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Measurement of masses of the Xi(c)(2645) and Xi(c)(2815) baryons and observation of Xi(c)(2980)->Xi(c)(2645)pi
- Authors
- Lesiak, T.; Adachi, I.; Aihara, H.; Arinstein, K.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bedny, I.; Belous, K.; Bhardwaj, V.; Bitenc, U.; Blyth, S.; Bozek, A.; Bracko, M.; Brodzicka, J.; Browder, T. E.; Chao, Y.; Chen, A.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Cho, I. -S.; Choi, S. -K.; Choi, Y.; Dalseno, J.; Dash, M.; Eidelman, S.; Gabyshev, N.; Golob, B.; Ha, H.; Haba, J.; Hayasaka, K.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Joshi, N. J.; Kah, D. H.; Kaji, H.; Kang, J. H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, S. K.; Kim, Y. J.; Korpar, S.; Krizan, P.; Krokovny, P.; Kuo, C. C.; Kwon, Y. -J.; Lange, S.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Li, J.; Lin, S. -W.; Liu, C.; Liventsev, D.; Mandl, F.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Nagasaka, Y.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlova, G.; Palka, H.; Park, C. W.; Park, H. K.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shiu, J. -G.; Shwartz, B.; Sokolov, A.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Tsuboyama, T.; Uehara, S.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. C.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamamoto, H.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.; Zyukova, O.
- Issue Date
- 3-7월-2008
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- PHYSICS LETTERS B, v.665, no.1, pp.9 - 15
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS LETTERS B
- Volume
- 665
- Number
- 1
- Start Page
- 9
- End Page
- 15
- ISSN
- 0370-2693
- Abstract
- We report a precise measurement of the masses of the Xi(c)(2645) and Xi(c)(2815) baryons using a data sample of 414 fb(-1) collected by the Belle Collaboration at the KEKB e(+)e(-) collider. The states Xi(c)(2645)(0,+) are observed in the Xi(+.0)(c)pi(-.+) decay modes, while the Xi(c)(2815)(0.+) are reconstructed in the Xi(c)(2645)(+.0)pi(-.+) decay modes. The following mass splittings are determined: m(Xi c(2645)+) - m(Xi c(2645)0) = (-0.1 +/- 0.3(stat) +/- 0.6(syst)) MeV/c(2) and m(Xi c(2815)+) - m(Xi c(2815)0) (-3.4 +/- 1.9(stat) +/- 0.9(syst)) MeV/c(2) with a much better precision than the current world averages. We also observe a new decay mode, Xi(c)(2980)(0.+) -> Xi(c)(2645)(+.0)pi(-.+). (C) 2008 Elsevier B.V. All rights reserved.
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