Big Bang Nucleosynthesis―“Trojan Horse Method” Approaching the “Cosmological Lithium Problem”

DOI

Bibliographic Information

Other Title
  • ビッグバン元素合成――「トロイの木馬法」で迫る「リチウム問題」

Abstract

<p>We determined the 7Be (n, p0)7Li, 7Be (n, p1)7Li* and 7Be (n, α)4He reaction cross sections by means of the Trojan Horse method which covered the big bang nucleosynthesis (BBN) energy range. The present and the previous data were analyzed by a multi-channel R-matrix fit, providing an improved error evaluation of the (n, p0) channel and the first-ever quantification of the (n, p1) contribution. The reaction rate summing both the present (n, p0) and (n, p1) contributions imposes a new constraint on the 7Li abundance in the BBN calculation, which offers a “free 7Li reduction” to further theoretical challenges to the long-standing cosmological lithium problem.</p>

Journal

  • Butsuri

    Butsuri 77 (8), 547-552, 2022-08-05

    The Physical Society of Japan

Details 詳細情報について

  • CRID
    1390574445219621632
  • DOI
    10.11316/butsuri.77.8_547
  • ISSN
    24238872
    00290181
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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