Models of Low Energy Effective Theory applied to Kaon Non-leptonic Decays and Other Matrix Elements

Details Models of Low Energy Effective Theory applied to Kaon Non-leptonic Decays and Other Matrix Elements Models of Low Energy Effective Theory applied to Kaon Non-leptonic Decays and Other Matrix Elements

1999-10-20

arxiv.org/abs/hep-ph/9910415v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, uses aipproc.cls, to appear in the proceedings of the International Workshop on Hadron Physics `Effective Theories o

Scientific paper

10.1063/1.1303041

In this talk I describe work on computing non-leptonic matrix elements consistently with both long and short distance contributions included. On the simpler example of the $\pi^+$-$\pi^0$ mass difference I explain in detail the matching procedure and the difference between various low-energy models. I then explain the new difficulties in non-leptonic Kaon decays and how the matching here can in principle be done in the same way when scheme dependences are correctly accounted for. In the end I summarize the results J. Prades and I obtain for the $\Delta I=1/2$ rule and $B_6$.

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