Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Seeing in Color: Jet Superstructure   A new class of observables is introduced which aims to characterize the
superstructure of an event, that is, features, such as color flow, which are
not determined by the jet four-momenta alone. Traditionally, an event is
described as having jets which are independent objects; each jet has some
energy, size, and possible substructure such as subjets or heavy flavor
content. This description discards information connecting the jets to each
other, which can be used to determine if the jets came from decay of a color
singlet object, or if they were initiated by quarks or gluons. An example
superstructure variable, pull, is presented as a simple handle on color flow.
It can be used on an event-by-event basis as a tool for distinguishing
previously irreducible backgrounds at the Tevatron and the LHC.

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The categories of this paper are: dg-ga
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
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The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
21
The categories of this paper are: adap-org