Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quenching of high-pT hadrons: Alternative scenario   A new scenario, alternative to energy loss, for the observed suppression of
high-pT hadrons observed at RHIC is proposed. In the limit of a very dense
medium crated in nuclear collisions the mean free-path of the produced
(pre)hadron vanishes, and and the nuclear suppression, R_{AA} is completely
controlled by the production length. The RHIC data are well explained in a
parameter free way, and predictions for LHC are provided.

11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas