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arXiv · hep-ex/0310043

Measurement of the Mass Difference m(D_s^+) - m(D^+) at CDF II

The CDF II Collaboration
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Abstract

We present a measurement of the mass difference m(D+_s) - m(D+), where both the D+_s and D+ are reconstructed in the phi pi+ 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: 99.41 +- 0.38 (stat) +- 0.21 (syst) MeV/c^2.

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The CDF II Collaboration. 2003-10-20. Measurement of the Mass Difference m(D_s^+) - m(D^+) at CDF II. https://doi.org/10.1103/physrevd.68.072004

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