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Sökning: WFRF:(Angelopoulos E.) > (2000-2004)

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1.
  • Angelopoulos, Angelos, et al. (författare)
  • K0⇋ KÌ„0 transitions monitored by strong interactions : a new determination of the K L–K S mass difference
  • 2001
  • Ingår i: Physics Letters B. - Elsevier. - 0370-2693. ; 503:1, s. 49-57
  • Tidskriftsartikel (refereegranskat)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. (författare)
  • Physics at CPLEAR
  • 2003
  • Ingår i: Physics Reports. - Elsevier. ; 374:3, s. 165-270
  • Tidskriftsartikel (refereegranskat)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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