Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of the nucleon-nucleon collision geometry on the determination
  of the nuclear modification factor for nucleon-nucleus and nucleus-nucleus
  collisions   The influence of the underlying nucleon-nucleon collision geometry on
evaluations of the nuclear overlap function ($T_{AB}$) and number of binary
collisions ($N_{coll}$) is studied. A narrowing of the spatial distribution of
the hard-partons with large light-cone fraction $x$ in nucleons leads to a
downward correction for $N_{coll}$ and $T_{AB}$, which in turn, results in an
upward correction for the nuclear modification factor $R_{AB}$. The size of
this correction is estimated for several experimentally motivated
nucleon-nucleon overlap functions for hard-partons. It is found to be
significant in peripheral nucleus-nucleus and nucleon-nucleus collisions, and
are much larger at the LHC energy of $\sqrt{s}=5.5$ TeV than for the RHIC
energy of $\sqrt{s}$=200 GeV. The implications for experimental measurements
are also discussed.

33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph