Mono-jet, -photon and -Z Signals of a Supersymmetric (B-L) model at the Large Hadron Collider

Abstract

Search for invisible final states produced at the Large Hadron Collider (LHC) by new physics scenarios are normally carried out resorting to a variety of probes emerging from the initial state, in the form of single-jet, -photon and -$Z$ boson signatures. These are particularly effective for models of Supersymmetry (SUSY) in presence of $R$-parity conservation, owing to the presence in their spectra of a stable neutralino as dark matter candidate. We assume here as theoretical framework Supersymmetric ($B-L$) extension of the Standard Model (BLSSM), wherein a mediator for invisible decays can be $Z^{\prime }$ boson. The peculiarity of the signal is thus that the final state objects carry a very large (transverse) missing energy, since the $Z^{\prime }$ is naturally massive and constrained by direct searches and electro-weak precision tests to be at least in TeV scale region. Under these circumstances the efficiency in accessing the invisible final state and rejecting the standard model background is very high. This somehow compensates the rather meagre production rates. Another special feature of this invisible BLSSM signal is its composition, which is often dominated by sneutrino decays (alongside the more traditional neutrino and neutralino modes). Sensitivity of the CERN machine to these two features can therefore help disentangling the BLSSM from more popular SUSY models. We assess in this analysis the scope of the LHC in establishing the aforementioned invisible signals through a sophisticated signal-to-background simulation carried out in presence of parton shower, hadronisation and detector effects. We find that significant sensitivity exists already after 300 fb${}^{-1}$ during Run 2. We find that mono-jet events can be readily accessible at the LHC, so as to enable one to claim a prompt discovery, while mono-photon and -$Z$ signals can be used as diagnostic tools of the underlying scenario.

21 pages, 13 figures and 9 tables

References in corpus (18)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
• SARAH 3.2: Dirac Gauginos, UFO output, and more
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• The Minimal Set of Electroweak Precision Parameters
• Low scale B-L extension of the Standard Model at the LHC
• Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Testability of Type I Seesaw at the CERN LHC: Revealing the Existence of the B-L Symmetry
• Radiative B-L symmetry breaking in supersymmetric models
• Searching for Dark Matter at the LHC with a Mono-Z
• The Fate of R-Parity
• Proposal for generalised Supersymmetry Les Houches Accord for see-saw models and PDG numbering scheme
• Heavy neutrinos and neutral gauge boson Z' at the LHC
• New Physics at the LHC: A Les Houches Report. Physics at Tev Colliders 2007 -- New Physics Working Group
• Higgs phenomenology in the minimal $B-L$ extension of the Standard Model at LHC

Cited by in corpus (21)

• Production of Heavy neutrino in next-to-leading order QCD at the LHC and beyond
• Naturalness and Dark Matter in the BLSSM
• Radiative Neutrino Mass with $Z_3$ Dark matter: From Relic Density to LHC Signatures
• Search for Mono-Higgs Signals at the LHC in the B-L Supersymmetric Standard Model
• Pair production of heavy neutrinos in next-to-leading order QCD at the hadron colliders in the inverse seesaw framework
• Mono-Higgs signature in fermionic dark matter model
• Muon $(g-2)$ in the B-LSSM
• Sparticle Spectroscopy and Dark Matter in a $U(1{)}_{B-L}$ extension of MSSM
• Quasi Yukawa Unification and Fine-Tuning in U(1) Extended SSM
• Inverse seesaw and dark matter in a gauged $\mathrm{B}-\mathrm{L}$ extension with flavour symmetry
• Dark Matter in B-L Supersymmetric Standard Model with Inverse Seesaw
• Least Fine-Tuned U(1) Extended SSM
• Long-Lived BLSSM Particles at the LHC
• Radiative Symmetry breaking, Cosmic Strings and Observable Gravity Waves in $U(1{)}_R$ symmetric $SU(5)\times U(1{)}_{\chi }$
• $SO(10)$ inspired $Z^{\prime }$ models at the LHC
• Dark Matter Spin Characterisation in Mono-$Z$ Channels
• Resonant mono Higgs at the LHC
• Exploring Four Fermion Contact Couplings of a Dark Fermion and an Electron at Hadron Colliders and Direct Detection Experiments
• Heavy $Z^{\prime }$ Bosons in the Secluded $U(1{)}^{\prime }$ Model at Hadron Colliders
• Constraining Gluonic Contact Interaction of a Neutrino-philic Dark Fermion at Hadron Colliders and Direct Detection Experiments
• Using leptons $p_T$ measurements to constrain $Z^{\prime }$-bosons widths in Drell-Yan processes at the LHC