Search for doubly charmed baryons and study of charmed strange baryons at Belle

Date Issued
17-03-2014
Author(s)
Kato, Y.
Iijima, T.
Adachi, I.
Aihara, H.
Asner, D. M.
Aushev, T.
Bakich, A. M.
Bala, A.
Ban, Y.
Bhardwaj, V.
Bhuyan, B.
Bobrov, A.
Bonvicini, G.
Bozek, A.
BraÄ ko, M.
Browder, T. E.
ÄŒervenkov, D.
Chekelian, V.
Chen, A.
Cheon, B. G.
Chilikin, K.
Chistov, R.
Cho, K.
Chobanova, V.
Choi, Y.
Cinabro, D.
Dalseno, J.
Danilov, M.
DoleŽal, Z.
Drásal, Z.
Drutskoy, A.
Dutta, D.
Dutta, K.
Eidelman, S.
Farhat, H.
Fast, J. E.
Ferber, T.
Gaur, V.
Gabyshev, N.
Ganguly, S.
Garmash, A.
Gillard, R.
Goh, Y. M.
Golob, B.
Haba, J.
Hayasaka, K.
Hayashii, H.
He, X. H.
Horii, Y.
Hoshi, Y.
Hou, W. S.
Hsiung, Y. B.
Inami, K.
Ishikawa, A.
Iwasaki, Y.
Iwashita, T.
Jaegle, I.
Julius, T.
Kang, J. H.
Kato, E.
Kawasaki, T.
Kiesling, C.
Kim, D. Y.
Kim, H. J.
Kim, J. B.
Kim, J. H.
Kim, M. J.
Kim, Y. J.
Klucar, J.
Ko, B. R.
Kodyš, P.
Korpar, S.
Krokovny, P.
Kuhr, T.
Kuzmin, A.
Kwon, Y. J.
Lee, S. H.
Li, J.
Li, Y.
Li Gioi, L.
Indian Institute of Technology, Madras
Liu, Y.
Liventsev, D.
Matvienko, D.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Moll, A.
Muramatsu, N.
Mussa, R.
Nagasaka, Y.
Nakano, E.
Nakao, M.
Nakazawa, H.
Nayak, M.
Nedelkovska, E.
Ng, C.
Niiyama, M.
Nisar, N. K.
Nishida, S.
DOI
Abstract
We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We search for doubly charmed baryons Ξcc+(+) with the Λc+K-π+(π+) and Ξc0π+(π+) final states. No significant signal is observed. We also search for two excited charmed strange baryons, Ξc(3055)+ and Ξc(3123)+ with the Σc++(2455)K- and Σc++(2520)K- final states. The Ξc(3055)+ signal is observed with a significance of 6.6 standard deviations including systematic uncertainty, while no signature of the Ξc(3123)+ is seen. We also study properties of the Ξc(2645)+ and measure a width of 2.6±0.2(stat)±0.4(syst)MeV/c2, which is the first significant determination. © 2014 American Physical Society.
Volume
89