Revisiting CMB constraints on dark matter annihilation
2021 ◽
Vol 2021
(12)
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pp. 015
Keyword(s):
Abstract The precision measurements of the cosmic microwave background power spectrum put a strong constraint on the dark matter annihilation cross section since the electromagnetic energy injection by the dark matter annihilation affects the ionization history of the universe. In this paper, we update our previous simulation code for calculating the ionization history with the effect of dark matter annihilation by including Helium interactions and improving the precision of calculations. We give an updated constraint on the annihilation cross section and mass of dark matter using the modified RECFAST code with the Planck 2018 datasets.
2020 ◽
Vol 500
(4)
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pp. 5583-5588
2019 ◽
Vol 495
(1)
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pp. L124-L128
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2008 ◽
Vol 4
(S255)
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pp. 56-60
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Keyword(s):
2009 ◽
Vol 399
(4)
◽
pp. 2033-2040
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Keyword(s):
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Keyword(s):
2021 ◽
Vol 2021
(12)
◽
pp. 007
2021 ◽
Vol 2021
(12)
◽
pp. 034
Keyword(s):
2012 ◽
Vol 2012
(07)
◽
pp. 017-017
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Keyword(s):