A Reduced basis for CP violation in SMEFT at colliders and its application to Diboson production

Abstract

We show that only 10 (17) CP-odd operators of the SMEFT give the leading, i.e. least suppressed by the new physics scale, CP-violating contributions once we assume that all fermions are massless but the top (and bottom) quark(s). We start with a short review of previous analyses focusing on operators of our reduced basis and list different observables probing their CP violating effects by direct measurements at colliders and by indirect measurements in low-energy observables. Since CP-odd operators typically lead to phase space suppressed interferences, we quantify the efficiency to revive the interference for various observables found in the literature but also for new observables in diboson production. Our new observables are found to be more efficient on the whole experimental fiducial phase space and are complementary to those presented so far as they probe different combinations of operators and get their sensitivities from different regions of the phase space.

References in corpus (18)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Matter and Antimatter in the Universe
• ZZ production at hadron colliders in NNLO QCD
• A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
• Helicity Selection Rules and Non-Interference for BSM Amplitudes
• Anomalous Triple Gauge Couplings in the Effective Field Theory Approach at the LHC
• LHC multijet events as a probe for anomalous dimension-six gluon interactions
• Measurement of the WZ production cross section in pp collisions at sqrt(s) = 13 TeV
• Anomalous Higgs couplings in angular asymmetries of H --> Zl+l- and e+e- --> HZ
• Measurements of the pp $\to$ WZ inclusive and differential production cross section and constraints on charged anomalous triple gauge couplings at $\sqrt{s}=$ 13 TeV
• Precision diboson measurements at hadron colliders
• Approaching robust EFT limits for CP-violation in the Higgs sector
• Landscaping CP-violating BSM scenarios
• Probing CP-violation at colliders through interference effects in diboson production and decay
• Diboson Production at LHC and Tevatron
• Higgs(general) at ATLAS

Cited by in corpus (13)

• gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors
• Beyond Jarlskog: 699 invariants for CP violation in SMEFT
• Impact of Dimension-8 SMEFT operators on Diboson Productions
• A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
• Polarized-boson pairs at NLO in the SMEFT
• A rotation-equivariant graph neural network for learning hadronic SMEFT effects
• Constraints on the anomalous Higgs boson couplings in $Z\gamma \gamma$ production at muon collider
• Weinberg operator contribution to the CP-odd nuclear force in the quark model
• Search for $CP$ violation in events with top quarks and Z bosons at $\sqrt{s}$ = 13 and 13.6 TeV
• Sensitivity to $\mathcal{C}\mathcal{P}$-violating effective couplings in the top-Higgs sector
• Measurements of $W^{+}{W}^{-}$ production cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurements and interpretations of $W^{\pm }Z$ production cross-sections in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Probing CP Violation through Vector Boson Fusion at High-Energy Muon Colliders