Speaker
Prof.
Michael Sokoloff
(University of Cincinnati)
Description
We present a high precision measurement of the mass difference between
the $D^*(2010)^+$ and $D^+$ mesons using the decay chain $D^*(2010)^+ \to D^+ \pi^0$, with $D^+ \to K^- \pi^+ \pi^+$ .
The analysis has been performed on a data sample corresponding to an integrated luminosity
of about 477 ${\mathrm{fb}}^{-1}$, collected with the BaBar detector at the PEP-II e+e- collider.
We additionally combine this result with a previous BaBar measurement
of $m(D^*(2010)^+) - m(D^0)$ to extract the mass difference between the charged and neutral $D$ mesons.
We obtain results that are approximately seven times more precise than the present world averages.
Primary author
Prof.
Frank Porter
(Caltech)