Searches for New Physics Using the T(t)over-Bar Invariant Mass Distribution in Pp Collisions at Root S=8 Tev
Searches for New Physics Using the T(t)over-Bar Invariant Mass Distribution in Pp Collisions at Root S=8 Tev
Abstract
Searches for anomalous top quark-antiquark production are presented, based on pp collisions at root s = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb(-1), were collected with the CMS detector at the LHC. The observed t (t) over bar invariant mass spectrum is found to be compatible with the standard model prediction. Limits on the production cross section times branching fraction probe, for the first time, a region of parameter space for certain models of new physics not yet constrained by precision measurements.
Description
Keywords
550, final state: ((n)jet), LHC. CMS; new physics; tt-bar, Invariant mass distribution, LHC Coll, 950, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), mass spectrum: (top anti-top), Top quarks production, Parameter spaces, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Branching fractions, info:eu-repo/classification/ddc/530, Z': hadronic decay, Fisica delle particelle, 8000 GeV-cms, CMS, new physics, Physics, STANDARD MODEL; DECAY; HIERARCHY; BOSON; LHC, ddc:530, BOSON, p p collision, 004, channel cross section: branching ratio: upper limit, The standard model, HIERARCHY, CERN LHC Coll, track data analysis: jet, Physique des particules élémentaires, LHC; CMS; HEP, Medicine (all); Physics and Astronomy (all), PARTICLE PHYSICS, LHC, top: pair production, physics, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], cms, mass: lower limit, STANDARD MODEL, FOS: Physical sciences, final state: ((n)jet lepton), 530, Physics and Astronomy (all), resonance: search for, STANDARD MODEL; HIERARCHY; LHC; p p collisions; CMS; Top quarks production, Integrated luminosity, info:eu-repo/classification/ddc/550, Mass spectrometry, Precision measurement, The standard model, Mass spectrometry, Tellurium compounds,references, Física, LARGE HADRON COLLIDER, gluon: Kaluza-Klein, Production cross section, Invariant-mass spectra, QC Physics / fizika, Tellurium compounds,references, DECAY, top: boosted particle
Fields of Science
01 natural sciences, 0103 physical sciences
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OpenCitations Citation Count
89
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Volume
111
Issue
21
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