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Title: Characterising dark matter searches at colliders and direct detection experiments: Vector mediators

Abstract

We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. We study two MSDM models where the DM is a Dirac fermion which interacts with a vector and axial-vector mediator. The models are characterised by four parameters: mDM, Mmed , gDM and gq, the DM and mediator masses, and the mediator couplings to DM and quarks respectively. The MSDM models accurately capture the full event kinematics, and the dependence on all masses and couplings can be systematically studied. The interpretation of mono-jet searches in this framework can be used to establish an equal-footing comparison with direct detection experiments. For theories with a vector mediator, LHC mono-jet searches possess better sensitivity than direct detection searches for light DM masses (≲5 GeV). For axial-vector mediators, LHC and direct detection searches generally probe orthogonal directions in the parameter space. We explore the projected limits of these searches from the ultimate reach of the LHC and multi-ton xenon direct detection experiments, and find that the complementarity of the searches remains. In conclusion, we provide a comparison of limits in the MSDM and effective field theory (EFT) frameworks to highlight the deficiencies of the EFT framework,more » particularly when exploring the complementarity of mono-jet and direct detection searches.« less

Authors:
 [1];  [2];  [1];  [3]
  1. Imperial College, London (United Kingdom)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Durham Univ., Durham (United Kingdom); Univ. of Amsterdam, Amsterdam (Netherlands)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1177413
Report Number(s):
SLAC-PUB-16033
Journal ID: ISSN 1029-8479; arXiv:1407.8257; TRN: US1500492
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2015; 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; phenomenology-HEP; HEPPH; exotics; Beyond Standard Model; Hadron-Hadron Scattering; particle and resonance production

Citation Formats

Buchmueller, Oliver, Dolan, Matthew J., Malik, Sarah A., and McCabe, Christopher. Characterising dark matter searches at colliders and direct detection experiments: Vector mediators. United States: N. p., 2015. Web. doi:10.1007/JHEP01(2015)037.
Buchmueller, Oliver, Dolan, Matthew J., Malik, Sarah A., & McCabe, Christopher. Characterising dark matter searches at colliders and direct detection experiments: Vector mediators. United States. https://doi.org/10.1007/JHEP01(2015)037
Buchmueller, Oliver, Dolan, Matthew J., Malik, Sarah A., and McCabe, Christopher. 2015. "Characterising dark matter searches at colliders and direct detection experiments: Vector mediators". United States. https://doi.org/10.1007/JHEP01(2015)037. https://www.osti.gov/servlets/purl/1177413.
@article{osti_1177413,
title = {Characterising dark matter searches at colliders and direct detection experiments: Vector mediators},
author = {Buchmueller, Oliver and Dolan, Matthew J. and Malik, Sarah A. and McCabe, Christopher},
abstractNote = {We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. We study two MSDM models where the DM is a Dirac fermion which interacts with a vector and axial-vector mediator. The models are characterised by four parameters: mDM, Mmed , gDM and gq, the DM and mediator masses, and the mediator couplings to DM and quarks respectively. The MSDM models accurately capture the full event kinematics, and the dependence on all masses and couplings can be systematically studied. The interpretation of mono-jet searches in this framework can be used to establish an equal-footing comparison with direct detection experiments. For theories with a vector mediator, LHC mono-jet searches possess better sensitivity than direct detection searches for light DM masses (≲5 GeV). For axial-vector mediators, LHC and direct detection searches generally probe orthogonal directions in the parameter space. We explore the projected limits of these searches from the ultimate reach of the LHC and multi-ton xenon direct detection experiments, and find that the complementarity of the searches remains. In conclusion, we provide a comparison of limits in the MSDM and effective field theory (EFT) frameworks to highlight the deficiencies of the EFT framework, particularly when exploring the complementarity of mono-jet and direct detection searches.},
doi = {10.1007/JHEP01(2015)037},
url = {https://www.osti.gov/biblio/1177413}, journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 1,
volume = 2015,
place = {United States},
year = {Fri Jan 09 00:00:00 EST 2015},
month = {Fri Jan 09 00:00:00 EST 2015}
}

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