Mizuk, R; Abe, K; Adachi, I; Aihara, H; Anipko, D; Aulchenko, V; Aushev, T; ... Belle Collaboration; + view all Mizuk, R; Abe, K; Adachi, I; Aihara, H; Anipko, D; Aulchenko, V; Aushev, T; Bakich, AM; Balagura, V; Barberio, E; Bay, A; Bedny, I; Belous, K; Bitenc, U; Bizjak, I; Blyth, S; Bondar, A; Bozek, A; Bracko, M; Brodzicka, J; Browder, TE; Chang, MC; Chen, A; Chen, KF; Chen, WT; Cheon, BG; Chistov, R; Choi, Y; Choi, YK; Cole, S; Dalseno, J; Danilov, M; Drutskoy, A; Eidelman, S; Epifanov, D; Fratina, S; Gabyshev, N; Garmash, A; Gershon, T; Gokhroo, G; Golob, B; Ha, H; Haba, J; Hayasaka, K; Hayashii, H; Hazumi, M; Heffernan, D; Hokuue, T; Hoshi, Y; Hou, S; Hou, WS; Iijima, T; Ikado, K; Imoto, A; Inami, K; Ishikawa, A; Itoh, R; Iwasaki, M; Iwasaki, Y; Kaji, H; Kang, JH; Kapusta, P; Katayama, N; Khan, HR; Kichimi, H; Kim, YJ; Kinoshita, K; Korpar, S; Krizan, P; Krokovny, P; Kulasiri, R; Kumar, R; Kuo, CC; Kuzmin, A; Kwon, YJ; Leder, G; Lee, J; Lee, MJ; Lee, SE; Lesiak, T; Lin, SW; Liventsev, D; Majumder, G; Mandl, F; Matsumoto, T; Matyja, A; McOnie, S; Miyake, H; Miyata, H; Miyazaki, Y; Nakao, M; Natkaniec, Z; Nishida, S; Ogawa, S; Ohshima, T; Okuno, S; Onuki, Y; Ozaki, H; Pakhlov, P; Pakhlova, G; Park, H; Park, KS; Peak, LS; Pestotnik, R; Piilonen, LE; Sakai, Y; Satoyama, N; Schneider, O; Schumann, J; Seidl, R; Senyo, K; Sevior, ME; Shapkin, M; Shibuya, H; Singh, JB; Somov, A; Soni, N; Stanic, S; Staric, M; Stoeck, H; Suzuki, SY; Takasaki, F; Tamai, K; Tanaka, M; Taylor, GN; Teramoto, Y; Tian, XC; Tikhomirov, I; Tsuboyama, T; Tsukamoto, T; Uehara, S; Uglov, T; Ueno, K; Uno, S; Urquijo, P; Usov, Y; Varner, G; Villa, S; Wang, CH; Watanabe, Y; Won, E; Xie, QL; Yabsley, BD; Yamaguchi, A; Yamashita, Y; Yamauchi, M; Yuan, CZ; Zhang, LM; Zhang, ZP; Zhilich, V; Zupanc, A; Belle Collaboration; - view fewer (2007) Experimental constraints on the spin and parity of the Lambda(c)(2880)(+). PHYS REV LETT , 98 (26) , Article 262001. 10.1103/PhysRevLett.98.262001.

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Abstract

We report the results of several studies of the Lambda(+)(c)pi(+)pi X- final state in continuum e(+)e(-) annihilation data collected by the Belle detector. An analysis of angular distributions in Lambda(c)(2880)(+)->Sigma(c)(2455)(0,++)pi(+,-) decays strongly favors a Lambda(c)(2880)(+) spin assignment of 5/ over 3/2 or 1/2. We find evidence for Lambda(c)(2880)(+)->Sigma(c)(2520)(0,++)pi(+,-) decay and measure the ratio of Lambda(c)(2880)(+) partial widths Gamma(Sigma(c)(2520)pi)/Gamma(Sigma(c)(2455)pi)=0.225 +/- 0.062 +/- 0.025. This value favors the Lambda(c)(2880)(+) spin-parity assignment of 5/2(+) over 5/2(-). We also report the first observation of Lambda(c)(2940)(+)->Sigma(c)(2455)(0,++)pi(+,-) decay and measure Lambda(c)(2880)(+) and Lambda(c)(2940)(+) mass and width parameters. These studies are based on a 553 fb(-1) data sample collected at or near the Upsilon(4S) resonance at the KEKB collider.

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