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Averages of b-hadron, c-hadron, and τ-lepton properties as of 2018 Heavy Flavor Averaging Group (HFLAV)

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 81, Issue 3, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-020-8156-7

Keywords

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Funding

  1. Australian Research Council (Australia)
  2. Ministry of Science and Technology (China)
  3. National Natural Science Foundation (China)
  4. Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (China)
  5. CNRS/IN2P3 (France)
  6. Deutsche Forschungsgemeinschaft (Germany)
  7. German-Israeli Foundation for Scientific research and Development (Israel)
  8. Israel Science Foundation (Israel)
  9. Ministry of Science and Technology (Israel)
  10. USIsrael Binational Science Fund (Israel)
  11. Istituto Nazionale di Fisica Nucleare (Italy)
  12. Ministry of Education, Culture, Sports, Science and Technology (Japan)
  13. Japan Society for the Promotion of Science (Japan)
  14. National Agency for Academic Exchange (Poland)
  15. Ministry of Science and Higher Education (Poland)
  16. National Science Centre (Poland)
  17. Swiss National Science Foundation (Switzerland)
  18. Science and Technology Facilities Council (UK)
  19. Department of Energy (USA)

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This paper reports world averages of measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavour Averaging Group using results available through September 2018. Adjustments are made to common input parameters used in various analyses to common values, taking known correlations into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabibbo-Kobayashi-Maskawa matrix elements.
This paper reports world averages of measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavour Averaging Group using results available through September 2018. In rare cases, significant results obtained several months later are also used. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabibbo-Kobayashi-Maskawa matrix elements.

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