Vector dark matter annihilation with internal bremsstrahlung
Abstract
We consider scenarios in which the annihilation of self-conjugate spin-1 dark matter to a Standard Model fermion-antifermion final state is chirality suppressed, but where this suppression can be lifted by the emission of an additional photon via internal bremsstrahlung. We find that this scenario can only arise if the initial dark matter state is polarized, which can occur in the context of self-interacting dark matter. In particular, this is possible if the dark matter pair forms a bound state that decays to its ground state before the constituents annihilate. We show that the shape of the resulting photon spectrum is the same as for self-conjugate spin-0 and spin-1/2 dark matter, but the normalization is less heavily suppressed in the limit of heavy mediators.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Hawaii, Honolulu, HI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1343157
- Alternate Identifier(s):
- OSTI ID: 1367083
- Grant/Contract Number:
- SC0010504
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters. B
- Additional Journal Information:
- Journal Name: Physics Letters. B Journal Volume: 766 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Bambhaniya, Gulab, Kumar, Jason, Marfatia, Danny, Nayak, Alekha C., and Tomar, Gaurav. Vector dark matter annihilation with internal bremsstrahlung. Netherlands: N. p., 2017.
Web. doi:10.1016/j.physletb.2017.01.005.
Bambhaniya, Gulab, Kumar, Jason, Marfatia, Danny, Nayak, Alekha C., & Tomar, Gaurav. Vector dark matter annihilation with internal bremsstrahlung. Netherlands. https://doi.org/10.1016/j.physletb.2017.01.005
Bambhaniya, Gulab, Kumar, Jason, Marfatia, Danny, Nayak, Alekha C., and Tomar, Gaurav. Wed .
"Vector dark matter annihilation with internal bremsstrahlung". Netherlands. https://doi.org/10.1016/j.physletb.2017.01.005.
@article{osti_1343157,
title = {Vector dark matter annihilation with internal bremsstrahlung},
author = {Bambhaniya, Gulab and Kumar, Jason and Marfatia, Danny and Nayak, Alekha C. and Tomar, Gaurav},
abstractNote = {We consider scenarios in which the annihilation of self-conjugate spin-1 dark matter to a Standard Model fermion-antifermion final state is chirality suppressed, but where this suppression can be lifted by the emission of an additional photon via internal bremsstrahlung. We find that this scenario can only arise if the initial dark matter state is polarized, which can occur in the context of self-interacting dark matter. In particular, this is possible if the dark matter pair forms a bound state that decays to its ground state before the constituents annihilate. We show that the shape of the resulting photon spectrum is the same as for self-conjugate spin-0 and spin-1/2 dark matter, but the normalization is less heavily suppressed in the limit of heavy mediators.},
doi = {10.1016/j.physletb.2017.01.005},
journal = {Physics Letters. B},
number = C,
volume = 766,
place = {Netherlands},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}
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https://doi.org/10.1016/j.physletb.2017.01.005
https://doi.org/10.1016/j.physletb.2017.01.005
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Cited by: 9 works
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journal, November 2011
- Bell, Nicole F.; Dent, James B.; Galea, Ahmad J.
- Physics Letters B, Vol. 706, Issue 1
Leading QCD corrections for indirect dark matter searches: A fresh look
journal, February 2016
- Bringmann, Torsten; Galea, Ahmad J.; Walia, Parampreet
- Physical Review D, Vol. 93, Issue 4
Composite inelastic dark matter
journal, September 2010
- Alves, Daniele S. M.; Behbahani, Siavosh R.; Schuster, Philip
- Physics Letters B, Vol. 692, Issue 5
Dark matter annihilation with s-channel internal Higgsstrahlung
journal, August 2016
- Kumar, Jason; Liao, Jiajun; Marfatia, Danny
- Physics Letters B, Vol. 759
Role of electroweak bremsstrahlung for indirect dark matter signatures
journal, December 2009
- Kachelrieß, M.; Serpico, P. D.; Solberg, M. Aa.
- Physical Review D, Vol. 80, Issue 12
Radiative processes in LSP annihilation
journal, December 1989
- Flores, Ricardo; Olive, Keith A.; Rudaz, Serge
- Physics Letters B, Vol. 232, Issue 3
Bremsstrahlung in dark matter annihilation
journal, February 2012
- Barger, Vernon; Keung, Wai-Yee; Marfatia, Danny
- Physics Letters B, Vol. 707, Issue 3-4
Radiative processes in dark matter photino annihilation
journal, July 1989
- Bergström, Lars
- Physics Letters B, Vol. 225, Issue 4