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Observation of Upsilon(4S) -> eta 'Upsilon(1S)

Authors
Guido, E.Mussa, R.Tamponi, U.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bakich, A. M.Bansal, V.Behera, P.Berger, M.Bhardwaj, V.Biswal, J.Bondar, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Di Carlo, S.Dolezal, Z.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, V.Gabyshev, N.Garmash, A.Gelb, M.Giri, A.Goldenzweig, P.Haba, J.Hara, T.Hayashii, H.Hedges, M. T.Hou, W. -S.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jeon, H. B.Jia, S.Jin, Y.Julius, T.Kang, K. H.Karyan, G.Kawasaki, T.Kiesling, C.Kim, D. Y.Kim, J. B.Kim, K. T.Kim, S. H.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kulasiri, R.Kumar, R.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lee, I. S.Lee, S. C.Li, L. K.Li, Y. B.Gioi, L. LiLibby, J.Liventsev, D.Lubej, M.Luo, T.MacNaughton, J.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moon, H. K.Mori, T.Nakano, E.Nakao, M.Nanut, T.Nath, K. J.Nayak, M.Niiyama, M.Nishida, S.Ogawa, S.Ono, H.Ostrowicz, W.Pakhlova, G.Pal, B.Pardi, S.Park, C. W.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, V.Rostomyan, A.Russo, G.Sakai, Y.Salehi, M.Sanuki, T.Schneider, O.Schnell, G.Schwanda, C.Seino, Y.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sokolov, A.Staric, M.Strube, J. F.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Usov, Y.Van Hulse, C.Varner, G.Vinokurova, A.Wang, B.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Widmann, E.Won, E.Ye, H.Yelton, J.Yuan, C. Z.Yusa, Y.Zakharov, S.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.
Issue Date
6-8월-2018
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.121, no.6
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW LETTERS
Volume
121
Number
6
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/73794
DOI
10.1103/PhysRevLett.121.062001
ISSN
0031-9007
Abstract
We report the first observation of the hadronic transition Upsilon(4S) -> eta'Upsilon(1S), using 496 fb(-1) data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct the eta' meson through its decays to rho(0)Upsilon and to pi(+)pi(-)eta, with eta -> gamma gamma. We measure B(Upsilon(4S) -> eta'Upsilon(1S)) = [3.43 +/- 0.88(stat) +/- 0.21(syst)] x 10(-5), with a significance of 5.7 sigma.
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