Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An expression for the Mott cross section of electrons and positrons on
  nuclei with Z up t0 118   In the present work, an improved numerical solution for determining the
ratio,$\mathcal{R}^{\rm Mott}$, of the unscreened Mott differential cross
section (MDCS) with respect to Rutherford's formula is proposed for the
scattering of electrons and positrons on nuclei with $1\leq Z \leq 118$. It
accounts for incoming lepton energies between 1\,keV and 900\,MeV. For both
electrons and positrons, a fitting formula and a set of fitting coefficients
for the ratio $\mathcal{R}^{\rm Mott}$ on nuclei are also presented. The found
average error of the latter practical interpolated expression is typically
lower than 1% also at low energy for electrons and lower than 0.05% for
positrons for all nuclei over the entire energy range.

33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas