Observation of Υ(4S) → η1 Υ (1S)

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Date
2018-08-06
Author
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.
Bračko, M.
Browder, T. E.
Červenkov, 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.
Doležal, 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.
Kodyš, P.
Korpar, S.
Kotchetkov, D.
Križan, 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. Li
Libby, 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, Gunar
Schwanda, C.
Seino, Y.
Shebalin, V.
Shen, C. P.
Shibata, T. A.
Shiu, J.-G.
Shwartz, B.
Sokolov, A.
Starič, M.
Strube, J. F.
Sumihama, M.
Sumiyoshi, T.
Takizawa, M.
Tanida, K.
Tenchini, F.
Uchida, M.
Uglov, T.
Unno, Y.
Usov, Y.
Van Hulse, Charlotte Barbara
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 Zhukova, Valentina ORCID
Zhulanov, V.
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Physical Review Letters 121(6) : (2018) // Article ID 062001
URI
http://hdl.handle.net/10810/30327
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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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution tothe author(s) and the published article’s title, journal citation,and DOI.
Except where otherwise noted, this item's license is described as Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution tothe author(s) and the published article’s title, journal citation,and DOI.