Measurement of branching fractions of Δ<sub>c</sub><SUP>+</SUP> → ηΛπ<SUP>+</SUP>, ηΣ<SUP>0</SUP>π<SUP>+</SUP>, Λ(1670)π<SUP>+</SUP>, and ηΣ(1385)<SUP>+</SUP>
  • Lee, J. Y.
  • Tanida, K.
  • Kato, Y.
  • Kim, S. K.
  • Yang, S. B.
  • ... Choi, S-K
  • 외 193명
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초록

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.

키워드

QUARK-MODELDECAYSLAMBDA(+)(C)
제목
Measurement of branching fractions of Δ<sub>c</sub><SUP>+</SUP> → ηΛπ<SUP>+</SUP>, ηΣ<SUP>0</SUP>π<SUP>+</SUP>, Λ(1670)π<SUP>+</SUP>, and ηΣ(1385)<SUP>+</SUP>
저자
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
DOI
10.1103/PhysRevD.103.052005
발행일
2021-03
유형
Article
저널명
Physical Review d
103
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