Precision Tests of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>T</mml:mi></mml:math>Invariance in Electromagnetic Transitions

Henley, Ernest M.; Jacobsohn, Boris A.

doi:10.1103/physrevlett.16.706

Cited by 23 publications

(8 citation statements)

References 11 publications

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“…However, this does neither imply time-reversal noninvariance nor CP violation if CP T is assumed. When loop corrections are included, T -odd correlations can arise either from absorptive parts in the amplitude (so-called final state interactions [8]), or from CP violation. The former effect is a consequence of the unitarity of the S-matrix, and it can be eliminated either by taking the difference between the process we are interested in and its CP conjugate [9] or by direct estimates.…”

Section: Introductionmentioning

confidence: 99%

CP-violating asymmetries in top-quark production and decay in e+e− annihilation within the MSSM

1996

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We obtain analytic formulae for the cross section of the sequential processes of e + e − → tt and t → bl + ν /t →bl −ν in the laboratory frame, where the dependence on triple product correlations of the type (q 1 ×q 2 ·q 3 ), induced by CP violation both in the production and the decay are explicitely shown. Different observables sensitive to CP violation are defined and calculated in the Minimal Supersymmetric Standard Model (MSSM). The observables sensitive to CP violation are of the order of 10 −3 . The dependence on the masses of the supersymmetric particles is also shown.

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Section: Introductionmentioning

confidence: 99%

CP-violating asymmetries in top-quark production and decay in e+e− annihilation within the MSSM

1996

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“…A nonzero difference would imply that nonvanishing asymmetry terms are actually present and that T invariance is violated. We find a difference, Ae= (0.4±3.2)X10- 4 , and conclude that no evidence for time-reversal violation is present. The standard deviation in the experimental value of the asymmetry difference can be translated into an error in the determination of the phase 77.…”

mentioning

confidence: 54%

“…(Deviations due to non-Hermiticity have been estimated to be extremely small. 4 ) Relevant experiments were first proposed by Lee and Yang 5 ; the theory was later worked out in more detail. [6][7][8] Actual experiments have been performed with $77 cascades, 9,10 with 7-7 cascades from oriented nuclei, 11 and with Mossbauer techniques.…”

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confidence: 99%

Beta-Gamma-Gamma Correlation inMn56: A Test of Time-Reversal Invariance

et al. 1969

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A test of time-reversal invariance was performed by measuring the imaginary part | 8 | sin?; of the mixing ratio 8 = | 8 | e ir > between E2 and Ml reduced matrix elements through the observation of two jS-7-7 cascades in 66 Mn. The imaginary part was found to be ( -8.1±4.8) X10" 3 for the 1.81-MeV transition, and ( -7.1± 3.7)X10~3 for the 2.12-MeV transition. In order to eliminate instrumental asymmetries, the difference between the two values was taken, A(| 8 | sim?) = (1±6) X10" 3 . With an average mixing ratio for the two transitions, (\ 8 | ) = 0.23, the difference in phases is A sin?? -Arj^ (0.4±2.6) X10" 2 , giving no evidence for time-reversal violation.

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“…The expressions for σ ± 0 and A ± SM are given by (24) and (19). For the functions C i we obtain 2 :…”

Section: Cp Violating Asymmetriesmentioning

confidence: 99%

CP VIOLATING ASYMMETRIES OF b QUARKS AND LEPTONS IN $e^+ e^-\to t\bar t$ AND SUPERSYMMETRY

Christova

1999

Int. J. Mod. Phys. A

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The distributions of the single decay b-quarks and leptons from e + e − → tt assuming CP violation are reviewed. Different asymmetries, sensitive independently to CP violation in the production and in the decay, and sensitive to the real and imaginary parts of d γ and d Z are defined. The analytic expressions are general and independent on the model of CP violation. In most of them all phase space integrations are fulfilled analytically. Numerical results in the MSSM with complex couplings are presented. * Permanent address. 1 Int. J. Mod. Phys. A 1999.14:1-23. Downloaded from www.worldscientific.com by UNIVERSITY OF CALIFORNIA @ DAVIS on 02/04/15. For personal use only.

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Precision Tests ofTInvariance in Electromagnetic Transitions

Cited by 23 publications

References 11 publications

CP-violating asymmetries in top-quark production and decay in e+e− annihilation within the MSSM

CP-violating asymmetries in top-quark production and decay in e+e− annihilation within the MSSM

Beta-Gamma-Gamma Correlation inMn56: A Test of Time-Reversal Invariance

CP VIOLATING ASYMMETRIES OF b QUARKS AND LEPTONS IN $e^+ e^-\to t\bar t$ AND SUPERSYMMETRY

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