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High-precision measurement of the W boson mass with the CDF II detector

Journal Article · · Science
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  1. Univ. of Helsinki (Finland); CDF Collaboration. et al.
  2. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy.; University of Padova, I-35131 Padova, Italy.
  3. University of Michigan, Ann Arbor, MI 48109, USA.
  4. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA.
  5. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  6. Comenius University, 842 48 Bratislava, Slovakia.; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  7. Waseda University, Tokyo 169, Japan.
  8. Joint Institute for Nuclear Research, Dubna RU-141980, Russia.
  9. Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA.
  10. Argonne National Laboratory, Argonne, IL 60439, USA.
  11. University of Oxford, Oxford OX1 3RH, UK.
  12. 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.
  13. Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
  14. Purdue University, West Lafayette, IN 47907, USA.
  15. The Johns Hopkins University, Baltimore, MD 21218, USA.
  16. Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.; University of Siena, I-53100 Siena, Italy.
  17. Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.
  18. Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.; University of Pisa, I-56126 Pisa, Italy.
  19. University of Wisconsin-Madison, Madison, WI 53706, USA.
  20. Duke University, Durham, NC 27708, USA.
  21. The Rockefeller University, New York, NY 10065, USA.
  22. Baylor University, Waco, TX 76798, USA.
  23. University of Rochester, Rochester, NY 14627, USA.
  24. University of Pittsburgh, Pittsburgh, PA 15260, USA.
  25. Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA.
  26. Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.; University of Bologna, I-40127 Bologna, Italy.
  27. Michigan State University, East Lansing, MI 48824, USA.
  28. Division of High Energy Physics, Department of Physics, University of Helsinki, FIN-00014, Helsinki, Finland.; Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
  29. Glasgow University, Glasgow G12 8QQ, UK.
  30. Carnegie Mellon University, Pittsburgh, PA 15213, USA.
  31. Institut de Fisica d’Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain.
  32. University College London, London WC1E 6BT, UK.
  33. University of Illinois, Urbana, IL 61801, USA.
  34. University of Florida, Gainesville, FL 32611, USA.
  35. Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain.
  36. Istituto Nazionale di Fisica Nucleare Trieste, I-34127 Trieste, Italy.
  37. Harvard University, Cambridge, MA 02138, USA.
  38. Istituto Nazionale di Fisica Nucleare Trieste, I-34127 Trieste, Italy.; Gruppo Collegato di Udine, I-33100 Udine, Italy.; University of Udine, I-33100 Udine, Italy.
  39. Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China.
  40. University of California, Davis, Davis, CA 95616, USA.
  41. University of Geneva, CH-1211 Geneva 4, Switzerland.
  42. Wayne State University, Detroit, MI 48201, USA.
  43. Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
  44. University of Liverpool, Liverpool L69 7ZE, UK.
  45. Istituto Nazionale di Fisica Nucleare Trieste, I-34127 Trieste, Italy.; University of Trieste, I-34127 Trieste, Italy.
  46. Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain.
  47. Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy.
  48. National and Kapodistrian University of Athens, 157 71 Athens, Greece.
  49. University of New Mexico, Albuquerque, NM 87131, USA.
  50. Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  51. University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  52. Tufts University, Medford, MA 02155, USA.
  53. University of Pennsylvania, Philadelphia, PA 19104, USA.
  54. The Ohio State University, Columbus, OH 43210, USA.
  55. Yale University, New Haven, CT 06520, USA.
  56. Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.; Istituto Nazionale di Fisica Nucleare Pavia, I-27100 Pavia, Italy.; University of Pavia, I-27100 Pavia, Italy.
  57. Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy.; Sapienza Università di Roma, I-00185 Roma, Italy.
  58. Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
  59. Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA.; 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.
  60. Osaka City University, Osaka 558-8585, Japan.
  61. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA.; Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  62. Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.; Scuola Normale Superiore, I-56126 Pisa, Italy.
  63. Okayama University, Okayama 700-8530, Japan.
  64. University of California, Los Angeles, Los Angeles, CA 90024, USA.
  65. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA.; Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.
  66. Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia.
  67. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy.
+ Show Author Affiliations
The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics. The Higgs boson was the last missing component of the model. After observation of the Higgs boson, a measurement of the W boson mass provides a stringent test of the model. We measure the W boson mass, MW, using data corresponding to 8.8 inverse femtobarns of integrated luminosity collected in proton-antiproton collisions at a 1.96 tera–electron volt center-of-mass energy with the CDF II detector at the Fermilab Tevatron collider. A sample of approximately 4 million W boson candidates is used to obtain MW = 80,433.5 ± 6.4stat ± 6.9syst = 80,433.5 ± 9.4 MeV/c2, the precision of which exceeds that of all previous measurements combined (stat, statistical uncertainty; syst, systematic uncertainty; MeV, mega–electron volts; c, speed of light in a vacuum). This measurement is in significant tension with the standard model expectation.
Research Organization:
Carnegie Mellon Univ., Pittsburgh, PA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Rochester, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CDF Collaboration
Grant/Contract Number:
AC02-05CH11231; AC02-07CH11359; SC0008475; SC0010118
OSTI ID:
1861825
Alternate ID(s):
OSTI ID: 1894076
OSTI ID: 1906905
OSTI ID: 1907250
Report Number(s):
FERMILAB-PUB-22-254-PPD; oai:inspirehep.net:2064224
Journal Information:
Science, Journal Name: Science Journal Issue: 6589 Vol. 376; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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