arXiv subjects

Imran Alkhatib

Publications and source records attributed to Imran Alkhatib.

2 recordsLinked to original sources

arXiv2022

A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

In this paper, we present a re-analysis of SuperCDMS data using a profile likelihood approach to search for sub-GeV dark matter particles (DM) through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that would otherwise be undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via the bremsstrahlung channel. The Migdal channel search excludes DM masses down to $30~\textrm{MeV}/c^2$ at $5.0 \times 10^{-30}~\textrm{cm}^2$.

hep-ex↗

arXiv2021

Geometric Optimization of the MATHUSLA Detector

MATHUSLA is a proposed displaced vertex detector for neutral long-lived particle decays. It was proposed with general specifications of the size of its decay volume and its location. In this study, different simplified models containing LLPs are investigated using Monte Carlo event generators, and LLP decay probability maps are generated. Specific optimal configurations for the detector are found for each model according to available land around the CMS detector. We demonstrate that the placement and dimensions of a proposed 10000 m2 engineering benchmark can be modified so that an improvement in acceptance (up to 12% more LLP decays) is observed. Also, it is found that the engineering benchmark would observe about 80% of the number of LLP decays that the earlier MATHUSLA200 physics sensitivity benchmark with four times the area would observe.

hep-ph↗