Abstract
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 language | English |
|---|---|
| Article number | 226 |
| Number of pages | 326 |
| Journal | European Physical Journal C |
| Volume | 81 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 10 Mar 2021 |
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In: European Physical Journal C, Vol. 81, No. 3, 226, 10.03.2021.
Research output: Contribution to journal › Review Article › Research › peer-review
TY - JOUR
T1 - Averages of b-hadron, c-hadron, and τ -lepton properties as of 2018
T2 - Heavy Flavor Averaging Group (HFLAV)
AU - Amhis, Y.
AU - Banerjee, Sw
AU - Ben-Haim, E.
AU - Bernlochner, F. U.
AU - Bona, M.
AU - Bozek, A.
AU - Bozzi, C.
AU - Brodzicka, J.
AU - Chrzaszcz, M.
AU - Dingfelder, J.
AU - Duell, S.
AU - Egede, U.
AU - Gersabeck, M.
AU - Gershon, T.
AU - Goldenzweig, P.
AU - Hayasaka, K.
AU - Hayashii, H.
AU - Johnson, D.
AU - Kenzie, M.
AU - Kuhr, T.
AU - Leroy, O.
AU - Li, H. B.
AU - Lusiani, A.
AU - Ma, H. L.
AU - Miyabayashi, K.
AU - Naik, P.
AU - Nanut, T.
AU - Patel, M.
AU - Pompili, A.
AU - Rama, M.
AU - Roney, M.
AU - Rotondo, M.
AU - Schneider, O.
AU - Schwanda, C.
AU - Schwartz, A. J.
AU - Shwartz, B.
AU - Serrano, J.
AU - Soffer, A.
AU - Tonelli, D.
AU - Urquijo, P.
AU - Van Kooten, R.
AU - Yelton, J.
N1 - Funding Information: Members of HFLAV are supported by the following funding agencies: Australian Research Council (Australia); Ministry of Science and Technology, National Natural Science Foundation, Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (China); CNRS/IN2P3 (France); Deutsche Forschungsgemeinschaft (Germany); German-Israeli Foundation for Scientific research and Development, Israel Science Foundation, Ministry of Science and Technology, US-Israel Binational Science Fund (Israel); Istituto Nazionale di Fisica Nucleare (Italy); Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science (Japan); National Agency for Academic Exchange, Ministry of Science and Higher Education, National Science Centre (Poland); Swiss National Science Foundation (Switzerland); Science and Technology Facilities Council (UK); Department of Energy (USA). Funding Information: We are grateful for the strong support of the ATLAS, BABAR , Belle, BESIII, CLEO(c), CDF, CMS, D0 and LHCb collaborations, without whom this compilation of results and world averages would not have been possible. The success of these experiments in turn would not have been possible without the excellent operations of the BEPC-II, CESR, KEKB, LHC, PEP-II, and Tevatron accelerators. We also recognise the interplay between theoretical and experimental communities that has provided a stimulus for many of the measurements in this document. We thank the SLAC National Accelerator Laboratory for providing crucial computing resources and support to HFLAV in past years and CERN for taking this over from 2018. Our averages and this compilation have benefitted greatly from contributions to the Heavy Flavour Averaging Group from numerous individuals. In particular, we would like to thank Yinghui Guan for contributions to the charm physics chapter, and Paolo Gambino and Andreas Kronfeld for discussions regarding the averages in the semileptonic chapter. We also thank all past members of the HFLAV. We especially thank the following for their careful review of the text in preparing this paper for publication: G.?Cowan, F.?Muheim, U. Nierste, K.-F. Chen, Th.?Mannel, A.?El-Khadra, R.?Kowalewski, H.-Y.?Cheng, M.?Kreps, G.?Mohanty, G.?Hiller, M.?Charles, J.?Brod, M.?Jamin, K.?Moenig. Members of HFLAV are supported by the following funding agencies: Australian Research Council (Australia); Ministry of Science and Technology, National Natural Science Foundation, Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (China); CNRS/IN2P3 (France); Deutsche Forschungsgemeinschaft (Germany); German-Israeli Foundation for Scientific research and Development, Israel Science Foundation, Ministry of Science and Technology, US-Israel Binational Science Fund (Israel); Istituto Nazionale di Fisica Nucleare (Italy); Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science (Japan); National Agency for Academic Exchange, Ministry of Science and Higher Education, National Science Centre (Poland); Swiss National Science Foundation (Switzerland); Science and Technology Facilities Council (UK); Department of Energy (USA). Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/10
Y1 - 2021/3/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85108844702&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-020-8156-7
DO - 10.1140/epjc/s10052-020-8156-7
M3 - Review Article
AN - SCOPUS:85108844702
SN - 1434-6052
VL - 81
JO - European Physical Journal C
JF - European Physical Journal C
IS - 3
M1 - 226
ER -