Model-independent search strategy for the lepton-flavor-violating heavy Higgs boson decay to $\tau \mu$ at the LHC

Abstract

In this work we present a model-independent search strategy at the LHC for heavy Higgs bosons decaying into a tau and a muon, $H/A\to \tau \mu$, showing a plausible tendency to improve the sensitivity obtained by the present experimental limits. This search strategy is performed for the Higgs boson mass range 1-5 TeV and uses as the most relevant kinematical variables, in order to discriminate signal against background, the transverse momenta of the muon and the tau together with the missing transverse energy. We estimate the exclusion limits at 95% C.L. and the significances for evidence and discovery at $\sqrt{s}$ = 14 TeV with $\mathcal{L}$ = 300 fb${}^{-1}$, observing a growth in the sensitivities for high Higgs boson masses. Moreover, since the Higgs boson decay into a $\tau$-lepton pair may mimic our LFV signal, we also study the impact of the ditau channel on the exclusion limits and the significances for evidence and discovery. In particular, the impact on the exclusion limits of LFV heavy Higgs boson decays is significant when the ditau rate begins to compete with the corresponding to the $H/A\to \tau \mu$ decay.

arXiv comment13 pages, 7 figures. New appendix added. Published version

References in corpus (18)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Flavor Violating Higgs Decays
• Search for the Lepton Flavour Violating Decay ${\mu }^{+}\to e^{+}\gamma$ with the Full Dataset of the MEG Experiment
• Search for lepton flavour violating decays of the Higgs boson to e tau and e mu in proton-proton collisions at sqrt(s) = 8 TeV
• Search for lepton flavour violating decays of the Higgs boson to $\mu \tau$ and e$\tau$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• LHC sensitivity to the decay of a Higgs boson to tau mu
• Asymmetric lepton-flavor violating Higgs decays
• Safe Jet Vetoes
• New Signatures of Flavor Violating Higgs Couplings
• Search for lepton-flavor violating decays of heavy resonances and quantum black holes to e$\mu$ final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Probing Lepton Flavor Violation at the 13 TeV LHC
• Flavor Changing Heavy Higgs Interactions with Leptons at Hadron Colliders
• Search for lepton-flavour-violating decays of Higgs-like bosons

Cited by in corpus (8)

• Search for lepton flavour violating decays of the Higgs boson to $\mu \tau$ and e$\tau$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for lepton flavour violating decays of a neutral heavy Higgs boson to $\mu \tau$ and e$\tau$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Collider Constraints on Lepton Flavor Violation in the 2HDM
• Probing Lepton Flavor Violating decays in MSSM with Non-Holomorphic Soft Terms
• Constraining Lepton Flavor Violating Higgs Couplings at the HL-LHC in the Vector Boson Fusion Channel
• Probing chirality structure in lepton-flavour-violating Higgs decay $h\to \tau \mu$ at the LHC
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles
• Searching for exotic Higgs bosons from top quark decays at the HL-LHC