New angles on top quark decay to a charged Higgs

Abstract

To properly discover a charged Higgs Boson ($H^{\pm }$) requires its spin and couplings to be determined. We investigate how to utilize $\ttbar$ spin correlations to analyze the $H^{\pm }$ couplings in the decay $t\to b{H}^{+}\to b{\tau }^{+}{\nu }_{\tau }$. Within the framework of a general Two-Higgs-Doublet Model, we obtain results on the spin analyzing coefficients for this decay and study in detail its spin phenomenology, focusing on the limits of large and small values for $\tan \beta$. Using a Monte Carlo approach to simulate full hadron-level events, we evaluate systematically how the $H^{\pm }\to {\tau }^{\pm }{\nu }_{\tau }$ decay mode can be used for spin analysis. The most promising observables are obtained from azimuthal angle correlations in the transverse rest frames of $t(\bar{t})$. This method is particularly useful for determining the coupling structure of $H^{\pm }$ in the large $\tan \beta$ limit, where differences from the SM are most significant.

28 pages, 13 figures. Uses JHEP format

References in corpus (41)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Dispelling the N^3 myth for the Kt jet-finder
• MadGraph/MadEvent v4: The New Web Generation
• Successive Combination Jet Algorithm For Hadron Collisions
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
• Better Jet Clustering Algorithms
• The Top Quark Mass in Supersymmetric SO(10) Unification
• Effective lagrangian for the tbH^+ interaction in the MSSM and charged Higgs phenomenology
• B -> X_s gamma in supersymmetry: large contributions beyond the leading order
• Top quark pair production and decay at hadron colliders
• Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations
• Angular Correlations in Top Quark Pair Production and Decay at Hadron Colliders
• Top quark spin correlations at hadron colliders: Predictions at next-to-leading order QCD
• Maximizing Spin Correlations in Top Quark Pair Production at the Tevatron
• Tracing CP violation in the production of top quark pairs by multiple TeV proton-proton collisions
• Probing anomalous Wtb couplings in top pair decays
• Search for charged Higgs bosons from top quark decays in \ppbar collisions at $\sqrt{s}=1.96$ TeV
• Spin Correlations in Top-Quark Pair Production at $e^{+}{e}^{-}$ Colliders
• Spin Correlation in Top-Quark Production at Hadron Colliders
• Charged Higgs- and R-Parity-Violating Slepton-Strahlung at Hadron Colliders
• Detecting Heavy Charged Higgs Bosons at the LHC with Four b-Quark Tags
• Search for charged Higgs bosons in e+e- collisions at energies up to sqrt(s) = 209GeV
• Distributions of leptons in decays of polarised heavy quarks
• Search for charged Higgs bosons in e+e- collisions at energies up to sqrt(s) = 189GeV
• TopReX generator (version~3.25). Short manual
• Top Quark Production and Decay at Next-to-leading Order in $e^{+}{e}^{-}$ Annihilation
• Spin-Spin Correlations of Top Quark Pairs at Hadron Colliders
• Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
• Precise determination of the Wtb couplings at LHC
• Sharpening up the Charged Higgs Boson Signature using Tau Polarization at LHC
• Spin Formalism and Applications to New Physics Searches
• The spin density matrix of top quark pairs produced in electron-positron annihilation including QCD radiative corrections
• Top Spin Correlations in Theories with Large Extra-Dimensions at the Large Hadron Collider
• On the Observation of Top Spin Correlation Effect at Tevatron
• Summary of the CMS Discovery Potential for the MSSM SUSY Higgses
• Supersymmetric effects in top quark decay into polarized W-boson
• Pythia Tune A, Herwig, and Jimmy in Run 2 at CDF
• $O({\alpha }_s)$ corrections to polarized top decay into a charged Higgs $t(\uparrow )\to H^{+}+b$
• O(α_s) QCD Corrections to Spin Correlations in $e^{-}{e}^{+}\to t\bar{t}$ process at the NLC

Cited by in corpus (6)

• Status of the Charged Higgs Boson in Two Higgs Doublet Models
• Top polarisation studies in $H^{-}t$ and $Wt$ production
• The epsilon regime with Wilson fermions
• Searching for Charged Higgs Boson in Polarized Top Quark
• Improved sensitivity to charged Higgs searches in Top quark decays $t\to b{H}^{+}\to b({\tau }^{+}{\nu }_{\tau })$ at the LHC using $\tau$ polarisation and multivariate tecnniques
• Measuring the charged Higgs mass and distinguishing between models with top-quark observables