Optimal determination of New Physics couplings: A comparative study

Abstract

We study the determination of new physics (NP) parameters using the optimal observable technique (OOT) in situations where the standard model (SM) dominates over the NP effects, and when the NP dominates over the SM contribution, using the 2-Higgs doublet model as an illustrative example; for the case of SM domination we extend our results using an effective theory parameterization of NP effects. For the case of SM dominance we concentrate on $t\bar{t}$ production in an $e^{+}{e}^{-}$ collider, while for the case of NP dominance we consider both $t\bar{t}$ production and pair production of charged scalars, also in an $e^{+}{e}^{-}$ collider. We discuss the effects of the efficiency of background reduction, luminosity and beam polarization, and provide a comparison of the optimal uncertainties with those obtained using a standard ${\chi }^2$ analysis of (Monte Carlo generated) collider data.

arXiv comment33 pages, 15 figures, 7 tables; Tilte changed, abstract modified, optimal vs standard ${\chi }^2$ discussed; Accepted for publication in JHEP

References in corpus (68)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Theory and phenomenology of two-Higgs-doublet models
• Dimension-Six Terms in the Standard Model Lagrangian
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• A Precision Measurement of the Mass of the Top Quark
• Phenomenology of models with more than two Higgs doublets
• Dimension-8 Operators in the Standard Model Effective Field Theory
• Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators
• Complete Set of Dimension-8 Operators in the Standard Model Effective Field Theory
• A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
• O new physics, where art thou? A global search in the top sector
• Natural Dark Matter from an Unnatural Higgs Boson and New Colored Particles at the TeV Scale
• A global approach to top-quark flavor-changing interactions
• Effective four-fermion operators in top physics: a roadmap
• Determining the top-antitop and $ZZ$ Couplings of a Neutral Higgs Boson of Arbitrary CP Nature at the NLC
• Dimension Seven Operators in Standard Model with Right handed Neutrinos
• Automation of the matrix element reweighting method
• Scalar sector of Two-Higgs-Doublet models: A mini-review
• A global fit of top quark effective theory to data
• Non-minimal neutral Higgs bosons at LEP2
• Complete Set of Dimension-9 Operators in the Standard Model Effective Field Theory
• An explicit construction of the dimension-9 operator basis in the standard model effective field theory
• Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders
• Fermiophobic and other non-minimal neutral Higgs bosons at the LHC
• Single-top associated production with a $Z$ or $H$ boson at the LHC: the SMEFT interpretation
• The Compact Linear Collider (CLIC) - Project Implementation Plan
• Probing top-Z dipole moments at the LHC and ILC
• Measuring the Higgs-Vector boson Couplings at Linear $e^{+}{e}^{-}$ Collider
• Top and Beauty synergies in SMEFT-fits at present and future colliders
• Global and optimal probes for the top-quark effective field theory at future lepton colliders
• Optimal-observable analysis of possible new physics in $B\to D^{(\ast )}\tau {\nu }_{\tau }$
• The Matrix Element Method and its Application to Measurements of the Top Quark Mass
• Top-quark electroweak couplings at the FCC-ee
• Top-quark electroweak interactions at high energy
• Benchmarking the Inert Doublet Model for e+ e- colliders
• Reconstruction of Inert Doublet Scalars at the International Linear Collider
• Low Energy Effective Field Theory Operator Basis at $d\le 9$
• Optimal-Observable Analysis of the Angular and Energy Distributions for Top-Quark Decay Products at Polarized Linear Colliders
• Probing top-quark couplings indirectly at Higgs factories
• Determining the relative size of the CP-even and CP-odd Higgs Boson Couplings to a Fermion at the LHC
• Probe of the Wtb coupling in $t\bar{t}$ pair production at Linear Colliders
• Constraining four-fermion operators using rare top decays
• Four-Fermi Effective Operators in Top-Quark Production and Decay
• Two-Higgs-doublet models in light of current experiments: a brief review
• Studying possible CP-violating Higgs couplings through top-quark pair productions at muon colliders
• Low-Energy Effective Field Theory below the Electroweak Scale: Dimension-8 Operators
• Probing Top-Quark Couplings at Polarized NLC
• Probing anomalous $ZZ\gamma$ and $Z\gamma \gamma$ Couplings at the $e^{+}{e}^{-}$ Colliders using Optimal Observable Technique
• CP-Violating Lepton-Energy Correlation in e\bar{e}\to t\bar{t}
• Exploring Inert Scalars at CLIC
• A Covariant Method for Calculating Helicity Amplitudes
• Top quark electroweak couplings at future lepton colliders
• Search for new physics via single top production at TeV energy $e\gamma$ colliders
• Testing Top-Quark Yukawa Interactions in e+ e- -> t \bar{t} Z
• Learning to pinpoint effective operators at the LHC: a study of the $t\bar{t}b\bar{b}$ signature
• Probing heavy charged fermions at $e^{+}{e}^{-}$ collider using the Optimal Observable Technique
• Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
• Optimal Beam Polarizations for New-Physics Search through gamma gamma -> t tbar -> lX/bX
• Off-shell single-top-quark production in the Standard Model Effective Field Theory
• Effects of Non-Standard Interactions for the Energy Spectrum of Secondary Leptons in e^+e^- --> t t-bar
• Production of Inert Scalars at the high energy $e^{+}{e}^{-}$ colliders
• The Inert Doublet Model and its extensions
• New physics with the lepton flavor violating decay $\tau \to 3\mu$
• Optimal observable analysis for the decay $b\to s$ plus missing energy
• Final charged-lepton angular distribution and possible anomalous top-quark couplings in p p -> t tbar X -> l^+ X'
• Constraining the top quark effective field theory using the top quark pair production in association with a jet at future lepton colliders

Cited by in corpus (6)

• Probing flavor constrained SMEFT operators through $tc$ production at the Muon collider
• Multi Higgs production via photon fusion at future multi-TeV muon colliders
• Exploring Optimal Sensitivity of Lepton Flavor Violating Effective Couplings at the $e^{+}{e}^{-}$ Colliders
• Optimal sensitivity of anomalous charged triple gauge couplings through $W$ boson helicity at the $e^{+}{e}^{-}$ colliders
• Single-spin measurements and heavy new physics in the $e^{+}{e}^{-}\to t\bar{t}$ process at an FCC-ee
• Optimal New Physics estimation in presence of Standard Model backgrounds