The CP-violating asymmetry in K_L -> pi+ pi- e+ e-

Details The CP-violating asymmetry in K_L -> pi+ pi- e+ e- The CP-violating asymmetry in K_L -> pi+ pi- e+ e-

2001-01-10

arxiv.org/abs/hep-ph/0101097v1

Phys.Lett. B507 (2001) 193-199

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

10.1016/S0370-2693(01)00373-2

We update the theoretical analysis of the CP-violating asymmetry in the decay K_L -> pi+ pi- e+ e-, relying on chiral perturbation theory and on the most recent phenomenological information. With the experimentally determined magnetic amplitude and branching ratio as input, the asymmetry can be calculated with good accuracy. The theoretical interpretation of the sign of the asymmetry is discussed.

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