Majorana neutrino decay in an Effective Approach

Abstract

The search strategy or the finding of new effects for heavy neutrinos often relies on their different decay channels to detectable particles. In particular in this work we study the decay of a Majorana neutrino with interactions obtained from an effective general theory modeling new physics at the scale $\Lambda$. The results obtained are general because they are based in an effective theory and not in specific models. We are interested in relatively light heavy Majorana neutrinos, with masses lower than the $W$ mass ($m_N<m_W$). This mass range simplifies the study by reducing the possible decay modes. Moreover, we found that for $\Lambda \sim 1$ T$e$V, the neutrino plus photon channel could give explanation to different observations: we analyze the potentiality of the studied interactions to explain some neutrino-related problems like the MiniBooNE and SHALON anomalies. We show in different figures the dominant branching ratios and the decay length of the Majorana neutrino in this approach. This kind of heavy neutral leptons could be searched for in the LHC with the use of displaced vertices techniques. \

15 page, 5 figures

References in corpus (12)

• Neutrinos and Collider Physics
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
• Testing sterile neutrino extensions of the Standard Model at future lepton colliders
• Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Displaced Supersymmetry
• Study of ${\chi }_{cJ}$ decaying into $\varphi$ $K^{\ast }(892)$ $\bar{K}$
• Probing Baryogenesis with Displaced Vertices at the LHC
• Collider aspects of flavour physics at high Q
• Search for non-pointing and delayed photons in the diphoton and missing transverse momentum final state in 8 TeV $pp$ collisions at the LHC using the ATLAS detector
• Neutrino physics at large colliders
• Majorana neutrinos production at LHeC in an effective approach

Cited by in corpus (27)

• Sterile neutrino searches at future $e^{-}{e}^{+}$, $pp$, and $e^{-}p$ colliders
• Operators up to Dimension Seven in Standard Model Effective Field Theory Extended with Sterile Neutrinos
• Displaced vertex searches for sterile neutrinos at future lepton colliders
• Operator Bases in Effective Field Theories with Sterile Neutrinos: $d\le 9$
• Explaining the MiniBooNE excess by a decaying sterile neutrino with mass in the 250 MeV range
• Searches for Long-Lived Particles at the Future FCC-ee
• Higgs phenomenology as a probe of sterile neutrinos
• Effective portals to heavy neutral leptons
• Heavy neutral leptons in effective field theory and the high-luminosity LHC
• Probes of the Standard Model effective field theory extended with a right-handed neutrino
• One-loop running of dimension-six Higgs-neutrino operators and implications of a large neutrino dipole moment
• Higgs production from sterile neutrinos at future lepton colliders
• The see-saw portal at future Higgs factories: the role of dimension six operators
• The effective field theory of low scale see-saw at colliders
• Final taus and initial state polarization signatures from effective interactions of Majorana neutrinos at future $e^{+}{e}^{-}$ colliders
• Majorana neutrino signals at Belle-II and ILC
• Lepton collider probes for Majorana neutrino effective interactions
• Sterile neutrino and leptonic decays of the pseudoscalar mesons
• The Geometric $\nu$SMEFT: Operators and Connections
• Angular and polarization observables for Majorana-mediated B decays with effective interactions
• Majorana neutrinos with effective interactions in B decays
• Sensitivity prospects for lepton-trijet signals in the $\nu$SMEFT at the LHeC
• Effects of Majorana Physics on the UHE ${\nu }_{\tau }$ Flux Traversing the Earth
• From oversimplified to overlooked: the case for exploring Rich Dark Sectors
• Future collider sensitivities to $\nu$SMEFT interactions
• Sensitivity of $W$-boson measurements to low-mass right-handed neutrinos
• Photons coming from an opaque obstacle as a manifestation of heavy neutrino decays