Weak properties of the tau lepton via a spin-0 unparticle

Abstract

We consider a spin-0 unparticle and calculate its contribution to the weak properties of a fermion, which in the proper limit reduce to previously reported results for the electromagnetic properties. We then obtain an estimate for the electromagnetic and weak properties of the tau lepton. For the unparticle parameters, we consider the most recent bounds from the lepton flavor violating decay tau -> 3 mu, the muon anomalous magnetic moment, and the data for monojet production plus missing transverse energy at the LHC. In the most promising promising scenario, it is found that the unparticle contributions to the tau electromagnetic properties can be larger than the contributions predicted by the standard model (SM) and some of its extensions, such as the SeeSaw model and extensions of the minimal supersymmetric standard model (MSSM) with a mirror fourth generation and vectorlike multiplets. As for the contributions to the weak properties, they are larger than the SM contributions but are much smaller than the current experimental limits. We also discuss the case of the electromagnetic and weak properties of the bottom and top quarks.

arXiv comment9 pages, 10 figures, 2 tables

References in corpus (35)

• Evidence for oscillation of atmospheric neutrinos
• The BABAR Detector
• Unparticle Physics
• Measurement of the flux and zenith-angle distribution of upward through-going muons by Super-Kamiokande
• Measurement of a small atmospheric ${\nu }_{\mu }/{\nu }_e$ ratio
• Mass and Flavor Mixing Schemes of Quarks and Leptons
• Study of the atmospheric neutrino flux in the multi-GeV energy range
• Lepton Mass Hierarchy and Neutrino Oscillations
• Comments on Unparticles
• Magnetic moments of heavy baryons in the relativistic three-quark model
• Theory of the tau lepton anomalous magnetic moment
• Collider Phenomenology of Unparticle Physics
• Probing Electroweak Top Quark Couplings at Hadron Colliders
• Search for New Physics with a Mono-Jet and Missing Transverse Energy in pp Collisions at sqrt(s) = 7 TeV
• Tau anomalous magnetic moment form factor at Super B/Flavor factories
• Top Dipole Form Factors and Loop-induced CP-violation in Supersymmetry
• The tau weak-magnetic dipole moment
• SUSY Unparticle and Conformal Sequestering
• The contribution of fermionic seesaws to the anomalous magnetic moment of leptons
• Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV
• The Chromoelectric Dipole Moment of the Top Quark in Models with Vector Like Multiplets
• An MSSM Extension with a Mirror Fourth Generation, Neutrino Magnetic Moments and LHC Signatures
• The top quark electric dipole moment in an MSSM extension with vector like multiplets
• Measurement of the Z to tau tau cross section with the ATLAS detector
• Dipole Form Factors and Loop-induced CP-violation in Supersymmetry
• Search for anomalous weak dipole moments of the tau lepton
• Large Tau and Tau Neutrino Electric Dipole Moments in Models with Vector Like Multiplets
• Tau Physics
• Simulation of Z plus Graviton/Unparticle Production at the LHC
• Magnetic Moments of Heavy ${\Xi }_Q$ Baryons in Light Cone QCD Sum Rules
• Muon Anomalous Magnetic Moment and Lepton Flavor Violating Tau Decay in Unparticle Physics
• Constraints on unparticle physics from the $gt\bar{t}$ anomalous coupling
• Lepton electric and magnetic dipole moments via lepton flavor violating spin-1 unparticle interactions
• Bounds On Anomalous Magnetic And Electric Moments Of Tau Lepton From LEP And Lepton Flavor Violation
• Search for the Electric Dipole Moment of the tau lepton

Cited by in corpus (13)

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• Opportunities for new physics searches with heavy ions at colliders
• $\tau \to \mu \gamma$ Decay in Extensions with a Vector Like Generation
• Anomalous magnetic and weak magnetic dipole moments of the $\tau$ lepton in the simplest little Higgs model
• Flavor violation in chromo- and electromagnetic dipole moments induced by $Z^{\prime }$ gauge bosons and a brief revisit of the Standard Model
• Static weak dipole moments of the $\tau$ lepton via renormalizable scalar leptoquark interactions
• Electric dipole moments of charged leptons at one loop in the presence of massive neutrinos
• Research on the electromagnetic and weak dipole moments of the tau-lepton at the Bestest Little Higgs Model
• ${\tau }^{-}\to {\ell }_i^{-}{\ell }_i^{+}{\ell }_j^{-}{\bar{\nu }}_j{\nu }_{\tau }$ decays with a magnetic dipole term
• Dipole moments of charged leptons in the THDM-III with Textures
• Weak dipole moments of the tau lepton in models with an extended scalar sector
• Constraints on Unparticles from $B_s\to {\mu }^{+}{\mu }^{-}$
• Weak dipole moments of heavy fermions with flavor violation induced by $Z^{\prime }$ gauge bosons