Measurement of the Mass Difference Between Top Quark and Antiquark in Pp Collisions at S=8 Tev
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Date
2017
Authors
Karapınar, Güler
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd.
Open Access Color
GOLD
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Yes
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3
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Abstract
The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Δmt=mt−mt‾) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb−1collected by the CMS experiment at the LHC, and yields a value of Δmt=−0.15±0.19(stat)±0.09(syst) GeV, which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements.
Description
Keywords
Large Hadron Collider (LHC), Compact Muon Solenoid, CMS; Top quark physics; Nuclear and High Energy Physics, Compact Muon Solenoid, ddc:000, CMS; Top quark physics;, standard model, information & general works, bottom: particle identification, Q007CPT, Large Hadron Collider (LHC), Physics, Particles & Fields, high energy physics, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Top quark physic, colliding beams, Computer science, information & general works, info:eu-repo/classification/ddc/530, Top quark physics, 8000 GeV-cms, 000, Cms, CMS, Physics, BOSON, 320, Nuclear & Particles Physics, CMS; Top quark physics; CPT VIOLATION; MODEL, Physics, Nuclear, CERN LHC Coll, Physical Sciences, PARTICLE PHYSICS, CPT: conservation law, LHC, top: pair production, Nuclear and High Energy Physics, data analysis method, p p: scattering, info:eu-repo/classification/ddc/000, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], cms, QC1-999, Particles & Fields, final state: ((n)jet lepton), FOS: Physical sciences, CERN-HLC Coll, Astronomy & Astrophysics, 530, antiparticle: mass, 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, mass difference: (top anti-top): measured, Nuclear, particle physics, invariance: CPT, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, experimental particle physics, Science & Technology, hep-ex, PARTICLE PHYSICS;LARGE HADRON COLLIDER;CMS, anti-top: mass, Top Quark Physics, Molecular, high energy physics ; experimental particle physics ; LHC ; CMS ; standard model, mass difference, LARGE HADRON COLLIDER, Computer science, MODEL, pair production, Physics and Astronomy, CPT VIOLATION, CMS; Top quark physics, 0202 Atomic, Particle And Plasma Physics, particle identification, p p: colliding beams, experimental results
Fields of Science
01 natural sciences, 0103 physical sciences
Citation
Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T.,...CMS Collaboration (2017). Measurement of the mass difference between top quark and antiquark in pp collisions at √s=8 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 770, 50-71. doi:10.1016/j.physletb.2017.04.028
WoS Q
Q1
Scopus Q
Q1
Source
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
770
Issue
Start Page
50
End Page
71
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