ProbingR-parity violating models of neutrino mass at the LHC via top squark decays

2009/01/12 by Amitava Datta, S. Poddar, Sujoy Poddar · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Large Hadron Collider #Lepton #Lepton number #Lightest Supersymmetric Particle #Minimal Supersymmetric Standard Model #Neutralino #Neutrino #Neutrino Physics Research #Nuclear physics #Observable #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #R-parity #Statistics #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevd.79.075021

published as Phys.Rev.D79:075021,2009 · 19 pages, 1 Figure and 11 Tables

arxiv created 2009/01/12 · openalex publication_date 2009/04/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We show that the R-parity violating decays of the lighter top squarks (\stackrel\texttildelowt₁) triggered by the lepton number violating couplings \ensuremathλ_i33^\ensuremath', where the lepton family index i=1--3, can be observed at the LHC via the dilepton dijet channel even if the coupling is as small as 10^\ensuremath-4 or 10^\ensuremath-5. This is the case in several models of neutrino mass, provided the \stackrel\texttildelowt₁ is the next lightest supersymmetric particle and the lightest neutralino is the lightest supersymmetric particle. First, we have obtained a fairly model-independent estimate of the minimum observable value of the parameter [P_ij\ensuremath≡BR(\stackrel\texttildelowt\ensuremath→l_i⁺b)\ifmmode×\else\texttimes\fiBR(\stackrel\texttildelowt^*\ensuremath→l_j^\ensuremath-b)] at the LHC for an integrated luminosity of 10 fb^\ensuremath-1 as a function of m_\stackrel\texttildelowt₁ by a standard Pythia based analysis. We have then computed the parameter P_ij in several representative models of neutrino mass constrained by the neutrino oscillation data and have found that the theoretical predictions are above the estimated minimum observable levels for a wide region of the parameter space.

Citations

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• Low-energy supergravity: False vacua and vacuous predictions
• Neutrinoless double beta decay with R-parity violation
• Status of global fits to neutrino oscillations
• Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
• Neutrinoless double-β decay: Status and future
• Measurement of the Rate ofνe+d→p+p+e−Interactions Produced byB<mml:mprescripts/>8Solar Neutrinos at the Sudbury Neutrino Observatory
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Electroweakino searches at the HL-LHC in the baryon number violating MSSM
• LHC signatures of neutrino mass generation throughR-parity violation