Research Papers in Physics and Astronomy
Date of this Version
March 2006
Abstract
We report on precision measurements of the masses and widths of the narrow, orbitally excited states D10 and D2*0 using the CDF II detector at the Fermilab Tevatron. Both states (collectively called D**) are reconstructed in the decay channel D** → D*+ π-. The D2*0 is also reconstructed in the D** → D+ π- channel. Using a data set with an integrated luminosity of 210 pb-1, the measured masses and widths for the D10 are 2421.7 ± 0.7 ± 0.6 MeV/c2 and 20.0 ± 1.7 ± 1:3 MeV/c2 respectively, while for the D2*0 they are 2463.3 ± 0.6 ± 0.8 MeV/c2 and 49.2 ± 2.3 ± 1.2 MeV/c2. These values are currently the single best measurements available.
Comments
Published by American Physical Society. Phys. Rev. D 73, 051104 (2006). http://prd.aps.org. Copyright © 2006 American Physical Society. Permission to use.