Measurements of Ξc+ branching ratios

J. M. Link, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J. M. de Miranda, I. M. Pepe, E. Polycarpo, A. C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J. P. CumalatB. O'Reilly, I. Segoni, M. Wahl, J. N. Butler, H. W.K. Cheung, G. Chiodini, I. Gaines, P. H. Garbincius, L. A. Garren, E. Gottschalk, P. H. Kasper, A. E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F. L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D. Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y. S. Chung, J. S. Kang, B. R. Ko, J. W. Kwak, K. B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, F. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T. F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D. Lopes Pegna, M. M. Merlo, D. Pantea, S. P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A. M. Lopez, E. Luiggi, H. Mendez, A. Paris, J. Quinones, J. E. Ramirez, Y. Zhang, J. R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W. E. Johns, M. Nehring, P. D. Sheldon, K. Stenson, E. W. Vaandering, M. Webster, M. Sheaff

Research output: Contribution to journalArticlepeer-review

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+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)+0 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.

Original languageEnglish (US)
Pages (from-to)139-147
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume571
Issue number3-4
DOIs
StatePublished - Oct 9 2003
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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