Observation of new states decaying into Lambda(c)(+)Kappa(-)pi(+) and Lambda(c)(+)Kappa(0)/(s)pi(-)

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 Bracko; 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 Gorisek; 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 Krizan; 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 Stanic; M Staric; 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; Belle Collaboration

doi:10.1103/PhysRevLett.97.162001

Observation of new states decaying into Lambda(c)(+)Kappa(-)pi(+) and Lambda(c)(+)Kappa(0)/(s)pi(-)

Phys Rev Lett. 2006 Oct 20;97(16):162001. doi: 10.1103/PhysRevLett.97.162001. Epub 2006 Oct 17.

Authors

R Chistov¹, 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 Bracko, 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 Gorisek, 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 Krizan, 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 Stanic, M Staric, 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; Belle Collaboration

Affiliation

¹ Institute for Theoretical and Experimental Physics, Moscow, Russia.

PMID: 17155385
DOI: 10.1103/PhysRevLett.97.162001

Abstract

We report the first observation of two charmed strange baryons that decay into Lambda(c)(+)Kappa(-)pi(+). The broader of the two states is measured to have a mass of 2978.5+/-2.1+/-2.0 MeV/c2 and a width of 43.5+/-7.5+/-7.0 MeV/c2. The mass and width of the narrow state are measured to be 3076.7+/-0.9+/-0.5 MeV/c;{2} and 6.2+/-1.2+/-0.8 MeV/c2, respectively. We also perform a search for the isospin partner states that decay into Lambda(c)(+)Kappa(0)/(s)pi(-) and observe a significant signal at the mass of 3082.8+/-1.8+/-1.5 MeV/c2. The data used for this analysis were accumulated at or near the Upsilon(4S) resonance, using the Belle detector at the e+ e- asymmetric-energy collider KEKB. The integrated luminosity of the data sample used is 461.5 fb(-1).