Measurement of the branching fraction for D$^{+}$ --> K$^{-}\pi^{+}\pi^{+}$

Abstract

Using the CLEO-II detector at CESR we have measured the ratio of branching fractions, {\cal B}(D^+\rightarrow K^- \pi^+ \pi^+)/{\cal B}(D^0 \rightarrow K^-\pi^+) = 2.35 \pm 0.16 \pm 0.16. Our recent measurement of {\cal B}(D^0 \rightarrow K^-\pi^+) then gives {\cal B}(D^+\rightarrow K^- \pi^+ \pi^+) = (9.3 \pm 0.6 \pm 0.8)\%. hardcopies with figures can be obtained by writing to to: Pam Morehouse preprint secretary Newman Lab Cornell University Ithaca, NY 14853 or by sending mail to: [email protected] A postscript version is available through World-Wide-Web