New Discovery Modes for a Light Charged Higgs Boson at the LHC

Abstract

At the Large Hadron Collider (LHC), both the ATLAS and CMS Collaborations have been searching for light charged Higgs bosons via top (anti)quark production and decays channels, like $pp\to t\bar{t}$ with one top (anti)quark decaying into a charged Higgs boson and a $b$ (anti)quark, when the decay is kinematically open (i.e., when $m_{H^{\pm }}\lesssim m_t$). In this paper, we propose new searches at the LHC involving light charged Higgs bosons via their pair production channels like $pp\to H^{\pm }h/A$ and $pp\to H^{+}{H}^{-}$ in the 2-Higgs Doublet Model (2HDM) Type-I and -X scenarios. By focusing on the case where the heavy $H$ state plays the role of the Standard Model (SM)-like Higgs boson with a mass near 125 GeV, we study the aforementioned Higgs boson pair production channels and investigate their bosonic decays, such as $H^{\pm }\to W^{\pm }h$ and/or $H^{\pm }\to W^{\pm }A$. We demonstrate that for a light charged Higgs boson state, with $m_{H^{\pm }}\lesssim m_t$, at the LHC, such di-Higgs production and decay channels can give rise to signatures with event rates much larger than those emerging from $pp\to t\bar{t}\to t\bar{b}{H}^{-}$ + c.c.. We specifically study $h/A\to b\bar{b}$ and ${\tau }^{+}{\tau }^{-}$ decays. We, therefore, claim that the discussed combination of new production and decay modes can result in an alternative discovery channel for charged Higgs bosons lighter than the top (anti)quark at the LHC within the above two 2HDM Types. Finally, in order to motivate experimentalists in ATLAS and CMS to search for such signatures, we propose 16 Benchmark Points (BPs) which are compatible with both theoretical and experimental constraints.

arXiv comment17 pages, 5 figures; a few typos were corrected and two references were added

References in corpus (50)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Theory and phenomenology of two-Higgs-doublet models
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Automatic Generation of Tree Level Helicity Amplitudes
• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• 2HDMC - Two-Higgs-Doublet Model Calculator
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• Note on tree-level unitarity in the General Two Higgs Doublet Model
• Lee-Quigg-Thacker Bounds for Higgs Boson Masses in a Two-Doublet Model
• The oblique parameters in multi-Higgs-doublet models
• Extra Families, Higgs Spectrum and Oblique Corrections
• HiggsBounds-5: Testing Higgs Sectors in the LHC 13 TeV Era
• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ branching fraction and effective lifetime and search for $B^0\to {\mu }^{+}{\mu }^{-}$ decays
• HiggsSignals-2: Probing new physics with precision Higgs measurements in the LHC 13 TeV era
• Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U
• Charged Higgs Boson Production in Bottom-Gluon Fusion
• Search for a charged Higgs boson in pp collisions at sqrt(s) = 8 TeV
• Associated Production of a Top Quark and a Charged Higgs Boson
• Search for charged Higgs bosons decaying via $H^{\pm }\to {\tau }^{\pm }{\nu }_{\tau }$ in the $\tau$+jets and $\tau$+lepton final states with 36 fb${}^{-1}$ of $pp$ collision data recorded at $\sqrt{s}=13$ TeV with the ATLAS experiment
• Prospects for charged Higgs searches at the LHC
• Heavy Charged Higgs Signals at the LHC
• Search for charged Higgs bosons in the H${}^{\pm }$ $\to$ ${\tau }^{\pm }{\nu }_{\tau }$ decay channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Combination of ttbar cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons
• W^+- H^-+ Associated Production at the Large Hadron Collider
• Complete next-to-leading order QCD corrections to charged Higgs boson associated production with top quark at the CERN Large Hadron Collider
• Detecting Heavy Charged Higgs Bosons at the LHC with Four b-Quark Tags
• Production of charged Higgs bosons of the Minimal Supersymmetric Standard Model in b-quark initiated processes at the Large Hadron Collider
• Three-body decays of Higgs bosons at LEP2 and application to a hidden fermiophobic Higgs
• The phenomenology of $W^{\pm }{H}^{\mp }$ production at the Large Hadron Collider
• 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
• Light Charged Higgs bosons at the LHC in 2HDMs
• Bosonic Decays of Charged Higgs Bosons in a 2HDM Type-I
• Unitarity constraints on scalar parameters of the Standard and Two Higgs Doublets Model
• Quark-Loop Amplitudes for W^+- H^-+ Associated Hadroproduction
• Pair production of charged Higgs scalars from electroweak gauge boson fusion
• Improved description of charged Higgs boson production at hadron colliders
• Charged-Higgs Collider Signals with or without Flavor
• Improving the discovery potential of charged Higgs bosons at Tevatron Run 2
• Charged Higgs boson in the $W^{\pm }$ Higgs channel at the Large Hadron Collider
• Pair production of charged Higgs bosons in association with bottom quark pairs at the Large Hadron Collider
• A Guidebook to Hunting Charged Higgs Bosons at the LHC
• The ppbar -> tbH^+/- Process at the Tevatron in HERWIG and PYTHIA Simulations
• Enhanced Charged Higgs Production through W-Higgs Fusion in W-b Scattering
• Charged Higgs boson production via $cb-$fusion at the Large Hadron Collider
• Charged Higgs Discovery Prospects
• Electroweak production of multiple (pseudo)scalars in the 2HDM
• Off-diagonal terms in Yukawa textures of the Type-III 2-Higgs doublet model and light charged Higgs boson phenomenology
• $H^{\pm }$ in the $W^{\pm }h$ channel at the LHC Run 2

Cited by in corpus (4)

• Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model
• Same sign trilepton as signature of charged Higgs in two Higgs doublet model
• Analysis of $W^{\pm }+4\gamma$ in the 2HDM Type-I at the LHC
• New Light $H^{\pm }$ Discovery Channels at the LHC