Strong CMB constraint on P -wave annihilating dark matter
Abstract
We consider a dark sector consisting of dark matter that is a Dirac fermion and a scalar mediator. This model has been extensively studied in the past. If the scalar couples to the dark matter in a parity conserving manner then dark matter annihilation to two mediators is dominated by the P-wave channel and hence is suppressed at very low momentum. The indirect detection constraint from the anisotropy of the Cosmic Microwave Background is usually thought to be absent in the model because of this suppression. In this letter we show that dark matter annihilation via bound state formation occurs through the S-wave and hence there is a constraint on the parameter space of the model from the Cosmic Microwave Background.
- Authors:
- Publication Date:
- Research Org.:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1375276
- Alternate Identifier(s):
- OSTI ID: 1545721
- Grant/Contract Number:
- SC0010255; SC0011632
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 773 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
An, Haipeng, Wise, Mark B., and Zhang, Yue. Strong CMB constraint on P -wave annihilating dark matter. Netherlands: N. p., 2017.
Web. doi:10.1016/j.physletb.2017.08.010.
An, Haipeng, Wise, Mark B., & Zhang, Yue. Strong CMB constraint on P -wave annihilating dark matter. Netherlands. https://doi.org/10.1016/j.physletb.2017.08.010
An, Haipeng, Wise, Mark B., and Zhang, Yue. Sun .
"Strong CMB constraint on P -wave annihilating dark matter". Netherlands. https://doi.org/10.1016/j.physletb.2017.08.010.
@article{osti_1375276,
title = {Strong CMB constraint on P -wave annihilating dark matter},
author = {An, Haipeng and Wise, Mark B. and Zhang, Yue},
abstractNote = {We consider a dark sector consisting of dark matter that is a Dirac fermion and a scalar mediator. This model has been extensively studied in the past. If the scalar couples to the dark matter in a parity conserving manner then dark matter annihilation to two mediators is dominated by the P-wave channel and hence is suppressed at very low momentum. The indirect detection constraint from the anisotropy of the Cosmic Microwave Background is usually thought to be absent in the model because of this suppression. In this letter we show that dark matter annihilation via bound state formation occurs through the S-wave and hence there is a constraint on the parameter space of the model from the Cosmic Microwave Background.},
doi = {10.1016/j.physletb.2017.08.010},
journal = {Physics Letters B},
number = C,
volume = 773,
place = {Netherlands},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}
https://doi.org/10.1016/j.physletb.2017.08.010
Web of Science
Works referencing / citing this record:
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- Binder, Tobias; Mukaida, Kyohei; Petraki, Kalliopi
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Displaced lepton jet signatures from self-interacting dark matter bound states
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Rapid bound-state formation of Dark Matter in the Early Universe
text, January 2020
- Binder, Tobias; Mukaida, Kyohei; Petraki, Kalliopi
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