Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of the unusual structure in the pp correlation from Pb+Pb
  collisions at 158 AGeV   The recent NA49 measurement of two-proton correlation function shows an
interesting and unexpected structure at large relative momentum. Applying
source imaging techniques to the measurement, we find an unusually steep
drop-off in the two-proton source function. We show that the steep drop-off is
due to the structure in the correlation and the drop-off cannot be explained
using conventional correlation analysis. We suggest possible physics reasons
for the unusual source function.

14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th