Determining the $CP$ Property of $ht\bar{t}$ Coupling via a Novel Jet Substructure Observable

Abstract

Determining the $CP$ property of the Higgs boson is important for a precision test of the Standard Model as well as for the search for new physics. We propose a novel jet substructure observable based on the azimuthal anisotropy in a linearly polarized gluon jet that is produced in association with a Higgs boson at hadron colliders, and demonstrate that it provides a new $CP$-odd observable for determining the $CP$ property of the Higgs-top interaction. We introduce a factorization formalism to define a polarized gluon jet function with the insertion of an infrared-safe azimuthal observable to capture the linear polarization.

arXiv comment5 pages, 3 figures; match to journal version

References in corpus (27)

• An Introduction to PYTHIA 8.2
• ATLAS $b$-jet identification performance and efficiency measurement with $t\bar{t}$ events in $pp$ collisions at $\sqrt{s}=13$ TeV
• Measuring transversity densities in singly polarized hadron-hadron and lepton-hadron collisions
• Quark and Gluon Tagging at the LHC
• Infrared safe definition of jet flavour
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Boosting the Direct CP Measurement of the Higgs-Top Coupling
• Measurement of the $c$-jet mistagging efficiency in $t\bar{t}$ events using $pp$ collision data at $\sqrt{s}=13$ TeV collected with the ATLAS detector
• On the Topic of Jets: Disentangling Quarks and Gluons at Colliders
• Lab-frame observables for probing the top-Higgs interaction
• Identification of hadronic tau lepton decays using a deep neural network
• Quark-Gluon Tagging: Machine Learning vs Detector
• Unveiling CP property of top-Higgs coupling with graph neural networks at the LHC
• New features in the JHU generator framework: constraining Higgs boson properties from on-shell and off-shell production
• Physics at the FCC-hh, a 100 TeV pp collider
• Polarized jet fragmentation functions
• Angles on CP-violation in Higgs boson interactions
• Genuine CP-odd Observables at the LHC
• Machine learning the Higgs boson-top quark CP phase
• Optimized probes of $CP$-odd effects in the $t\bar{t}h$ process at hadron colliders
• Identification of boosted Higgs bosons decaying into $b$-quark pairs with the ATLAS detector at 13 TeV
• Probing the CP structure of the top quark Yukawa coupling: Loop sensitivity vs. on-shell sensitivity
• Central-edge asymmetry as a probe of Higgs-top coupling in $t\bar{t}h$ production at LHC
• Top polarisation as a probe of CP-mixing top-Higgs coupling in $tjh$ signals
• Gluon Polarization in $e^{+}{e}^{-}\to t\bar{t}G$
• Gluon Polarization in e^+e^- -> t \bar t G: Polar Angle Dependence and Beam Polarization Effects
• A General Analysis for Observing Quantum Interference at Colliders

Cited by in corpus (1)

• Gluon Polarimetry with Energy-Energy Correlators