0000000000262743
AUTHOR
Elisabetta Pallante
The standard model prediction for epsilon'/epsilon
34 páginas, 1 figura, 1 tabla, 7 tablas adicionales.-- arXiv:hep-ph/0105011v1
Strong enhancement of epsilon '/epsilon through final state interactions
We quantify the important effect of strong final state interactions in the weak $K\to2\pi$ amplitudes, using the measured $\pi$--$\pi$ phase shifts with J=0 and $I=0,2$. The final rescattering of the two pions provides a strong enhancement of the $\Delta I =1/2$ amplitude, which so far has been neglected in the theoretical predictions of $\epsilon'/\epsilon$. This correction increases the Standard Model prediction of $\epsilon'/\epsilon$ to values in good agreement with the experimental measurements.
Strong Enhancement ofɛ′/ɛthrough Final State Interactions
We quantify the important effect of strong final state interactions in the weak $K\ensuremath{\rightarrow}2\ensuremath{\pi}$ amplitudes, using the measured $\ensuremath{\pi}\ensuremath{-}\ensuremath{\pi}$ phase shifts with $J\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$ and $I\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0,2$. The final rescattering of the two pions provides a strong enhancement of the $\ensuremath{\Delta}I\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1/2$ amplitude, which so far has been neglected in the theoretical predictions of ${\ensuremath{\varepsilon}}^{\ensuremath{'}}/\ensuremath{\varepsilon}$. This correction increases the standard model predictio…
Final State Interactions in Kaon Decays
27 páginas, 1 figura, 2 tablas.-- PACS: 13.25.Es; 11.30.Er; 13.85.Fb; 11.55.Fv.-- arXiv:hep-ph/0007208v1
Working group on goldstone boson production and decay
This is the summary of the working group on Goldstone Boson Production and Decay of the Chiral Dynamics Workshop in Mainz, September 1–5, 1997. For the production aspects we discuss π0 and η production in nucleon-nucleon collisions and the behaviour of hadrons in various sum rules. For the decays we present a discussion on various K, η and π decay channels. Other aspects discussed are a new treatment of meson-meson scattering, the light-by-light contribution to the muon anomalous magnetic moment and progress in various aspects of the p 6 generating functional in the mesonic sector.
The role of final state interactions in epsilon'/epsilon
3 páginas.-- Comunicación presentada al DPF 2000: The Meeting Of The Division Of Particles And Fields Of The American Physical Society celbrado en Agosto del 2000 en Ohio (USA).-- arXiv:hep-ph/0010229v1