# ICHEP 2016 Chicago

3-10 August 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

## Gamma-ray signal from Dark Matter Annihilation mediated by mixing slepton

Aug 8, 2016, 6:30 PM
2h
Riverwalk A/B

### Riverwalk A/B

Poster Astro-particle Physics and Cosmology

### Speaker

Mr Fei Teng (University of Utah)

### Description

In order to reconcile the tension between the collider SUSY particle search and the dark matter relic density constraint, we free ourselves from the simplest CMSSM model and find a large parameter space in which a sub-TeV bino dark matter may comply with all the current experimental constraints. In this so-called incredible bulk region, sleptons have a nonzero mixing angle while the dominant dark matter annihilation product is lepton-anti-lepton pair. We have explored this alternative and studied the resultant monochromatic gamma-ray signal produced by the $\gamma\gamma$ and $\gamma Z$ final state on top of the continuous internal bremsstrahlung signal. The spectrum will give some indications to the mixing angle and CP-violation phase of the slepton sector. Future ground-based and satellite-based experiments will reach the sensitivity of $10^{-29}\text{cm}^{3}/\text{s}$ for dark matter annihilation cross section and a 1% energy resolution at $\sim 100$GeV will be able to detect our proposed signal through a cut-off analysis.

### Primary author

Mr Fei Teng (University of Utah)

### Co-authors

Jason Kumar (University of Hawaii) Prof. Pearl Sandick (University of utah) Mr Takahiro Yamamoto (University of Utah)

### Presentation materials

There are no materials yet.