Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-11-29
Phys.Lett.B371:117-125,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, plain Latex. 5 figures (7 postscript files) included. Compressed postscript file of text and figures will be availab
Scientific paper
10.1016/0370-2693(95)01594-9
We calculate top pair production and decay at the Tevatron $p\bar p$ collider, with the emission of an extra gluon, and study the corresponding $W+5$\,jet top signals including full spin correlations in the $W \to \ell\nu$ leptonic and $W\to jj$ hadronic decays. We study the feasibility of reconstructing $W+5$\,jet top events with a single $b$-tag, including realistic energy resolution. Our suggested basic procedure based on kinematic fitting achieves about 74\% reconstruction efficiency, with 74\% of the reconstructed events correctly classified (purity); this improves to 82\% efficiency with 77\% purity in double-$b$-tagged events. We suggest possible refinements, based on virtuality criteria, that give higher purity at the cost of lower reconstruction efficiency.
Barger Vernon
Mercadante Pedro G.
Phillips Roger J. N.
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