Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays

Abstract

A search for heavy Majorana neutrinos produced in the $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decay mode is performed using 3 fb${}^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at center-of-mass energies of 7 TeV and 8 TeV at the LHC. Neutrinos with masses in the range 250-5000 MeV and lifetimes from zero to 1000 ps are probed. In the absence of a signal, upper limits are set on the branching fraction $\mathcal{B}(B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-})$ as functions of neutrino mass and lifetime. These limits are on the order of $10^{-9}$ for short neutrino lifetimes of 1 ps or less. Limits are also set on the coupling between the muon and a possible fourth-generation neutrino.

6 pages, 6 figures

References in corpus (3)

• PYTHIA 6.4 Physics and Manual
• Search for heavy neutrinos and right-handed W bosons in events with two leptons and jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Search for heavy Majorana neutrinos in mu+mu+[mu-mu-]+jets and e+e+[e-e-]+jets events in pp collisions at sqrt(s) = 7 TeV

Cited by in corpus (44)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• Sterile Neutrinos
• The Present and Future Status of Heavy Neutral Leptons
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Sterile neutrino searches via displaced vertices at LHCb
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• Uniting low-scale leptogeneses
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Searches for Lepton Number Violation and Resonances in $K^{\pm }\to \pi \mu \mu$ Decays
• Search for heavy neutral leptons in decays of $W$ bosons using a dilepton displaced vertex in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Unleashing the full power of LHCb to probe Stealth New Physics
• Lepton number violation by heavy Majorana neutrino in $B$ decays
• Study Majorana Neutrino Contribution to B-meson Semi-leptonic Rare Decays
• Heavy Neutrinos at the FCC-hh in the $U(1{)}_{B-L}$ Model
• Left-Right Symmetric Models at the High-Intensity Frontier
• Discovering intermediate mass sterile neutrinos through ${\tau }^{-}\to {\pi }^{-}{\mu }^{-}{e}^{+}\nu$ (or $\bar{\nu }$) decay
• Probing HNL-ALP couplings at colliders
• Testing the seesaw mechanisms via displaced right-handed neutrinos from a light scalar at the HL-LHC
• Search for long-lived particles decaying to $e^{\pm }{\mu }^{\mp }\nu$
• Flavor Physics at the CEPC: a General Perspective
• Baryogenesis and Dark Matter from Freeze-In
• Effective field theory approach to lepton number violating $\tau$ decays
• Interference effect in lepton number violating and conserving meson decays for a left-right symmetric model
• Probing baryon asymmetry of the Universe at LHC and SHiP
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Leptophilic Axion-like Particles at Forward Detectors
• Towards a Localised S-Matrix Theory
• CP violation with GeV-scale Majorana neutrino in ${\Lambda }_b\to ({\Lambda }_c^{+},p^{+}){\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Hidden-Sector Neutrinos and Freeze-In Leptogenesis
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Sterile neutrinos in ${\Lambda }_b^0\to ({\Lambda }_c^{+},p^{+}){\ell }_1^{-}{\ell }_2^{-}{\ell }_3^{+}\nu$ decays
• Search for a heavy neutral lepton that mixes predominantly with the tau neutrino
• Dark Matter and Neutrino Masses in a Portalino-like Model
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Search for the lepton number violation decay $\varphi \to {\pi }^{+}{\pi }^{+}{e}^{-}{e}^{-}$ via $J/\psi \to \varphi \eta$
• QCD Running in Lepton Number Violating Meson and Tau Decays
• Search for the lepton number violation decay $\omega \to {\pi }^{+}{\pi }^{+}{e}^{-}{e}^{-}+c.c.$
• CP violation in $B_s$ decays mediated by two nearly-degenerate Majorana neutrinos
• Search for lepton-number-violating $B^{-}\to D^{(\ast )+}{\mu }^{-}{\mu }^{-}$ decays
• Searches for Light Exotics at LHCb
• Search for the lepton number violating decay $\eta \to {\pi }^{+}{\pi }^{+}{e}^{-}{e}^{-}+c.c.$ via $J/\psi \to \varphi \eta$
• How many new particles do we need after the Higgs boson?
• Summary of the CKM 2014 working group on rare decays