Angular correlations and distributions for searches of CP violation in top quark production and decay

Bernreuther, W.; Nachtmann, Otto; Overmann, P.; Schröder, T.

doi:10.1016/0550-3213(92)90545-m

Cited by 110 publications

(130 citation statements)

References 20 publications

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“…However, for a measurement of a ∼ 0.3% asymmetry, experimental systematics can pose serious limitations. [148,21,149,165,166,167]. Thus one can write the amplitude for t → bW + as the sum 66) where M 0 tbW is the amplitude at the lowest order in the SM which is given by…”

Section: Pra In the Mssmmentioning

confidence: 99%

“…An interesting property of these correlations is that they are not sensitive to CP-violating effects in the t andt decays and, therefore, they can be expressed in terms of only the real part of the EDM and ZEDM form factors, ℜe(d γ,Z t ). The mean values of T ij andÂ 1 plus the conjugate ones are given by [165]:…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

“…The coefficients c γ,Z and r γ,Z depend on the specific decay channel and were calculated as a function of s in [165] for correlations among AB = ℓ + ℓ − , bb and ℓ + b + ℓ −b . Possible CP-odd, T N -even correlations that use the momenta of the decay products of t and t were also examined in [165]:…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

“…Possible CP-odd, T N -even correlations that use the momenta of the decay products of t and t were also examined in [165]:…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

“…6.5 and 6.6. In [165], CP-odd effects in the decay process were neglected when evaluating the two CP-odd, T N -even observables in Eqs. 6.29 and 6.30.…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

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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Section: Pra In the Mssmmentioning

confidence: 99%

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

“…Possible CP-odd, T N -even correlations that use the momenta of the decay products of t and t were also examined in [165]:…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

“…6.5 and 6.6. In [165], CP-odd effects in the decay process were neglected when evaluating the two CP-odd, T N -even observables in Eqs. 6.29 and 6.30.…”

Section: Naive Observables Constructed From Momenta Of the Top Decay mentioning

confidence: 99%

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