https://doi.org/10.1140/epjc/s10052-020-8156-7
Review
Averages of b-hadron, c-hadron, and
-lepton properties as of 2018
Heavy Flavor Averaging Group (HFLAV)
1
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
2
University of Louisville, Louisville, KY, USA
3
LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France
4
University of Bonn, Bonn, Germany
5
School of Physics and Astronomy, Queen Mary University of London, London, UK
6
H. Niewodniczanski Institute of Nuclear Physics, Kraków, Poland
7
INFN Sezione di Ferrara, Ferrara, Italy
8
School of Physics and Astronomy, Monash University, Melbourne, Australia
9
School of Physics and Astronomy, University of Manchester, Manchester, UK
10
Department of Physics, University of Warwick, Coventry, UK
11
Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
12
Niigata University, Niigata, Japan
13
Nara Women’s University, Nara, Japan
14
European Organization for Nuclear Research (CERN), Geneva, Switzerland
15
Ludwig-Maximilians-University, Munich, Germany
16
Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
17
Institute of High Energy Physics, 100049, Beijing, People’s Republic of China
18
University of Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China
19
Scuola Normale Superiore, Pisa, Italy
20
INFN Sezione di Pisa, Pisa, Italy
21
H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK
22
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
23
Imperial College London, London, UK
24
Università di Bari Aldo Moro, Bari, Italy
25
INFN Sezione di Bari, Bari, Italy
26
University of Victoria, Victoria, BC, Canada
27
Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
28
Institute of High Energy Physics, Vienna, Austria
29
University of Cincinnati, Cincinnati, OH, USA
30
Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia
31
Novosibirsk State University, Novosibirsk, Russia
32
Tel Aviv University, Tel Aviv, Israel
33
INFN Sezione di Trieste, Trieste, Italy
34
School of Physics, University of Melbourne, Melbourne, VIC, Australia
35
Indiana University, Bloomington, IN, USA
36
University of Florida, Gainesville, FL, USA
Received:
5
May
2020
Accepted:
13
June
2020
Published online:
10
March
2021
This paper reports world averages of measurements of b-hadron, c-hadron, and -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,
violation parameters, parameters of semileptonic decays, and Cabibbo–Kobayashi–Maskawa matrix elements.
© The Author(s) 2021
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