Search for doubly charmed baryons and study of charmed strange baryons at Belle

Y. Kato, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, Y. Ban, V. Bhardwaj, B. Bhuyan, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. CheonK. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. DoleŽal, Z. Drásal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, K. Inami, A. Ishikawa, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Krokovny, T. Kuhr, A. Kuzmin, Y. J. Kwon, S. H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, M. Nayak, E. Nedelkovska, C. Ng, M. Niiyama, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, Y. S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We search for doubly charmed baryons Ξcc+(+) with the Λc+K-π+(π+) and Ξc0π+(π+) final states. No significant signal is observed. We also search for two excited charmed strange baryons, Ξc(3055)+ and Ξc(3123)+ with the Σc++(2455)K- and Σc++(2520)K- final states. The Ξc(3055)+ signal is observed with a significance of 6.6 standard deviations including systematic uncertainty, while no signature of the Ξc(3123)+ is seen. We also study properties of the Ξc(2645)+ and measure a width of 2.6±0.2(stat)±0.4(syst)MeV/c2, which is the first significant determination.

Original languageEnglish
Article number052003
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Issue number5
DOIs
Publication statusPublished - 2014 Mar 17

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Kato, Y., Iijima, T., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Bakich, A. M., Bala, A., Ban, Y., Bhardwaj, V., Bhuyan, B., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., ... Zupanc, A. (2014). Search for doubly charmed baryons and study of charmed strange baryons at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(5), [052003]. https://doi.org/10.1103/PhysRevD.89.052003