New nuclear physics for big bang nucleosynthesis

作者：Boyd Richard N^*; Brune Carl R; Fuller George M; Smith Christel J

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 82(10): 105005.

DOI：10.1103/PhysRevD.82.105005

We discuss nuclear reactions which could play a role in big bang nucleosynthesis. Most of these reactions involve lithium and beryllium isotopes and the rates for some of these have not previously been included in BBN calculations. Few of these reactions are well studied in the laboratory. We also discuss novel effects in these reactions, including thermal population of nuclear target states, resonant enhancement, and nonthermal neutron reaction products. We perform sensitivity studies which show that even given considerable nuclear physics uncertainties, most of these nuclear reactions have minimal leverage on the standard BBN abundance yields of Li-6 and Li-7. Although a few have the potential to alter the yields significantly, we argue that this is unlikely.

• 出版日期2010-11-8