| 1. |
- Angelopoulos, Angelos, et al.
(author)
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K0⇋ KÌ„0 transitions monitored by strong interactions : a new determination of the K L–K S mass difference
- 2001
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In: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 503:1, s. 49-57
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Journal article (peer-reviewed)abstract
- The CPLEAR set-up (modified) has been used to determine the KL–KS mass difference by a method where neutral-kaon strangeness oscillations are monitored through kaon strong interactions, rather than semileptonic decays, thus requiring no assumptions on CPT invariance for the decay amplitudes. The result, Δm=(0.5343±0.0063stat±0.0025syst)×1010ℏ/s, provides a valuable input for CPT tests.
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| 2. |
- Angelopoulos, Angelos, et al.
(author)
-
Physics at CPLEAR
- 2003
-
In: Physics Reports. - : Elsevier. ; 374:3, s. 165-270
-
Journal article (peer-reviewed)abstract
- LEAR offered unique opportunities to study the symmetries which exist between matter and antimatter. At variance with other approaches at this facility, CPLEAR was an experiment devoted to the study of CP, T and CPT symmetries in the neutral-kaon system. A variety of measurements allowed us to determine with high precision the parameters which describe the time evolution of the neutral kaons and their antiparticles, including decay amplitudes, and the related symmetry properties. Limits concerning quantum-mechanical predictions (EPR, coherence of the wave function) or the equivalence principle of general relativity have been obtained. An account of the main features of the experiment and its performances is given here, together with the results achieved.
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| 3. |
- Apostolakis, A., et al.
(author)
-
Measurement of the energy dependence of the form factor f+ in K 0 e3 decay
- 2000
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In: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 473:1, s. 186-192
-
Journal article (peer-reviewed)abstract
- Neutral-kaon decays to πeν were analysed to determine the q2 dependence of the K0e3 electroweak form factor f+. Based on 365612 events, this form factor was found to have a linear dependence on q2 with a slope λ+=0.0245±0.0012stat±0.0022syst.
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