Cp - Odd Phases @ Nlc : a Project Outline
نویسنده
چکیده
Low-energy results from measurements of leptonic dipole operators are used to derive constraints on phases of the MSSM. After rediscovering older bounds on these phases, we try to investigate the impact of these possibly non-vanishing CP-odd phases on the measurement of CP-even cross-sections at the next lep-tonic collider.
منابع مشابه
CP Conserving and CP Violating Asymmetries in e + e − → t¯tνe¯νe at the NLC: Application to Determining the Higgs Width
The polarization asymmetries of t, t̄ quarks can be used in the reaction ee → tt̄νeν̄e to measure the Higgs width, in the Standard Model or in its extensions, and to search for non-standard CP violating phases. As an application of the CPT theorem the Higgs width is monitored through a CP-even, TN odd, polarization asymmetry, By. CP violation manifests through interference at tree graph level with...
متن کاملCP Violation in the Top-Quark Pair Production at a Next Linear Collider
We provide a detailed, model-independent, study for CP violation effects due to the T -odd top-quark electric dipole moment (EDM) and weak dipole moment (WDM) in the top-quark pair production via e+e− and two-photon annihilation at a next e+e− linear collider (NLC). There are two methods in detecting CP violation effects in these processes. One method makes use of measurements of various spin c...
متن کاملDimension-six CP-violating operators of the third-family quarks and their effects at colliders
We listed all possible dimension-six CP-violating SUc(3)×SUL(2)×UY (1) invariant operators involving the third-family quarks, which can be generated by new physics at a higher energy scale. The expressions of these operators after electroweak symmetry breaking and the induced effective couplings Wtb̄, Xbb̄ and Xtt̄ (X = Z, γ, g,H) are also presented. We have evaluated sample contributions of these...
متن کاملCP Violation in Higgs Decays
We study CP violation in fermion pair decays of Higgs boson. We identify some CP odd observables related to the tree level decay amplitude. We find that a few thousand Higgs boson decay events can already provide important information about CP violation. If the Higgs boson is produced, such an analysis could be carried out at the SSC, LHC and NLC.
متن کاملMixing of the CP Even and the CP Odd Higgs Bosons and the EDM Constraints
The mixing among the CP even and the CP odd neutral Higgs bosons of MSSM by one loop induced effects in the presence of CP phases is investigated using three different mechanisms to satisfy the EDM constraints, i.e., a fine tuning of phases, a heavy sparticle spectrum, and the cancellation mechanism. It is shown that if a mixing effect among the CP even and the CP odd Higgs bosons is observed e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002