Publication: Search for W Boson Decays to Three Charged Pions
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American Physical Society (APS)
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Abstract
For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3 fb$^{-1}$, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01$\times$10$^{-6}$ is set at 95% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.
Physical review letters 122(15), 151802 (2019). doi:10.1103/PhysRevLett.122.151802
Published by APS, College Park, Md.
Physical review letters 122(15), 151802 (2019). doi:10.1103/PhysRevLett.122.151802
Published by APS, College Park, Md.
Description
Subject
lepton, GeV-cms, Muon, standard model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Hadron-Hadron scattering (experiments), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], hardware, Particle Physics Experiments, Modular electronics, info:eu-repo/classification/ddc/530, Pair Production, Hadron colliders, [Anahtar Kelime Yok], Data, High energy physics, Experimental particle physics, LHC, CMS, Physics, Beyond two generations, Excited top quark, Hadron-Hadron scattering (experiments), Supersymmetry, Beyond Standard Model, Lepton production, Data acquisition concepts, Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases), Modular electronics, Optical detector readout concepts, Particle Physics Experiments, Data, Higgs, Muon, Multidisciplinary, CMS, Physics, ddc:530, Lepton production, Beyond two generations, W --> 3pi, CERN LHC Coll, W: rare decay, Physical Sciences, Physique des particules élémentaires, Centre for High Energy Physics, PARTICLE PHYSICS, LHC, databases), S043.13, p p: scattering, architecture, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], PAIR PRODUCTION, Physics, Multidisciplinary, FOS: Physical sciences, Fizik, algorithms, CMS, proton-proton collision, W, Excited top quark, Optical detector readout concepts, Particle Physics, LHC, W Boson, Rare Decays, CMS, W & Z bosons, High energy physics, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, W: hadronic decay, W -->, pi, Science & Technology, Physics, LHC, CMS, PARTICLE PHYSICS, LARGE HADRON COLLIDER, CMS, pi: multiple production, background, Detector control systems (detector and experiment monitoring and slow-control systems, Data acquisition concepts, Física, W: branching ratio: upper limit, LARGE HADRON COLLIDER, Hadron, Beyond Standard Model, Elementary Particles and Fields, Supersymmetry, Particle decays, Experimental particle physics, p p: colliding beams, Higgs, experimental results