Like Sign Top Pair Production at LHC

Details Like Sign Top Pair Production at LHC Like Sign Top Pair Production at LHC

1997-05-26

arxiv.org/abs/hep-ph/9705424v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, use sprocl.sty and psfig.tex; invited talk presented at the Third International Workshop on Particle Physics Phenomen

Scientific paper

Having a mass comparable to the weak scale, the top quark may have a sizable flavor changing couplings to Higgs bosons. We show that such couplings can be probed at the LHC through the parton subprocess $c(\bar c)g \to t (\bar t)A^0$, where the pseudoscalar $A^0$ subsequently decays into $t \bar c$ or ${\bar t} c$, giving rise to the intriguing final state of like sign top quark pairs. We also discuss major backgrounds to the above signal, in particular the QCD-Weak process $q\bar q' \to W^+(W^-) t \bar t$. The issue of background reduction is briefly discussed.

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