Leptonic Meson Decays into Invisible ALP

Abstract

The theoretical calculation of pseudo-scalar leptonic decay widths into an invisible ALP, $M\to \ell {\nu }_{\ell }a$, is reviewed. Assuming generic flavour-conserving ALP couplings to SM fermions and a generic ALP mass, $m_a$, the latest experimental results for pseudo-scalar leptonic decays are used to provide updated bounds on the ALP-fermion Lagrangian sector. Constrains on the ALP-quark couplings obtained from these channels are not yet competitive with the ones derived from FCNC processes, like $M\to Pa$ decays. These leptonic decays can, however, provide the most stringent model-independent upper bounds on ALP-leptons couplings for $m_a$ in the (sub)-GeV range.

arXiv comment15 pages, 5 figures, 2 tables

References in corpus (39)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• New experimental approaches in the search for axion-like particles
• The Physics of the B Factories
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Probing MeV to 90 GeV axion-like particles with LEP and LHC
• Cosmological bounds on pseudo Nambu-Goldstone bosons
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• ALPs Effective Field Theory and Collider Signatures
• Revised constraints and Belle II sensitivity for visible and invisible axion-like particles
• New measurement of the K+ => pi+,nu,nubar branching ratio
• Dark Matter, Millicharges, Axion and Scalar Particles, Gauge Bosons, and Other New Physics with LDMX
• Redefining the Axion Window
• Quark Flavor Phenomenology of the QCD Axion
• Evidence for B- -> tau- nu_tau-bar with a Hadronic Tagging Method Using the Full Data Sample of Belle
• Search for $K_L\to {\pi }^0\nu \overline{\nu }$ and $K_L\to {\pi }^0{X}^0$ Decays at the J-PARC KOTO Experiment
• On a Light Spinless Particle Coupled to Photons
• A New Flavor of Searches for Axion-Like Particles
• Search for hidden-sector bosons in $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Search for long-lived scalar particles in $B^{+}\to K^{+}\chi ({\mu }^{+}{\mu }^{-})$ decays
• Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay Constant fD+
• Flavor constraints on electroweak ALP couplings
• New Bounds for Axions and Axion-Like Particles with keV-GeV Masses
• Searches for electron interactions induced by new physics in the EDELWEISS-III germanium bolometers
• Heavy Axion Opportunities at the DUNE Near Detector
• Axion couplings to electroweak gauge bosons
• New Directions for Axion Searches via Scattering at Reactor Neutrino Experiments
• Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constant
• Precision measurements of $B(D^{+}\to {\mu }^{+}{\nu }_{\mu })$, the pseudoscalar decay constant $f_{D^{+}}$, and the quark mixing matrix element $|V_{\mathrm{cd}}|$
• Supernova bound on Axion-Like Particles coupled with electrons
• A fresh look at ALP searches in fixed target experiments
• Search for $B^{+}\to {\mu }^{+}{\nu }_{\mu }$ and $B^{+}\to {\mu }^{+}N$ with inclusive tagging
• Implications of the dark axion portal for the muon g-2, B-factories, fixed target neutrino experiments and beam dumps
• A Search for the Rare Leptonic Decays B+ -> mu+ nu and B+ -> e+ nu
• Observation of the leptonic decay $D^{+}\to {\tau }^{+}{\nu }_{\tau }$
• Axions: From Magnetars and Neutron Star Mergers to Beam Dumps and BECs
• Measurement of the charged kaon lifetime with the KLOE detector
• Searching for super-WIMPs in leptonic heavy meson decays
• Search for a feebly interacting particle $X$ in the decay $K^{+}\to {\pi }^{+}X$
• Revisiting $K\to \pi a$ decays

Cited by in corpus (7)

• ALP production in weak mesonic decays
• Probing HNL-ALP couplings at colliders
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Hunting for a 17 MeV particle coupled to electrons
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Visible GeV ALP from TeV Vector-like Leptons
• Constraints on axion-like particles using lattice QCD calculations of the rate for $J/\psi \to \gamma a$