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Production of the excited charm mesons D 1 and D 2* at HERA

  • H. Abramowicz
  • , I. Abt
  • , L. Adamczyk
  • , M. Adamus
  • , R. Aggarwal
  • , S. Antonelli
  • , P. Antonioli
  • , A. Antonov
  • , M. Arneodo
  • , O. Arslan
  • , V. Aushev
  • , Y. Aushev
  • , O. Bachynska
  • , A. Bamberger
  • , A. N. Barakbaev
  • , G. Barbagli
  • , G. Bari
  • , F. Barreiro
  • , N. Bartosik
  • , D. Bartsch
  • M. Basile, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Bertolin, S. Bhadra, M. Bindi, C. Blohm, V. Bokhonov, T. Bołd, K. Bondarenko, E. G. Boos, K. Borras, D. Boscherini, D. Bot, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, A. Bruni, G. Bruni, B. Brzozowska, P. J. Bussey, B. Bylsma, A. Caldwell, M. Capua, R. Carlin, C. D. Catterall, S. Chekanov, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, A. M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, G. D'Agostini, F. Dal Corso, J. del Peso, R. K. Dementiev, S. De Pasquale, M. Derrick, R. C.E. Devenish, D. Dobur, B. A. Dolgoshein, G. Dolinska, A. T. Doyle, V. Drugakov, L. S. Durkin, S. Dusini, Y. Eisenberg, P. F. Ermolov, A. Eskreys, S. Fang, S. Fazio, J. Ferrando, M. I. Ferrero, J. Figiel, B. Foster, G. Gach, A. Galas, E. Gallo, A. Garfagnini, A. Geiser, I. Gialas, A. Gizhko, L. K. Gladilin, D. Gladkov, C. Glasman, O. Gogota, Yu A. Golubkov, P. Göttlicher, I. Grabowska-Bołd, J. Grebenyuk, I. Gregor, G. Grigorescu, G. Grzelak, O. Gueta, M. Guzik, C. Gwenlan, T. Haas, W. Hain, R. Hamatsu, J. C. Hart, H. Hartmann, G. Hartner, E. Hilger, D. Hochman, R. Hori, A. Hüttmann, Z. A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, H. P. Jakob, F. Januschek, T. W. Jones, M. Jüngst, I. Kadenko, B. Kahle, S. Kananov, T. Kanno, U. Karshon, F. Karstens, I. I. Katkov, M. Kaur, P. Kaur, A. Keramidas, L. A. Khein, J. Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, U. Klein, E. Koffeman, N. Kondrashova, O. Kononenko, P. Kooijman, Ie Korol, I. A. Korzhavina, A. Kotański, U. Kötz, H. Kowalski, O. Kuprash, M. Kuze, A. Lee, B. B. Levchenko, A. Levy*, V. Libov, S. Limentani, T. Y. Ling, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, K. R. Long, A. Longhin, D. Lontkovskyi, O. Yu Lukina, J. Maeda, S. Magill, I. Makarenko, J. Malka, R. Mankel, A. Margotti, G. Marini, J. F. Martin, A. Mastroberardino, M. C.K. Mattingly, I. A. Melzer-Pellmann, S. Mergelmeyer, S. Miglioranzi, F. Mohamad Idris, V. Monaco, A. Montanari, J. D. Morris, K. Mujkic, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, A. Nigro, Y. Ning, T. Nobe, D. Notz, R. J. Nowak, A. E. Nuncio-Quiroz, B. Y. Oh, N. Okazaki, K. Olkiewicz, Yu Onishchuk, K. Papageorgiu, A. Parenti, E. Paul, J. M. Pawlak, B. Pawlik, P. G. Pelfer, A. Pellegrino, W. Perlański, H. Perrey, K. Piotrzkowski, P. Pluciński, N. S. Pokrovskiy, A. Polini, A. S. Proskuryakov, M. Przybycień, A. Raval, D. D. Reeder, B. Reisert, Z. Ren, J. Repond, Y. D. Ri, A. Robertson, P. Roloff, I. Rubinsky, M. Ruspa, R. Sacchi, U. Samson, G. Sartorelli, A. A. Savin, D. H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W. B. Schmidke, U. Schneekloth, V. Schönberg, T. Schörner-Sadenius, J. Schwartz, F. Sciulli, L. M. Shcheglova, R. Shehzadi, S. Shimizu, I. Singh, I. O. Skillicorn, W. Słomiński, W. H. Smith, V. Sola, A. Solano, D. Son, V. Sosnovtsev, A. Spiridonov, H. Stadie, L. Stanco, N. Stefaniuk, A. Stern, T. P. Stewart, A. Stifutkin, P. Stopa, S. Suchkov, G. Susinno, L. Suszycki, J. Sztuk-Dambietz, D. Szuba, J. Szuba, A. D. Tapper, E. Tassi, J. Terrón, T. Theedt, H. Tiecke, K. Tokushuku, J. Tomaszewska, V. Trusov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, M. Vázquez, A. Verbytskyi, O. Viazlo, N. N. Vlasov, R. Walczak, W. A.T. Wan Abdullah, J. J. Whitmore, K. Wichmann, L. Wiggers, M. Wing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, A. G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, O. Zabiegalov, A. F. Zarnecki, L. Zawiejski, O. Zenaiev, W. Zeuner, B. O. Zhautykov, N. Zhmak, A. Zichichi, Z. Zolkapli, D. S. Zotkin
*Corresponding author for this work
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Faculty of Physics and Applied Computer Science
  • AGH University of Krakow
  • National Centre for Nuclear Research
  • Physics Department
  • Panjab University
  • National Institute for Nuclear Physics
  • Moscow Engineering Physics Institute
  • University of Eastern Piedmont
  • University of Bonn
  • NASU - Institute of Nuclear Research
  • Department of Nuclear Physics
  • Kyiv National Taras Shevchenko University
  • German Electron Synchrotron
  • University of Freiburg
  • Ministry of Education and Science of the Republic of Kazakhstan
  • Universidad Autónoma de Madrid
  • York University Toronto
  • University of Wisconsin-Madison
  • Dipartimento di Fisica dell'Università
  • University of Padua
  • Department of Physics
  • Ohio State University
  • Faculty of Physics
  • University of Warsaw
  • School of Physics and Astronomy
  • University of Glasgow
  • Dipartimento di Fisica
  • University of Calabria
  • Argonne National Laboratory
  • Institute of Nuclear Physics Polish Academy of Sciences
  • University of Oxford
  • Department of Physics
  • McGill University
  • University of Turin
  • University of Rome La Sapienza
  • Skobeltsyn Institute of Nuclear Physics
  • Lomonosov Moscow State University
  • Department of Particle Physics and Astrophysics
  • Weizmann Institute of Science
  • Department of Engineering in Management and Finance
  • University of the Aegean
  • University of Amsterdam
  • Raymond and Beverly Sackler Faculty of Exact Sciences
  • Tel Aviv University
  • Department of Physics
  • Tokyo Metropolitan University
  • Rutherford Appleton Laboratory
  • Department of Physics
  • The University of Tokyo
  • University of Malaya
  • Polytechnic University Japan
  • Department of Physics
  • Institute of Science Tokyo
  • Department of Physics and Astronomy
  • University College London
  • Chonnam National University
  • Institut für Experimentalphysik
  • University of Hamburg
  • Department of Physics
  • Jagiellonian University in Kraków
  • High Energy Nuclear Physics Group
  • Imperial College London
  • Department of Physics
  • University of Toronto
  • Andrews University
  • University of Bristol
  • High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
  • Nevis Laboratory
  • Columbia University
  • Department of Physics
  • Pennsylvania State University
  • Institut de Physique Nucléaire
  • Université catholique de Louvain
  • Center for High Energy Physics
  • Kyungpook National University
  • Faculty of General Education
  • Meiji Gakuin University

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The production of the excited charm mesons D 1(2420) and D2*(2460) in ep collisions has been measured with the ZEUS detector at HERA using an integrated luminosity of 373pb -1. The masses of the neutral and charged states, the widths of the neutral states, and the helicity parameter of D 1(2420) 0 were determined and compared with other measurements and with theoretical expectations. The measured helicity parameter of the D10 allows for some mixing of S- and D-waves in its decay to D *±π Π. The result is also consistent with a pure D-wave decay. Ratios of branching fractions of the two decay modes of the D2*(2460)0 and D2*(2460)± states were measured and compared with previous measurements. The fractions of charm quarks hadronising into D 1 and D2* were measured and are consistent with those obtained in e +e - annihilations.

Original languageEnglish
Pages (from-to)229-254
Number of pages26
JournalNuclear Physics B
Volume866
Issue number3
DOIs
StatePublished - 21 Jan 2013

Funding

FundersFunder number
UK Research and Innovation53706
Science and Technology Facilities CouncilST/H001026/1, ST/K001426/1, ST/H001026/2

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