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Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam

Åkesson, Torsten LU orcid ; Bravo, Cameron ; Brennan, Liam ; Bryngemark, Lene Kristian LU ; Butti, Pierfrancesco ; Dukes, E. Craig ; Dutta, Valentina ; Echenard, Bertrand ; Eichlersmith, Thomas and Eisch, Jonathan , et al. (2023) In Journal of High Energy Physics 2023(12).
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. [Figure not available: see fulltext.]

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond Standard Model, Dark Matter, Fixed Target Experiments
in
Journal of High Energy Physics
volume
2023
issue
12
article number
92
publisher
Springer
external identifiers
  • scopus:85181735367
ISSN
1029-8479
DOI
10.1007/JHEP12(2023)092
language
English
LU publication?
yes
id
9b2cf660-0044-4197-880b-68cbd6e6fdd1
date added to LUP
2024-01-29 14:36:00
date last changed
2024-01-29 14:37:25
@article{9b2cf660-0044-4197-880b-68cbd6e6fdd1,
  abstract     = {{<p>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 × 10<sup>14</sup> electrons on target at 8 GeV. [Figure not available: see fulltext.]</p>}},
  author       = {{Åkesson, Torsten and Bravo, Cameron and Brennan, Liam and Bryngemark, Lene Kristian and Butti, Pierfrancesco and Dukes, E. Craig and Dutta, Valentina and Echenard, Bertrand and Eichlersmith, Thomas and Eisch, Jonathan and Elén, Einar and Ehrlich, Ralf and Froemming, Cooper and Furmanski, Andrew and Gogate, Niramay and Grieco, Chiara and Group, Craig and Herde, Hannah and Herwig, Christian and Hitlin, David G. and Horoho, Tyler and Incandela, Joseph and Ketchum, Wesley and Krnjaic, Gordan and Li, Amina and Mans, Jeremiah and Masterson, Phillip and Middleton, Sophie and Moreno, Omar and Mullier, Geoffrey and Muse, Joseph and Nelson, Timothy and O’Dwyer, Rory and Östman, Leo and Oyang, James and Pascadlo, Jessica and Pöttgen, Ruth and Sarmiento, Luis G. and Schuster, Philip and Solt, Matthew and Suarez, Cristina Mantilla and Tompkins, Lauren and Toro, Natalia and Tran, Nhan and Wallin, Erik and Whitbeck, Andrew and Zhang, Danyi}},
  issn         = {{1029-8479}},
  keywords     = {{Beyond Standard Model; Dark Matter; Fixed Target Experiments}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam}},
  url          = {{http://dx.doi.org/10.1007/JHEP12(2023)092}},
  doi          = {{10.1007/JHEP12(2023)092}},
  volume       = {{2023}},
  year         = {{2023}},
}