Broken R-parity, stop decays, and neutrino physics

Abstract

We discuss the phenomenology of the lightest stop in models where R-parity is broken by bilinear superpotential terms. In this class of models we consider scenarios where the R-parity breaking two-body decay ~t_1->τ^+b competes with the leading three-body decays such as ~t_1->W^+b~χ^0_1. We demonstrate that the R-parity violating decay can be sizable and in some parts of the parameter space even the dominant one. Moreover we discuss the expectations for t_1->μ^+b and ~t_1->e^+b. The recent results from solar and atmospheric neutrinos suggest that these are as important as the tau bottom mode. The t_1->l^+b decays are of particular interest for hadron colliders, as they may allow a full mass reconstruction of the lighter stop. Moreover these decay modes allow cross checks on the neutrino mixing angle involved in the solar neutrino puzzle complementary to those possible using neutralino decays. For the so--called small mixing angle or SMA solution ~t_1->e^+b should be negligible, while for the large mixing angle type solutions all ~t_1->l^+b decays should have comparable magnitude.

51 pages, 6 figures, LaTeX2e and RevTeX4, published version

References in corpus (3)

• Testing neutrino mixing at future collider experiments
• Three-Body Decays of Top and Bottom Squarks
• Search for Spontaneous R-parity violation at sqrt(s) = 183 GeV and 189 GeV

Cited by in corpus (32)

• R-parity violating supersymmetry
• The Hunt for New Physics at the Large Hadron Collider
• Solar Neutrino Masses and Mixing from Bilinear R-Parity Broken Supersymmetry: Analytical versus Numerical Results
• Supersymmetric Origin of Neutrino Mass
• Neutrino properties and the decay of the lightest supersymmetric particle
• Probing bilinear R-parity violating supergravity at the LHC
• Probing neutrino properties with charged scalar lepton decays
• Spontaneous R-Parity Breaking, Stop LSP Decays and the Neutrino Mass Hierarchy
• Analysis of enhanced tan(beta) corrections in MFV GUT scenarios
• A search for $B-L$ $R$-parity-violating top squarks in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS experiment
• Invisible Higgs Boson Decays in Spontaneously Broken R-Parity
• Probing neutrino mass with displaced vertices at the Tevatron
• Spontaneous R-parity violation: Lightest neutralino decays and neutrino mixing angles at future colliders
• Reconstructing Neutrino Properties from Collider Experiments in a Higgs Triplet Neutrino Mass Model
• Production and decays of supersymmetric Higgs bosons in spontaneously broken R-parity
• Probing Neutrino Oscillations in Supersymmetric Models at the Large Hadron Collider
• R-parity violating sneutrino decays
• Search for Pair Production of Scalar Top Quarks Decaying to a tau Lepton and a b Quark in ppbar Collisions at sqrt{s}=1.96 TeV
• The decays gluino -> stop_1 b-quark W and gluino -> stop_1 c-quark and phenomenological implications in supersymmetric theories
• Top squark and neutralino decays in a R-parity violating model constrained by neutrino oscillation data
• Probing neutrino mass with multilepton production at the Tevatron in the simplest R-parity violation model
• Probing R-parity violating models of neutrino mass at the LHC via top squark decays
• Probing R-parity violating models of neutrino mass at the Tevatron via top Squark decays
• Rare Weak Decays and Direct Lepton Number Violating Signals in a Minimal R-Parity Violating Model of Neutrino Mass
• LHC signatures of neutrino mass generation through R-parity violation
• New signals of a R-parity violating model of neutrino mass at the Tevatron
• Neutrinos in Anomaly Mediated Supersymmetry Breaking with R-Parity Violation
• LHC phenomenology of supersymmetric models beyond the MSSM
• Spontaneous R-parity violation and the origin of neutrino mass
• Standard and non-standard neutrino properties
• Markov Chain Monte Carlo analysis to probe trilinear $R$-parity violating SUSY scenarios and possible LHC signatures
• Probing Neutrino Parameters at Accelerators