Dark Matter Production at LHC from Black Hole Remnants

TL;DR

This paper explores the potential for detecting dark matter produced from black hole remnants at the LHC, highlighting unique signatures and challenges related to impact parameter effects.

Contribution

It introduces a novel dark matter candidate from black hole remnants and analyzes its production and detection prospects at the LHC, including impact parameter effects.

Findings

Black hole remnants at LHC are typically 5-10 TeV in mass.

Monojet production from BHRs can be significant without impact parameter effects.

Impact parameter effects reduce the monojet signal below detectable levels.

Abstract

We study dark matter production at CERN LHC from black hole remnants (BHR). We find that the typical mass of these BHR at LHC is ~ 5-10 TeV which is heavier than other dark matter candidates such as: axion, axino, neutralino etc. We propose the detection of this dark matter via single jet production in the process pp -> jet +BHR(dark matter) at CERN LHC. We find that for zero impact parameter partonic collisions, the monojet cross section is not negligible in comparison to the standard model background and is much higher than the other dark matter scenarios studied so far. We also find that d\sigma/dp_T of jet production in this process increases as p_T increases, whereas in all other dark matter scenarios the d\sigma/dp_T decreases at CERN LHC. This may provide an useful signature for dark matter detection at LHC. However, we find that when the impact parameter dependent effect of inelasticity is included, the monojet cross section from the above process becomes much smaller than the standard model background and may not be detectable at LHC.