Conveners
Cosmology #2
- Masahiro Kawasaki (ICRR, University of Tokyo)
Prof.
Ofelia Pisanti
(University of Naples Federico II)
9/11/19, 4:40 PM
Cosmology
Oral presentation in parallel session
A fundamental requisite to get a precise determination of light nuclide primordial abundances is the correct evaluation of the nuclear reaction rates of the BBN reaction network, as well as the corresponding uncertainties. In particular, for the primordial deuterium the most important nuclear inputs are the deuteron-deuteron transfer reactions, D(D,n)3He and D(D,p)3H, and the D(p,gamma)3He...
Dr
Sergio Pastor
(IFIC (CSIC-Univ Valencia))
9/11/19, 5:00 PM
Cosmology
Oral presentation in parallel session
In the framework of a 3+1 scheme, we consider the thermalisation of sterile neutrinos in the early Universe taking into account the full 4x4 mixing matrix. The evolution of the neutrino energy distributions is found solving the momentum-dependent kinetic equations with full collision terms, as in our previous analyses of flavour neutrino decoupling in the standard case. The degree of...
Mr
Takuya Hasegawa
(KEK / Sokendai)
9/11/19, 5:20 PM
Cosmology
Oral presentation in parallel session
We determine the minimum value of the reheating temperature set by Big-Bang Nucleosynthesis by considering both radiative and hadronic decays of long-lived massive particles. In the current study, effects of neutrino oscillation and neutrino self-interaction are taken into account in the calculation of the neutrino thermalization. We adopt updated observational bounds on the primordial...
