Freezing in the hierarchy problem
Abstract
Models with a tiny coupling λ between the dark matter and the standard model, λ ~ v/MPl ~ 10–16, can yield the measured relic abundance through the thermal process known as freeze-in. We propose to interpret this small number in the context of perturbative large N theories, where couplings are suppressed by inverse powers of N. Then N ~ M2Pl/v2 gives the observed relic density. Additionally, the ultimate cutoff of the standard model is reduced to ~4πMPl/√N ~ 4πv, thereby solving the electroweak hierarchy problem. These theories predict a direct relation between the standard model cutoff and the dark matter mass, linking the spectacular collider phenomenology associated with the low gravitational scale to the cosmological signatures of the dark sector. Here, the dark matter mass can lie in the range from hundreds of keV to hundreds of GeV. Possible cosmological signals include washing out power for small scale structure, indirect detection signals from dark matter decays, and a continuous injection of electromagnetic and hadronic energy throughout the history of the Universe.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1496505
- Alternate Identifier(s):
- OSTI ID: 1504574
- Grant/Contract Number:
- SC0011640; AC02-76SF00515
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 99 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Cohen, Timothy, D’Agnolo, Raffaele Tito, and Low, Matthew. Freezing in the hierarchy problem. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.99.031702.
Cohen, Timothy, D’Agnolo, Raffaele Tito, & Low, Matthew. Freezing in the hierarchy problem. United States. https://doi.org/10.1103/PhysRevD.99.031702
Cohen, Timothy, D’Agnolo, Raffaele Tito, and Low, Matthew. Mon .
"Freezing in the hierarchy problem". United States. https://doi.org/10.1103/PhysRevD.99.031702.
@article{osti_1496505,
title = {Freezing in the hierarchy problem},
author = {Cohen, Timothy and D’Agnolo, Raffaele Tito and Low, Matthew},
abstractNote = {Models with a tiny coupling λ between the dark matter and the standard model, λ ~ v/MPl ~ 10–16, can yield the measured relic abundance through the thermal process known as freeze-in. We propose to interpret this small number in the context of perturbative large N theories, where couplings are suppressed by inverse powers of N. Then N ~ M2Pl/v2 gives the observed relic density. Additionally, the ultimate cutoff of the standard model is reduced to ~4πMPl/√N ~ 4πv, thereby solving the electroweak hierarchy problem. These theories predict a direct relation between the standard model cutoff and the dark matter mass, linking the spectacular collider phenomenology associated with the low gravitational scale to the cosmological signatures of the dark sector. Here, the dark matter mass can lie in the range from hundreds of keV to hundreds of GeV. Possible cosmological signals include washing out power for small scale structure, indirect detection signals from dark matter decays, and a continuous injection of electromagnetic and hadronic energy throughout the history of the Universe.},
doi = {10.1103/PhysRevD.99.031702},
journal = {Physical Review D},
number = 3,
volume = 99,
place = {United States},
year = {Mon Feb 25 00:00:00 EST 2019},
month = {Mon Feb 25 00:00:00 EST 2019}
}
https://doi.org/10.1103/PhysRevD.99.031702
Web of Science
Figures / Tables:
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