OMEG 2017, International Symposium on Origin of Matter and Evolution of Galaxies, Daejeon, Korea, JUNE 27-30, 2017

Session

Session 7 (Chair: K. Chae)

29 Jun 2017, 09:30

Hotel ICC, Daejeon, Korea

76. Experimental challenge to the big-bang nucleosynthesis

Shigeru Kubono

29/06/2017, 09:30

Oral Presentation

The primordial nucleosynthesis(BBN) right after the big bang (BB) is one of the key elements that support the BB model. The BBN is well known that it produced primarily light elements, and explains reasonably most of the element abundances. However, there remains some interesting and serious questions. One is an abundance problem, called the Li problem. The BBN simulations using recent...

77. Nuclear astrophysics experiments with reaccelerated beams at NSCL

Tony Ahn

29/06/2017, 09:55

Oral Presentation

79. Measurements of the neutron-induced reactions on 7Be with CRIB by the Trojan Horse method

Seiya Hayakawa

29/06/2017, 10:20

Oral Presentation

It has been known that the prediction of the primordial $^7$Li abundance by the standard Big-Bang Nucleosynthesis (BBN) model is about 3 times larger than the observation, so called the cosmological $^7$Li problem. The $^7$Li abundance strongly depends on the $^7$Be production. The $^7$Be$(n, p)^7$Li reaction is considered as the main process to destroy $^7$Be during the BBN. Although its...

113. The effects of time-dependent non-thermal distribution on the lithium problem of BBN

Tae-Sun Park (Sungkyunkwan University)

29/06/2017, 10:40

Oral Presentation

Aiming to resolve the so called lithium problem, we investigate the possibility that a small fraction of primordial particles can have non-thermal distribution for a short period of time of the BBN evolution. Our model is described by four parameters, which account the amount of fraction, the position and the width of time for the appearance of the particles, and the shape of the non-thermal...