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Measurement of branching fractions of Delta(+)(c) -> eta Lambda pi(+), eta Sigma(0)pi(+), Lambda(1670)pi(+), and eta Sigma(1385)(+)

Authors
Lee, J. Y.Tanida, K.Kato, Y.Kim, S. K.Yang, S. B.Adachi, IAhn, J. K.Aihara, H.Al Said, S.Asner, D. M.Aushev, T.Ayad, R.Babu, VBahinipati, S.Behera, P.Beleno, C.Bennett, J.Bessner, M.Bhuyan, B.Bilka, T.Biswal, J.Bonvicini, G.Bozek, A.Browder, T. E.Campajola, M.Cao, L.Chang, M-CChang, P.Chekelian, VChen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, S-KChoi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.De Nardo, G.Di Capua, F.Dolezal, Z.Dong, T., VEidelman, S.Epifanov, D.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGarmash, A.Giri, A.Goldenzweig, P.Golob, B.Hadjivasiliou, C.Hartbrich, O.Hayasaka, K.Hayashii, H.Hedges, M. T.Villanueva, M. HernandezHsu, C-LInami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Jacobs, W. W.Jang, E-JJia, S.Jin, Y.Joo, C. W.Joo, K. K.Kang, K. H.Karyan, G.Kichimi, H.Kiesling, C.Kim, B. H.Kim, D. Y.Kim, K-HKim, K. T.Kim, S. H.Kim, Y. J.Kim, Y-KKinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kulasiri, R.Kumara, K.Kuzmin, A.Kwon, Y-JLee, S. C.Li, C. H.Li, L. K.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Liptak, Z.Liventsev, D.Luo, T.MacQueen, C.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Moon, T. J.Mori, T.Mussa, R.Nakano, T.Nakao, M.Natochii, A.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, K.Ogawa, S.Olsen, S. L.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, S-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Popov, VPrencipe, E.Prim, M. T.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Sangal, A.Santelj, L.Savinov, VSchnell, G.Schueler, J.Schwanda, C.Schwartz, A. J.Seidl, R.Seino, Y.Senyo, K.Sevior, M. E.Shapkin, M.Shebalin, VShiu, J-GShwartz, B.Sokolov, A.Solovieva, E.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tamponi, U.Tenchini, F.Uchida, M.Uglov, T.Uno, S.Usov, Y.Vahsen, S. E.Van Tonder, R.Varner, G.Vinokurova, A.Vorobyev, V.Vossen, A.Wang, C. H.Wang, E.Wang, M-ZWang, P.Watanabe, M.Watanuki, S.Wehle, S.Wiechczynski, J.Xu, X.Yabsley, B. D.Yan, W.Ye, H.Yelton, J.Yin, J. H.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V
Issue Date
15-3월-2021
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.103, no.5
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
103
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/128407
DOI
10.1103/PhysRevD.103.052005
ISSN
2470-0010
Abstract
We report branching fraction measurements of four decay modes of the Lambda(+)(c) baryon, each of which includes an eta meson and a Lambda baryon in the final state, and all of which are measured relative to the Lambda(+)(c) -> pK(-) eta(+) decay mode. The results are based on a 980 fb(-1) data sample collected by the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. Two decays, Lambda(+)(c) -> eta Sigma(0)pi(+) and Lambda(1670)pi(+), are observed for the first time, while the measurements of the other decay modes, Lambda(+)(c) -> eta Lambda pi(+) and eta Sigma(1385)(+), are more precise than those made previously. We obtain relative branching fractions of B(Lambda(+)(c) -> eta Lambda pi(+)) / B(Lambda(+)(c) -> pK(-) pi(+)) = 0.293 +/- 0.003 +/- 0.014, B(Lambda(+)(c) -> eta Sigma(0)pi(+))/B(Lambda(+)(c) -> pK(-) pi(+)) = 0.120 +/- 0.006 +/- 0.010, B(Lambda(+)(c) -> Lambda(1670)pi(+)) x B(Lambda(1670) -> eta Lambda)/B(Lambda(+)(c) -> pK(-) pi(+)) = (5.54 +/- 0.29 +/- 0.73) x 10(-2), and B(Lambda(+)(c) -> eta Sigma(1385)(+))/B(Lambda(+)(c) -> pK(-) pi(+)) = 0.192 +/- 0.006 +/- 0.016. The mass and width of the Lambda(1670) are also precisely determined to be 1674.3 +/- 0.8 +/- 4.9 MeV/c(2) and 36.1 +/- 2.4 +/- 4.8 MeV, respectively, where the uncertainties are statistical and systematic, respectively.
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