Machine learning the trilinear and light-quark Yukawa couplings from Higgs pair kinematic shapes

Abstract

Revealing the Higgs pair production process is the next big challenge in high energy physics. In this work, we explore the use of interpretable machine learning and cooperative game theory for extraction of the trilinear Higgs self-coupling in Higgs pair production. In particular, we show how a topological decomposition of the gluon-gluon fusion Higgs pair production process can be used to simplify the machine learning analysis flow. Furthermore, we extend the analysis to include $q\bar{q}\to hh$ production, which is strongly suppressed in the Standard Model, to extract the trilinear Higgs coupling and to bound large deviations of the light-quark Yukawa couplings from the Standard Model values. The constraints on the rescaling of the trilinear Higgs self-coupling, ${\kappa }_{\lambda }$, and the rescaling of light-quark Yukawa couplings, ${\kappa }_u$ and ${\kappa }_d$, at HL-LHC (FCC-hh) from single parameter fits are: \begin{eqnarray} κ_λ&=&[0.53,1.7] \;\;([0.97, 1.03])\nonumber \newline κ_u&=&[-470,430] \;\;([-58,55])\nonumber \newline κ_d&=&[-360,360] \;\;([-26,28])\nonumber \end{eqnarray} We show that the simultaneous modification of the Yukawa couplings can dilute the constraints on the trilinear coupling significantly. We perform similar analyses for FCC-hh. We discuss some motivated flavourful new physics scenarios where such an analysis prevails.

36 pages, 10 figures and 6 tables, accepted for publication in JHEP

References in corpus (23)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• LHAPDF6: parton density access in the LHC precision era
• Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO
• An Exclusive Window onto Higgs Yukawa Couplings
• Probing the Higgs self coupling via single Higgs production at the LHC
• Indirect probes of the trilinear Higgs coupling: $gg\to h$ and $h\to \gamma \gamma$
• Probing the trilinear Higgs boson coupling in di-Higgs production at NLO QCD including parton shower effects
• Higgs physics confronts the $M_W$ anomaly
• Boosted decision trees in the era of new physics: a smuon analysis case study
• Violation of custodial symmetry from W-boson mass measurements
• Phenomenology of Enhanced Light Quark Yukawa Couplings and the $W^{\pm }h$ Charge Asymmetry
• Interpretable machine learning in Physics
• Flavour constraints on multi-Higgs-doublet models: Yukawa alignment
• Light quark Yukawas in triboson final states
• Higgs Boson Decay to Light Jets at the LHC
• Exclusive Weak Radiative Higgs Decays in the Standard Model and Beyond
• Portraying Double Higgs at the Large Hadron Collider II
• Anomalous couplings in Higgs-boson pair production at approximate NNLO QCD
• Multi-Higgs Production Probes Higgs Flavor
• Off-shell probes of the Higgs Yukawa couplings: light quarks and charm
• Diphoton production in association with two bottom jets
• New Physics in Double Higgs Production at Future $e^{+}{e}^{-}$ Colliders

Cited by in corpus (9)

• Constraints on the trilinear and quartic Higgs couplings from triple Higgs production at the LHC and beyond
• Two-loop running effects in Higgs physics in Standard Model Effective Field Theory
• How large can the Light Quark Yukawa couplings be?
• Beyond Cuts in Small Signal Scenarios -- Enhanced Sneutrino Detectability Using Machine Learning
• Probing Higgs-muon interactions at a multi-TeV muon collider
• Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
• Unsupervised and lightly supervised learning in particle physics
• Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders
• Higgs probes of top quark contact interactions and their interplay with the Higgs self-coupling