Observation of Electroweak Production of Same-Sign W Boson Pairs in the Two Jet and Two Same-Sign Lepton Final State in Proton-Proton Collisions at s=13 TeV

2017/09/30 by CMS Collaboration, A. M. Sirunyan, A. Tumasyan +98 · 155 citations
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Electron #Electroweak interaction #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Luminosity #Muon #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Rapidity #Standard Model (mathematical formulation) #Vector boson #hep-ex

paper · pdf · doi:10.1103/physrevlett.120.081801

published in Physical Review Letters 120(8), 081801 (American Physical Society) · Replaced with the published version. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-17-004/ (CMS Public Pages)

openalex created_date 2017/10/06 · openalex publication_date 2018/02/22 · arxiv created 2018/03/11 · arxiv updated 2018/03/13 · openalex updated_date 2026/08/06

Abstract

The first observation of electroweak production of same-sign W boson pairs in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 35.9 fb^-1 collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. Events are selected by requiring exactly two leptons (electrons or muons) of the same charge, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass. The observed significance of the signal is 5.5 standard deviations, where a significance of 5.7 standard deviations is expected based on the standard model. The ratio of measured event yields to that expected from the standard model at leading order is 0.90±0.22. A cross section measurement in a fiducial region is reported. Bounds are given on the structure of quartic vector boson interactions in the framework of dimension-8 effective field theory operators and on the production of doubly charged Higgs bosons.

Citations

• pp→jje±μ±ννandjje±μ∓ννatO(αem6)andO(αem4αs2)for the study of the quartic electroweak gauge boson vertex at CERN LHC
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• Dispelling the N3 myth for the kt jet-finder
• Probing color-singlet exchange inZ+2-jet events at the CERN LHC

Cited by

• Vector boson fusion and scattering results from CMS
• Higgs triplet extension of GRACE
• Polarized vector boson scattering in the fully leptonic WZ and ZZ channels at the LHC
• Polarization fraction measurement in same-sign WW scattering using deep learning
• H5±±h0 production via vector-boson fusion in the Georgi-Machacek model at hadron colliders
• Sensitivity to longitudinal vector boson scattering in semileptonic final states at the HL-LHC
• Comparing traditional and deep-learning techniques of kinematic reconstruction for polarization discrimination in vector boson scattering