The first search for single-top-quark production from the exchange of an s-channel virtual W boson using events with an imbalance in the total transverse energy, b-tagged jets, and no identified leptons is presented. Assuming the electroweak production of top quarks of mass 172.5 GeV/c(2) in the s channel, a cross section of 1.12(-0.57)(+0.61) (stat + syst) pb with a significance of 1.9 standard deviations is measured. This measurement is combined with the result obtained from events with an imbalance in total transverse momentum, b-tagged jets, and exactly one identified lepton, yielding a cross section of 1.36(-0.32)(+0.37) (stat + syst) pb, with a significance of 4.2 standard deviations.

T., A., S., A., D., A., A., A., A., A., J., A., et al. (2014). Search for s-Channel Single-Top-Quark Production in Events with Missing Energy Plus Jets in p-pbar Collisions at sqrt(s)=1.96 TeV. PHYSICAL REVIEW LETTERS, 112(23) [10.1103/PhysRevLett.112.231805].

Search for s-Channel Single-Top-Quark Production in Events with Missing Energy Plus Jets in p-pbar Collisions at sqrt(s)=1.96 TeV

A. Cerri;MAESTRO, PAOLO;
2014-01-01

Abstract

The first search for single-top-quark production from the exchange of an s-channel virtual W boson using events with an imbalance in the total transverse energy, b-tagged jets, and no identified leptons is presented. Assuming the electroweak production of top quarks of mass 172.5 GeV/c(2) in the s channel, a cross section of 1.12(-0.57)(+0.61) (stat + syst) pb with a significance of 1.9 standard deviations is measured. This measurement is combined with the result obtained from events with an imbalance in total transverse momentum, b-tagged jets, and exactly one identified lepton, yielding a cross section of 1.36(-0.32)(+0.37) (stat + syst) pb, with a significance of 4.2 standard deviations.
2014
T., A., S., A., D., A., A., A., A., A., J., A., et al. (2014). Search for s-Channel Single-Top-Quark Production in Events with Missing Energy Plus Jets in p-pbar Collisions at sqrt(s)=1.96 TeV. PHYSICAL REVIEW LETTERS, 112(23) [10.1103/PhysRevLett.112.231805].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/47652
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