Sensing Higgs cascade decays through memory

Abstract

Beyond the Standard Model scenarios with extensions of the Higgs sector typically predict new resonances that can undergo a series of cascade decays to detectable Standard Model particles. On one hand, sensitivity to such signatures will contribute to the full reconstruction of the extended Higgs potential if a new physics discovery will be made. On the other hand, such cascade decays could be dominant decay channels, thus being potentially the best motivated signatures to achieve a new physics discovery in the first place. In this work, we show how the long short-term memory that is encoded in the cascade decays' phenomenology can be exploited in discriminating the signal from the background, where no such information is present. In parallel, we demonstrate for theoretically motivated scenarios that such an approach provides improved sensitivity compared to more standard analyses, where only information about the signal's final state kinematics is included.

arXiv comment9 pages, 5 figures, 1 table; v2: version published in PRD

References in corpus (46)

• TensorFlow: Large-Scale Machine Learning on Heterogeneous Distributed Systems
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Theory and phenomenology of two-Higgs-doublet models
• MadGraph 5 : Going Beyond
• Dispelling the N^3 myth for the Kt jet-finder
• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• FeynRules - Feynman rules made easy
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• m_T2 : the truth behind the glamour
• Designing and recasting LHC analyses with MadAnalysis 5
• The Machine Learning Landscape of Top Taggers
• Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations
• NLO QCD corrections to pp -> t anti-t b anti-b + X at the LHC
• Towards a public analysis database for LHC new physics searches using MadAnalysis 5
• Jet Flavor Classification in High-Energy Physics with Deep Neural Networks
• ALOHA: Automatic Libraries Of Helicity Amplitudes for Feynman diagram computations
• Confronting new physics theories to LHC data with MadAnalysis 5
• The N2HDM under Theoretical and Experimental Scrutiny
• Higgs Decay to Top Quarks at Hadron Colliders
• Finding top quarks with shower deconstruction
• ScannerS: Constraining the phase diagram of a complex scalar singlet at the LHC
• Finding physics signals with shower deconstruction
• QCD-Aware Recursive Neural Networks for Jet Physics
• Singlet Extensions of the Standard Model at LHC Run 2: Benchmarks and Comparison with the NMSSM
• Search for charged Higgs bosons decaying into top and bottom quarks at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Two-real-scalar-singlet extension of the SM: LHC phenomenology and benchmark scenarios
• Search for heavy Higgs bosons $A/H$ decaying to a top quark pair in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Wrong sign and symmetric limits and non-decoupling in 2HDMs
• Using LSTM recurrent neural networks for monitoring the LHC superconducting magnets
• Search for charged Higgs bosons decaying into a top and a bottom quark in the all-jet final state of pp collisions at $\sqrt{s}=$ 13 TeV
• Jet Charge and Machine Learning
• Finding physics signals with event deconstruction
• Challenges and opportunities for heavy scalar searches in the $t\bar{t}$ channel at the LHC
• Dip or nothingness of a Higgs resonance from the interference with a complex phase
• Search for new neutral Higgs bosons through the H $\to$ ZA $\to$ ${\ell }^{+}{\ell }^{-}\mathrm{b}\bar{\mathrm{b}}$ process in pp collisions at $\sqrt{s}=$ 13 TeV
• Production of heavy Higgs bosons and decay into top quarks at the LHC
• Heavy Higgs boson decays in the alignment limit of the 2HDM
• Showcasing HH production: Benchmarks for the (HL-)LHC
• Di-Higgs Peaks and Top Valleys: Interference Effects in Higgs Sector Extensions
• Interference Effects in $t\bar{t}$ Production at the LHC as a Window on New Physics

Cited by in corpus (8)

• Higgs boson tagging with the Lund jet plane
• Combine and Conquer: Event Reconstruction with Bayesian Ensemble Neural Networks
• Classification of Fermi-LAT sources with deep learning using energy and time spectra
• HHH Whitepaper
• Triple Higgs Boson Production at the Large Hadron Collider with Two Real Singlet Scalars
• Role of polarizations and spin-spin correlations of $W^{\prime }s$ in $e^{-}{e}^{+}\to W^{-}{W}^{+}$ at $\sqrt{s}=250$ GeV to probe anomalous $W^{-}{W}^{+}Z/\gamma$ couplings
• Interplay of Traditional Methods and Machine Learning Algorithms for Tagging Boosted Objects
• On interference effects in top-philic decay chains