Gravitational Imprints from Heavy Kaluza-Klein Resonances

25 Aug 2021, 16:20
20m
ZR6

ZR6

Gravitational Waves as Probes for New Physics Gravitational Waves as Probes for New Physics

Speaker

Mariano Quiros Carcelen (The Barcelona Institute of Science and Technology (BIST) (ES))

Description

We consider Kaluza-Klein (KK) resonances with masses $m_{\rm KK}$ at the multi-TeV scale, out of reach of LHC. The backreaction of the radion field on the gravitational metric is taken into account by using the superpotential formalism. The confinement/deconfinement first order phase transition leads to a gravitational wave stochastic background which mainly depends on the scale $m_{\rm KK}$ and the number of colors, $N$, in the dual theory. Its power spectrum peaks at a frequency that depends on the amount of tuning required in the electroweak sector. It turns out that the present and forthcoming gravitational wave observatories can probe scenarios where the KK resonances are very heavy.

Primary author

Mariano Quiros Carcelen (The Barcelona Institute of Science and Technology (BIST) (ES))

Presentation materials