Polarization of $\tau$ lepton from scalar tau decay as a probe of neutralino mixing

Abstract

The $\tau$ lepton arising from the scalar tau ($\st$) decay is naturally polarized. $\ptau$ depends on the left--right mixing of the $\st$ and the gaugino--higgsino mixing of the neutralino. The polarization $\ptau$ could be measured from the energy distribution of the decay products of $\tau$ at future $\epem$ colliders. A measurement of $\ptau$and of the $\st$ production cross section allows to determine both these mixing angles.

20 pages Latex, 5 figures(not included). compressed ps file of the figures available at ftp://ftp.kek.jp/kek/preprints/TH/TH-425/fig.ps.gz

References in corpus (5)

• The Neutralino Relic Density in Minimal N=1 Supergravity
• Evidence for Top Quark Production in $\bar{p}p$ Collisions at $\sqrt{s}=1.8$ TeV
• Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms
• Probing Symmetry-Breaking Pattern Using Sfermion Masses
• Squark and Slepton Mass Relations in Grand Unified Theories

Cited by in corpus (66)

• Physics with e^+e^- Linear Colliders
• Supernatural Supersymmetry: Phenomenological Implications of Anomaly-Mediated Supersymmetry Breaking
• Search for Anomalous Production of Di-lepton Events with Missing Transverse Momentum in e+e- Collisions at sqrt(s) = 183-209 GeV
• Tau Polarization Asymmetry in $B\to X_s{\tau }^{+}{\tau }^{-}$
• Tau longitudinal polarization in B -> D tau nu and its role in the search for charged Higgs boson
• Confronting the Minimal Supersymmetric Standard Model with the Study of Scalar Leptons at Future Linear e+e- Colliders
• Collider Phenomenology for Supersymmetry at Large $tan\beta$
• TESTING SUPERSYMMETRY AT THE NEXT LINEAR COLLIDER
• Scrutinizing LSP Dark Matter at the LHC
• Polarisation in Sfermion Decays: Determining \tanβand Trilinear Couplings
• Lepton-Flavor Violation in the Left-handed Slepton Production at Future Lepton Colliders
• From the LHC to Future Colliders
• TauDecay: a library to simulate polarized tau decays via FeynRules and MadGraph5
• CP Phases in Correlated Production and Decay of Neutralinos in the Minimal Supersymmetric Standard Model
• Possible studies at the first stage of the NICA collider operation with polarized and unpolarized proton and deuteron beams
• Supersymmetry Studies at Future Linear $e^{+}{e}^{-}$ Colliders
• SUSY-GUTs, SUSY-Seesaw and the Neutralino Dark Matter
• Fermion polarization in sfermion decays as a probe of CP phases in the MSSM
• Top Squarks and Bottom Squarks in the MSSM with Complex Parameters
• Tau-Sleptons and Tau-Sneutrino in the MSSM with Complex Parameters
• Discrimination of models including doubly charged scalar bosons by using tau lepton decay distributions
• Analysis of CP Violation in Neutralino Decays to Tau Sleptons
• Impact of CP phases on stop and sbottom searches
• Role of polarization in probing anomalous gauge interactions of the Higgs boson
• T-odd Correlations in the Decay of Scalar Fermions
• Slepton Production as a Probe of the Squark Mass Scale
• $\tau$ Polarization in SUSY Cascade Decays
• Determining $\tan \beta$ with Neutral and Charged Higgs Bosons at a Future $e^{+}{e}^{-}$ Linear Collider
• Polarized Charginos (and Tops) in Stop Decays
• Neutralino Decays at the CERN LHC
• Using Tau Polarization to probe the Stau Co-annihilation Region of mSUGRA Model at LHC
• Prospects for the study of the \stau-system in SPS1a' at the ILC
• Supersymmetry in Elementary Particle Physics
• Using Tau Polarization to Discriminate between SUSY Models and Determine SUSY Parameters at ILC
• Probing CP-violating Higgs contributions in gamma-gamma -> f anti-f through fermion polarization
• Reconstructing Supersymmetric Contribution to Muon Anomalous Magnetic Dipole Moment at ILC
• CP Violation in Tau Slepton Pair Production at Muon Colliders
• Detecting Physics At The Post-GUT And String Scales By Linear Colliders
• Top-Squark Study at a Future e^+e^- Linear Collider
• Impact of bosonic decays on the search for stau_2 and tau-sneutrino
• Direct and Indirect Detection and LHC Signals of Bino-Higgsino Dark Matter
• Hunting for Scalar Lepton Partners at Future Electron Colliders
• Using Tau Polarization as a Distinctive SUGRA Signature at LHC
• Determining tan(beta) in ττFusion to SUSY Higgs Bosons at a Photon Collider
• Probing Supersymmetry With Third-Generation Cascade Decays
• Polarization of top produced in particle decays in an arbitrary frame
• Lepton flavor violation at linear collider experiments in supersymmetric grand unified theories
• Neutralino relic density from ILC measurements in the CPV MSSM
• Using Tau Polarization for Charged Higgs Boson and SUSY Searches at LHC
• Measuring tau-polarisation in Neutralino2 decays at the LHC
• Using Tau Polarization to Sharpen up the SUGRA Signal at Tevatron
• Summary of the Activities of the Working Group I on High Energy and Collider Physics
• Tau polarization measurements at the LHC in supersymmetric models with a long-lived stau
• Polarization of a vector boson produced in decay of a heavy fermion in an arbitrary frame
• Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw
• Supersymmetry Parameter Analysis
• Higgs boson interference in mu^+ mu^- ->chargino_i chargino_j with longitudinally polarized beams
• Signatures of supersymmetry with non-universal Higgs mass at the Large Hadron Collider
• Correlated decays of pair-produced scalar taus
• Interference of Higgs boson resonances in mu^+ mu^- -> neutralino_i neutralino_j with longitudinal beam polarization
• Tau reconstruction methods at an electron-positron collider in the search for new physics
• Direct and Indirect Detection of Neutralino Dark Matter and Collider Signatures in an $SO(10)$ Model with Two Intermediate Scales
• Slepton Flavor Physics at Linear Colliders
• The interplay between the charged Higgs and squark-gluino events at the LHC
• Impact of CP phases on SUSY particle production and decays
• Pair Production of Tau Sneutrinos at Linear Colliders