Physics
Scientific paper
Apr 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012phrvc..85d4602d&link_type=abstract
Physical Review C, vol. 85, Issue 4, id. 044602
Physics
Optical And Diffraction Models, Direct Reactions, Low And Intermediate Energy Heavy-Ion Reactions, Big Bang Nucleosynthesis
Scientific paper
In this paper, we study the connection between the interaction and the low energy observables, in particular the cross section for He and HeX, the helium nucleus with a heavier particle attached, to explain problems with the observed lithium abundance in the big-bang nucleosynthesis. We treat the processes 4He+2H→6Li+γ and 4HEX‑+2H→6Li+X‑ and primarily focus on the effects of the long-range part of the total potential on the cross section. Our results indicate that relatively small changes in the long-range part of the potential can have a profound affect. Additionally, we compare the relative impacts on the low energy cross section of the Coulomb barrier peak and the long-range part of the interaction. Our results confirm that the long-range potential dominantly influences the low energy observables.
Baha Balantekin A.
Boztosun Ismail
Kocak G.
Đapo H.
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