Journal
PHYSICAL REVIEW D
Volume 87, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.114006
Keywords
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Funding
- US DOE [DE-AC02-06CH11357]
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We present results for the production of a Z boson in association with single top at next-to-leading order (NLO), including the decay of the top quark and the Z boson. This electroweak process gives rise to the trilepton signature l(+)l(-)l'(+/-) + jets + missing energy. We present results for this signature and show that the rate is competitive with the contribution of the mixed strong and electroweak production process, t (t) over barZ. As such it should be observable in the full data sample fromLHCrunning at root s = 8 TeV. The single top + Z process is a hitherto unconsidered irreducible background in searches for flavor changing neutral current decays of the top quark in t (t) over bar production. For a selection of cuts used at the LHC involving a b-tag it is the dominant background. In the Appendices we also briefly discuss the impact of NLO corrections on the related tH process.
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