Using data collected by the fixed target Fermilab experiment FOCUS, we measure the branching ratios of the Cabibbofavored decays Ξc + → Σ+K-π+, Ξ c+ → Σ+K̄*(892) 0, and Ξc+ → ∧0K -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 Ξ c+ → 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 Ξ c+ → Ξ-π+π + to be 0.10.

Link, J., Yager, P., Anjos, J., Bediaga, I., Gobel, C., Magnin, J., et al. (2003). Measurements of Ξc+ branching ratios. PHYSICS LETTERS. SECTION B, 571(3-4), 139-147 [10.1016/S0370-2693(03)00809-8].

Measurements of Ξc+ branching ratios

Gianini G;
2003

Abstract

Using data collected by the fixed target Fermilab experiment FOCUS, we measure the branching ratios of the Cabibbofavored decays Ξc + → Σ+K-π+, Ξ c+ → Σ+K̄*(892) 0, and Ξc+ → ∧0K -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 Ξ c+ → 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 Ξ c+ → Ξ-π+π + to be 0.10.
Articolo in rivista - Articolo scientifico
analytic method; article; mathematical model; measurement; prediction; quantum mechanics; reaction analysis
English
2003
571
3-4
139
147
none
Link, J., Yager, P., Anjos, J., Bediaga, I., Gobel, C., Magnin, J., et al. (2003). Measurements of Ξc+ branching ratios. PHYSICS LETTERS. SECTION B, 571(3-4), 139-147 [10.1016/S0370-2693(03)00809-8].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455738
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