Observation of Top Quark Production in Proton-Nucleus Collisions

(CMS Collaboration)

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb-1. The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.

Original languageEnglish
Article number242001
JournalPhysical Review Letters
Volume119
Issue number24
DOIs
Publication statusPublished - Dec 14 2017

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quarks
nuclei
collisions
protons
center of mass
muons
standard deviation
quantum chromodynamics
luminosity
cross sections
predictions
electrons
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Observation of Top Quark Production in Proton-Nucleus Collisions. / (CMS Collaboration).

In: Physical Review Letters, Vol. 119, No. 24, 242001, 14.12.2017.

Research output: Contribution to journalArticle

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abstract = "The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb-1. The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.",
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AU - Asilar, E.

AU - Bergauer, T.

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AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

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AU - Hrubec, J.

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AU - Krätschmer, I.

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AU - Pree, E.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

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AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

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AU - De Wolf, E. A.

AU - Di Croce, D.

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AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

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