Rare Kaon Decay to Missing Energy: Implications of the NA62 Result for a $Z^{\prime }$ Model

Abstract

Meson decays offer a good opportunity to probe new physics. The rare kaon decay $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ is one of the cleanest of them and, for this reason, is rather sensitive to new physics, in particular, vector mediators. NA62 collaboration, running a fixed-target experiment at CERN, recently reported an unprecedented sensitivity to this decay, namely a branching fraction of $BR(K^{+}\to {\pi }^{+}\nu \bar{\nu })=(11_{-3.5}^{+4.0})\times 10^{-11}$ at 68\% C.L. Vector mediators that couple to neutrinos may yield a sizeable contribution to this decay. Motivated by the new measurement, we interpret this result in the context of a concrete $Z^{\prime }$ model, and put our findings into perspective with the correlated $K_L\to {\pi }^0\nu \bar{\nu }$ decay measured by KOTO collaboration, current, and future colliders, namely the High-Luminosity and High-Energy LHC.

References in corpus (22)

• Two-Loop Electroweak Corrections for the K -> pi nu anti-nu Decays
• Electroweak Corrections to the Charm Quark Contribution to K+ -> pi+ nu nu-bar
• The Anatomy of Quark Flavour Observables in 331 Models in the Flavour Precision Era
• Explaining $(g-2{)}_{\mu ,e}$, the KOTO anomaly and the MiniBooNE excess in an extended Higgs model with sterile neutrinos
• Connection of $g-2_{\mu }$, electroweak, dark matter, and collider constraints on 331 models
• New physics implications of recent search for $K_L\to {\pi }^0\nu \bar{\nu }$ at KOTO
• Constraining Flavor Changing Interactions from LHC Run-2 Dilepton Bounds with Vector Mediators
• Study of the $K_L\to {\pi }^0\nu \overline{\nu }$ Decay at the J-PARC KOTO Experiment
• Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation, $g-2$ and Collider Searches
• An investigation of the very rare $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay
• Light gauge boson interpretation for $(g-2{)}_{\mu }$ and the $K_L\to {\pi }^0+\text{(invisible)}$ anomaly at the J-PARC KOTO experiment
• Low Scale $U(1{)}_X$ Gauge Symmetry as an Origin of Dark Matter, Neutrino Mass and Flavour Anomalies
• Lepton masses and mixings in a $T^{\prime }$ flavoured 3-3-1 model with type I and II seesaw mechanisms
• Dead or Alive? Implications of the Muon Anomalous Magnetic Moment for 3-3-1 Models
• Physical constraints derived from FCNC in the 3-3-1-1 model
• Dark matter stability from Dirac neutrinos in scotogenic 3-3-1-1 theory
• Collider Phenomenology of the 3-3-1 Model
• Limits on 331 vector bosons from LHC proton collision data
• Dynamical Symmetry Breaking and Fermion Mass Hierarchy in the Scale-Invariant 3-3-1 Model
• Another SMEFT Story: $Z^{\prime }$ Facing New Results on ${\epsilon }^{\prime }/\epsilon$, $\Delta M_K$ and $K\to \pi \nu \bar{\nu }$
• $(g-2{)}_{\mu }$ Versus $K\to \pi +E_{miss}$ Induced by the $(B-L{)}_{23}$ Boson
• Brazilian Community Report on Dark Matter

Cited by in corpus (5)

• Constraining 3-3-1 Models at the LHC and Future Hadron Colliders
• A model for mixed warm and hot right-handed neutrino dark matter
• On the viability of a light scalar spectrum for 3-3-1 models
• Dark photon effect on the rare kaon decay $K_L\to {\pi }^0\nu \bar{\nu }$
• Probing Leptophobic Dark Sectors via Gravitational Wave Signatures