Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Big-bang nucleosynthesis with sub-GeV massive decaying particles   We consider the effects of the injections of energetic photon and electron
(or positron) on the big-bang nucleosynthesis. We study the photodissociation
of light elements in the early Universe paying particular attention to the case
that the injection energy is sub-GeV and derive upper bounds on the primordial
abundances of the massive decaying particle as a function of its lifetime. We
also discuss a solution of the $^7$Li problem in this framework.

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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th