Observation of a New Charmed - Strange Meson

Using the ARGUS detector at the DORIS II e + e − storage ring at DESY, we have obtained evidence for a new charmed-strange meson which decays into D *+ K 0 . Its mass is observed to be 2535.9±0.6±2.0 MeV/ c 2 and its width to be less than 4.6 MeV/ c 2 at the 90% confidence level. No structure is observed at this mass in the D + K 0 invariant mass spectrum, which suggests that an unnatural spin-parity is preferred.

talk
electron positron: annihilation
annihilation: electron positron
D/s1(2536): electroproduction
electroproduction: D/s1(2536)
D/s1(2536): width
D/s1(2536): cascade decay
cascade decay: D/s1(2536)
mass spectrum
fragmentation function

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Figures(0)

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