Revised Big Bang Nucleosynthesis with long-lived negatively charged massive particles: updated recombination rates, primordial $^9$Be nucleosynthesis, and impact of new $^6$Li limits

  title={Revised Big Bang Nucleosynthesis with long-lived negatively charged massive particles: updated recombination rates, primordial \$^9\$Be nucleosynthesis, and impact of new \$^6\$Li limits},
  author={Motohiko Kusakabe and K. S. Kim and Myung-Ki Cheoun and Toshitaka Kajino and Yasushi Kino and Grant J. Mathews},
  journal={Astrophysical Journal Supplement Series},
We extensively reanalyze the effects of a long-lived, negatively charged massive particle, X {sup –}, on big bang nucleosynthesis (BBN). The BBN model with an X {sup –} particle was originally motivated by the discrepancy between the {sup 6,} {sup 7}Li abundances predicted in the standard BBN model and those inferred from observations of metal-poor stars. In this model, {sup 7}Be is destroyed via the recombination with an X {sup –} particle followed by radiative proton capture. We calculate… 
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