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arXiv · 2403.09325

Improved Constraints on the Variation of the Weak Scale from Big Bang Nucleosynthesis

Helen Meyer·Ulf-G. Meißner
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Abstract

We present an improved calculation of the light element abundances in the framework of Big Bang nucleosynthesis as a function of the Higgs vacuum expectation value $v$. We compare the methods of our calculation to previous literature including the recently published work of Burns et al. [1]. The PDG result for the $^4$He abundance can be explained within $2\sigma$ by $-0.014 \leq \delta v / v \leq 0.026$, for deuterium we find the constraint $-0.005 \leq \delta v / v \leq -0.001$. These bounds are more stringent than what was found earlier.

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Helen Meyer, Ulf-G. Meißner. 2024-03-14. Improved Constraints on the Variation of the Weak Scale from Big Bang Nucleosynthesis. https://doi.org/10.1007/jhep06(2024)074

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