Observation of a Narrow Meson Decaying to Ds pi0 gamma at a Mass of 2.458 GeV/c{sup 2}
- SLAC
A narrow state, which is labeled D{sub sJ}(2458){sup +}, with mass 2458.0 {+-} 1.0 (stat.) {+-} 1.0 (syst.) MeV/c{sup 2}, is observed in the inclusive D{sub s}{sup +} {pi}{sup 0}{gamma} mass distribution in 91 fb{sup -1} of e{sup +}e{sup -} annihilation data recorded by the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. The observed width is consistent with the experimental resolution. The data favor decay through D*{sub s}(2112){sup +} {pi}{sup 0} rather than through D*{sub sJ}(2317){sup +}{gamma}. An analysis of D{sub s}{sup +} {pi}{sup 0} data accounting for the influence of the D{sub sJ}(2458){sup +} produces a D*{sub sJ}(2317){sup +} mass of 2317.3 {+-} 0.4 (stat.) {+-} 0.8 (syst.) MeV/c{sup 2}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 826469
- Report Number(s):
- SLAC-PUB-10215
- Country of Publication:
- United States
- Language:
- English
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