Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-02-05
JHEP 0703:063,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 12 figures, small improvements, version to appear in JHEP
Scientific paper
10.1088/1126-6708/2007/03/063
A search for a fourth family at the LHC is presently a low priority, but we argue that an effective search can be conducted early with only a few inverse femtobarns of data. We discuss a method based on invariant masses of single jets for identifying the $W$'s originating from heavy quark decays. This can significantly increase signal to background in the reconstruction of the $t'$ mass. We also study the various types of physics that can impact the background estimate, most notably higher order effects, initial state radiation, and models of the underlying event.
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