Lifetime Differences in Heavy Mesons With Time Independent Measurements

Details Lifetime Differences in Heavy Mesons With Time Independent Measurements Lifetime Differences in Heavy Mesons With Time Independent Measurements

2002-07-13

arxiv.org/abs/hep-ph/0207165v2

Phys.Rev. D71 (2005) 054032

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 0 figures; 2 references added, results unchanged

Scientific paper

10.1103/PhysRevD.71.054032

Heavy meson pairs produced in the decays of heavy quarkonium resonances at e+ e- machines (beauty and tau-charm factories) have the useful property that the two mesons are in the CP-correlated states. By tagging one of the mesons as a CP eigenstate, a lifetime difference of heavy neutral meson mass eigenstates width difference may be determined by measuring the leptonic branching ratio of the other meson. We discuss the use of this and related methods both in the case where time dependent mixing is small and when it is significant. We consider the impact of possible CP-violating effects and present the complete results for CP-entangled decay rates with CP-violation taken into account.

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