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Observation of new states decaying into Λc+K-π+ and Λc+KS0π

  • R. Chistov
  • , K. Abe
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , D. Anipko
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , A. Bay
  • , I. Bedny
  • , K. Belous
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • J. Brodzicka, T. E. Browder, M. C. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorišek, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, H. O. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, G. Leder, J. Lee, T. Lesiak, S. W. Lin, D. Liventsev, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Nagamine, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, T. Schietinger, O. Schneider, A. J. Schwartz, R. Seidl, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, S. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, Y. Watanabe, E. Won, C. H. Wu, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, Z. P. Zhang
  • Institute for Theoretical and Experimental Physics
  • High Energy Accelerator Research Organization (KEK)
  • Tohoku Gakuin University
  • University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • University of Sydney
  • University of Melbourne
  • ENAC-IIC-GEL
  • Kurchatov Institute
  • Department of Biochemistry and Molecular and Structural Biology
  • National Central University
  • Institute for Nuclear Physics
  • University of Maribor
  • University of Hawaii
  • Tohoku University
  • National Taiwan University
  • Chonnam National University
  • Sungkyunkwan University
  • Princeton University
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • Tata Institute of Fundamental Research, Mumbai
  • University of Ljubljana
  • Korea University
  • Osaka University
  • Nagoya University
  • Nara Women's University
  • Yonsei University
  • Chiba University
  • Niigata University
  • Tokyo Institute of Technology
  • Kyungpook National University
  • Panjab University
  • Institut für Hochenergiephysik
  • Seoul National University
  • Tokyo Metropolitan University
  • Osaka City University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Toyama National College of Maritime Technology
  • University of Illinois at Urbana-Champaign
  • Riken BNL Research Center
  • University of Nova Gorica
  • University of Tsukuba
  • Saga University
  • Tsinghua University
  • National United University Taiwan
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Nippon Dental University
  • University of Science and Technology of China

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We report the first observation of two charmed strange baryons that decay into Λc+K-π+. The broader of the two states is measured to have a mass of 2978.5±2.1±2.0MeV/c2 and a width of 43.5±7.5±7. 0MeV/c2. The mass and width of the narrow state are measured to be 3076.7±0.9±0.5MeV/c2 and 6.2±1.2±0.8MeV/c2, respectively. We also perform a search for the isospin partner states that decay into Λc+KS0π- and observe a significant signal at the mass of 3082.8±1.8±1.5MeV/c2. The data used for this analysis were accumulated at or near the Υ(4S) resonance, using the Belle detector at the e+e- asymmetric-energy collider KEKB. The integrated luminosity of the data sample used is 461.5fb-1.

langue originaleAnglais
Numéro d'article162001
journalPhysical Review Letters
Volume97
Numéro de publication16
Les DOIs
étatPublié - 25 oct. 2006
Modification externeOui

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