CP violation in e+e- -> t tbar: Energy Asymmetries and Optimal Observables of b and bbar Quarks

Abstract

The energy spectra of the b and bbar quarks in e+e- -> t tbar with t -> b W (tbar -> bbar W) are calculated assuming CP violation in the production process. Expressions for the corresponding CP violating asymmetries and optimal observables that determine the imaginary parts of the electric and weak dipole moment form factors of the top are derived. It is shown that polarization of the initial lepton beams is essential to disentangle Im d^γ(s) and Im d^{Z}(s). Numerical results are given in the Minimal Supersymmetric Standard Model with complex phases.

9 pages LaTeX with 2 eps-figures included; revised version, including optimal observables

References in corpus (4)

• CP Violation In Single Top Production And Decay Via p p-bar -> t b-bar +X -> W^+ b b-bar +X Within The MSSM: A Possible Application For Measuring \arg(A_t) At Hadron Colliders
• CP Violation in the Top-Quark Pair Production at a Next Linear Collider
• CP violating angular asymmetries of b and bbar quarks in e+e- -> t tbar
• On the top-quark polarization and how to measure it

Cited by in corpus (10)

• Probing Top-Quark Couplings at Polarized NLC
• A CP sensitive asymmetry in the three--body decay stop_1 -> b tau+ tau-sneutrino
• Effective Lagrangian for $\bar{q}{\tilde{q}}_i^{\prime }{\chi }_j^{+}$, $\bar{q}{\tilde{q}}_i^{\prime }{\chi }_j^0$ interactions and Fermionic Decays of the Squarks with CP Phases
• Probe of CP Violation in e+e- -> ttbar Near Threshold
• Polarized Single Top Production at Leptonic Colliders from Broken R Parity Interactions Incorporating CP Violation
• CP violation in decays of the lightest supersymmetric particle with bilinearly broken R parity
• Inclusive spin-momentum analysis and new physics at a polarized electron-positron collider
• Decay-lepton angular distributions in e+e- -> t tbar to O(alpha_s) in the soft-gluon approximation
• Energy correlation of bottom quarks from decays of top quarks in electron$-$positron annihilation
• Energy and angular distributions of the bottom quark in the electron-positron annihilation $e^{+}{e}^{-}\to b{W}^{+}\bar{t}$