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Phys Rev Lett. 2015 May 29;114(21):211801. doi: 10.1103/PhysRevLett.114.211801. Epub 2015 May 27.

Search for the dark photon and the dark Higgs boson at belle.

Physical review letters

I Jaegle, I Adachi, H Aihara, S Al Said, D M Asner, T Aushev, R Ayad, A M Bakich, V Bansal, M Barrett, B Bhuyan, A Bozek, M Bračko, T E Browder, D Červenkov, M-C Chang, B G Cheon, K Chilikin, K Cho, V Chobanova, S-K Choi, Y Choi, D Cinabro, J Dalseno, Z Doležal, Z Drásal, A Drutskoy, D Dutta, S Eidelman, D Epifanov, H Farhat, J E Fast, T Ferber, O Frost, V Gaur, N Gabyshev, S Ganguly, A Garmash, D Getzkow, R Gillard, Y M Goh, B Golob, O Grzymkowska, K Hayasaka, H Hayashii, X H He, M Hedges, W-S Hou, T Iijima, K Inami, A Ishikawa, Y Iwasaki, T Julius, K H Kang, E Kato, T Kawasaki, D Y Kim, J B Kim, J H Kim, S H Kim, K Kinoshita, B R Ko, P Kodyš, S Korpar, P Križan, P Krokovny, A Kuzmin, Y-J Kwon, J S Lange, I S Lee, P Lewis, L Li Gioi, J Libby, D Liventsev, D Matvienko, H Miyata, R Mizuk, G B Mohanty, A Moll, R Mussa, E Nakano, M Nakao, N K Nisar, S Nishida, S Ogawa, P Pakhlov, G Pakhlova, H Park, T K Pedlar, L Pesántez, M Petrič, L E Piilonen, M Ritter, A Rostomyan, Y Sakai, S Sandilya, L Santelj, T Sanuki, Y Sato, V Savinov, O Schneider, G Schnell, C Schwanda, D Semmler, K Senyo, O Seon, I Seong, M E Sevior, V Shebalin, T-A Shibata, J-G Shiu, B Shwartz, F Simon, R Sinha, Y-S Sohn, M Starič, M Sumihama, K Sumisawa, U Tamponi, G Tatishvili, Y Teramoto, F Thorne, M Uchida, S Uehara, Y Unno, S Uno, S E Vahsen, C Van Hulse, P Vanhoefer, G Varner, A Vinokurova, M N Wagner, C H Wang, M-Z Wang, P Wang, X L Wang, M Watanabe, Y Watanabe, K M Williams, E Won, J Yamaoka, S Yashchenko, Y Yook, Y Yusa, V Zhilich, V Zhulanov, A Zupanc,

Affiliations

  1. University of Hawaii, Honolulu, Hawaii 96822.
  2. The Graduate University for Advanced Studies, Hayama 240-0193.
  3. High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  4. Department of Physics, University of Tokyo, Tokyo 113-0033.
  5. Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
  6. Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  7. Pacific Northwest National Laboratory, Richland, Washington 99352.
  8. Institute for Theoretical and Experimental Physics, Moscow 117218.
  9. Moscow Institute of Physics and Technology, Moscow Region 141700.
  10. School of Physics, University of Sydney, NSW 2006.
  11. Indian Institute of Technology Guwahati, Assam 781039.
  12. H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  13. J. Stefan Institute, 1000 Ljubljana.
  14. University of Maribor, 2000 Maribor.
  15. Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  16. Department of Physics, Fu Jen Catholic University, Taipei 24205.
  17. Hanyang University, Seoul 133-791.
  18. Korea Institute of Science and Technology Information, Daejeon 305-806.
  19. Max-Planck-Institut für Physik, 80805 München.
  20. Gyeongsang National University, Chinju 660-701.
  21. Sungkyunkwan University, Suwon 440-746.
  22. Wayne State University, Detroit, Michigan 48202.
  23. Excellence Cluster Universe, Technische Universität München, 85748 Garching.
  24. Moscow Physical Engineering Institute, Moscow 115409.
  25. Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
  26. Deutsches Elektronen-Synchrotron, 22607 Hamburg.
  27. Tata Institute of Fundamental Research, Mumbai 400005.
  28. Justus-Liebig-Universität Gießen, 35392 Gießen.
  29. Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
  30. Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
  31. Nara Women's University, Nara 630-8506.
  32. Peking University, Beijing 100871.
  33. Department of Physics, National Taiwan University, Taipei 10617.
  34. Graduate School of Science, Nagoya University, Nagoya 464-8602.
  35. Tohoku University, Sendai 980-8578.
  36. School of Physics, University of Melbourne, Victoria 3010.
  37. Kyungpook National University, Daegu 702-701.
  38. Niigata University, Niigata 950-2181.
  39. Soongsil University, Seoul 156-743.
  40. Korea University, Seoul 136-713.
  41. University of Cincinnati, Cincinnati, Ohio 45221.
  42. Yonsei University, Seoul 120-749.
  43. Indian Institute of Technology Madras, Chennai 600036.
  44. INFN-Sezione di Torino, 10125 Torino.
  45. Osaka City University, Osaka 558-8585.
  46. Toho University, Funabashi 274-8510.
  47. Luther College, Decorah, Iowa 52101.
  48. University of Bonn, 53115 Bonn.
  49. CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
  50. University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
  51. École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
  52. University of the Basque Country UPV/EHU, 48080 Bilbao.
  53. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao.
  54. Institute of High Energy Physics, Vienna 1050.
  55. Yamagata University, Yamagata 990-8560.
  56. Tokyo Institute of Technology, Tokyo 152-8550.
  57. Institute of Mathematical Sciences, Chennai 600113.
  58. Gifu University, Gifu 501-1193.
  59. University of Torino, 10124 Torino.
  60. National United University, Miao Li 36003.
  61. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
  62. Kanagawa University, Yokohama 221-8686.

PMID: 26066427 DOI: 10.1103/PhysRevLett.114.211801

Abstract

The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical constituents featured in a number of recently proposed dark sector models. Assuming prompt decays of both dark particles, we search for their production in the so-called Higgstrahlung channel e^{+}e^{-}→A^{'}h^{'}, with h^{'}→A^{'}A^{'}. We investigate ten exclusive final states with A^{'}→e^{+}e^{-}, μ^{+}μ^{-}, or π^{+}π^{-} in the mass ranges 0.1  GeV/c^{2} 

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