Observation of New States Decaying intoΛc+K−π+andΛc+KS0π−

R Chistov,K Belous,M Iwasaki,S L Olsen,I Tikhomirov,N Soni,G Leder,M Shapkin,K Kinoshita,T Tsuboyama,E Nakano,S Cole,Y Hoshi,T Tsukamoto,S Uno,M Yamauchi,B Golob,I Bedny,S Blyth,Y Teramoto,R Pestotnik,T Nagamine,Z P Zhang,P Krokovny,T Hokuue,Y Usov,A Bay,Y Onuki,M Danilov,W T Chen,A Yamaguchi,M E Sevior,R Mizuk,M Nakao,M Bračko,T Sumiyoshi,T Uglov,V Balagura,S Mconie,W Mitaroff,A J Schwartz,N Gabyshev,H Stoeck,S Hou,B G Cheon,R Seidl,W.-S Hou,S Okuno,K S Park,G Varner,A Garmash,T Lesiak,T Okabe,S Uehara,S Korpar,G Pakhlova,H Shibuya,D Marlow,G R Moloney,Y Watanabe,S Ogawa,M Starič,A Drutskoy,C C Wang,M Hazumi,H J Kim,S Villa,G Gokhroo,T Nozaki,A Chuvikov,G N Taylor,A Kuzmin,T Schietinger,T Iijima,A Chen,M Tanaka,V Aulchenko,K Abe,H Kawai,H Kichimi,S Eidelman,U Bitenc,L E Piilonen,P Pakhlov,K Ueno,T Kawasaki,A M Bakich,J Dalseno,A Bondar,B Shwartz,D Anipko,I Bizjak,M.-C Chang,J B Singh,C H Wang,A Somov,A Sokolov,N Tamura,J Lee,D Epifanov,I Adachi,L M Zhang,H Park,K Hayasaka,D Liventsev,A Imoto,J H Kang,J Dragic,Y Miyazaki,O Nitoh,P Križan,T Ohshima,H Aihara,A Gorišek,A Go,J Haba,N Katayama,Y Yamashita,T Gershon,Y Iwasaki,F Mandl,S Nishida,E Won,H R Khan,K Miyabayashi,H O Kim,S Suzuki,X C Tian,S Stanič,H Miyake,H Miyata,O Schneider,V Sidorov,H Ha,M Dash,K Inami,A Matyja,D Heffernan,H Hayashii,C C Kuo,T E Browder,J Brodzicka,A Ishikawa,H Ozaki,T Aushev,T Matsumoto,F Takasaki,Y Sakai,R Itoh,T Hara,A Bożek ,Y Kwon ,Y Chào ,Ramanuj Kumar ,S W Lin ,Y Hsiung ,M Z Wang ,E L Barberio ,Chung-Yi Wu ,B Yabsley ,H Pałka ,Qingguo Xie ,K F Chen ,Young-Il Choi

doi:10.1103/physrevlett.97.162001

Observation of New States Decaying intoΛc+K−π+andΛc+KS0π−

R Chistov, K Belous + Show 162 more

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https://doi.org/10.1103/physrevlett.97.162001

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Journal: Physical Review Letters	Publication Date: Oct 17, 2006
Citations: 213

Affiliation: The University of Tokyo, Panjab University, Austrian Academy of Sciences, University of Cincinnati, Osaka City University, University of Sydney, Tohoku Gakuin University, University of Ljubljana, Budker Institute of Nuclear Physics, Tohoku University, University of Science and Technology of China, Nagoya University, École Polytechnique Fédérale de Lausanne, Niigata University, University of Melbourne, University of Maribor, Tokyo Metropolitan University, Chonnam National University, University of Illinois Urbana-Champaign, Kanagawa University, Sungkyunkwan University, Princeton University, Polish Academy of Sciences, Toho University, Tokyo Institute of Technology, Tata Institute of Fundamental Research, National Central University, Chiba University, Virginia Tech, National Taiwan University, Kyungpook National University, Nara Women's University, Yonsei University, Tokyo University of Agriculture and Technology, Korea University, Peking University, Osaka University

#Charmed Strange Baryons #Belle Detector + Show 6 more

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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).

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