Research Papers in Physics and Astronomy

 

Date of this Version

October 2003

Comments

Published by American Physical Society. Phys. Rev. D 68, 072004 (2003). http://prd.aps.org. Copyright © 2003 American Physical Society. Permission to use.

Abstract

We present a measurement of the mass difference m(Ds+)– m (D+), where both the Ds+ and D+ are reconstructed in the Φπ+ decay channel. This measurement uses 11.6 pb-1 of data collected by CDF II using the new displaced-track trigger. The mass difference is found to be m(Ds+)–m (D+)=99.41±0.38(stat)±0.21(syst) MeV/c2.

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