Publication: Observation of Top Quark Production in Proton-Nucleus Collisions
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American Physical Society (APS)
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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 $\sqrt{s_\mathrm{NN}} =$ 8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb$^{-1}$. The significance of the $\mathrm{t}\overline{\mathrm{t}}$ signal against the background-only hypothesis is above five standard deviations. The measured cross section is $\sigma_{\mathrm{t}\overline{\mathrm{t}}} =$ 45$\pm$8 nb, consistent with predictions from perturbative quantum chromodynamics.
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electron, Compact Muon Solenoid, Standard Model, Ppb Collisions, Large Hadron Collider (LHC), nucl-ex, TOP QUARK, PPB COLLISIONS, LHC, CMS EXPERIMENT, lepton & quark production, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), nucleon nucleon, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], LHC, CMS, top, Nuclear Experiment (nucl-ex), Boson Production, Nuclear Experiment, Multidisciplinary, Physical Sciences, CMS, Physics, top: production, GeV-cms/nucleon, Photon, PPB COLLISIONS, General Physics and Astronomy, Physical sciences, CERN LHC Coll, Q1 Science (General) / természettudomány általában, Physical Sciences, CMS Collaboration, Physique des particules élémentaires, High energy physics, Experimental particle physics, LHC, CMS, Standard Model, Centre for High Energy Physics, PARTICLE PHYSICS, Nuclear reactions, LHC, jet: bottom, Boson Production, PPB Collisions, ddc:620, General Physics, CERN Lab, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Physics, Multidisciplinary, FOS: Physical sciences, Physics Institute, Fizik, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Physics and Astronomy (all), muon, Relativistic heavy-ion collisions, quantum chromodynamics, BOSON PRODUCTION, PPB COLLISIONS, LHC, TEV, High energy physics, p nucleus: scattering, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, Particle & resonance production, Engineering & allied operations, Nuclear Physics, BOSON PRODUCTION, info:eu-repo/classification/ddc/550, Science & Technology, PARTICLE PHYSICS, LARGE HADRON COLLIDER, CMS, hep-ex, LHC, top quark, proton-nucleus, cross section: measured, LARGE HADRON COLLIDER, Physics and Astronomy, Quantum theory, TEV, p nucleus, BOSON PRODUCTION, PPB COLLISIONS, LHC, TEV., Experimental particle physics, info:eu-repo/classification/ddc/620, experimental results