Superheavy dark matter through Higgs portal operators
Abstract
The WIMPzilla hypothesis states that the dark matter is a super-weakly-interacting and super-heavy particle. Conventionally, the WIMPzilla abundance is set by gravitational particle production during or at the end of inflation. In this study we allow the WIMPzilla to interact directly with Standard Model fields through the Higgs portal, and we calculate the thermal production (freeze-in) of WIMPzilla dark matter from the annihilation of Higgs boson pairs in the plasma. The two particle-physics model parameters are the WIMPzilla mass and the Higgs-WIMPzilla coupling. The two cosmological parameters are the reheating temperature and the expansion rate of the universe at the end of inflation. We delineate the regions of parameters space where either gravitational or thermal production is dominant, and within those regions we identify the parameters that predict the observed dark matter relic abundance. Allowing for thermal production opens up the parameter space, even for Planck-suppressed Higgs-WIMPzilla interactions.
- Authors:
-
- Univ. of Chicago, IL (United States)
- Publication Date:
- Research Org.:
- Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1595666
- Alternate Identifier(s):
- OSTI ID: 1410398
- Grant/Contract Number:
- SC0009924; FG02-13ER41958
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 10; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Kolb, Edward W., and Long, Andrew J. Superheavy dark matter through Higgs portal operators. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.96.103540.
Kolb, Edward W., & Long, Andrew J. Superheavy dark matter through Higgs portal operators. United States. https://doi.org/10.1103/PhysRevD.96.103540
Kolb, Edward W., and Long, Andrew J. Mon .
"Superheavy dark matter through Higgs portal operators". United States. https://doi.org/10.1103/PhysRevD.96.103540. https://www.osti.gov/servlets/purl/1595666.
@article{osti_1595666,
title = {Superheavy dark matter through Higgs portal operators},
author = {Kolb, Edward W. and Long, Andrew J.},
abstractNote = {The WIMPzilla hypothesis states that the dark matter is a super-weakly-interacting and super-heavy particle. Conventionally, the WIMPzilla abundance is set by gravitational particle production during or at the end of inflation. In this study we allow the WIMPzilla to interact directly with Standard Model fields through the Higgs portal, and we calculate the thermal production (freeze-in) of WIMPzilla dark matter from the annihilation of Higgs boson pairs in the plasma. The two particle-physics model parameters are the WIMPzilla mass and the Higgs-WIMPzilla coupling. The two cosmological parameters are the reheating temperature and the expansion rate of the universe at the end of inflation. We delineate the regions of parameters space where either gravitational or thermal production is dominant, and within those regions we identify the parameters that predict the observed dark matter relic abundance. Allowing for thermal production opens up the parameter space, even for Planck-suppressed Higgs-WIMPzilla interactions.},
doi = {10.1103/PhysRevD.96.103540},
journal = {Physical Review D},
number = 10,
volume = 96,
place = {United States},
year = {Mon Nov 27 00:00:00 EST 2017},
month = {Mon Nov 27 00:00:00 EST 2017}
}
Web of Science
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