Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jet Study in Ultra-Relativistic Heavy-Ion Collisions with the ALICE
  Detectors at the LHC   In ultra-relativistic heavy-ion collisions at $\sqrt{s_{NN}}$ = 5.5 TeV at
the ALICE experiment at the LHC, interactions between the high-$p_{T}$ partons
and the hot, dense medium produced in the collisions, are expected to lead to
jet energy loss (jet-quenching) resulting in changes in the jet fragmentation
functions as compared to the unquenched case. In order to reconstruct jet
fragmentation functions, accurate information on the jet energy, direction and
momentum distribution of the jet particles is needed. This thesis presents
first results on jet reconstruction in simulated Pb+Pb collisions using the
ALICE detectors and a UA1-based cone jet finding algorithm which has been
modified and optimised to reconstruct high-$p_{T}$ jets on an event-by-event
basis. Optimisation of the algorithm parameters and methods used to suppress
the large background energy contribution while maximising the algorithm
efficiency, are discussed and the resulting jet energy and direction
resolutions are presented. Accurate jet reconstruction will allow measurement
of the jet fragmentation functions and consequently the degree of quenching and
therefore provide insight on the properties of the hot and dense medium (for
example the initial gluon density) created in the collisions.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph