Research Papers in Physics and Astronomy


Date of this Version



Published by American Physical Society. Phys. Rev. D 73, 051104 (2006). Copyright © 2006 American Physical Society. Permission to use.


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.

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