Precision Measurement of the $D_s^{*+}- D_s^+$ Mass Difference

Details Precision Measurement of the $D_s^{*+}- D_s^+$ Mass Difference Precision Measurement of the $D_s^{*+}- D_s^+$ Mass Difference

1994-03-22

arxiv.org/abs/hep-ph/9403327v1

Phys.Rev.D50:1884-1891,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages uuencoded compressed postscript (process with uudecode then gunzip). hardcopies with figures can be obtained by sendi

Scientific paper

10.1103/PhysRevD.50.1884

We have measured the vector-pseudoscalar mass splitting $M(D_s^{*+})-M(D_s^+) = 144.22\pm 0.47\pm 0.37 MeV$, significantly more precise than the previous world average. We minimize the systematic errors by also measuring the vector-pseudoscalar mass difference $M(D^{*0})-M(D^0)$ using the radiative decay $D^{*0}\rightarrow D^0\gamma$, obtaining $[M(D_s^{*+})-M(D_s^+)]-[M(D^{*0})-M(D^0)] = 2.09\pm 0.47\pm 0.37 MeV$. This is then combined with our previous high-precision measurement of $M(D^{*0})-M(D^0)$, which used the decay $D^{*0}\rightarrow D^0\pi^0$. We also measure the mass difference $M(D_s^+)-M(D^+)=99.5\pm 0.6\pm 0.3$ MeV, using the $\phi\pi^+$ decay modes of the $D_s^+$ and $D^+$ mesons.

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