# BBN and Lambda_QCD

@inproceedings{Kneller2003BBNAL,
title={BBN and Lambda\_QCD},
author={James P. Kneller and Gail C. McLaughlin},
year={2003}
}
• Published 7 May 2003
• Physics
Big Bang Nucleosynthesis (BBN) has increasingly become the tool of choice for investigating the permitted variation of fundamental constants during the earliest epochs of the Universe. Here we present a BBN calculation that has been modified to permit changes in the QCD scale, Lambda_QCD. The primary effects of changing the QCD scale upon BBN are through the deuteron binding energy, B_D, and the neutron-proton mass difference, delta-m_np, which both play crucial roles in determining the…
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