Study of higher mass charm baryons decaying to Λ+c

P. L. Frabetti, H. W.K. Cheung, J. P. Cumalat, C. Dallapiccola, J. F. Ginkel, W. E. Johns, M. S. Nehring, J. N. Butler, S. Cihangir, I. Gaines, P. H. Garbincius, L. Garren, S. A. Gourlay, D. J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, S. BiancoF. L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R. W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J. M. Bishop, N. M. Cason, C. J. Kennedy, G. N. Kim, T. F. Lin, D. L. Puseljic, R. C. Ruchti, W. D. Shephard, J. A. Swiatek, Z. Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S. P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A. Lopez, G. P. Grim, V. S. Paolone, P. M. Yager, J. R. Wilson, P. D. Sheldon, F. Davenport, G. R. Blackett, K. Danyo, M. Pisharody, T. Handler, B. G. Cheon, J. S. Kang, K. Y. Kim

Research output: Contribution to journalArticle

Abstract

We report on the study of charm baryons decaying to Λ+c: Λ*+c(2625) → Λ+cπ+π-(2593) → Λ+cπ+π-, Σ0c → Λ+cπ- and Σ++c → Λ+cπ+. We present a confirmation of the state Λ*+c (2593) and determine its mass difference to be M(Λ*+c(2593) ) - M(Λ+c) = 309.2 ± 0.7 ± 0.3 MeV/c2. We determine the lower limit on the resonant branching ratio to be BR(Λ*+c(2593) → Σcπ± (2593) → Λ+cπ+π- ) > 0.51 (90% c.l.). We also measure the mass differences W(Σ0c) - M(Λ+c ) = 166.6 ± 0.5 ± 0.6 MeV/c2 and M(Σ++c) - M(Λ+c) = 167.6 ± 0.6 ± 0.6 MeV/c2. Finally, we measure the relative photoproduction cross sections for Λ*+c and Σc with respect to the (inclusive) photoproduction cross section for Λ+c.

Original languageEnglish (US)
Pages (from-to)461-469
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume365
Issue number1-4
DOIs
StatePublished - Jan 4 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Frabetti, P. L., Cheung, H. W. K., Cumalat, J. P., Dallapiccola, C., Ginkel, J. F., Johns, W. E., Nehring, M. S., Butler, J. N., Cihangir, S., Gaines, I., Garbincius, P. H., Garren, L., Gourlay, S. A., Harding, D. J., Kasper, P., Kreymer, A., Lebrun, P., Shukla, S., Vittone, M., ... Kim, K. Y. (1996). Study of higher mass charm baryons decaying to Λ+c. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 365(1-4), 461-469. https://doi.org/10.1016/0370-2693(95)01458-6