Phys. Rev. D 50, 1884–1891 (1994)

Precision measurement of the D_s^*+-D_s⁺ mass difference

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D. N. Brown et al.
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Received 27 January 1994; published in the issue dated 1 August 1994

We have measured the vector-pseudoscalar mass splitting M(D_s^*+)-M(D_s⁺)=144.22±0.47±0.37 MeV significantly more precisely than the previous world average. We minimize the systematic errors by also measuring the vector-pseudoscalar mass difference M(D^*0)-M(D⁰) using the radiative decay D^*0→D⁰γ, obtaining [M(D_s^*+)-M(D_s⁺)]-[M(D^*0)-M(D⁰)] =2.09±0.47±0.37 MeV. This is then combined with our previous high-precision measurement of M(D^*0)-M(D⁰), which used the decay D^*0→D⁰π⁰. We also measure the mass difference M(D_s⁺)-M(D⁺)=99.5±0.6±0.3 MeV, using the φπ⁺ decay modes of the D_s⁺ and D⁺ mesons.

URL:

http://link.aps.org/doi/10.1103/PhysRevD.50.1884

DOI:

10.1103/PhysRevD.50.1884

PACS:

13.40.Dk, 13.25.Ft, 14.40.Lb

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Phys. Rev. D 50, 1884–1891 (1994)

Precision measurement of the Ds*+-Ds+ mass difference

Precision measurement of the D_s^*+-D_s⁺ mass difference