Observation of ϒ(4S)→η^{'}ϒ(1S)

E Guido; R Mussa; U Tamponi; H Aihara; S Al Said; D M Asner; H Atmacan; V Aulchenko; T Aushev; R Ayad; V Babu; I Badhrees; A M Bakich; V Bansal; P Behera; M Berger; V Bhardwaj; J Biswal; A Bondar; G Bonvicini; A Bozek; M Bračko; T E Browder; D Červenkov; V Chekelian; A Chen; B G Cheon; K Chilikin; K Cho; S-K Choi; Y Choi; S Choudhury; D Cinabro; S Cunliffe; S Di Carlo; Z Doležal; S Eidelman; D Epifanov; J E Fast; T Ferber; B G Fulsom; R Garg; V Gaur; N Gabyshev; A Garmash; M Gelb; A Giri; P Goldenzweig; J Haba; T Hara; H Hayashii; M T Hedges; W-S Hou; K Inami; G Inguglia; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; W W Jacobs; H B Jeon; S Jia; Y Jin; T Julius; K H Kang; G Karyan; T Kawasaki; C Kiesling; D Y Kim; J B Kim; K T Kim; S H Kim; K Kinoshita; P Kodyš; S Korpar; D Kotchetkov; P Križan; R Kroeger; P Krokovny; R Kulasiri; R Kumar; T Kumita; A Kuzmin; Y-J Kwon; I S Lee; S C Lee; L K Li; Y B Li; L Li Gioi; J Libby; D Liventsev; M Lubej; T Luo; J MacNaughton; M Masuda; T Matsuda; D Matvienko; M Merola; K Miyabayashi; H Miyata; R Mizuk; G B Mohanty; H K Moon; T Mori; E Nakano; M Nakao; T Nanut; K J Nath; M Nayak; M Niiyama; S Nishida; S Ogawa; H Ono; W Ostrowicz; G Pakhlova; B Pal; S Pardi; C W Park; S Paul; T K Pedlar; R Pestotnik; L E Piilonen; V Popov; A Rostomyan; G Russo; Y Sakai; M Salehi; T Sanuki; O Schneider; G Schnell; C Schwanda; Y Seino; V Shebalin; C P Shen; T-A Shibata; J-G Shiu; B Shwartz; A Sokolov; M Starič; J F Strube; M Sumihama; T Sumiyoshi; M Takizawa; K Tanida; F Tenchini; M Uchida; T Uglov; Y Unno; Y Usov; C Van Hulse; G Varner; A Vinokurova; B Wang; C H Wang; M-Z Wang; P Wang; X L Wang; M Watanabe; Y Watanabe; E Widmann; E Won; H Ye; J Yelton; C Z Yuan; Y Yusa; S Zakharov; Z P Zhang; V Zhilich; V Zhukova; V Zhulanov; Belle Collaboration

doi:10.1103/PhysRevLett.121.062001

Observation of ϒ(4S)→η^{'}ϒ(1S)

Phys Rev Lett. 2018 Aug 10;121(6):062001. doi: 10.1103/PhysRevLett.121.062001.

Authors

E Guido¹, R Mussa¹, U Tamponi^{1

2}, H Aihara³, S Al Said^{4

5}, D M Asner⁶, H Atmacan⁷, V Aulchenko^{8

9}, T Aushev¹⁰, R Ayad⁵, V Babu¹¹, I Badhrees^{12

5}, A M Bakich¹³, V Bansal⁶, P Behera¹⁴, M Berger¹⁵, V Bhardwaj¹⁶, J Biswal¹⁷, A Bondar^{8

9}, G Bonvicini¹⁸, A Bozek¹⁹, M Bračko^{17

20}, T E Browder²¹, D Červenkov²², V Chekelian²³, A Chen²⁴, B G Cheon²⁵, K Chilikin^{26

27}, K Cho²⁸, S-K Choi²⁹, Y Choi³⁰, S Choudhury³¹, D Cinabro¹⁸, S Cunliffe⁶, S Di Carlo¹⁸, Z Doležal²², S Eidelman^{8

9}, D Epifanov^{8

9}, J E Fast⁶, T Ferber³², B G Fulsom⁶, R Garg³³, V Gaur³⁴, N Gabyshev^{8

9}, A Garmash^{8

9}, M Gelb³⁵, A Giri³¹, P Goldenzweig³⁵, J Haba^{36

37}, T Hara^{36

37}, H Hayashii³⁸, M T Hedges²¹, W-S Hou³⁹, K Inami⁴⁰, G Inguglia³², A Ishikawa⁴¹, R Itoh^{36

37}, M Iwasaki⁴², Y Iwasaki³⁷, W W Jacobs⁴³, H B Jeon⁴⁴, S Jia⁴⁵, Y Jin³, T Julius⁴⁶, K H Kang⁴⁴, G Karyan³², T Kawasaki⁴⁷, C Kiesling²³, D Y Kim⁴⁸, J B Kim⁴⁹, K T Kim⁴⁹, S H Kim²⁵, K Kinoshita⁵⁰, P Kodyš²², S Korpar^{17

20}, D Kotchetkov²¹, P Križan^{17

51}, R Kroeger⁵², P Krokovny^{8

9}, R Kulasiri⁵³, R Kumar⁵⁴, T Kumita⁵⁵, A Kuzmin^{8

9}, Y-J Kwon⁵⁶, I S Lee²⁵, S C Lee⁴⁴, L K Li⁵⁷, Y B Li⁵⁸, L Li Gioi²³, J Libby¹⁴, D Liventsev^{37

34}, M Lubej¹⁷, T Luo⁵⁹, J MacNaughton³⁷, M Masuda⁶⁰, T Matsuda⁶¹, D Matvienko^{8

9}, M Merola⁶², K Miyabayashi³⁸, H Miyata⁴⁷, R Mizuk^{26

27

10}, G B Mohanty¹¹, H K Moon⁴⁹, T Mori⁴⁰, E Nakano⁴², M Nakao^{36

37}, T Nanut¹⁷, K J Nath⁶³, M Nayak^{37

18}, M Niiyama⁶⁴, S Nishida^{36

37}, S Ogawa⁶⁵, H Ono^{66

47}, W Ostrowicz¹⁹, G Pakhlova^{26

10}, B Pal⁵⁰, S Pardi⁶², C W Park³⁰, S Paul⁶⁷, T K Pedlar⁶⁸, R Pestotnik¹⁷, L E Piilonen³⁴, V Popov¹⁰, A Rostomyan³², G Russo⁶², Y Sakai^{36

37}, M Salehi^{69

70}, T Sanuki⁴¹, O Schneider⁷¹, G Schnell^{72

73}, C Schwanda⁷⁴, Y Seino⁴⁷, V Shebalin^{8

9}, C P Shen⁴⁵, T-A Shibata⁷⁵, J-G Shiu³⁹, B Shwartz^{8

9}, A Sokolov⁷⁶, M Starič¹⁷, J F Strube⁶, M Sumihama⁷⁷, T Sumiyoshi⁵⁵, M Takizawa^{78

79

80}, K Tanida⁸¹, F Tenchini⁴⁶, M Uchida⁷⁵, T Uglov^{26

10}, Y Unno²⁵, Y Usov^{8

9}, C Van Hulse⁷², G Varner²¹, A Vinokurova^{8

9}, B Wang⁵⁰, C H Wang⁸², M-Z Wang³⁹, P Wang⁵⁷, X L Wang⁵⁹, M Watanabe⁴⁷, Y Watanabe⁸³, E Widmann¹⁵, E Won⁴⁹, H Ye³², J Yelton⁸⁴, C Z Yuan⁵⁷, Y Yusa⁴⁷, S Zakharov^{26

10}, Z P Zhang⁸⁵, V Zhilich^{8

9}, V Zhukova^{26

27}, V Zhulanov^{8

9}; Belle Collaboration

Affiliations

¹ INFN-Sezione di Torino, 10125 Torino.
² University of Torino, 10124 Torino.
³ Department of Physics, University of Tokyo, Tokyo 113-0033.
⁴ Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
⁵ Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
⁶ Pacific Northwest National Laboratory, Richland, Washington 99352.
⁷ University of South Carolina, Columbia, South Carolina 29208.
⁸ Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
⁹ Novosibirsk State University, Novosibirsk 630090.
¹⁰ Moscow Institute of Physics and Technology, Moscow Region 141700.
¹¹ Tata Institute of Fundamental Research, Mumbai 400005.
¹² King Abdulaziz City for Science and Technology, Riyadh 11442.
¹³ School of Physics, University of Sydney, New South Wales 2006.
¹⁴ Indian Institute of Technology Madras, Chennai 600036.
¹⁵ Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
¹⁶ Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
¹⁷ J. Stefan Institute, 1000 Ljubljana.
¹⁸ Wayne State University, Detroit, Michigan 48202.
¹⁹ H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
²⁰ University of Maribor, 2000 Maribor.
²¹ University of Hawaii, Honolulu, Hawaii 96822.
²² Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
²³ Max-Planck-Institut für Physik, 80805 München.
²⁴ National Central University, Chung-li 32054.
²⁵ Hanyang University, Seoul 133-791.
²⁶ P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
²⁷ Moscow Physical Engineering Institute, Moscow 115409.
²⁸ Korea Institute of Science and Technology Information, Daejeon 305-806.
²⁹ Gyeongsang National University, Chinju 660-701.
³⁰ Sungkyunkwan University, Suwon 440-746.
³¹ Indian Institute of Technology Hyderabad, Telangana 502285.
³² Deutsches Elektronen-Synchrotron, 22607 Hamburg.
³³ Panjab University, Chandigarh 160014.
³⁴ Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
³⁵ Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
³⁶ SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
³⁷ High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
³⁸ Nara Women's University, Nara 630-8506.
³⁹ Department of Physics, National Taiwan University, Taipei 10617.
⁴⁰ Graduate School of Science, Nagoya University, Nagoya 464-8602.
⁴¹ Department of Physics, Tohoku University, Sendai 980-8578.
⁴² Osaka City University, Osaka 558-8585.
⁴³ Indiana University, Bloomington, Indiana 47408.
⁴⁴ Kyungpook National University, Daegu 702-701.
⁴⁵ Beihang University, Beijing 100191.
⁴⁶ School of Physics, University of Melbourne, Victoria 3010.
⁴⁷ Niigata University, Niigata 950-2181.
⁴⁸ Soongsil University, Seoul 156-743.
⁴⁹ Korea University, Seoul 136-713.
⁵⁰ University of Cincinnati, Cincinnati, Ohio 45221.
⁵¹ Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
⁵² University of Mississippi, University, Mississippi 38677.
⁵³ Kennesaw State University, Kennesaw, Georgia 30144.
⁵⁴ Punjab Agricultural University, Ludhiana 141004.
⁵⁵ Tokyo Metropolitan University, Tokyo 192-0397.
⁵⁶ Yonsei University, Seoul 120-749.
⁵⁷ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
⁵⁸ Peking University, Beijing 100871.
⁵⁹ Fudan University, Shanghai 200443.
⁶⁰ Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
⁶¹ University of Miyazaki, Miyazaki 889-2192.
⁶² INFN-Sezione di Napoli, 80126 Napoli.
⁶³ Indian Institute of Technology Guwahati, Assam 781039.
⁶⁴ Kyoto University, Kyoto 606-8502.
⁶⁵ Toho University, Funabashi 274-8510.
⁶⁶ Nippon Dental University, Niigata 951-8580.
⁶⁷ Department of Physics, Technische Universität München, 85748 Garching.
⁶⁸ Luther College, Decorah, Iowa 52101.
⁶⁹ Ludwig Maximilians University, 80539 Munich.
⁷⁰ University of Malaya, 50603 Kuala Lumpur.
⁷¹ École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
⁷² University of the Basque Country UPV/EHU, 48080 Bilbao.
⁷³ IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
⁷⁴ Institute of High Energy Physics, Vienna 1050.
⁷⁵ Tokyo Institute of Technology, Tokyo 152-8550.
⁷⁶ Institute for High Energy Physics, Protvino 142281.
⁷⁷ Gifu University, Gifu 501-1193.
⁷⁸ J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
⁷⁹ Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198.
⁸⁰ Showa Pharmaceutical University, Tokyo 194-8543.
⁸¹ Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195.
⁸² National United University, Miao Li 36003.
⁸³ Kanagawa University, Yokohama 221-8686.
⁸⁴ University of Florida, Gainesville, Florida 32611.
⁸⁵ University of Science and Technology of China, Hefei 230026.

PMID: 30141661
DOI: 10.1103/PhysRevLett.121.062001

Abstract

We report the first observation of the hadronic transition ϒ(4S)→η^{'}ϒ(1S), using 496 fb^{-1} data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We reconstruct the η^{'} meson through its decays to ρ^{0}γ and to π^{+}π^{-}η, with η→γγ. We measure B(ϒ(4S)→η^{'}ϒ(1S))=[3.43±0.88(stat)±0.21(syst)]×10^{-5}, with a significance of 5.7σ.