Zach Huard (U. Cincinnati)

Precise Measurements of the  D*+ Natural Line Width and the D*+-D0 Mass Difference

This talk presents precision measurements of the D^* (2010)^+ natural line width and the D^* (2010)^+-D^0 mass difference using D^* (2010)^+→D^0 π^+ decays. The D0 is reconstructed in the decay modes D^0→K^- π^+ and D^0→K^- π^+ π^- π^+. The data were recorded with the Babar detector and correspond to an integrated luminosity of approximately 477/fb.  The combined measurements yield Γ=(83.3±1.3±1.4) keV and Δm=(145425.8±0.5±1.6) keV. These measurements are factors of 10 and 6, respectively, more precise than the world average.

Oct 30 at 4pm in Geo/Phys Room 407