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One-loop corrections, uncertainties, and approximations in neutralino annihilations: Examples
Physical Review D
The extracted value of the relic density has reached the few per-cent level precision. One can therefore no longer content oneself with calculations of this observable where the annihilation processes are computed at tree-level, especially in supersymmetry where radiative corrections are usually large. Implementing full one-loop corrections to all annihilation processes that would be needed in a scan over parameters is a daunting task. On the other hand one may ask whether the bulk of thedoi:10.1103/physrevd.84.116001 fatcat:5htfvjgmqvft3gbdrclob5npa4