# "High Energy Physics - Phenomenology"

## Higgs Enhancement for the Dark Matter Relic Density

We consider the long-range effect of the Higgs on the density of thermal-relic dark matter. While the electroweak gauge boson and gluon exchange have been previously studied, the Higgs is typically thought to mediate only contact interactions. We …

## Les Houches 2017: Physics at TeV Colliders New Physics Working Group Report

We present the activities of the New Physics' working group for the Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics studies connected with the Higgs boson and its properties, direct search …

## Probing Leptogenesis

The focus of this chapter lies on the possible experimental tests of leptogenesis scenarios. We consider both leptogenesis generated from oscillations, as well as leptogenesis from out-of-equilibrium decays. As the Akhmedov-Rubakov-Smirnov (ARS) …

## Predicting the neutralino relic density in the MSSM more precisely

The dark matter relic density being a powerful observable to constrain models of new physics, the recent experimental progress calls for more precise theoretical predictions. On the particle physics side, improvements are to be made in the …

## Theoretical uncertainty of the supersymmetric dark matter relic density from scheme and scale variations

For particle physics observables at colliders such as the LHC at CERN, it has been common practice for many decades to estimate the theoretical uncertainty by studying the variations of the predicted cross sections with a priori unpredictable scales. …

## Impact of Neutrinoless Double Beta Decay on Models of Baryogenesis

Interactions that manifest themselves as lepton number violating processes at low energies in combination with sphaleron transitions typically erase any pre-existing baryon asymmetry of the Universe. We demonstrate in a model independent approach …