Difference between revisions of "Multijet background"
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In experimental [[hadron collider]] physics, '''multijet background''' refers to [[background]] [[Event|events]] whose only [[genuine]] feature are any number of [[Jet|jets]] and other [[hadronic activity]]. The jets are usually [[Strong production|strongly produced]] and not the [[Decay|decay products]] of [[Heavy resonance|heavy resonances]]. Therefore, multijet background is also referred to as '''[[QCD]] background''' or '''hadronic background'''. | In experimental [[hadron collider]] physics, '''multijet background''' refers to [[background]] [[Event|events]] whose only [[genuine]] feature are any number of [[Jet|jets]] and other [[hadronic activity]]. The jets are usually [[Strong production|strongly produced]] and not the [[Decay|decay products]] of [[Heavy resonance|heavy resonances]]. Therefore, multijet background is also referred to as '''[[QCD]] background''' or '''hadronic background'''. | ||
Latest revision as of 16:39, 29 November 2016
In experimental hadron collider physics, multijet background refers to background events whose only genuine feature are any number of jets and other hadronic activity. The jets are usually strongly produced and not the decay products of heavy resonances. Therefore, multijet background is also referred to as QCD background or hadronic background.
In analyses selecting objects other than jets, multijet events can appear as background due to misidentification. Because multijet events are much more common than most other processes, the multijet background can be large despite very small misidentification rates.
