Phenomenology of TeV Little String Theory from Holography

TL;DR

This paper explores the unique graviton spectrum predicted by TeV Little String Theory's holographic dual, highlighting its distinctive TeV-scale mass gap and narrow resonances, which could be observed at the LHC.

Contribution

It provides a detailed analysis of the graviton phenomenology in TeV Little String Theory using holography, revealing a distinctive spectrum with a TeV mass gap and narrow resonances.

Findings

Unique KK graviton spectrum with TeV mass gap

Narrow resonances separated by ~30 GeV

Distinctive LHC signatures compared to other models

Abstract

We study the graviton phenomenology of TeV Little String Theory by exploiting its holographic gravity dual five-dimensional theory. This dual corresponds to a linear dilaton background with a large bulk that constrains the Standard Model fields on the boundary of space. The linear dilaton geometry produces a unique Kaluza-Klein graviton spectrum that exhibits a ~ TeV mass gap followed by a near continuum of narrow resonances that are separated from each other by only ~ 30 GeV. Resonant production of these particles at the LHC is the signature of this framework that distinguishes it from large extra dimensions where the KK states are almost a continuum with no mass gap, and warped models where the states are separated by a TeV.