Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local nuclear slope and curvature in high energy $pp$ and $\bar pp$
  elastic scattering   The local nuclear slope $B(s,t) = {d \over d t} (\ln {d\sigma_n (s,t)\over
dt})$ is reconstructed from the experimental angular distributions with a
procedure that uses overlapping $t$-bins, for an energy that ranges from the
ISR to the $S\bar ppS$ and the Tevatron. Predictions of several models of
($p,p$) and ($\bar p,p$) elastic scattering at high energy are tested in
$B(s,t)$ at small $|t|$. Only a model with two-components Pomeron and Odderon
gives a satisfactory agreement with the (non fitted) slope data, in particular
for the evolution of $B(s,t)$ with $s$ as a function of $t$ in $\bar pp$
scattering. This model predicts a similar behavior for $pp$ and $\bar pp$
scattering at small $|t|$. A detailed confirmation for $pp$ collisions would be
expected from RHIC.

32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg