Power corrections in e+ e- --> pi+ pi-, K+ K- and B --> K pi, pi pi

Murugeswaran Duraisamy, Alexander L. Kagan

CLEO-c measurements of the timelike form factors F_pi, F_K at \sqrt{s}=3.671 GeV provide a direct probe of power corrections (PC's) at energies near m_B. PC's in F_pi, F_K and B \t…