July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Precise measurements of the mass differences between the $D^*(2010)^+$, and the $D^+$ and $D^0$ mesons with the BaBar detector

Aug 1, 2017, 2:39 PM
Curia II (Fermi National Accelerator Laboratory)

Curia II

Fermi National Accelerator Laboratory

Presentation QCD QCD


Prof. Michael Sokoloff (University of Cincinnati)


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)


Presentation materials