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Title: Freezing in the hierarchy problem

Abstract

Models with a tiny coupling λ between the dark matter and the standard model, λ ~ v/ M Pl ~ 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 ~ M 2 Pl/v 2 gives the observed relic density. Additionally, the ultimate cutoff of the standard model is reduced to ~4π M Pl/√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:
 [1];  [2];  [3]
  1. Univ. of Oregon, Eugene, OR (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Institute for Advanced Study, Princeton, NJ (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., 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 Volume: 99; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
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. doi:10.1103/physrevd.99.031702.
Cohen, Timothy, D’Agnolo, Raffaele Tito, and Low, Matthew. Mon . "Freezing in the hierarchy problem". United States. doi: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 = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/physrevd.99.031702

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