CPT- and B-Violation: The p-pbar Sector

Details CPT- and B-Violation: The p-pbar Sector CPT- and B-Violation: The p-pbar Sector

1999-01-05

arxiv.org/abs/hep-ph/9901217v7

Modern Physics Letters A14(13) (1999) 849

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, LaTeX, .sty file included; based on contribution to CPT98 Conference; minor changes, accepted by Mod. Phys. Lett. A

Scientific paper

10.1142/S0217732399000894

The CPT symmetry of relativistic quantum field theory requires the total lifetimes of particles and antiparticles be equal. Detection of pbar lifetime shorter than tau_p > O(10^32) yr would signal breakdown of CPT invariance, in combination with B-violation. The best current limit on tau_pbar, inferred from cosmic ray measurements, is about one Myr, placing lower limits on CPT-violating scales that depend on the exact mechanism. Paths to CPT breakdown within and outside ordinary quantum mechanics are sketched. Many of the limiting CPT-violating scales in pbar decay lie within the weak-to-Planck range.

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