1. General Seminars

Precise Measurements of D-Meson Properties

by Michael Sokoloff (University of Cincinnati)

Europe/Rome
Aula Bruno Touschek (LNF INFN)

Aula Bruno Touschek

LNF INFN

Via Enrico Fermi, 40 00044 Frascati
Description
Using an integrated luminosity of 475 fb􀀀1 collected near 10.58 GeV by the BaBar detector, we have measured the natural line width of the D+ meson to be 􀀀 = (83:31:31:4) keV and the D+ 􀀀D0 mass dierence pole position to be m0 = (145 425:80:51:8) keV. The width measurement is about 12 times more precise than the best previous measurement, and the mass dierence a factor of 6. The width measure- ment reinforces the observed non-universality of the strong coupling strength gDD which is expected to be a constant in a chiral quark model. We have also measured the D0 mass to be m(D0) = (1864:841 0:048 0:062) MeV. This result is more than twice as precise as the best published measurement and helps constrain interpretations of the X(3872).
Slides
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×