CP Violation in Charmed Particle Decays
Jul, 197521 pages
Published in:
- Phys.Rev.D 12 (1975) 2744-2750,
- Phys.Rev.D 16 (1977) 2390 (erratum)
Report number:
- Print-75-0604 (BROOKHAVEN)
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Abstract: (APS)
The discovery of hadrons bearing new quantum numbers ("charm," collectively) would open up new possibilities to pursue the issue of CP violation. The matter of CP signatures for charm-changing processes is discussed in general, model-independent terms save for the assumption that ΔCΔQ=1 in semileptonic channels. We note certain qualitative differences in the analysis, as compared to charm-conserving reactions. We then raise the issue of indirect effects of CP violation in charm-changing interactions on the neutral K-meson system. In particular an example is discussed in which CP symmetry breakdown is located in the charm-changing interactions and in which the present CP evidence for charm-conserving decays is qualitatively accommodated. The operational distinctions between this mechanism and another interesting possibility, the presence of a "second" superweak interaction (one with |ΔC|=2), turn out to be delicately linked to CP tests for exclusive decay processes.- CHARMED PARTICLE: DECAY
- DECAY: CHARMED PARTICLE
- CP: violation
- SYMMETRY: BROKEN
- DECAY: WEAK INTERACTION
- ANTI-K0 K0
- SELECTION RULE: CHARM
- SELECTION RULE: STRANGENESS
- INVARIANCE: CPT
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