Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proton-Proton Fusion in Effective Field Theory to Fifth Order   The proton-proton fusion process p p->d e^+ nu_e is calculated at threshold
to fifth order in pionless effective field theory. There are two unknown
two-body currents contributing at the second and fourth orders. Combined with
the previous results for neutrino-deuteron and antineutrino-deuteron
scattering, computed to third order in the same approach, we conclude that a
10% measurement of reactor antineutrino-deuteron scattering measurement could
constrain the p p->d e^+ nu_e rate to ~7% while a ~3% measurement of nu_e d->
e^- p p could constrain the pp rate to ~2%.

18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat