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Angular analysis of the e+e−→D(*)±D*∓ process near the open charm threshold using initial-state radiation

V. Zhukova37,46, G. Pakhlova37,47, P. Pakhlov37,46, I. Adachi13,9, H. Aihara73, S. Al Said66,31, D. M. Asner58, V. Aulchenko3,56, T. Aushev47 et al. (Belle Collaboration)

T. Aushev47, R. Ayad66, V. Babu67, I. Badhrees66,30, P. Behera18, B. Bhuyan17, J. Biswal26, A. Bobrov3,56, G. Bonvicini77, A. Bozek53, M. Bračko42,26, T. E. Browder12, D. Červenkov4, V. Chekelian43, A. Chen50, B. G. Cheon11, K. Chilikin37,46, K. Cho32, S.-K. Choi10, Y. Choi65, D. Cinabro77, T. Czank71, N. Dash16, S. Di Carlo77, Z. Doležal4, Z. Drásal4, S. Eidelman3,56, H. Farhat77, J. E. Fast58, T. Ferber6, B. G. Fulsom58, V. Gaur76, A. Garmash3,56, R. Gillard77, P. Goldenzweig28, O. Grzymkowska53, E. Guido24, J. Haba13,9, K. Hayasaka55, H. Hayashii49, M. T. Hedges12, W.-S. Hou52, K. Inami48, G. Inguglia6, A. Ishikawa71, R. Itoh13,9, M. Iwasaki57, Y. Iwasaki13, W. W. Jacobs19, I. Jaegle7, H. B. Jeon35, S. Jia2, Y. Jin73, T. Julius44, K. H. Kang35, G. Karyan6, C. Kiesling43, D. Y. Kim64, K. T. Kim33, S. H. Kim11, S. Korpar42,26, D. Kotchetkov12, P. Križan38,26, P. Krokovny3,56, R. Kulasiri29, Y.-J. Kwon79, J. S. Lange8, L. Li61, L. Li Gioi43, D. Liventsev76,13, T. Luo59, M. Masuda72, T. Matsuda45, M. Merola23, K. Miyabayashi49, H. Miyata55, R. Mizuk37,46,47, G. B. Mohanty67, H. K. Moon33, T. Mori48, M. Nakao13,9, T. Nanut26, K. J. Nath17, M. Nayak77,13, M. Niiyama34, N. K. Nisar59, S. Nishida13,9, S. Ogawa70, S. L. Olsen62, H. Ono54,55, B. Pal5, C.-S. Park79, C. W. Park65, S. Paul69, I. Pavelkin47, T. K. Pedlar40, R. Pestotnik26, L. E. Piilonen76, V. Popov47, C. Pulvermacher13, A. Rostomyan6, Y. Sakai13,9, M. Salehi41,39, S. Sandilya5, T. Sanuki71, O. Schneider36, G. Schnell1,15, C. Schwanda21, Y. Seino55, K. Senyo78, M. E. Sevior44, V. Shebalin3,56, T.-A. Shibata74, J.-G. Shiu52, B. Shwartz3,56, F. Simon43,68, A. Sokolov22, E. Solovieva37,47, M. Starič26, T. Sumiyoshi75, M. Takizawa63,14,60, K. Tanida25, F. Tenchini44, K. Trabelsi13,9, M. Uchida74, S. Uehara13,9, T. Uglov37,47, Y. Unno11, S. Uno13,9, Y. Usov3,56, C. Van Hulse1, G. Varner12, A. Vinokurova3,56, V. Vorobyev3,56, E. Waheed44, C. H. Wang51, M.-Z. Wang52, P. Wang20, X. L. Wang58,13, Y. Watanabe27, S. Watanuki71, E. Won33, Y. Yamashita54, Y. Yusa55, S. Zakharov37, Z. P. Zhang61, V. Zhilich3,56, V. Zhulanov3,56, and A. Zupanc38,26 (Belle Collaboration)

  • 1University of the Basque Country UPV/EHU, 48080 Bilbao, Spain
  • 2Beihang University, Beijing 100191, China
  • 3Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia
  • 4Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
  • 5University of Cincinnati, Cincinnati, Ohio 45221, USA
  • 6Deutsches Elektronen–Synchrotron, 22607 Hamburg, USA
  • 7University of Florida, Gainesville, Florida 32611, USA
  • 8Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
  • 9SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
  • 10Gyeongsang National University, Chinju 660-701, Korea
  • 11Hanyang University, Seoul 133-791, Korea
  • 12University of Hawaii, Honolulu, Hawaii 96822, USA
  • 13High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
  • 14J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
  • 15IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
  • 16Indian Institute of Technology Bhubaneswar, Satya Nagar 751007, India
  • 17Indian Institute of Technology Guwahati, Assam 781039, India
  • 18Indian Institute of Technology Madras, Chennai 600036, India
  • 19Indiana University, Bloomington, Indiana 47408, USA
  • 20Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 21Institute of High Energy Physics, Vienna 1050, Austria
  • 22Institute for High Energy Physics, Protvino 142281, Russia
  • 23INFN—Sezione di Napoli, 80126 Napoli, Italy
  • 24INFN—Sezione di Torino, 10125 Torino, Italy
  • 25Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195, Japan
  • 26J. Stefan Institute, 1000 Ljubljana, Slovenia
  • 27Kanagawa University, Yokohama 221-8686, Japan
  • 28Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
  • 29Kennesaw State University, Kennesaw, Georgia 30144, USA
  • 30King Abdulaziz City for Science and Technology, Riyadh 11442, Saudi Arabia
  • 31Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
  • 32Korea Institute of Science and Technology Information, Daejeon 305-806, Korea
  • 33Korea University, Seoul 136-713, Korea
  • 34Kyoto University, Kyoto 606-8502, Japan
  • 35Kyungpook National University, Daegu 702-701, Korea
  • 36École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
  • 37P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russia
  • 38Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
  • 39Ludwig Maximilians University, 80539 Munich, Germany
  • 40Luther College, Decorah, Iowa 52101, USA
  • 41University of Malaya, 50603 Kuala Lumpur, Malaysia
  • 42University of Maribor, 2000 Maribor, Slovenia
  • 43Max-Planck-Institut für Physik, 80805 München, Germany
  • 44School of Physics, University of Melbourne, Victoria 3010, Australia
  • 45University of Miyazaki, Miyazaki 889-2192, Japan
  • 46Moscow Physical Engineering Institute, Moscow 115409, Russia
  • 47Moscow Institute of Physics and Technology, Moscow Region 141700, Russia
  • 48Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
  • 49Nara Women’s University, Nara 630-8506, Japan
  • 50National Central University, Chung-li 32054, China
  • 51National United University, Miao Li 36003, China
  • 52Department of Physics, National Taiwan University, Taipei 10617, Taiwan
  • 53H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
  • 54Nippon Dental University, Niigata 951-8580, Japan
  • 55Niigata University, Niigata 950-2181, Japan
  • 56Novosibirsk State University, Novosibirsk 630090, Russia
  • 57Osaka City University, Osaka 558-8585, Japan
  • 58Pacific Northwest National Laboratory, Richland, Washington 99352, USA
  • 59University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
  • 60Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198, Japan
  • 61University of Science and Technology of China, Hefei 230026, China
  • 62Seoul National University, Seoul 151-742, Korea
  • 63Showa Pharmaceutical University, Tokyo 194-8543, Japan
  • 64Soongsil University, Seoul 156-743, Korea
  • 65Sungkyunkwan University, Suwon 440-746, Korea
  • 66Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Saudi Arabia
  • 67Tata Institute of Fundamental Research, Mumbai 400005, India
  • 68Excellence Cluster Universe, Technische Universität München, 85748 Garching, Germany
  • 69Department of Physics, Technische Universität München, 85748 Garching, Germany
  • 70Toho University, Funabashi 274-8510, Japan
  • 71Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 72Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan
  • 73Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
  • 74Tokyo Institute of Technology, Tokyo 152-8550, Japan
  • 75Tokyo Metropolitan University, Tokyo 192-0397, Japan
  • 76Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
  • 77Wayne State University, Detroit, Michigan 48202, USA
  • 78Yamagata University, Yamagata 990-8560, Japan
  • 79Yonsei University, Seoul 120-749, Korea

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Phys. Rev. D 97, 012002 – Published 10 January, 2018

DOI: https://doi.org/10.1103/PhysRevD.97.012002

Abstract

We report a new measurement of the exclusive e+e−→D(*)±D*∓ cross sections as a function of the center-of-mass energy from the D(*)±D*∓ threshold through s=6.0  GeV, using the initial-state radiation technique. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 951  fb−1. The accuracy of the cross section measurement is increased by a factor of 2 over the first Belle study. We perform the first angular analysis of the e+e−→D*±D*∓ process and decompose this exclusive cross section into three components corresponding to the D* helicities.

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Phys. Rev. D 97, 012002– Published 10 January, 2018
  • Received 28 July 2017
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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 to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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