Title

Measurements of Ξc+ branching ratios

Document Type

Article

Publication Date

2003

Abstract

Using data collected by the fixed target Fermilab experiment FOCUS, we measure the branching ratios of the Cabibbo-favored decays Ξc+→Σ+K−π+, Ξc+→Σ+K̄∗(892)0, and Ξc+→Λ0K−π+π+ relative to Ξc+→Ξ−π+π+ to be 0.91±0.11±0.04, 0.78±0.16±0.06, and 0.28±0.06±0.06, respectively. We report the first observation of the Cabibbo-suppressed decay Ξc+→Σ+K+K− and we measure the branching ratio relative to Ξc+→Σ+K−π+ to be 0.16±0.06±0.01. We also set 90% confidence level upper limits for Ξc+→Σ+φ and Ξc+→Ξ∗(1690)0(Σ+K−)K+ relative to Ξc+→Σ+K−π+ to be 0.12 and 0.05, respectively. We find an indication of the decays Ξc+→Ω−K+π+ and Ξc+→Σ∗(1385)+K̄0 and set 90% confidence level upper limits for the branching ratios with respect to Ξc+→Ξ−π+π+ to be 0.12 and 1.72, respectively. Finally, we determine the 90% C.L. upper limit for the resonant contribution Ξc+→Ξ∗(1530)0π+ relative to Ξc+→Ξ−π+π+ to be 0.10.

Comments

Published as: Link, J. M., Yager, P. M., Anjos, J. C., Bediaga, I., Göbel, C., Magnin, J., … Sheaff, M. (2003). Measurements of Ξc+ branching ratios. Physics Letters B, 571(3–4), 139–147. https://doi.org/10.1016/S0370-2693(03)00809-8

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