Search for anomalous top quark production at the early LHC

Details Search for anomalous top quark production at the early LHC Search for anomalous top quark production at the early LHC

2011-04-26

arxiv.org/abs/1104.4945v3

Phys. Rev. Lett. 107, 092002 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures, version appears in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.107.092002

We present a detailed study of the anomalous top quark production with subsequent decay at the LHC induced by model-independent flavor-changing neutral-current couplings, incorporating the complete next-to-leading order QCD effects. Our results show that, taking into account the current limits from the Tevatron, the LHC with $\sqrt{s}=7$ TeV may discover the anomalous coupling at 5$\sigma$ level for a very low integrated luminosity of 61 pb$^{-1}$. The discovery potentials for the anomalous couplings at the LHC are examined in detail. We also discuss the possibility of using the charge ratio to distinguish the $tug$ and $tcg$ couplings.

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