Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays To Z Boson Pairs
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Karapınar, Güler
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Yes
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Abstract
A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17: 3 fb(-1), collected by the CMS experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, is used. The measured mass in the ZZ channel, where both Z bosons decay to e or mu pairs, is 126: 2 +/- 0.6(stat) +/- 0. 2(syst) GeV. The angular distributions of the lepton pairs in this channel are sensitive to the spin-parity of the boson. Under the assumption of spin 0, the present data are consistent with the pure scalar hypothesis, while disfavoring the pure pseudoscalar hypothesis. DOI: 10.1103/PhysRevLett.110.081803
Description
PubMed: 23473131
Keywords
550, Z Bosons, Angular distribution, Tellurium compounds, Bosons, Lepton pairs, Nuclear Physic, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Theoretical Physics, Theoretical, Models, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], info:eu-repo/classification/ddc/530, Fisica delle particelle, [Anahtar Kelime Yok], CMS, Physics, ddc:530, Search, Nuclear Physics; Elementary Particles; Models, Theoretical; Physics and Astronomy (all), CERN LHC Coll, Particles, Physique des particules élémentaires, PARTICLE PHYSICS, LHC, Angular distribution, physics, Elementary Particles, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], leptons, Higgs boson, cms, Elementary Particle, Nuclear Physics; Elementary Particles; Models, Theoretical; Medicine (all); Physics and Astronomy (all), FOS: Physical sciences, Z Bosons, 530, Tellurium compounds, Center-of-mass energies, Physics and Astronomy (all), nuclear physics, SEARCH, 539, BROKEN SYMMETRIES, PARTICLES, elementary particle, Bosons, Nuclear Physics, Integrated luminosity, info:eu-repo/classification/ddc/550, Proton proton collisions, high energy collider; LHC; CMS; Higgs, Física, LHC; CMS; PP COLLISIONS; HIGGS BOSON; SPIN-PARITY; MASS, Models, Theoretical, LARGE HADRON COLLIDER, Broken symmetries, LHC; CMS; Higgs, MODEL, QC Physics / fizika, LEPTONS, Model, Higgs
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01 natural sciences, 0103 physical sciences
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110
Issue
8
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