Observation of a narrow charm-strange meson D sJ %2b(2632) → D s %2bη and D 0K %2b Article uri icon

abstract

  • The observation of a charm-strange meson D sJ %2b(2632) along with two decay modes of D %2b %2bη and D 0K %2b, was investigated. A peak with 101 events over a combinatoric background of 54.9 events at a mass of 2635.4∓3.3 MeV/c 2 was observed in the D s %2bη decay mode. In the D 0K %2b decay mode, a corresponding peak of 21 events over a background of 6.9 at 2631.5∓2.0 MeV/c 2 was observed. The results show a clear peak of 43.4∓9.1 events with a Poisson fluctuation probability <6×10 -6 at a mass difference of 666.9∓3.3 MeV/c 2.

authors

publication date

  • 2004-01-01

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