Heavy Higgs Bosons at the LHC Upgrade

Abstract

We evaluate the discovery potential for the heavy Higgs bosons at the LHC energy upgrade with $\sqrt{s}=27$ TeV. We take degenerate mass spectrum and assume near the alignment limit in the Type-II Two Higgs Doublet Model for illustration. We explore the observability of the heavy neutral Higgs bosons by examining the leading decay channel $H^0/A^0\to {\tau }^{+}{\tau }^{-}$ and the clean signals from $H^0\to W^{+}{W}^{-},ZZ$ via gluon-gluon fusion production. The associated production of a top quark and a charged Higgs boson via $gb\to t{H}^{\pm }$ is adopted to predict the discovery potential of heavy charged Higgses. We also emphasize the potential importance of the electroweak production of Higgs boson pairs, i.e. $pp\to W^{\ast }\to H^{\pm }{A}^0$ and $pp\to Z^{\ast }/{\gamma }^{\ast }\to H^{+}{H}^{-}$. They are only governed by pure electroweak gauge couplings and can provide complementary information to the conventional signals in the determination of the nature of the Higgs sector.

arXiv comment30 pages, 14 figures, 8 tables

References in corpus (36)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• 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
• LHAPDF6: parton density access in the LHC precision era
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• The CP-conserving two-Higgs-doublet model: the approach to the decoupling limit
• 2HDMC - Two-Higgs-Doublet Model Calculator
• SusHi: A program for the calculation of Higgs production in gluon fusion and bottom-quark annihilation in the Standard Model and the MSSM
• Tree-level unitarity constraints in the most general 2HDM
• Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Status of the Charged Higgs Boson in Two Higgs Doublet Models
• Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. Part 1: $m_h=125$ GeV
• Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. Part 2: $m_H=125$ GeV
• Associated Production of a Top Quark and a Charged Higgs Boson
• Prospects for charged Higgs searches at the LHC
• Heavy Charged Higgs Signals at the LHC
• MSSM Higgs Bosons at The LHC
• Search for charged Higgs bosons decaying into top and bottom quarks at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for heavy $ZZ$ resonances in the ${\ell }^{+}{\ell }^{-}{\ell }^{+}{\ell }^{-}$ and ${\ell }^{+}{\ell }^{-}\nu \bar{\nu }$ final states using proton proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for heavy resonances decaying into a $W$ or $Z$ boson and a Higgs boson in final states with leptons and $b$-jets in 36 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Search for neutral resonances decaying into a Z boson and a pair of b jets or tau leptons
• Search for a heavy Higgs boson decaying into a $Z$ boson and another heavy Higgs boson in the $\ell \ell bb$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Detecting Heavy Charged Higgs Bosons at the LHC with Four b-Quark Tags
• Associated Production of CP-odd and Charged Higgs Bosons at Hadron Colliders
• Improved cross-section predictions for heavy charged Higgs boson production at the LHC
• Heavy Higgs Bosons at 14 TeV and 100 TeV
• Prospects for heavy supersymmetric charged Higgs boson searches at hadron colliders
• Detecting heavy charged Higgs bosons at the LHC with triple b-tagging
• Testing Supersymmetry in the Associated Production of CP-odd and Charged Higgs Bosons
• Resummation Effects in Vector-Boson and Higgs Associated Production
• SUSY and Higgs Signatures Implied by Cancellations in $b\to s\gamma$
• Pair Production of MSSM Higgs Bosons in the Non-decoupling Region at the LHC
• Naturalness, the Hyperbolic Branch and Prospects for the Observation of Charged Higgs at High Luminosity LHC and 27 TeV LHC
• Charged-Higgs production in the Two-Higgs-Doublet Model --- the τνchannel
• Probing the two Higgs doublet wedge region with charged Higgs boson decays to boosted jets