Seong IS 1 , Vahsen SE 1 , Adachi I 2 , Aihara H 3 , Al Said S 4 , Asner DM 5 Show all authors , Aulchenko V 6 , Aushev T 7 , Ayad R 8 , Babu V 9 , Bakich AM 10 , Bansal V 11 , Behera P 12 , Bhardwaj V 13 , Bhuyan B 14 , Bilka T 15 , Biswal J 16 , Bobrov A 6 , Bonvicini G 17 , Bozek A 18 , Bračko M 16 , Browder TE 1 , Cao L 19 , Červenkov D 15 , Chang P 20 , Chekelian V 21 , Chen A 22 , Cheon BG 23 , Chilikin K 24 , Cho K 25 , Choi Y 26 , Choudhury S 27 , Cinabro D 17 , Cunliffe S 28 , Dash N 29 , Di Carlo S 30 , Dingfelder J 31 , Dong TV 2 , Eidelman S 6 , Epifanov D 6 , Fast JE 11 , Frey A 32 , Fulsom BG 11 , Garg R 33 , Gaur V 34 , Gabyshev N 6 , Garmash A 6 , Gelb M 19 , Giri A 27 , Goldenzweig P 19 , Golob B 16 , Guido E 35 , Haba J 2 , Hayasaka K 36 , Hayashii H 37 , Hedges MT 1 , Higuchi T 38 , Hou WS 20 , Hsu CL 10 , Huang K 20 , Iijima T 39 , Inami K 39 , Inguglia G 28 , Ishikawa A 40 , Itoh R 2 , Iwasaki M 41 , Iwasaki Y 42 , Jacobs WW 43 , Jeon HB 44 , Jia S 45 , Jin Y 3 , Joffe D 46 , Joo KK 47 , Julius T 48 , Kaliyar AB 12 , Karyan G 28 , Kawasaki T 49 , Kichimi H 42 , Kiesling C 21 , Kim DY 50 , Kim JB 51 , Kim KT 51 , Kim SH 23 , Kinoshita K 52 , Kodyš P 15 , Korpar S 16 , Kotchetkov D 1 , Križan P 16 , Kroeger R 53 , Krokovny P 6 , Kuhr T 54 , Kumita T 55 , Kuzmin A 6 , Kwon YJ 56 , Lange JS 57 , Lee IS 23 , Lee SC 44 , Li LK 58 , Li YB 59 , Li Gioi L 21 , Libby J 12 , Liventsev D 42 , Lubej M 16 , Luo T 60 , MacQueen C 48 , Masuda M 61 , Matsuda T 62 , Merola M 63 , Miyabayashi K 37 , Miyata H 36 , Mizuk R 24 , Mohanty GB 9 , Mori T 39 , Mussa R 35 , Nakano E 41 , Nakao M 2 , Nanut T 16 , Nath KJ 14 , Nayak M 42 , Niiyama M 64 , Nisar NK 65 , Nishida S 2 , Nishimura K 1 , Ogawa S 66 , Ono H 67 , Ostrowicz W 18 , Pakhlov P 24 , Pakhlova G 24 , Pal B 5 , Park H 44 , Pedlar TK 68 , Pestotnik R 16 , Piilonen LE 34 , Prencipe E 69 , Ritter M 54 , Rostomyan A 28 , Russo G 63 , Sakai Y 2 , Salehi M 54 , Sandilya S 52 , Santelj L 42 , Sanuki T 40 , Savinov V 65 , Schneider O 70 , Schnell G 71 , Schueler J 1 , Schwanda C 72 , Seino Y 36 , Senyo K 73 , Seon O 39 , Sevior ME 48 , Shen CP 45 , Shibata TA 74 , Shiu JG 20 , Simon F 21 , Solovieva E 24 , Stanič S 75 , Starič M 16 , Sumihama M 76 , Sumiyoshi T 55 , Sutcliffe W 19 , Takizawa M 77 , Tanida K 78 , Tenchini F 48 , Trabelsi K 2 , Uchida M 74 , Uglov T 24 , Unno Y 23 , Uno S 2 , Usov Y 6 , Van Hulse C 71 , Van Tonder R 19 , Varner G 1 , Vinokurova A 6 , Vossen A 79 , Wang B 52 , Wang CH 80 , Wang P 58 , Watanabe M 36 , Watanuki S 40 , Widmann E 81 , Won E 51 , Yamamoto H 40 , Ye H 28 , Yelton J 82 , Yuan CZ 58 , Yusa Y 36 , Zakharov S 24 , Zhang ZP 83 , Zhilich V 6 , Zhukova V 24 , Zhulanov V 6 , Zupanc A 16 , Belle Collaboration

Affiliations 

  • 1 University of Hawaii, Honolulu, Hawaii 96822
  • 2 SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
  • 3 Department of Physics, University of Tokyo, Tokyo 113-0033
  • 4 Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589
  • 5 Brookhaven National Laboratory, Upton, New York 11973
  • 6 Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
  • 7 Moscow Institute of Physics and Technology, Moscow Region 141700
  • 8 Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
  • 9 Tata Institute of Fundamental Research, Mumbai 400005
  • 10 School of Physics, University of Sydney, New South Wales 2006
  • 11 Pacific Northwest National Laboratory, Richland, Washington 99352
  • 12 Indian Institute of Technology Madras, Chennai 600036
  • 13 Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
  • 14 Indian Institute of Technology Guwahati, Assam 781039
  • 15 Faculty of Mathematics and Physics, Charles University, 121 16 Prague
  • 16 J. Stefan Institute, 1000 Ljubljana
  • 17 Wayne State University, Detroit, Michigan 48202
  • 18 H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
  • 19 Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
  • 20 Department of Physics, National Taiwan University, Taipei 10617
  • 21 Max-Planck-Institut für Physik, 80805 München
  • 22 National Central University, Chung-li 32054
  • 23 Hanyang University, Seoul 133-791
  • 24 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
  • 25 Korea Institute of Science and Technology Information, Daejeon 305-806
  • 26 Sungkyunkwan University, Suwon 440-746
  • 27 Indian Institute of Technology Hyderabad, Telangana 502285
  • 28 Deutsches Elektronen-Synchrotron, 22607 Hamburg
  • 29 Indian Institute of Technology Bhubaneswar, Satya Nagar 751007
  • 30 LAL, University Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay
  • 31 University of Bonn, 53115 Bonn
  • 32 II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen
  • 33 Panjab University, Chandigarh 160014
  • 34 Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
  • 35 INFN-Sezione di Torino, 10125 Torino
  • 36 Niigata University, Niigata 950-2181
  • 37 Nara Women's University, Nara 630-8506
  • 38 Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
  • 39 Graduate School of Science, Nagoya University, Nagoya 464-8602
  • 40 Department of Physics, Tohoku University, Sendai 980-8578
  • 41 Osaka City University, Osaka 558-8585
  • 42 High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
  • 43 Indiana University, Bloomington, Indiana 47408
  • 44 Kyungpook National University, Daegu 702-701
  • 45 Beihang University, Beijing 100191
  • 46 Kennesaw State University, Kennesaw, Georgia 30144
  • 47 Chonnam National University, Kwangju 660-701
  • 48 School of Physics, University of Melbourne, Victoria 3010
  • 49 Kitasato University, Tokyo 108-0072
  • 50 Soongsil University, Seoul 156-743
  • 51 Korea University, Seoul 136-713
  • 52 University of Cincinnati, Cincinnati, Ohio 45221
  • 53 University of Mississippi, University, Mississippi 38677
  • 54 Ludwig Maximilians University, 80539 Munich
  • 55 Tokyo Metropolitan University, Tokyo 192-0397
  • 56 Yonsei University, Seoul 120-749
  • 57 Justus-Liebig-Universität Gießen, 35392 Gießen
  • 58 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
  • 59 Peking University, Beijing 100871
  • 60 Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
  • 61 Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
  • 62 University of Miyazaki, Miyazaki 889-2192
  • 63 INFN-Sezione di Napoli, 80126 Napoli
  • 64 Kyoto University, Kyoto 606-8502
  • 65 University of Pittsburgh, Pittsburgh, Pennsylvania 15260
  • 66 Toho University, Funabashi 274-8510
  • 67 Nippon Dental University, Niigata 951-8580
  • 68 Luther College, Decorah, Iowa 52101
  • 69 Forschungszentrum Jülich, 52425 Jülich
  • 70 École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015
  • 71 University of the Basque Country UPV/EHU, 48080 Bilbao
  • 72 Institute of High Energy Physics, Vienna 1050
  • 73 Yamagata University, Yamagata 990-8560
  • 74 Tokyo Institute of Technology, Tokyo 152-8550
  • 75 University of Nova Gorica, 5000 Nova Gorica
  • 76 Gifu University, Gifu 501-1193
  • 77 J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
  • 78 Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195
  • 79 Duke University, Durham, North Carolina 27708
  • 80 National United University, Miao Li 36003
  • 81 Stefan Meyer Institute for Subatomic Physics, Vienna 1090
  • 82 University of Florida, Gainesville, Florida 32611
  • 83 University of Science and Technology of China, Hefei 230026
Phys. Rev. Lett., 2019 Jan 11;122(1):011801.
PMID: 31012694 DOI: 10.1103/PhysRevLett.122.011801

Abstract

We report on the first Belle search for a light CP-odd Higgs boson, A^{0}, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition ϒ(2S)→ϒ(1S)π^{+}π^{-}, followed by the on-shell process ϒ(1S)→γA^{0} with A^{0}→χχ, or by the off-shell process ϒ(1S)→γχχ. Utilizing a data sample of 157.3×10^{6} ϒ(2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges M_{A^{0}}<8.97  GeV/c^{2} and M_{χ}<4.44  GeV/c^{2}. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5  GeV/c^{2}.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.