For n=2, limits are comparable to existing bounds.

For n≥3, the volume of extra dimensions is strongly constrained.

Enhanced four-fermion interactions tighten bounds on extra dimensions.

Abstract

It is well known that inclusion of torsion in the gravitational formalism, leads to four-fermion interactions. Although the coupling constant of this interaction is strongly suppressed in four dimensions, its value is enhanced in models with $n$ extra dimensions. In this context, we reinterpret the recent limits established by LHC experiments to four-fermion contact interactions, to set bounds on the size of the extra dimensions. For $n=2$, the limits are comparable to those in the literature, while for $n\ge 3$ the volume of the extra dimensions is strongly constrained.