Multi-Higgs Production Probes Higgs Flavor

Abstract

We demonstrate that multiple-Higgs production at the LHC is the most sensitive probe of first and second-generation quark flavor in the Higgs sector. In models where new scalars couple to light quarks, gigantic di-Higgs and even sizable tri-Higgs production rates can be obtained, which can be used to either discover or severely constrain such theories. As an example, we show that the most stringent bounds on enhanced interactions of the $125\text{GeV}$ Higgs to the down quark in extended Higgs sectors are obtained by looking for the extra Higgs bosons that provide for such enhancements using the di-Higgs and $Zh$ topologies. In this context, we set new limits on the 125 GeV Higgs coupling to the down quark as strong as ${\lambda }_{hd\bar{d}}\lesssim 30{\lambda }_{hd\bar{d}}^{\text{SM}}$ -- a dramatic improvement over previously available bounds. Regarding second-generation quark flavor, we obtain new limits in the coupling to strange as strong as ${\lambda }_{hs\bar{s}}\lesssim 10{\lambda }_{hs\bar{s}}^{\text{SM}}$. In addition, we show that the currently unexplored triple-Higgs production topology could be a potential discovery channel of a wide variety of extended Higgs sectors at the LHC, including not only models where extra Higgses couple to light quarks, but also popular theories where they have preferential couplings to the the top.

arXiv comment32 pages, 11 figures

References in corpus (54)

• Theory and phenomenology of two-Higgs-doublet models
• Minimal Flavour Violation: an effective field theory approach
• Gauge Singlet Scalars as Cold Dark Matter
• The CP-conserving two-Higgs-doublet model: the approach to the decoupling limit
• Model-independent constraints on Delta F=2 operators and the scale of New Physics
• Electroweak Baryogenesis
• 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
• Testing Electroweak Baryogenesis with Future Colliders
• Minimal Extension of the Standard Model Scalar Sector
• Jarlskog-like invariants for theories with scalars and fermions
• Cosmic phase transitions: their applications and experimental signatures
• Higgs boson pair production at NNLO with top quark mass effects
• Higgs boson decays to quarkonia and the Hccbar coupling
• Search for new resonances in mass distributions of jet pairs using 139 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Exploring Resonant di-Higgs production in the Higgs Singlet Model
• Higgs boson pair production in the D=6 extension of the SM
• New Physics in LHC Higgs boson pair production
• Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Combination of searches for Higgs boson pair production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Higgs boson potential at colliders: status and perspectives
• Searching for Signs of the Second Higgs Doublet
• An Exclusive Window onto Higgs Yukawa Couplings
• Combination of searches for Higgs boson pairs in $pp$ collisions at $\sqrt{s}=$13 TeV with the ATLAS detector
• Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Flavor-specific scalar mediators
• Constraining Light-Quark Yukawa Couplings from Higgs Distributions
• Narrow Trans-TeV Higgs Bosons and $H\to hh$ Decays: Two LHC Search Paths for a Hidden Sector Higgs Boson
• Search for heavy resonances decaying into a pair of $Z$ bosons in the ${\ell }^{+}{\ell }^{-}{\ell }^{\prime +}{\ell }^{\prime -}$ and ${\ell }^{+}{\ell }^{-}\nu \bar{\nu }$ final states using 139 fb${}^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Prospects for measuring the Higgs coupling to light quarks
• Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment
• Benchmarks for Double Higgs Production in the Singlet Extended Standard Model at the LHC
• Light quark Yukawa couplings from Higgs kinematics
• Higgs bosons with large couplings to light quarks
• Searches for exclusive Higgs and $Z$ boson decays into $J/\psi \gamma$, $\psi (2S)\gamma$, and ${\rm Y}(nS)\gamma$ at $\sqrt{s}=13$ TeV with the ATLAS detector
• Maxi-sizing the trilinear Higgs self-coupling: how large could it be?
• Probing the Charm Yukawa Coupling in Higgs + Charm Production
• Search for low-mass resonances decaying into two jets and produced in association with a photon using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Aligned and Spontaneous Flavor Violation
• Search for exclusive Higgs and $Z$ boson decays to $\varphi \gamma$ and $\rho \gamma$ with the ATLAS detector
• Phenomenology of Enhanced Light Quark Yukawa Couplings and the $W^{\pm }h$ Charge Asymmetry
• Search for rare decays of Z and Higgs bosons to J$/\psi$ and a photon in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Di-higgs enhancement by neutral scalar as probe of new colored sector
• Triple Higgs production at hadron colliders at NNLO in QCD
• A universally enhanced light-quarks Yukawa couplings paradigm
• Light quark Yukawas in triboson final states
• Constraining the Higgs Boson Coupling to Light Quarks in the $H\to ZZ$ Final States
• Probing the strange Higgs coupling at lepton colliders using light-jet flavor tagging
• Probing Higgs couplings to light quarks via Higgs pair production
• Higgs Pair Production as a Signal of Enhanced Yukawa Couplings
• The Quantum Critical Higgs
• Bounding the Charm Yukawa
• Search for decays of the 125 GeV Higgs boson into a Z boson and a $\rho$ or $\varphi$ meson
• Effective Theory of Higgs Sector Vacuum States
• Strange Jet Tagging

Cited by in corpus (9)

• Exploiting dijet resonance searches for flavor physics
• Testing Exotic Scalars with HiggsBounds
• Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC
• Machine learning the trilinear and light-quark Yukawa couplings from Higgs pair kinematic shapes
• How large can the Light Quark Yukawa couplings be?
• Multi Higgs Boson Signals of a Modified Muon Yukawa Coupling at a Muon Collider
• Higgs to charm quarks in vector boson fusion plus a photon
• The Charged Higgs from the Bottom-Up: Probing Flavor at the LHC
• A three Higgs doublet model with symmetry-suppressed flavour changing neutral currents