T-odd correlations in radiative K_l3^+ decays and chiral perturbation theory

Details T-odd correlations in radiative K_l3^+ decays and chiral perturbation theory T-odd correlations in radiative K_l3^+ decays and chiral perturbation theory

2006-07-13

arxiv.org/abs/hep-ph/0607151v2

Eur.Phys.J.C48:427-440,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 11 figures; version published in EPJC

Scientific paper

10.1140/epjc/s10052-006-0033-5

The charged kaon decay channel K_l3gamma^+ allows for studies of direct CP violation, possibly due to non-standard mechanisms, with the help of T-odd correlation variables. In order to be able to extract a CP-violating signal from experiment, it is necessary to understand all possible standard model phases that also produce T-odd asymmetries. We complement earlier studies by considering strong interaction phases in hadronic structure functions that appear at higher orders in chiral perturbation theory, and compare our findings to other potential sources of asymmetries.

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