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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Abstract

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
Volume488
Issue number3-4
DOIs
Publication statusPublished - 2000 Sep 7

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Link, J. M., Paolone, V. S., Reyes, M., Yager, P. M., Anjos, J. C., Bediaga, I., Göbel, C., Magnin, J., de Miranda, J. M., Pepe, I. M., dos Reis, A. C., Simão, F. R. A., Carrillo, S., Casimiro, E., Mendez, H., Sánchez-Hernández, A., Uribe, C., Vazquez, F., Cinquini, L., ... Kwon, Y. J. (2000). Measurements of the Σ(c)/0 and Σ(c)/++ mass splittings. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 488(3-4), 218-224. https://doi.org/10.1016/S0370-2693(00)00867-4