Exclusive rare Higgs decays into lepton pair and light mesons

Abstract

Exclusive rare Higgs decays into lepton pair plus one light hadron, such as $h\to {\rho }^0(\omega )\ell \bar{\ell }$, $h\to {\pi }^0\ell \bar{\ell }$, $h\to {\pi }^{+}(K^{+}){\ell }^{-}{\bar{\nu }}_{\ell }$, and $h\to {\rho }^{+}(K^{\ast +}){\ell }^{-}{\bar{\nu }}_{\ell }$, have been explored in the standard model. Decay amplitudes are dominantly from the Higgs couplings to gauge bosons and to charged leptons, and their branching ratios are predicted in the range of $10^{-8}\sim 10^{-5}$. We have also analyzed the differential dilepton invariant mass and angular distributions of $h\to {\rho }^0{\ell }^{+}{\ell }^{-}$ decays. It will be challenging to search for these rare processes. Nevertheless, experimental studies of them, in particular, $h\to {\rho }^0{\ell }^{+}{\ell }^{-}$ with $\ell =e,\mu$, might be interesting both to help deepen our understanding of the standard model and to probe new physics beyond the standard model in the future high-precision experiments.

arXiv comment12 pages, 4 figures

References in corpus (37)

• 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
• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• 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
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Measurements of Higgs boson properties in the diphoton decay channel with 36 fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Higgs boson decays to quarkonia and the Hccbar coupling
• Search for a Higgs boson decaying into a Z and a photon in pp collisions at sqrt(s) = 7 and 8 TeV
• A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
• An Exclusive Window onto Higgs Yukawa Couplings
• Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector
• Probing the nature of the Higgs-like Boson via h -> VF decays
• Search for Higgs boson decays to a photon and a Z boson in pp collisions at sqrt(s)=7 and 8 TeV with the ATLAS detector
• Measurement and interpretation of differential cross sections for Higgs boson production at $\sqrt{s}=$ 13 TeV
• A search for the $Z\gamma$ decay mode of the Higgs boson in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for Higgs and $Z$ Boson Decays to $J/\psi \gamma$ and ${\rm Y}(nS)\gamma$ with the ATLAS Detector
• Higgs Boson Production and Decay: Dalitz Sector
• New Observables for CP Violation in Higgs Decays
• Nonstandard Higgs Couplings from Angular Distributions in $h\to Z{\ell }^{+}{\ell }^{-}$
• Radiative Higgs Boson Decays H -> f fbar gamma
• Calculation of the decay ${\bm H\bm\to\bm e\bar{\bm e}\bm\ga}$
• Reconstructing the 125 GeV SM Higgs Boson Through $\ell \bar{\ell }\gamma$
• Higgs decay into a lepton pair and a photon revisited
• A note on Higgs decays into $Z$ boson and $J/\Psi ({\rm Y})$
• Internal conversions in Higgs decays to two photons
• Search for a Higgs boson decaying into gamma* gamma to ll gamma with low dilepton mass in pp collisions at sqrt(s) = 8 TeV
• Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair
• Polarization effects in the Higgs boson decay to gamma Z and test of CP and CPT symmetries
• Search for Higgs and $Z$ Boson Decays to $\varphi \gamma$ with the ATLAS Detector
• Probing anomalous Higgs couplings in $H\to ZV$ decays
• Probing New Physics in Higgs Couplings to Fermions using an Angular Analysis
• Higgs boson decay to mu mubar gamma
• Comparison of $H\to \ell \bar{\ell }\gamma$ and $H\to \gamma Z,Z\to \ell \bar{\ell }$ including the ATLAS cuts
• Seeking the CP-odd Higgs via $h\to {\eta }_{c,b}{\ell }^{+}{\ell }^{-}$
• On Exclusive $h\to V{\ell }^{+}{\ell }^{-}$ Decays
• Higgs boson decay $h^0\to m_{V}Z$ in the BLMSSM
• On the $h\to V{\ell }^{+}{\ell }^{-}$ decays

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