62 citations · 187 across the 4 of their papers we have counts for
4 papers
Effect of Long-lived Strongly Interacting Relic Particles on Big Bang Nucleosynthesis
Motohiko Kusakabe, Toshitaka Kajino, Takashi Yoshida +1
It has been suggested that relic long-lived strongly interacting massive particles (SIMPs, or particles) existed in the early universe. We study effects of such long-lived unst…
New Constraints on Radiative Decay of Long-Lived Particles in Big Bang Nucleosynthesis with New He Photodisintegration Data
Motohiko Kusakabe, Toshitaka Kajino, Takashi Yoshida +3
A recent measurement of He photodisintegration reactions, He(,)H and He(,)He with laser-Compton photons shows smaller cross sections than those esti…
A Simultaneous Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems from a Long-Lived Negatively-Charged Leptonic Particle
Motohiko Kusakabe, Toshitaka Kajino, Richard N. Boyd +2
The Li abundance observed in metal poor halo stars exhibits a plateau similar to that for Li suggesting a primordial origin. However, the observed abundance of Li is a…
Li Production by the Radiative Decay of Long-Lived Particles
Motohiko Kusakabe, Toshitaka Kajino, Grant J. Mathews
Recent spectroscopic observations of metal poor stars have indicated that both Li and Li have abundance plateaus with respect to the metallicity. Abundances of Li are a…