6533b7cffe1ef96bd1259b73
RESEARCH PRODUCT
A measurement of the phases of the CP-violating amplitudes in K0→2π decays and a test of CPT invariance
L. BertanzaW. WeihsG. KesselerH.n. NelsonC. CerriI. MannelliI. HarrusR. CarosiH. D. WahlR.l. ChaseA. M. LutzG.m. PierazziniM. KasemannKonrad KleinknechtS. RoehnL. GatignonLydia Iconomidou-fayardR. BlackV. GibsonJ. Van Der LansG. ZechArthur SchafferE. AugéA. BigiJ. MuirD. J. CandlinD. CowardD.c. CundyR. HeinzH.g. SanderR. CasaliB. RenkH. BurkhardtA. NappiH. BlümerP. MayerM. HolderPh. HeussePeter ClarkeG. GarganiG. QuastClemens BeckerKen PeachDaniel FournierH. RohrerN. DobleP. GrafströmR. FantechiB. PanzerP. CalafiuraR. HagelbergM. CalvettiM. Rostsubject
Phase differencePhysicsNuclear physicsNuclear and High Energy PhysicsParticle physicsAntiparticleAmplitudeCPT symmetryCP violationLimit (mathematics)Mass matrixlcsh:Physicslcsh:QC1-999description
Abstract The phases of the CP-violating amplitudes in K0→π+π− and K0→2π0 decays, φ+−=46.9°±2.2° and φ00=47.1°±2.8°, have been measured in the same experiment, and a direct comparison gives the phase difference φ00−φ+−=0.2°±2.9°. This result leads to an upper limit on possible CPT violation in the K0 mass matrix, of |(m K 0 −m K 0 )/m K 0 | −18 at the 95% confidence level and is the most stringent test of the equality of particle and antiparticle masses.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-03-01 | Physics Letters B |