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Title: Dark tridents at off-axis liquid argon neutrino detectors

Abstract

Here, we present dark tridents, a new channel for exploring dark sectors in short-baseline neutrino experiments. Dark tridents are clean, distinct events where, like neutrino tridents, the scattering of a very weakly coupled particle leads to the production of a lepton--antilepton pair. Dark trident production occurs in models where long-lived dark-sector particles are produced along with the neutrinos in a beam-dump environment and interact with neutrino detectors downstream, producing an on-shell boson which decays into a pair of charged leptons. We focus on a simple model where the dark matter particle interacts with the standard model exclusively through a dark photon, and concentrate on the region of parameter space where the dark photon mass is smaller than twice that of the dark matter particle and hence decays exclusively into standard-model particles. We compute event rates and discuss search strategies for dark tridents from dark matter at the current and upcoming liquid argon detectors aligned with the Booster beam at Fermilab -- MicroBooNE, SBND, and ICARUS -- assuming the dark sector particles are produced off-axis in the higher energy NuMI beam. We find that MicroBooNE has already recorded enough data to be competitive with existing bounds on this dark sector model,more » and that new regions of parameter space will be probed with future data and experiments.« less

Authors:
 [1];  [2];  [2];  [1];  [3];  [1];  [3]
  1. Northwestern Univ., Evanston, IL (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1478013
Report Number(s):
arXiv:1809.06388; FERMILAB-PUB-18-433-T; NUHEP-TH/18-10
Journal ID: ISSN 1029-8479; 1694473
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2019; Journal Issue: 1; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Neutrino Physics

Citation Formats

de Gouvêa, André, Fox, Patrick J., Harnik, Roni, Kelly, Kevin J., Fermi National Accelerator Lab., Zhang, Yue, and Fermi National Accelerator Lab. Dark tridents at off-axis liquid argon neutrino detectors. United States: N. p., 2019. Web. doi:10.1007/JHEP01(2019)001.
de Gouvêa, André, Fox, Patrick J., Harnik, Roni, Kelly, Kevin J., Fermi National Accelerator Lab., Zhang, Yue, & Fermi National Accelerator Lab. Dark tridents at off-axis liquid argon neutrino detectors. United States. doi:10.1007/JHEP01(2019)001.
de Gouvêa, André, Fox, Patrick J., Harnik, Roni, Kelly, Kevin J., Fermi National Accelerator Lab., Zhang, Yue, and Fermi National Accelerator Lab. Wed . "Dark tridents at off-axis liquid argon neutrino detectors". United States. doi:10.1007/JHEP01(2019)001. https://www.osti.gov/servlets/purl/1478013.
@article{osti_1478013,
title = {Dark tridents at off-axis liquid argon neutrino detectors},
author = {de Gouvêa, André and Fox, Patrick J. and Harnik, Roni and Kelly, Kevin J. and Fermi National Accelerator Lab. and Zhang, Yue and Fermi National Accelerator Lab.},
abstractNote = {Here, we present dark tridents, a new channel for exploring dark sectors in short-baseline neutrino experiments. Dark tridents are clean, distinct events where, like neutrino tridents, the scattering of a very weakly coupled particle leads to the production of a lepton--antilepton pair. Dark trident production occurs in models where long-lived dark-sector particles are produced along with the neutrinos in a beam-dump environment and interact with neutrino detectors downstream, producing an on-shell boson which decays into a pair of charged leptons. We focus on a simple model where the dark matter particle interacts with the standard model exclusively through a dark photon, and concentrate on the region of parameter space where the dark photon mass is smaller than twice that of the dark matter particle and hence decays exclusively into standard-model particles. We compute event rates and discuss search strategies for dark tridents from dark matter at the current and upcoming liquid argon detectors aligned with the Booster beam at Fermilab -- MicroBooNE, SBND, and ICARUS -- assuming the dark sector particles are produced off-axis in the higher energy NuMI beam. We find that MicroBooNE has already recorded enough data to be competitive with existing bounds on this dark sector model, and that new regions of parameter space will be probed with future data and experiments.},
doi = {10.1007/JHEP01(2019)001},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 1,
volume = 2019,
place = {United States},
year = {2019},
month = {1}
}

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