Precision Measurement with Diboson at the LHC

Abstract

Precision measurements at the LHC can provide probes of new physics, and they are complementary to direct searches. The high energy distribution of di-boson processes ($WW,WZ,Vh$) is a promising place, with the possibility of significant improvement in sensitivity as the data accumulates. We focus on the semi-leptonic final states, and make projections of the reach for future runs of the LHC with integrated luminosities of 300 fb${}^{-1}$ and 3 ab${}^{-1}$. We emphasize the importance of tagging the polarization of the vector bosons, in particular for the $WW$ and $WZ$ channels. We employ a combination of kinematical distributions of both the $W$ and $Z$, and their decay products to select the longitudinally polarized $W$ and $Z$. We have also included our projections for the reach using the associated production of vector boson and the Higgs. We demonstrate that di-boson measurement in the semi-leptonic channel can surpass the sensitivity of the precision measurement at LEP, and they can be significantly more sensitive than the HL-LHC $h\to Z\gamma$ measurements. Compared with fully leptonic decaying $WZ$ channel, the reach from semi-leptonic channel can be better with effective suppression of the reducible background and systematic error. We have also considered the reaches on the new physics mass scale in different new physics scenarios, including the Strongly Interacting-Light Higgs (SILH), the Strongly Coupled Multi-pole Interaction (Remedios), and the class of models with partially composite fermions. We find that in the SILH and non-compact Remedios scenario with large coupling $g_{\ast }>7$, measurements in the di-boson channel is more sensitive than the Drell-Yan di-lepton channel at the HL-LHC.

29 pages, 6 figures

References in corpus (19)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Jet substructure as a new Higgs search channel at the LHC
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
• Updated Global SMEFT Fit to Higgs, Diboson and Electroweak Data
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Model-independent precision constraints on dimension-6 operators
• Helicity Selection Rules and Non-Interference for BSM Amplitudes
• Vices and Virtues of Higgs EFTs at Large Energy
• Anomalous Triple Gauge Couplings in the Effective Field Theory Approach at the LHC
• Identification techniques for highly boosted W bosons that decay into hadrons
• Current and future constraints on Higgs couplings in the nonlinear Effective Theory
• Electroweak Precision Tests in High-Energy Diboson Processes
• Novel measurements of anomalous triple gauge couplings for the LHC
• An NLO QCD effective field theory analysis of $W_{}^{+}{W}_{}^{-}$ production at the LHC including fermionic operators
• Precision Probes of QCD at High Energies
• The Other Fermion Compositeness
• Anomalous triple-gauge-boson interactions in vector-boson pair production with RECOLA2
• Measurement of $WW/WZ\to \ell \nu q{q}^{\prime }$ production with the hadronically decaying boson reconstructed as one or two jets in $pp$ collisions at $\sqrt{s}=8$ TeV with ATLAS, and constraints on anomalous gauge couplings
• Combined analysis of jet substructure for Higgs decay to $b\bar{b}$ in vector boson associated production at the 13 TeV LHC

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• NLO QCD+NLO EW corrections to diboson production matched to parton shower
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• NLO QCD corrections to polarised di-boson production in semi-leptonic final states
• Colorful Imprints of Heavy States in the Electroweak Effective Theory
• Precision from the diphoton Zh channel at FCC-hh
• The Radiation Valley and Exotic Resonances in $W\gamma$ Production at the LHC
• Diboson production in the SMEFT from gluon fusion
• Evidence of pair production of longitudinally polarised vector bosons and study of CP properties in $ZZ\to 4\ell$ events with the ATLAS detector at $\sqrt{s}=13$ TeV
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• Revisiting $\mathbf{Vh}(\to \mathbf{b}\bar{\mathbf{b}})$ at the LHC and FCC-hh
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• Polarized-boson pairs at NLO in the SMEFT
• Probing Flavor Non-Universal Theories Through Higgs Physics at the LHC and Future Colliders
• Studies of the energy dependence of diboson polarization fractions and the Radiation Amplitude Zero effect in WZ production with the ATLAS detector
• Detecting anomaly in vector boson scattering
• A $W^{\pm }$ polarization analyzer from Deep Neural Networks
• Improved BSM Sensitivity in Diboson Processes