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Title: Toward (finally!) ruling out Z and Higgs mediated dark matter models

Abstract

In recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parameter space associated with the WIMP paradigm. In this paper, we focus on the subset of WIMP models in which the dark matter annihilates in the early universe through couplings to either the Standard Model Z or the Standard Model Higgs boson. Considering fermionic, scalar, and vector dark matter candidates within a model-independent context, we find that the overwhelming majority of these dark matter candidates are already ruled out by existing experiments. In the case of Z mediated dark matter, the only scenarios that are not currently excluded are those in which the dark matter is a fermion with an axial coupling and with a mass either within a few GeV of the Z resonance (mDM ≃ mZ/2) or greater than 200 GeV, or with a vector coupling and with mDM > 6 TeV . Several Higgs mediated scenarios are currently viable if the mass of the dark matter is near the Higgs pole (mDM ≃ mH/2). Otherwise, the only scenarios that are not excluded are those in which the dark matter is a scalar (vector) heaviermore » than 400 GeV (1160 GeV) with a Higgs portal coupling, or a fermion with a pseudoscalar (CP violating) coupling to the Standard Model Higgs boson. Furthermore, with the exception of dark matter with a purely pseudoscalar coupling to the Higgs, it is anticipated that planned direct detection experiments will probe nearly the entire range of models considered in this study.« less

Authors:
 [1];  [2];  [3];  [4];  [5];  [3]
  1. CSIC-Univ. de Valencia, Valencia (Spain)
  2. (FNAL), Batavia, IL (United States)
  3. Univ. of Chicago, Chicago, IL (United States)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1331771
Report Number(s):
IFIC-16-66; FERMILAB-PUB-16-370-A; arXiv:1609.09079
Journal ID: ISSN 1475-7516; 1488535
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 12; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter theory; dark matter experiments

Citation Formats

Escudero, Miguel, Fermi National Accelerator Lab., Berlin, Asher, Hooper, Dan, Univ. of Chicago, Chicago, IL, and Lin, Meng -Xiang. Toward (finally!) ruling out Z and Higgs mediated dark matter models. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/12/029.
Escudero, Miguel, Fermi National Accelerator Lab., Berlin, Asher, Hooper, Dan, Univ. of Chicago, Chicago, IL, & Lin, Meng -Xiang. Toward (finally!) ruling out Z and Higgs mediated dark matter models. United States. https://doi.org/10.1088/1475-7516/2016/12/029
Escudero, Miguel, Fermi National Accelerator Lab., Berlin, Asher, Hooper, Dan, Univ. of Chicago, Chicago, IL, and Lin, Meng -Xiang. Thu . "Toward (finally!) ruling out Z and Higgs mediated dark matter models". United States. https://doi.org/10.1088/1475-7516/2016/12/029. https://www.osti.gov/servlets/purl/1331771.
@article{osti_1331771,
title = {Toward (finally!) ruling out Z and Higgs mediated dark matter models},
author = {Escudero, Miguel and Fermi National Accelerator Lab. and Berlin, Asher and Hooper, Dan and Univ. of Chicago, Chicago, IL and Lin, Meng -Xiang},
abstractNote = {In recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parameter space associated with the WIMP paradigm. In this paper, we focus on the subset of WIMP models in which the dark matter annihilates in the early universe through couplings to either the Standard Model Z or the Standard Model Higgs boson. Considering fermionic, scalar, and vector dark matter candidates within a model-independent context, we find that the overwhelming majority of these dark matter candidates are already ruled out by existing experiments. In the case of Z mediated dark matter, the only scenarios that are not currently excluded are those in which the dark matter is a fermion with an axial coupling and with a mass either within a few GeV of the Z resonance (mDM ≃ mZ/2) or greater than 200 GeV, or with a vector coupling and with mDM > 6 TeV . Several Higgs mediated scenarios are currently viable if the mass of the dark matter is near the Higgs pole (mDM ≃ mH/2). Otherwise, the only scenarios that are not excluded are those in which the dark matter is a scalar (vector) heavier than 400 GeV (1160 GeV) with a Higgs portal coupling, or a fermion with a pseudoscalar (CP violating) coupling to the Standard Model Higgs boson. Furthermore, with the exception of dark matter with a purely pseudoscalar coupling to the Higgs, it is anticipated that planned direct detection experiments will probe nearly the entire range of models considered in this study.},
doi = {10.1088/1475-7516/2016/12/029},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 12,
volume = 2016,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2016},
month = {Thu Dec 15 00:00:00 EST 2016}
}

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