Alexander L. Kagan

Biography

I joined the Cincinnati High Energy Theory group in 1994.I have been involved in flavor physics since the mid-90's, with an emphasis on the sensitivity of CP violation in rare B decays to extensions of the Standard Model. With the increasing precision of the B factory experiments it became paramount to improve our understanding of the theoretical uncertainties, due to non-perturbative strong interaction effects, which enter the description of rare B decays. This has led me to study the role of power corrections in B decays to light meson pairs. The existing data on meson pair production in e+ e- collisions at nearby energies is used to learn what is the natural size for such effects. Some recent results can be found in Power Corrections in e+ e- -> pi+ pi-, K+ K- and B -> K pi, pi pi.

Research Interest

I am also interested in a class of supersymmetric models which provides an ideal framework for solving the strong CP and supersymmetric weak CP problems via spontaneous CP violation. A preliminary discussion can be found in a talk that I gave at the 2009 Aspen Winter conference on Particle Physics, Strong and Weak CP in R-symmetric Supersymmetry.