Is there a (Pseudo)Scalar at 95 GeV?

Abstract

We discuss the possibility of interpreting the recent experimental hints, in favour of a 95 GeV resonance, with extensions of the Standard Model featuring an extra Higgs doublet and SM scalar (2HDM+s) or pseudoscalar singlet (2HDM+a). The possibility of reproducing the experimental anomalies will be compared with the theoretical constraints on the extended Higgs sector as well as complementary bounds coming from flavour physics as well as other colliders searchers. For both the 2HDM+s and 2HDM+a we will consider a generic natural flavour conserving (NFC) as well as the customary Type-I, -II, -X and -Y configurations of the Yukawa coupling to the BSM Higgs bosons.

45 pages, 8 figures, v2: updated to match published version

References in corpus (114)

• 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
• Evidence for oscillation of atmospheric neutrinos
• Parton distributions for the LHC
• Theory and phenomenology of two-Higgs-doublet models
• Search for the Standard Model Higgs Boson at LEP
• Minimal Flavour Violation: an effective field theory approach
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• A History of Dark Matter
• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• Electroweak baryogenesis
• FLAG Review 2019
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
• The Next-to-Minimal Supersymmetric extension of the Standard Model reviewed
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• A portrait of the Higgs boson by the CMS experiment ten years after the discovery
• A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• Yukawa Alignment in the Two-Higgs-Doublet Model
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Measurements of the Higgs boson production and decay rates and coupling strengths using $pp$ collision data at $\sqrt{s}=7$ and $8$ TeV in the ATLAS experiment
• $B$- and $D$-meson leptonic decay constants from four-flavor lattice QCD
• QCD Anatomy of B -> X_s gamma Decays
• Model-Independent Bounds on a Light Higgs
• HiggsBounds-5: Testing Higgs Sectors in the LHC 13 TeV Era
• Standard Model Higgs-Boson Branching Ratios with Uncertainties
• Quark mass relations to four-loop order
• Updated Status of the Global Electroweak Fit and Constraints on New Physics
• Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
• A Renormalizable Model for the Galactic Center Gamma Ray Excess from Dark Matter Annihilation
• HiggsSignals-2: Probing new physics with precision Higgs measurements in the LHC 13 TeV era
• Higgs-mediated FCNCs: Natural Flavour Conservation vs. Minimal Flavour Violation
• On epsilon_K beyond lowest order in the Operator Product Expansion
• Next-to-Next-to-Leading-Order Charm-Quark Contribution to the CP Violation Parameter epsilon_K and Delta M_K
• Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U
• HiggsTools: BSM scalar phenomenology with new versions of HiggsBounds and HiggsSignals
• Search for new phenomena in events with an energetic jet and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at $\sqrt{s}=$ 13 TeV
• Neutral B-meson mixing from full lattice QCD at the physical point
• Epsilon_K at Next-to-Next-to-Leading Order: The Charm-Top-Quark Contribution
• LHC Benchmark Scenarios for the Real Higgs Singlet Extension of the Standard Model
• HEPData: a repository for high energy physics data
• Untagged B -> X_(s+d) gamma CP asymmetry as a probe for new physics
• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ decay properties and search for the $B^0\to {\mu }^{+}{\mu }^{-}$ and $B_s^0\to {\mu }^{+}{\mu }^{-}\gamma$ decays
• Search for heavy resonances decaying into $WW$ in the $e\nu \mu \nu$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for charged Higgs bosons decaying into a top quark and a bottom quark at $\sqrt{s}$=13 TeV with the ATLAS detector
• The diphoton signal of the light Higgs boson in Natural NMSSM
• Electroweak Corrections to $B_{s,d}\to {\ell }^{+}{\ell }^{-}$
• Search for a standard model-like Higgs boson in the mass range between 70 and 110 GeV in the diphoton final state in proton-proton collisions at $\sqrt{s}=$ 8 and 13 TeV
• Singlet Extensions of the Standard Model at LHC Run 2: Benchmarks and Comparison with the NMSSM
• Gauge invariant Barr-Zee type contributions to fermionic EDMs in the two-Higgs doublet models
• Flavor constraints on the Two Higgs Doublet Models of $Z_2$ symmetric and aligned types
• Can the new resonance at LHC be a CP-Odd Higgs boson?
• WIMP dark matter as radiative neutrino mass messenger
• Analysis of neutral $B$-meson decays into two muons
• Three-loop QCD corrections to B_s -> mu^+ mu^-
• Higgs Bosons at 98 and 125 GeV at LEP and the LHC
• Huge right-handed current effects in B->K*(K pi)l+l- in supersymmetry
• How to save the WIMP: global analysis of a dark matter model with two s-channel mediators
• Indirect bounds on heavy scalar masses of the two-Higgs-doublet model in light of recent Higgs boson searches
• Pseudoscalar Mediators: A WIMP model at the Neutrino Floor
• Loop corrections to dark matter direct detection in a pseudoscalar mediator dark matter model
• Measurement of the B${}_{\mathrm{S}}^0$ $\to$ ${\mu }^{+}{\mu }^{-}$ decay properties and search for the B${}^0$ $\to$ ${\mu }^{+}{\mu }^{-}$ decay in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h to tau tau
• Combination of searches for heavy resonances decaying into bosonic and leptonic final states using 36 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searches for additional Higgs bosons and for vector leptoquarks in $\tau \tau$ final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• The 96 GeV Diphoton Excess in the Seesaw Extensions of the Natural NMSSM
• Standard-model prediction of ${\epsilon }_K$ with manifest CKM unitarity
• Let there be light from a second light Higgs doublet
• Search for dark matter produced in association with a leptonically decaying Z boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Self-consistent Dark Matter Simplified Models with an s-channel scalar mediator
• Search for a heavy pseudoscalar boson decaying to a Z and a Higgs boson at $\sqrt{s}=$ 13 TeV
• Light Signals from a Lighter Higgs
• Gravitational waves at aLIGO and vacuum stability with a scalar singlet extension of the Standard Model
• The CMS di-photon excess at 95 GeV in view of the LHC Run 2 results
• The 95.4 GeV di-photon excess at ATLAS and CMS
• Search for dark matter in events with a hadronically decaying vector boson and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for new neutral Higgs bosons through the H $\to$ ZA $\to$ ${\ell }^{+}{\ell }^{-}\mathrm{b}\bar{\mathrm{b}}$ process in pp collisions at $\sqrt{s}=$ 13 TeV
• Loop-induced direct detection signatures from CP-violating scalar mediators
• Beyond the Dark matter effective field theory and a simplified model approach at colliders
• Determining the CP nature of spin-0 mediators in associated production of dark matter and $t\bar{t}$ pairs
• Loop Effects in Direct Detection
• Search for dark matter in association with an energetic photon in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• $SU(2{)}_L$ triplet scalar as the origin of the 95 GeV excess?
• Search for dark matter produced in association with a Standard Model Higgs boson decaying into $b$-quarks using the full Run 2 dataset from the ATLAS detector
• Scrutinizing the 95-100 GeV di-tau excess in the top associated process
• Conformal Complex Singlet Extension of the Standard Model: Scenario for Dark Matter and a Second Higgs Boson
• Scotogenic $U(1{)}_{L_{\mu }-L_{\tau }}$ origin of $(g-2{)}_{\mu }$, W-mass anomaly and 95 GeV excess
• Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle $X$ in hadronic final states using $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Collider Constraints and Prospects of a Scalar Singlet Extension to Higgs Portal Dark Matter
• Search for resonant pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Revisiting $B_s\to {\mu }^{+}{\mu }^{-}$ in the two-Higgs doublet models with $Z_2$ symmetry
• Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Dark Matter Phenomenology in 2HDMS in light of the 95 GeV excess
• Maximum value of the spin-independent cross section in the THDM+a
• Spectroscopy of Scalar Mediators to Dark Matter at the LHC and at 100 TeV
• Search for a charged Higgs boson decaying into a heavy neutral Higgs boson and a W boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Chasing the two-Higgs doublet model in the di-Higgs production
• Interference effects of two scalar boson propagators on the LHC search for the singlet fermion DM
• CP-violation, Asymmetries and Interferences in $t\bar{t}\varphi$
• Decays of Higgs Bosons in the Standard Model and Beyond
• Search for the exotic decay of the Higgs boson into two light pseudoscalars with four photons in the final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Constraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV $pp$ collision data with two top quarks and missing transverse momentum in the final state
• Search for a massive scalar resonance decaying to a light scalar and a Higgs boson in the four b quarks final state with boosted topology
• Electroweak Corrections to the Charm-Top-Quark Contribution to ${\epsilon }_K$
• Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for $CP$ violation in ttH and tH production in multilepton channels in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• A search for heavy Higgs bosons decaying into vector bosons in same-sign two-lepton final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for a scalar or pseudoscalar dilepton resonance produced in association with a massive vector boson or top quark-antiquark pair in multilepton events at $\sqrt{s}$ = 13 TeV
• Search for new physics in multijet events with at least one photon and large missing transverse momentum in proton-proton collisions at 13 TeV
• Search for dark matter produced in association with a Higgs boson decaying to tau leptons at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for new particles in an extended Higgs sector with four b quarks in the final state at $\sqrt{s}=$ 13 TeV

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• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• Bayesian Active Search on Parameter Space: a 95 GeV Spin-0 Resonance in the ($B-L$)SSM
• Probing Type-I 2HDM light Higgs in the top-pair-associated diphoton channel
• Testing a 95 GeV Scalar at the CEPC with Machine Learning
• Particle-level transformers for 95 GeV Higgs boson searches at future $e^{+}{e}^{-}$ Higgs factories
• Interpretation of LHC excesses at 95 GeV and 152 GeV in an extended Georgi-Machacek model
• Dark-technicolour at colliders