MadDM

How to generate relic density for four-body annihilation

Asked by changlinhu

Dear all,

How to use MadDM to generate relic density for four-body annihilation?

Best

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Chiara Arina
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Best Chiara Arina (carina) said : 		#1

Hi,

for relic density it is not possible to select annihilation processes beyond two-body. Only the standard processes DM DM --> SM SM are allowed for annihilation and computation of relic density. For indirect detection it is possible to select annihilation into 4-body.

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Chiara

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Chiara Arina (carina) said : 		#2

The answer solves the issue

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changlinhu (changlinhu) said : 		#3

Thanks Chiara Arina, that solved my question.

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Langflow (langflow) said : 		#4

To generate relic density for four-body annihilation, calculate the annihilation cross-section and solve the Boltzmann equation. Tools like MicrOMEGAs simplify this process.

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changlinhu (changlinhu) said : 		#5

Thanks Langflow,

I didn't find how to generate relic density for four-body annihilation in MicrOMEGAs manual. Can you teach me how to solve it?