Observation of an isotriplet of excited charmed baryons decaying to lambda+c pi

R Mizuk; K Abe; K Abe; H Aihara; M Akatsu; Y Asano; V Aulchenko; T Aushev; A M Bakich; V Balagura; Y Ban; S Banerjee; I Bedny; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; J Brodzicka; T E Browder; Y Chao; A Chen; B G Cheon; R Chistov; S-K Choi; Y Choi; A Chuvikov; S Cole; J Dalseno; M Danilov; M Dash; J Dragic; A Drutskoy; S Eidelman; S Fratina; N Gabyshev; A Garmash; T Gershon; G Gokhroo; J Haba; N C Hastings; K Hayasaka; H Hayashii; M Hazumi; 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; J S Kang; P Kapusta; N Katayama; H Kawai; T Kawasaki; H R Khan; H Kichimi; H J Kim; J H Kim; S K Kim; S M Kim; P Koppenburg; S Korpar; P Krizan; P Krokovny; R Kulasiri; C C Kuo; A Kuzmin; Y-J Kwon; S E Lee; S H Lee; T Lesiak; J Li; S-W Lin; D Liventsev; G Majumder; F Mandl; T Matsumoto; W Mitaroff; H Miyake; H Miyata; D Mohapatra; T Mori; T Nagamine; Y Nagasaka; E Nakano; M Nakao; S Nishida; S Ogawa; T Ohshima; T Okabe; S Okuno; S L Olsen; W Ostrowicz; H Ozaki; P Pakhlov; H Palka; C W Park; H Park; N Parslow; R Pestotnik; L E Piilonen; H Sagawa; Y Sakai; T Schietinger; O Schneider; P Schönmeier; J Schümann; S Semenov; K Senyo; R Seuster; H Shibuya; J B Singh; A Somov; N Soni; R Stamen; S Stanic; M Staric; K Sumisawa; T Sumiyoshi; S Y Suzuki; O Tajima; F Takasaki; N Tamura; M Tanaka; Y Teramoto; X C Tian; S Uehara; T Uglov; K Ueno; S Uno; G Varner; K E Varvell; S Villa; C C Wang; C H Wang; M-Z Wang; B D Yabsley; A Yamaguchi; Y Yamashita; M Yamauchi; Heyoung Yang; J Ying; C C Zhang; J Zhang; L M Zhang; Z P Zhang; V Zhilich; D Zontar; D Zürcher; Belle Collaboration

doi:10.1103/PhysRevLett.94.122002

Observation of an isotriplet of excited charmed baryons decaying to lambda+c pi

Phys Rev Lett. 2005 Apr 1;94(12):122002. doi: 10.1103/PhysRevLett.94.122002. Epub 2005 Apr 1.

Authors

R Mizuk¹, K Abe, K Abe, H Aihara, M Akatsu, Y Asano, V Aulchenko, T Aushev, A M Bakich, V Balagura, Y Ban, S Banerjee, I Bedny, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, T E Browder, Y Chao, A Chen, B G Cheon, R Chistov, S-K Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, A Drutskoy, S Eidelman, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, J Haba, N C Hastings, K Hayasaka, H Hayashii, M Hazumi, 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, J S Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, H R Khan, H Kichimi, H J Kim, J H Kim, S K Kim, S M Kim, P Koppenburg, S Korpar, P Krizan, P Krokovny, R Kulasiri, C C Kuo, A Kuzmin, Y-J Kwon, S E Lee, S H Lee, T Lesiak, J Li, S-W Lin, D Liventsev, G Majumder, F Mandl, T Matsumoto, W Mitaroff, H Miyake, H Miyata, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, E Nakano, M Nakao, S Nishida, S Ogawa, T Ohshima, T Okabe, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, C W Park, H Park, N Parslow, R Pestotnik, L E Piilonen, H Sagawa, Y Sakai, T Schietinger, O Schneider, P Schönmeier, J Schümann, S Semenov, K Senyo, R Seuster, H Shibuya, J B Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Y Suzuki, O Tajima, F Takasaki, N Tamura, M Tanaka, Y Teramoto, X C Tian, S Uehara, T Uglov, K Ueno, S Uno, G Varner, K E Varvell, S Villa, C C Wang, C H Wang, M-Z Wang, B D Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, Heyoung Yang, J Ying, C C Zhang, J Zhang, L M Zhang, Z P Zhang, V Zhilich, D Zontar, D Zürcher; Belle Collaboration

Affiliation

¹ Institute for Theoretical and Experimental Physics, Moscow.

PMID: 15903907
DOI: 10.1103/PhysRevLett.94.122002

Abstract

We report the observation of an isotriplet of excited charmed baryons, decaying into Lambda(+)(c)pi(-), Lambda(+)(c)pi(0), and Lambda(+)(c)pi(+). We measure the mass differences M(Lambda(+)(c)pi)-M(Lambda(+)(c)) and widths to be 515.4(+3.2+2.1)(-3.1-6.0) MeV/c(2), 61(+18+22)(-13-13) MeV for the neutral state; 505.4(+5.8+12.4)(-4.6-2.0) MeV/c(2), 62(+37+52)(-23-38) MeV for the charged state; and 514.5(+3.4+2.8)(-3.1-4.9) MeV/c(2), 75(+18+12)(-13-11) MeV for the doubly charged state, where the uncertainties are statistical and systematic, respectively. These results are obtained from a 281 fb(-1) data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric energy e(+)e(-) collider.