International Symposium on Nuclei in the Cosmos XVIII (NIC XVIII)

Session

Big-Bang Nucleosynthesis and Early Universe

18 Jun 2025, 08:45

Girona

344. Big Bang Nucleosynthesis and Early Universe

Brian D. Fields

18/06/2025, 08:45

Invited Review Talk

2. Neutron induced reactions for BBN: the Trojan Horse approach

Rosario Gianluca Pizzone (University of Catania and Istituto Nazionale di Fisica Nucleare)

18/06/2025, 09:15

Contributed Talk

Nuclear reactions induced by neutrons play a key role in several astrophysical scenario like primordial nucleosynthesis, s and r process and so on. From an experimental point of view, their reaction cross sections and reaction rates at astrophysically relevant temperatures are usually a hard task to be measured directly. Nevertheless big efforts in the last decades have led to a better...

30. Ending the second cosmological Li problem

Ella Wang (Stockholm University)

18/06/2025, 09:30

Contributed Talk

Lithium is the heaviest element produced during Big Bang nucleosynthesis. The amount produced can be predicted through the cosmic microwave background and measured through old metal-poor stars. Li has two stable isotopes, with Li-7 being more abundant than Li-6. In particular, the detection of Li-6 in old metal-poor halo stars contradicts the Big Bang nucleosynthesis prediction by 5 orders of...