A measurement of the phases of the CP-violating amplitudes in K0→2π decays and a test of CPT invariance

Carosi, R.; Clarke, P. E. L.; Coward, D.; Cundy, D.; Doble, N.; Gatignon, L.; Gibson, V.; Grafström, P.; Hagelberg, R.; Kesseler, G.; Lans, J. van der; Nelson, H. N.; Wahl, H.; Black, R.; Candlin, D. J.; Muir, J.; Peach, Ken; Blümer, H.; Heinz, R.; Kasemann, M.; Kleinknecht, K.; Mayer, Peter; Panzer, B.; Renk, B.; Roehn, S.; Rohrer, H.; Augé, E.; Chase, R. L.; Fournier, D.; Heusse, P.; Iconomidou-Fayard, L.; Harrus, I.; Lutz, A. M.; Schaffer, A.C.; Bertanza, L.; Bigi, A.; Calafiura, P.; Calvetti, M.; Casali, R.; Cerri, C.; Fantechi, R.; Gargani, G.; Mannelli, I.; Nappi, A.; Pierazzini, G.; Becker, Christoph; Burkhardt, H.; Holder, M.; Quast, G.; Rost, M.; Sander, H.G.; Weihs, W.; Zech, G.

doi:10.1016/0370-2693(90)91448-k

Cited by 122 publications

(29 citation statements)

References 31 publications

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“…The K 0 K 0 dilution is assumed to be linearly dependent on energy, as expected from the parton model. It is obtained using data from the NA31 experiment [10], corrected for the different momentum spectrum and production angle [11] and parameterized as a linear function of the energy.…”

Section: Fit To the Datamentioning

confidence: 99%

Search for CP violation in K0→3π0 decays

Lai

Marras

Batley³

et al. 2005

Physics Letters B

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Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay K S → 3π 0 has been performed. From a fit to the lifetime distribution of about 4.9 million reconstructed K 0 /K 0 → 3π 0 decays, the CP violating amplitude η 000 = A(K S → 3π 0 )/A(K L → 3π 0 ) has been found to be Re(η 000 ) = −0.002 ± 0.011 ± 0.015 and Im(η 000 ) = −0.003 ± 0.013 ± 0.017. This corresponds to an upper limit on the branching fraction of Br(K S → 3π 0 ) < 7.4 × 10 −7 at 90% confidence level. The result is used to improve knowledge of Re(ǫ) and the CPT violating quantity Im(δ) via the Bell-Steinberger relation.

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Section: Fit To the Datamentioning

confidence: 99%

Search for CP violation in K0→3π0 decays

Lai

Marras

Batley³

et al. 2005

Physics Letters B

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“…We may recall that CP violation was first observed in the K 0 -K 0 system [2], and is now being actively searched for in the B 0 d -B 0 d system [3]; there are also observations of T violation [4] and tests of CPT invariance [5] in the K 0 -K 0 system, although their interpretation remains controversial [6].…”

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confidence: 99%

Testing CPT invariance by using C-even neutral-meson-antimeson correlated states

Dass

Grimus

Lavoura³

2001

J. High Energy Phys.

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We consider the decays of a correlated neutral-meson-antimeson state with Cparity +1. We show that there is CPT noninvariance in the mixing of the neutral mesons if, for any two decay modes f and g, the decay rate has a component R A which is antisymmetric under the interchange of the decay times t 1 and t 2 . In particular, one may cleanly extract the CPT-noninvariance parameter with the help of R A by using opposite-sign dilepton events.

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“…Local Lorentz invariant quantum field theories imply CP T invariance [5], in accordance with all experimental evidence [6,7]. Hence, it is expected that the CP -violating weak interaction also violates time reversal invariance.…”

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confidence: 57%