566 citations · 1.4k across the 19 of their papers we have counts for
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hep-ph2009★ 38 cited
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…
astro-ph.SR2009★ 18 cited
138La-138Ce-136Ce nuclear cosmochronometer of supernova neutrino process
Takehito Hayakawa, Toshiyuki Shizuma, Toshitaka Kajino +2
The 138La (T1/2=102 Gyr) - 138Ce - 136Ce system is proposed to be used as a nuclear cosmochronometer for measuring the time elapsed from a supernova neutrino process. This chronome…