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Atwood, David; Soni, Amarjit

doi:10.1103/physrevd.45.2405

Cited by 243 publications

(296 citation statements)

References 7 publications

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“…The optimal-observable method [6] is a useful tool for estimating expected statistical uncertainties in various coupling measurements, which we summarize below.…”

Section: Optimal-observable Methodsmentioning

confidence: 99%

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New-Physics Search through γγ→tt¯→ℓX/bX

Grza̧dkowski¹,

Hioki²,

Ohkuma³

et al. 2006

Nuclear Physics B - Proceedings Supplements

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We probe optimal beam polarizations for new-physics search in top-quark and Higgs-boson sectors at Photon Linear Colliders (PLC). Expressing possible nonstandard effects generated by SU(2) × U(1) gauge-invariant dimension-6 effective operators as anomalous top and Higgs couplings, we estimate expected statistical sensitivities of these couplings in γγ → tt → ℓX/bX, using the optimal-observable method.

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“…The optimal-observable method [6] is a useful tool for estimating expected statistical uncertainties in various coupling measurements, which we summarize below.…”

Section: Optimal-observable Methodsmentioning

confidence: 99%

“…In this section, we briefly explain the effective-Lagrangian approach [5] and optimalobservable method [6] used in our analysis. In addition, polarization parameters of PLC are reviewed.…”

Section: Frameworkmentioning

confidence: 99%

New-Physics Search through γγ→tt¯→ℓX/bX

Grza̧dkowski¹,

Hioki²,

Ohkuma³

et al. 2006

Nuclear Physics B - Proceedings Supplements

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show abstract

“…Clearly, while many observables can be constructed to probe the dipole moment, we may ask whether it is possible to construct an "optimal observable" i.e., one which will be the most sensitive or will have the largest "resolving power". A general procedure for constructing an optimal observable was given in [16]. Here we will briefly review the method.…”

Section: Optimized Observablesmentioning

confidence: 99%

“…It is useful to divide CP-violating observables into two categories (see e.g., [16,22,34,35]), those that are even under "naive" time reversal (T N ) and those that are odd. Recall that T N is defined as a transformation which reverses the momenta and spins of all particles without the interchange of the initial and final states.…”

Section: Cp-violating Observables: Categorizing According To T Nmentioning

confidence: 99%

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CP violation in top physics

et al. 2001

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CP violation in top physics is reviewed. The Standard Model has negligible effects, consequently CP violation searches involving the top quark may constitute the best way to look for physics beyond the Standard Model. Non-standard sources of CP violation due to an extended Higgs sector with and without natural flavor conservation and supersymmetric theories are discussed. Experimental feasibility of detecting CP violation effects in top quark production and decays in high energy e + e − , γγ, µ + µ − , pp and pp colliders are surveyed. Searches for the electric, electro-weak and the chromo-electric dipole moments of the top quark in e + e − → tt and in pp → ttX are descibed. In addition, other mechanisms that appear promising for experiments, e.g., tree-level CP violation in e + e − → tth, ttZ, ttν eνe and in the top decay t → bτ ν τ and CP violation driven by s-channel Higgs exchanges in pp, γγ, µ + µ − → tt etc., are also discussed. * A 2-up version of this postscript file may be obtained at the url

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Probing New Higgs-Top Interactions at the Tree-Level in a Future e + e − Collider

Bar‐Shalom

1999

International Europhysics Conference on High Energy Physics

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The possibility of observing large signatures of new CP-violating and flavor-changing Higgs-Top couplings in a future e + e − collider experiments such as e + e − → t th, t tZ and e + e − → tcν e νe , tce + e − is discussed. Such, beyond the Standard Model, couplings can occur already at the tree-level within a class of Two Higgs Doublets Models. Therefore, an extremely interesting feature of those reactions is that the CP-violating and flavor-changing effects are governed by tree-level dynamics. These reactions may therefore serve as unique avenues for searching for new phenomena associated with Two Higgs Doublets Models and, as is shown here, could yield statistically significant signals of new physics. We find that the CP-asymmetries in e + e − → t th, t tZ can reach tens of percents, and the flavor changing cross-section of e + e − → tcν e νe is typically a few fb's, for light Higgs mass around the electroweak scale.

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Analysis for magnetic moment and electric dipole moment form factors of the top quark viae+e−

Cited by 243 publications

References 7 publications

New-Physics Search through γγ→tt¯→ℓX/bX

New-Physics Search through γγ→tt¯→ℓX/bX

CP violation in top physics

Probing New Higgs-Top Interactions at the Tree-Level in a Future e + e − Collider

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