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- Title
Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam.
- Authors
Åkesson, Torsten; Bravo, Cameron; Brennan, Liam; Bryngemark, Lene Kristian; Butti, Pierfrancesco; Dukes, E. Craig; Dutta, Valentina; Echenard, Bertrand; Eichlersmith, Thomas; Eisch, Jonathan; Elén, Einar; Ehrlich, Ralf; Froemming, Cooper; Furmanski, Andrew; Gogate, Niramay; Grieco, Chiara; Group, Craig; Herde, Hannah; Herwig, Christian; Hitlin, David G.
- Abstract
The Light Dark Matter eXperiment (LDMX) is an electron-beam fixed-target experiment designed to achieve comprehensive model independent sensitivity to dark matter particles in the sub-GeV mass region. An upgrade to the LCLS-II accelerator will increase the beam energy available to LDMX from 4 to 8 GeV. Using detailed GEANT4-based simulations, we investigate the effect of the increased beam energy on the capabilities to separate signal and background, and demonstrate that the veto methodology developed for 4 GeV successfully rejects photon-induced backgrounds for at least 2 × 1014 electrons on target at 8 GeV.
- Subjects
DARK matter; PHOTON beams; WEAKLY interacting massive particles; STANDARD model (Nuclear physics)
- Publication
Journal of High Energy Physics, 2023, Vol 2023, Issue 12, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP12(2023)092