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

Y. Amhis, Sw Banerjee, E. Ben-Haim, F. U. Bernlochner, M. Bona, A. Bozek, C. Bozzi, J. Brodzicka, M. Chrzaszcz, J. Dingfelder, S. Duell, U. Egede, M. Gersabeck, T. Gershon, P. Goldenzweig, K. Hayasaka, H. Hayashii, D. Johnson, M. Kenzie, T. KuhrO. Leroy, H. B. Li, A. Lusiani, H. L. Ma, K. Miyabayashi, P. Naik, T. Nanut, M. Patel, A. Pompili, M. Rama, M. Roney, M. Rotondo, O. Schneider, C. Schwanda, A. J. Schwartz, B. Shwartz, J. Serrano, A. Soffer, D. Tonelli, P. Urquijo, R. Van Kooten, J. Yelton

Research output: Contribution to journalReview articlepeer-review


This paper reports world averages of measurements of b-hadron, c-hadron, and τ-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.

Original languageEnglish
Article number226
JournalEuropean Physical Journal C
Issue number3
StatePublished - Mar 2021

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)


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