Towards ruling out the charged Higgs interpretation of the $R_{D^{(\ast )}}$ anomaly

Abstract

Motivated by the notorious anomaly in the lepton flavor universality ratios $R_{D^{(\ast )}}$, we study the sensitivity of the Large Hadron Collider (LHC) to a low-mass charged Higgs boson $H^{-}$ lighter than $400$GeV in a generic two Higgs doublet model. A combination of current constraints from the $B_c\to \tau \nu$ decay, $B_s$ meson mixing data, tau sleptons and di-jet searches at the LHC allows to explain the $R_{D^{(\ast )}}$ anomaly at the $1\sigma$ level by a low-mass charged Higgs. In this context, we estimate the reach of an LHC search for resonant $H^{-}$ production, where the final state contains an energetic $\tau$ lepton decaying hadronically, a neutrino with large transverse momentum, and an additional $b$-jet ($pp\to b+{\tau }_h+\nu$). Requiring the additional $b$-tagged jet in the $\tau \nu$ resonance search profits from the suppression of the Standard Model background, and therefore it allows us to judge the low-mass $H^{-}$ interpretation of the $R_{D^{(\ast )}}$ anomaly. To demonstrate this, we perform a fast collider simulation for the $\tau \nu$ resonance search with an additional $b$-tagged jet, and find that most of the interesting parameter region of the whole mass range can already be probed with the current integrated luminosity of $139$fb${}^{-1}$.

arXiv comment18 pages, 5 figures, 3 tables. JHEP published version

References in corpus (71)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Parton distributions with LHC data
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Evidence for an excess of B -> D(*) Tau Nu decays
• Measurement of an Excess of B -> D(*) Tau Nu Decays and Implications for Charged Higgs Bosons
• Measurement of the branching ratio of $\bar{B}\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to $\bar{B}\to D^{(\ast )}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with hadronic tagging at Belle
• Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• Measurement of the $\tau$ lepton polarization and $R(D^{\ast })$ in the decay $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$
• On the B to D* tau nu Sensitivity to New Physics
• ATLAS $b$-jet identification performance and efficiency measurement with $t\bar{t}$ events in $pp$ collisions at $\sqrt{s}=13$ TeV
• Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
• Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
• Measurement of the branching ratio of ${\bar{B}}^0\to D^{\ast +}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with a semileptonic tagging method
• Phenomenology of Two Higgs Doublet Models with Flavor Changing Neutral Currents
• Test of Lepton Flavor Universality by the measurement of the $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ branching fraction using three-prong $\tau$ decays
• Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi {\tau }^{+}{\nu }_{\tau })$/$\mathcal{B}(B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu })$
• Combined analysis of semileptonic $B$ decays to $D$ and $D^{\ast }$: $R(D^{(\ast )})$, $|V_{cb}|$, and new physics
• The $B\to D\ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD
• General CP Violation in Minimal Left-Right Symmetric Model and Constraints on the Right-Handed Scale
• Explaining B->Dτν, B->D*τνand B->τνin a 2HDM of type III
• A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model
• Revisiting $B\to D\ell \nu$
• Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
• Performance of reconstruction and identification of $\tau$ leptons decaying to hadrons and ${\nu }_{\tau }$ in pp collisions at $\sqrt{s}=$ 13 TeV
• $R_{D^{(\ast )}}$ anomaly: A possible hint for natural supersymmetry with $R$-parity violation
• A fresh look at the determination of |V_cb| from B-> D^* l nu
• $R(D^{(\ast )})$ in a general two Higgs doublet model
• The $V_{cb}$ puzzle: an update
• $\Delta M_s$ theory precision confronts flavour anomalies
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry
• Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly
• Status of the semileptonic $B$ decays and muon g-2 in general 2HDMs with right-handed neutrinos
• Addendum to "Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly"
• Theory determination of $\bar{B}\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ form factors at $\mathcal{O}(1/m_c^2)$
• Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation
• Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at sqrt(s) = 13 TeV
• Bayesian fit analysis to full distribution data of $\bar{B}\to D^{(\ast )}\ell \bar{\nu }$: $|V_{cb}|$ determination and New Physics constraints
• $D^{\ast }$ polarization vs. $R_{D^{(\ast )}}$ anomalies in the leptoquark models
• Delta F = 2 observables and B -> X_q gamma decays in the Left-Right Model: Higgs particles striking back
• Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast })$ with a semileptonic tagging method
• Ubiquitous CP violation in a top-inspired left-right model
• Search for a W' boson decaying to a $\tau$ lepton and a neutrino in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Discerning New Physics in Top-Antitop Production using Top Spin Observables at Hadron Colliders
• Scalar doublet models confront $\tau$ and $b$ anomalies
• Testing Leptoquark/EFT in $\bar{B}\to D^{(\ast )}l\bar{\nu }$ at the LHC
• TeV Scale Left Right Symmetry and Flavor Changing Neutral Higgs Effects
• 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
• Testing the 2HDM explanation of the muon g-2 anomaly at the LHC
• Test of the $R(D^{(\ast )})$ anomaly at the LHC
• Search for a singly produced third-generation scalar leptoquark decaying to a $\tau$ lepton and a bottom quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Bottom-Flavored Mono-Tau Tails at the LHC
• Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Standard Model prediction of the $B_c$ lifetime
• Measurement of the $D^{\ast -}$ polarization in the decay $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$
• Probing a simplified, $W^{\prime }$ model of $R(D^{(\ast )})$ anomalies using $b$-tags, $\tau$ leptons and missing energy
• Beyond $\mathcal{R}(D^{(\ast )})$ with the general 2HDM-III for $b\to c\tau \nu$
• Search for W' decaying to tau lepton and neutrino in proton-proton collisions at sqrt(s) = 8 TeV
• Non-resonant new physics search at the LHC for the $b\to c\tau \nu$ anomalies
• Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model
• Towards a viable scalar interpretation of $R_{D^{(\ast )}}$
• $B\to D^{(\ast )}\tau {\nu }_{\tau }$ in the 2HDM with an anomalous $\tau$ coupling
• Analysing the charged scalar boson contribution to the charged-current $B$ meson anomalies
• Lepton Flavour Violation in Left-Right Theory
• Flavor physics in the multi-Higgs doublet models induced by the left-right symmetry
• Higgs Bosons in a minimal R-parity conserving left-right supersymmetric model
• Short-distance QCD corrections to $K^0{\bar{K}}^0$ mixing at next-to-leading order in Left-Right models
• Importance of vector leptoquark-scalar box diagrams in Pati-Salam unification with vector-like families
• Higgs flavor phenomenology in a supersymmetric left-right model with parity

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• Review of Semileptonic $B$ Anomalies
• Coup de grace to the charged Higgs solution of $P_5^{\prime }$ and $R_{D^{(\ast )}}$ discrepancies
• Prospects for $B_c^{+}$ and $B^{+}\to {\tau }^{+}{\nu }_{\tau }$ at FCC-ee
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• $B_s\to {\mu }^{+}{\mu }^{-}$ in a Two-Higgs-Doublet Model with flavour-changing up-type Yukawa couplings
• Flavor phenomenology of an extended 2HDM with inverse seesaw mechanism
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