Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U(1{)}_{B-L}$ model

Abstract

We investigate the pair-production of Right-Handed Neutrinos (RHNs) via a $B-L$ $Z^{\prime }$ boson and the detection prospects at the High-Luminosity run of the LHC (HL-LHC) and a future $pp$ collider (FCC-hh). We focus on RHN states with a mass of $10-70$ GeV which naturally results in displaced vertices for small active-sterile mixing strengths. Being produced through a mass resonance with $m_{Z^{\prime }}\ge 1$ TeV, the RHNs are heavily boosted, leading to collimated decay products that give rise to fat-jets. We investigate the detection prospect of dedicated signatures in the inner detector and the muon spectrometer, namely a pair of displaced fat-jets and the associated tracks, respectively. We find that both the HL-LHC and FCC-hh can be sensitive to small active-sterile mixing $V_{\mu N}>10^{-6}$ and $V_{\mu N}>10^{-7}$ with the number of events reaching $\mathcal{O}(10)$ and $\mathcal{O}(10^3)$, respectively. This allows probing the generation of light neutrino masses through the Seesaw mechanism in this scenario.

arXiv comment29 pages, 17 figures, Contribution to Snowmass 2021

References in corpus (47)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• FastJet user manual
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• LHAPDF6: parton density access in the LHC precision era
• UFO - The Universal FeynRules Output
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• Better Jet Clustering Algorithms
• FeynRules - Feynman rules made easy
• Z-prime Gauge Bosons at the Tevatron
• A standard format for Les Houches Event Files
• Search for high-mass dilepton resonances using 139 fb${}^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector
• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
• The Minimal Set of Electroweak Precision Parameters
• Higgs self-coupling measurements at the LHC
• Phenomenology of GeV-scale Heavy Neutral Leptons
• Search for resonant and nonresonant new phenomena in high-mass dilepton final states at $\sqrt{s}=$ 13 TeV
• Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Search for heavy neutral leptons in decays of $W$ bosons produced in 13 TeV $pp$ collisions using prompt and displaced signatures with the ATLAS detector
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Observation of Parity Nonconservation in Moller Scattering
• Lepton Number Violation in Higgs Decay at LHC
• Heavy Neutrinos in displaced vertex searches at the LHC and HL-LHC
• Inclusive search for a highly boosted Higgs boson decaying to a bottom quark-antiquark pair
• Keung-Senjanović process at LHC: from LNV to displaced vertices to invisible decays
• Long-lived Heavy Neutrinos from Higgs Decays
• Sterile neutrino searches via displaced vertices at LHCb
• Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The HepMC3 Event Record Library for Monte Carlo Event Generators
• Search for long-lived particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer
• Displaced vertices as probes of sterile neutrino mixing at the LHC
• Shedding Light on Neutrino Masses with Dark Forces
• Searches for light sterile neutrinos with multitrack displaced vertices
• Long-lived TeV-scale right-handed neutrino production at the LHC in gauged $U(1{)}_X$ model
• Search for heavy Majorana or Dirac neutrinos and right-handed $W$ gauge bosons in final states with two charged leptons and two jets at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at sqrt(s)=7 TeV with the ATLAS detector
• Search for long-lived neutral particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter
• Search for a right-handed gauge boson decaying into a high-momentum heavy neutrino and a charged lepton in $pp$ collisions with the ATLAS detector at $\sqrt{s}=13$ TeV
• Displaced heavy neutrinos from $Z^{\prime }$ decays at the LHC
• Inclusive Displaced Vertex Searches for Heavy Neutral Leptons at the LHC
• Search for long-lived particles using displaced jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for long-lived particles decaying into displaced jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for long-lived neutral particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer
• Seeking for sterile neutrinos with displaced leptons at the LHC
• Heavy resonances at energy-frontier hadron colliders
• $hh+\text{jet}$ production at 100 TeV