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Title: Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter

Abstract

Motivated by the observation that the Higgs quartic coupling runs to zero at an intermediate scale, we propose a new framework for models of split supersymmetry, in which gauginos acquire intermediate scale Dirac masses of $$\sim 10^{8-11}$$ GeV. Scalar masses arise from one-loop finite contributions as well as direct gravity-mediated contributions. Like split supersymmetry, one Higgs doublet is fine-tuned to be light. The scale at which the Dirac gauginos are introduced to make the Higgs quartic zero is the same as is necessary for gauge coupling unification. Thus, gauge coupling unification persists (nontrivially, due to adjoint multiplets), though with a somewhat higher unification scale $$\gtrsim 10^{17}$$ GeV. The $$\mu$$-term is naturally at the weak scale, and provides an opportunity for experimental verification. We present two manifestations of Split Dirac Supersymmetry. In the "Pure Dirac" model, the lightest Higgsino must decay through R-parity violating couplings, leading to an array of interesting signals in colliders. In the "Hypercharge Impure" model, the bino acquires a Majorana mass that is one-loop suppressed compared with the Dirac gluino and wino. This leads to weak scale Higgsino dark matter whose overall mass scale, as well as the mass splitting between the neutral components, is naturally generatedmore » from the same UV dynamics. We outline the challenges to discovering pseudo-Dirac Higgsino dark matter in collider and dark matter detection experiments.« less

Authors:
 [1];  [2];  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States).
  2. Institute for Advanced Study, Princeton, NJ (United States); Univ. of Oregon, Eugene, OR (United States)
  3. Univ. of Notre Dame, IN (United States)
Publication Date:
Research Org.:
Univ. of Oregon, Eugene, OR (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1601483
Alternate Identifier(s):
OSTI ID: 1180682; OSTI ID: 1333176
Report Number(s):
FERMILAB-PUB-14-124-T; arXiv:1405.3692
Journal ID: ISSN 1550-7998; PRVDAQ
Grant/Contract Number:  
SC0011640; FG02-96ER40969; AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 90; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Fox, Patrick J., Kribs, Graham D., and Martin, Adam. Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.075006.
Fox, Patrick J., Kribs, Graham D., & Martin, Adam. Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter. United States. https://doi.org/10.1103/PhysRevD.90.075006
Fox, Patrick J., Kribs, Graham D., and Martin, Adam. Tue . "Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter". United States. https://doi.org/10.1103/PhysRevD.90.075006. https://www.osti.gov/servlets/purl/1601483.
@article{osti_1601483,
title = {Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter},
author = {Fox, Patrick J. and Kribs, Graham D. and Martin, Adam},
abstractNote = {Motivated by the observation that the Higgs quartic coupling runs to zero at an intermediate scale, we propose a new framework for models of split supersymmetry, in which gauginos acquire intermediate scale Dirac masses of $\sim 10^{8-11}$ GeV. Scalar masses arise from one-loop finite contributions as well as direct gravity-mediated contributions. Like split supersymmetry, one Higgs doublet is fine-tuned to be light. The scale at which the Dirac gauginos are introduced to make the Higgs quartic zero is the same as is necessary for gauge coupling unification. Thus, gauge coupling unification persists (nontrivially, due to adjoint multiplets), though with a somewhat higher unification scale $\gtrsim 10^{17}$ GeV. The $\mu$-term is naturally at the weak scale, and provides an opportunity for experimental verification. We present two manifestations of Split Dirac Supersymmetry. In the "Pure Dirac" model, the lightest Higgsino must decay through R-parity violating couplings, leading to an array of interesting signals in colliders. In the "Hypercharge Impure" model, the bino acquires a Majorana mass that is one-loop suppressed compared with the Dirac gluino and wino. This leads to weak scale Higgsino dark matter whose overall mass scale, as well as the mass splitting between the neutral components, is naturally generated from the same UV dynamics. We outline the challenges to discovering pseudo-Dirac Higgsino dark matter in collider and dark matter detection experiments.},
doi = {10.1103/PhysRevD.90.075006},
url = {https://www.osti.gov/biblio/1601483}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 7,
volume = 90,
place = {United States},
year = {2014},
month = {10}
}

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Cited by: 12 works
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    Works referencing / citing this record:

    When the universe expands too fast: relentless dark matter
    journal, May 2017


    Towards the final word on neutralino dark matter
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