Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Participants Number Fluctuations for Given Centrality AA-Interactions
  in the Classical Glauber Approach   In the framework of the classical Glauber approach the exact analytical
expression for the variance of the number of participants (wounded nucleons)
for given centrality AA interactions is presented. It's shown, that in the case
of nucleus-nucleus collisions along with the optical approximation term the
additional "contact" term appears. The numerical calculations for PbPb
collisions at SPS energies show that at intermediate values of the impact
parameter the "optical" and "contact" terms contributions to the variance of
the participants number are of the same order and their sum is in a good
agreement with the results of independent MC simulations of this process. The
correlation between the numbers of participants in colliding nuclei is taken
into account. In particular it's demonstrated that in PbPb collisions at SPS
energies the variance of the total number of participants approximately three
times exceeds the Poisson one in the impact parameter region 10-12 Fm. The
fluctuations of the number of collisions are also discussed.

10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga