Seeing in Color: Jet Superstructure

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Seeing in Color: Jet Superstructure

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Title: Seeing in Color: Jet Superstructure
Author: Gallicchio, Jason; Schwartz, Matthew D

Note: Order does not necessarily reflect citation order of authors.

Citation: Gallicchio, Jason and Matthew D. Schwartz. 2010. Seeing in color: Jet superstructure. Physical Review Letters 105(2): 022001.
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Abstract: 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.
Published Version: doi:10.1103/PhysRevLett.105.022001
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