Direct measurement of the Higgs self-coupling in $e^{+}{e}^{-}\to ZH$

Abstract

A new method to measure the trilinear Higgs self-coupling ${\lambda }_3^{}$ in a single Higgs production process is proposed. Time-reversal-odd (T-odd) asymmetries in the process $e_{}^{+}{e}_{}^{-}\to ZH$, $Z\to f\bar{f}$ are computed from the absorptive part of the electroweak one-loop amplitude. Since the T-odd asymmetries measure the tree-level $t$-channel $ZH\to ZH$ scattering, they can be direct probes of ${\lambda }_3^{}$. The proposed method is quite challenging; a relatively large statistics and polarized $e_{}^{+}{e}_{}^{-}$ beams are demanded. However, this is probably the only approach to directly measure ${\lambda }_3^{}$ in $e_{}^{+}{e}_{}^{-}$ collisions, when a beam energy above the $ZHH$ production threshold is not available.

arXiv comment13 pages, 5 figures

References in corpus (17)

• Automatized One-Loop Calculations in 4 and D dimensions
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Higgs pair production at the LHC with NLO and parton-shower effects
• Probing the Higgs self-coupling at hadron colliders using rare decays
• Measuring the Higgs Boson Self Coupling at the LHC and Finite Top Mass Matrix Elements
• An Indirect Model-Dependent Probe of the Higgs Self-Coupling
• Probing the Scalar Sector in $e^{+}{e}^{-}\to f\bar{f}H$
• Trilinear Higgs coupling determination via single-Higgs differential measurements at the LHC
• Higgs pair production in vector-boson fusion at the LHC and beyond
• Higgs Pair Production at Future Hadron Colliders: From Kinematics to Dynamics
• Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders
• TauDecay: a library to simulate polarized tau decays via FeynRules and MadGraph5
• Measuring Trilinear Higgs Coupling in $WHH$ and $ZHH$ Productions at the HL-LHC
• Probing the Higgs self-coupling through double Higgs production in vector boson scattering at the LHC
• Anomalous Higgs-top Coupling Pollution on Triple Higgs Coupling Extraction at Future High-Luminosity Electron-Positron Collider
• Measuring the Higgs Boson Self-coupling at High Energy e^+e^- Colliders
• Parity-Odd Asymmetries in W-Jet Events at the Tevatron

Cited by in corpus (4)

• Collider Physics at the Precision Frontier
• Exploring anomalous couplings in Higgs boson pair production through shape analysis
• Indirect measurement of triple-Higgs coupling at an electron-positron collider with polarized beams
• Use of $Z$ polarization in $e^{+}{e}^{-}\to ZH$ to measure the triple-Higgs coupling