Measurements of the Σ(c)/0 and Σ(c)/++ mass splittings

J. M. Link, V. S. Paolone, M. Reyes, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, J. Magnin, J. M. de Miranda, I. M. Pepe, A. C. dos Reis, F. R.A. Simão, S. Carrillo, E. Casimiro, H. Mendez, A. Sánchez-Hernández, C. Uribe, F. Vazquez, L. Cinquini, J. P. CumalatJ. E. Ramirez, B. O'Reilly, E. W. Vaandering, J. N. Butler, H. W.K. Cheung, I. Gaines, P. H. Garbincius, L. A. Garren, E. Gottschalk, S. A. Gourlay, P. H. Kasper, A. E. Kreymer, R. Kutschke, S. Bianco, F. L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, D. Y. Kim, K. S. Park, A. Rahimi, J. Wiss, R. Gardner, Y. S. Chung, J. S. Kang, B. R. Ko, J. W. Kwak, K. B. Lee, S. S. Myung, H. Park, G. Alimonti, M. Boschini, D. Brambilla, B. Caccianiga, A. Calandrino, P. D'Angelo, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Milazzo, L. Moroni, D. Pedrini, F. Prelz, M. Rovere, A. Sala, S. Sala, T. F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. Merlo, D. Pantea, S. P. Ratti, C. Riccardi, P. Torre, L. Viola, P. Vitulo, H. Hernandez, A. M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J. Quinones, C. Rivera, Y. Zhang, N. Copty, M. Purohit, J. R. Wilson, K. Cho, T. Handler, D. Engh, W. E. Johns, M. Hosack, M. S. Nehring, M. Sales, P. D. Sheldon, K. Stenson, M. S. Webster, M. Sheaff, Y. J. Kwon

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9 Citations (Scopus)


Using a high statistics sample of photoproduced charmed particles from the FOCUS experiment at Fermilab (FNAL-E831), we measure the mass splittings of the charmed baryons Σ(c)/0 and Σ(c)/++. We find M(Σ(c)/0 - Λ(c)/+) = 167.38 ± 0.21 ± 0.13 MeV/c2 and M(Σ(c)/++ - Λ(c)/+) = 167.35 ± 0.19 ± 0.12 MeV/c2 with samples of 362 ± 36 and 461 ± 39 events, respectively. We measure the isospin mass splitting M(Σ(c)/++ - Σ(c)/0) to be -0.03 ± 0.28 ± 0.11 MeV/c2. The first errors are statistical and the second are systematic. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)218-224
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 2000 Sept 7

Bibliographical note

Funding Information:
We wish to acknowledge the assistance of the staffs of Fermi National Accelerator Laboratory, the INFN of Italy, and the physics departments of the collaborating institutions. This research was supported in part by the U.S. National Science Foundation, the U.S. Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero dell'Università e della Ricerca Scientifica e Tecnologica, the Brazilian Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico, CONACyT-México, the Korean Ministry of Education, and the Korean Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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