Direct detection rate of heavy Higgsino-like and Wino-like dark matter

Qing Chen; Richard J. Hill

doi:10.1016/j.physletb.2020.135364

Direct detection rate of heavy Higgsino-like and Wino-like dark matter

Qing Chen
, Richard J. Hill

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Many viable dark matter models contain a WIMP candidate that is a component of a new electroweak multiplet whose mass M is large compared to the electroweak scale m_W. A generic amplitude-level cancellation in such models yields a severe suppression of the cross section for WIMP-nucleon scattering, making it important to assess the impact of formally subleading effects. The power correction of order m_W/M to the heavy WIMP limit is computed for electroweak doublet (Higgsino-like) dark matter candidates, and a modern model of nuclear modifications to the free nucleon cross section is evaluated. Corrections to the pure Higgsino limit are determined by a single parameter through first order in the heavy WIMP expansion. Current and projected experimental bounds on this parameter are investigated. The direct detection signal in the pure Higgsino limit remains below neutrino backgrounds for WIMPs in the TeV mass range. Nuclear corrections are applied also to the heavy Wino case, completing the investigation of combined subleading effects from perturbative QCD, 1/M power corrections, and nuclear modifications.

Original language	English
Article number	135364
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	804
DOIs	https://doi.org/10.1016/j.physletb.2020.135364
State	Published - May 10 2020

Bibliographical note

Publisher Copyright:
© 2020 The Authors

Funding

We thank M. Hoferichter and M. Solon for discussions and comments on the manuscript. QC also thanks Xinshuai Yan for helpful discussions. Work supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0019095. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. QC thanks the Fermilab theory group, and the high energy theory group at Northwestern University, for hospitality during visits where part of this work was performed. We thank M. Hoferichter and M. Solon for discussions and comments on the manuscript. QC also thanks Xinshuai Yan for helpful discussions. Work supported by the U.S. Department of Energy , Office of Science, Office of High Energy Physics, under Award Number DE-SC0019095 . Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy . QC thanks the Fermilab theory group, and the high energy theory group at Northwestern University, for hospitality during visits where part of this work was performed.

Funders	Funder number
Fermi Research Alliance, LLC	DE-AC02-07CH11359
United States Department of Energy
U.S. Department of Energy
Office of Science Programs
Institute for High Energy Physics	DE-SC0019095

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2020.135364

Cite this

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title = "Direct detection rate of heavy Higgsino-like and Wino-like dark matter",

abstract = "Many viable dark matter models contain a WIMP candidate that is a component of a new electroweak multiplet whose mass M is large compared to the electroweak scale mW. A generic amplitude-level cancellation in such models yields a severe suppression of the cross section for WIMP-nucleon scattering, making it important to assess the impact of formally subleading effects. The power correction of order mW/M to the heavy WIMP limit is computed for electroweak doublet (Higgsino-like) dark matter candidates, and a modern model of nuclear modifications to the free nucleon cross section is evaluated. Corrections to the pure Higgsino limit are determined by a single parameter through first order in the heavy WIMP expansion. Current and projected experimental bounds on this parameter are investigated. The direct detection signal in the pure Higgsino limit remains below neutrino backgrounds for WIMPs in the TeV mass range. Nuclear corrections are applied also to the heavy Wino case, completing the investigation of combined subleading effects from perturbative QCD, 1/M power corrections, and nuclear modifications.",

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AU - Hill, Richard J.

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N2 - Many viable dark matter models contain a WIMP candidate that is a component of a new electroweak multiplet whose mass M is large compared to the electroweak scale mW. A generic amplitude-level cancellation in such models yields a severe suppression of the cross section for WIMP-nucleon scattering, making it important to assess the impact of formally subleading effects. The power correction of order mW/M to the heavy WIMP limit is computed for electroweak doublet (Higgsino-like) dark matter candidates, and a modern model of nuclear modifications to the free nucleon cross section is evaluated. Corrections to the pure Higgsino limit are determined by a single parameter through first order in the heavy WIMP expansion. Current and projected experimental bounds on this parameter are investigated. The direct detection signal in the pure Higgsino limit remains below neutrino backgrounds for WIMPs in the TeV mass range. Nuclear corrections are applied also to the heavy Wino case, completing the investigation of combined subleading effects from perturbative QCD, 1/M power corrections, and nuclear modifications.

AB - Many viable dark matter models contain a WIMP candidate that is a component of a new electroweak multiplet whose mass M is large compared to the electroweak scale mW. A generic amplitude-level cancellation in such models yields a severe suppression of the cross section for WIMP-nucleon scattering, making it important to assess the impact of formally subleading effects. The power correction of order mW/M to the heavy WIMP limit is computed for electroweak doublet (Higgsino-like) dark matter candidates, and a modern model of nuclear modifications to the free nucleon cross section is evaluated. Corrections to the pure Higgsino limit are determined by a single parameter through first order in the heavy WIMP expansion. Current and projected experimental bounds on this parameter are investigated. The direct detection signal in the pure Higgsino limit remains below neutrino backgrounds for WIMPs in the TeV mass range. Nuclear corrections are applied also to the heavy Wino case, completing the investigation of combined subleading effects from perturbative QCD, 1/M power corrections, and nuclear modifications.

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Direct detection rate of heavy Higgsino-like and Wino-like dark matter

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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