Journal article

Observation of the production of a W boson in association with a single charm quark.

  • Aaltonen T Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
  • Amerio S Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy.
  • Amidei D University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Anastassov A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Annovi A Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Antos J Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  • Apollinari G Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Appel JA Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Arisawa T Waseda University, Tokyo 169, Japan.
  • Artikov A Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Asaadi J Texas A&M University, College Station, Texas 77843, USA.
  • Ashmanskas W Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Auerbach B Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Aurisano A Texas A&M University, College Station, Texas 77843, USA.
  • Azfar F University of Oxford, Oxford OX1 3RH, United Kingdom.
  • Badgett W Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bae T Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Barbaro-Galtieri A Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Barnes VE Purdue University, West Lafayette, Indiana 47907, USA.
  • Barnett BA The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  • Barria P Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Siena, I-27100 Pavia, Italy.
  • Bartos P Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  • Bauce M Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Bedeschi F Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy.
  • Behari S Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bellettini G Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Pisa, I-27100 Pavia, Italy.
  • Bellinger J University of Wisconsin, Madison, Wisconsin 53706, USA.
  • Benjamin D Duke University, Durham, North Carolina 27708, USA.
  • Beretvas A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bhatti A The Rockefeller University, New York, New York 10065, USA.
  • Bland KR Baylor University, Waco, Texas 76798, USA.
  • Blumenfeld B The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  • Bocci A Duke University, Durham, North Carolina 27708, USA.
  • Bodek A University of Rochester, Rochester, New York 14627, USA.
  • Bortoletto D Purdue University, West Lafayette, Indiana 47907, USA.
  • Boudreau J University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
  • Boveia A Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Brigliadori L Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
  • Bromberg C Michigan State University, East Lansing, Michigan 48824, USA.
  • Brucken E Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
  • Budagov J Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Burkett K Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Busetto G Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Bussey P Glasgow University, Glasgow G12 8QQ, United Kingdom.
  • Butti P Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Siena, I-27100 Pavia, Italy.
  • Buzatu A Institute of Particle Physics: McGill University, Montréal, Québec H3A 2T8, Canada; Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada; University of Toronto, Toronto, Ontario M5S 1A7, Canada; and TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.
  • Calamba A Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Camarda S Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain.
  • Campanelli M University College London, London WC1E 6BT, United Kingdom.
  • Canelli F Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA and Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Carls B University of Illinois, Urbana, Illinois 61801, USA.
  • Carlsmith D University of Wisconsin, Madison, Wisconsin 53706, USA.
  • Carosi R Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy.
  • Carrillo S University of Florida, Gainesville, Florida 32611, USA.
  • Casal B Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain.
  • Casarsa M Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-34100 Trieste, Italy.
  • Castro A Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
  • Catastini P Harvard University, Cambridge, Massachusetts 02138, USA.
  • Cauz D Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-34100 Trieste, Italy.
  • Cavaliere V University of Illinois, Urbana, Illinois 61801, USA.
  • Cavalli-Sforza M Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain.
  • Cerri A Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Cerrito L University College London, London WC1E 6BT, United Kingdom.
  • Chen YC Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China.
  • Chertok M University of California, Davis, Davis, California 95616, USA.
  • Chiarelli G Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy.
  • Chlachidze G Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Cho K Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Chou JP Harvard University, Cambridge, Massachusetts 02138, USA.
  • Chokheli D Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Clark A University of Geneva, CH-1211 Geneva 4, Switzerland.
  • Clarke C Wayne State University, Detroit, Michigan 48201, USA.
  • Convery ME Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Conway J University of California, Davis, Davis, California 95616, USA.
  • Corbo M Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Cordelli M Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Cox CA University of California, Davis, Davis, California 95616, USA.
  • Cox DJ University of California, Davis, Davis, California 95616, USA.
  • Cremonesi M Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy.
  • Cuevas J Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain.
  • Culbertson R Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • d'Ascenzo N Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Datta M Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Demortier L The Rockefeller University, New York, New York 10065, USA.
  • Deninno M Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
  • Devoto F Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
  • d'Errico M Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Di Canto A Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Pisa, I-27100 Pavia, Italy.
  • Di Ruzza B Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Dittmann JR Baylor University, Waco, Texas 76798, USA.
  • D'Onofrio M University of Liverpool, Liverpool L69 7ZE, United Kingdom.
  • Donati S Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Pisa, I-27100 Pavia, Italy.
  • Dorigo M Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-34100 Trieste, Italy.
  • Driutti A Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-34100 Trieste, Italy.
  • Ebina K Waseda University, Tokyo 169, Japan.
  • Edgar R University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Elagin A Texas A&M University, College Station, Texas 77843, USA.
  • Erbacher R University of California, Davis, Davis, California 95616, USA.
  • Errede S University of Illinois, Urbana, Illinois 61801, USA.
  • Esham B University of Illinois, Urbana, Illinois 61801, USA.
  • Eusebi R Texas A&M University, College Station, Texas 77843, USA.
  • Farrington S University of Oxford, Oxford OX1 3RH, United Kingdom.
  • Fernández Ramos JP Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain.
  • Field R University of Florida, Gainesville, Florida 32611, USA.
  • Flanagan G Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Forrest R University of California, Davis, Davis, California 95616, USA.
  • Franklin M Harvard University, Cambridge, Massachusetts 02138, USA.
  • Freeman JC Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Funakoshi Y Waseda University, Tokyo 169, Japan.
  • Garfinkel AF Purdue University, West Lafayette, Indiana 47907, USA.
  • Garosi P Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Siena, I-27100 Pavia, Italy.
  • Gerberich H University of Illinois, Urbana, Illinois 61801, USA.
  • Gerchtein E Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Giagu S Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy.
  • Giakoumopoulou V University of Athens, 157 71 Athens, Greece.
  • Gibson K University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
  • Ginsburg CM Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Giokaris N University of Athens, 157 71 Athens, Greece.
  • Giromini P Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Giurgiu G The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  • Glagolev V Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Glenzinski D Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Gold M University of New Mexico, Albuquerque, New Mexico 87131, USA.
  • Goldin D Texas A&M University, College Station, Texas 77843, USA.
  • Goldschmidt N University of Florida, Gainesville, Florida 32611, USA.
  • Golossanov A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Gomez G Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain.
  • Gomez-Ceballos G Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Goncharov M Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • González López O Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain.
  • Gorelov I University of New Mexico, Albuquerque, New Mexico 87131, USA.
  • Goshaw AT Duke University, Durham, North Carolina 27708, USA.
  • Goulianos K The Rockefeller University, New York, New York 10065, USA.
  • Gramellini E Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
  • Grinstein S Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain.
  • Grosso-Pilcher C Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Group RC Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA and University of Virginia, Charlottesville, Virginia 22906, USA.
  • Guimaraes da Costa J Harvard University, Cambridge, Massachusetts 02138, USA.
  • Hahn SR Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Han JY University of Rochester, Rochester, New York 14627, USA.
  • Happacher F Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Hara K University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  • Hare M Tufts University, Medford, Massachusetts 02155, USA.
  • Harr RF Wayne State University, Detroit, Michigan 48201, USA.
  • Harrington-Taber T Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Hatakeyama K Baylor University, Waco, Texas 76798, USA.
  • Hays C University of Oxford, Oxford OX1 3RH, United Kingdom.
  • Heinrich J University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
  • Herndon M University of Wisconsin, Madison, Wisconsin 53706, USA.
  • Hocker A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Hopkins W Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Hou S Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China.
  • Hughes RE The Ohio State University, Columbus, Ohio 43210, USA.
  • Hurwitz M Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Husemann U Yale University, New Haven, Connecticut 06520, USA.
  • Huston J Michigan State University, East Lansing, Michigan 48824, USA.
  • Introzzi G Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and INFN Pavia and University of Pavia, I-27100 Pavia, Italy.
  • Iori M Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy and Sapienza Università di Roma, I-00185 Roma, Italy.
  • Ivanov A University of California, Davis, Davis, California 95616, USA.
  • James E Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Jang D Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Jayatilaka B Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Jeon EJ Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Jindariani S Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Jones M Purdue University, West Lafayette, Indiana 47907, USA.
  • Joo KK Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Jun SY Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Junk TR Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Kambeitz M Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  • Kamon T Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea and Texas A&M University, College Station, Texas 77843, USA.
  • Karchin PE Wayne State University, Detroit, Michigan 48201, USA.
  • Kasmi A Baylor University, Waco, Texas 76798, USA.
  • Kato Y Osaka City University, Osaka 588, Japan.
  • Ketchum W Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Keung J University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
  • Kilminster B Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Kim DH Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Kim HS Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Kim JE Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Kim MJ Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Kim SB Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Kim SH University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  • Kim YK Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Kim YJ Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Kimura N Waseda University, Tokyo 169, Japan.
  • Kirby M Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Klimenko S University of Florida, Gainesville, Florida 32611, USA.
  • Knoepfel K Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Kondo K Waseda University, Tokyo 169, Japan.
  • Kong DJ Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Konigsberg J University of Florida, Gainesville, Florida 32611, USA.
  • Kotwal AV Duke University, Durham, North Carolina 27708, USA.
  • Kreps M Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  • Kroll J University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
  • Krop D Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Kruse M Duke University, Durham, North Carolina 27708, USA.
  • Kuhr T Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  • Kurata M University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  • Kwang S Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Laasanen AT Purdue University, West Lafayette, Indiana 47907, USA.
  • Lammel S Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Lancaster M University College London, London WC1E 6BT, United Kingdom.
  • Lannon K The Ohio State University, Columbus, Ohio 43210, USA.
  • Latino G Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Siena, I-27100 Pavia, Italy.
  • Lee HS Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Lee JS Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Leone S Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy.
  • Lewis JD Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Limosani A Duke University, Durham, North Carolina 27708, USA.
  • Lipeles E University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
  • Liu H University of Virginia, Charlottesville, Virginia 22906, USA.
  • Liu Q Purdue University, West Lafayette, Indiana 47907, USA.
  • Liu T Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Lockwitz S Yale University, New Haven, Connecticut 06520, USA.
  • Loginov A Yale University, New Haven, Connecticut 06520, USA.
  • Lucchesi D Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Lueck J Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  • Lujan P Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Lukens P Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Lungu G The Rockefeller University, New York, New York 10065, USA.
  • Lys J Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Lysak R Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  • Madrak R Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Maestro P Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and University of Siena, I-27100 Pavia, Italy.
  • Malik S The Rockefeller University, New York, New York 10065, USA.
  • Manca G University of Liverpool, Liverpool L69 7ZE, United Kingdom.
  • Manousakis-Katsikakis A University of Athens, 157 71 Athens, Greece.
  • Margaroli F Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy.
  • Martínez M Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain.
  • Matera K University of Illinois, Urbana, Illinois 61801, USA.
  • Mattson ME Wayne State University, Detroit, Michigan 48201, USA.
  • Mazzacane A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Mazzanti P Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
  • McNulty R University of Liverpool, Liverpool L69 7ZE, United Kingdom.
  • Mehta A University of Liverpool, Liverpool L69 7ZE, United Kingdom.
  • Mehtala P Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
  • Mesropian C The Rockefeller University, New York, New York 10065, USA.
  • Miao T Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Mietlicki D University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Mitra A Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China.
  • Miyake H University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  • Moed S Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Moggi N Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
  • Moon CS Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Moore R Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Morello MJ Istituto Nazionale di Fisica Nucleare Pisa, I-27100 Pavia, Italy and Scuola Normale Superiore, I-56127 Pisa, Italy.
  • Mukherjee A Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Muller T Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  • Murat P Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Mussini M Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
  • Nachtman J Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Nagai Y University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  • Naganoma J Waseda University, Tokyo 169, Japan.
  • Nakano I Okayama University, Okayama 700-8530, Japan.
  • Napier A Tufts University, Medford, Massachusetts 02155, USA.
  • Nett J Texas A&M University, College Station, Texas 77843, USA.
  • Neu C University of Virginia, Charlottesville, Virginia 22906, USA.
  • Nigmanov T University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
  • Nodulman L Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Noh SY Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea.
  • Norniella O University of Illinois, Urbana, Illinois 61801, USA.
  • Oakes L University of Oxford, Oxford OX1 3RH, United Kingdom.
  • Oh SH Duke University, Durham, North Carolina 27708, USA.
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  • 2014-08-29
Published in:
  • Physical review letters. - 2013
English The first observation of the production of a W boson with a single charm quark (c) jet in pp[over ¯] collisions at √s=1.96  TeV is reported. The analysis uses data corresponding to 4.3  fb(-1), recorded with the CDF II detector at the Fermilab Tevatron. Charm quark candidates are selected through the identification of an electron or muon from charm-hadron semileptonic decay within a hadronic jet, and a Wc signal is observed with a significance of 5.7 standard deviations. The production cross section σ(Wc)(p(Tc)>20  GeV/c,|η(c)|<1.5)×B(W→ℓν) is measured to be 13.6(-3.1)(+3.4)  pb and is in agreement with theoretical expectations. From this result the magnitude of the quark-mixing matrix element V(cs) is derived, |V(cs)|=1.08±0.16 along with a lower limit of |V(cs)|>0.71 at the 95% confidence level, assuming that the Wc production through c to s quark coupling is dominant.
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