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Big Bang nucleosynthesis revisited via Trojan Horse Method measurements

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arxiv 1403.4909 v1 pith:7FXMKD6F submitted 2014-03-19 nucl-ex astro-ph.COnucl-th

Big Bang nucleosynthesis revisited via Trojan Horse Method measurements

R.G. Pizzone , R. Sparta , C.A. Bertulani , C. Spitaleri , M. La Cognata , J. Lalmansingh , L. Lamia , A. Mukhamedzhanov
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A. Tumino
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keywords nucleosynthesisinputprimordialbangcalculationscomparedcrossdirect
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Nuclear reaction rates are among the most important input for understanding the primordial nucleosynthesis and therefore for a quantitative description of the early Universe. An up-to-date compilation of direct cross sections of 2H(d,p)3H, 2H(d,n)3He, 7Li(p,alpha)4He and 3He(d,p)4He reactions is given. These are among the most uncertain cross sections used and input for Big Bang nucleosynthesis calculations. Their measurements through the Trojan Horse Method (THM) are also reviewed and compared with direct data. The reaction rates and the corresponding recommended errors in this work were used as input for primordial nucleosynthesis calculations to evaluate their impact on the 2H, 3,4He and 7Li primordial abundances, which are then compared with observations.

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