Evidence of New States Decaying into Ξc*π

J. P. Alexander et al. (CLEO Collaboration)
Phys. Rev. Lett. 83, 3390 – Published 25 October 1999
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Abstract

Using data recorded by the CLEO II detector at the Cornell Electron Storage Ring, we report evidence for two new charmed baryons, one decaying into Ξc+π+π via an intermediate Ξc*0 and its isospin partner decaying into Ξc0π+π via an intermediate Ξc*+. We measure the mass differences of the two states to be M(Ξc+π+π)M(Ξc+)=348.6±0.6±1.0 MeV, and M(Ξc0π+π)M(Ξc0)=347.2±0.7±2.0 MeV. We interpret these new states as the JP=32 Ξc1 particles, the charmed-strange analogs of the Λc1+(2625).

  • Received 8 June 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.3390

©1999 American Physical Society

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Vol. 83, Iss. 17 — 25 October 1999

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