Article

Averages of b-hadron, c-hadron, and $$\tau $$-lepton properties as of 2018

Y. AmhisUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, FranceSw. BanerjeeUniversity of Louisville, Louisville, KY, USAE. Ben-HaimLPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, FranceF. U. BernlochnerUniversity of Bonn, Bonn, GermanyM. BónaSchool of Physics and Astronomy, Queen Mary University of London, London, UKA. BożekH. Niewodniczanski Institute of Nuclear Physics, Kraków, PolandC. BozziINFN Sezione di Ferrara, Ferrara, ItalyJ. BrodzickaH. Niewodniczanski Institute of Nuclear Physics, Kraków, PolandM. ChrzaszczH. Niewodniczanski Institute of Nuclear Physics, Kraków, PolandJ. DingfelderUniversity of Bonn, Bonn, GermanyS. DuellUniversity of Bonn, Bonn, GermanyU. EgedeSchool of Physics and Astronomy, Monash University, Melbourne, AustraliaM. GersabeckSchool of Physics and Astronomy, University of Manchester, Manchester, UKT. GershonDepartment of Physics, University of Warwick, Coventry, UKP. GoldenzweigInstitut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, GermanyK. HayasakaNiigata University, Niigata, JapanH. HayashiiNara Women's University, Nara, JapanD. JohnsonEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandM. KenzieDepartment of Physics, University of Warwick, Coventry, UKT. KuhrLudwig-Maximilians-University, Munich, GermanyO. LeroyAix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, FranceHaobo LiInstitute of High Energy Physics, Beijing, 100049, People's Republic of ChinaA. LusianiScuola Normale Superiore, Pisa, ItalyH. MaInstitute of High Energy Physics, Beijing, 100049, People's Republic of ChinaK. MiyabayashiNara Women's University, Nara, JapanP. NaikH.H. Wills Physics Laboratory, University of Bristol, Bristol, UKT. NanutInstitute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandM. PatelImperial College London, London, UKA. PompiliUniversità di Bari Aldo Moro, Bari, ItalyM. RamaINFN Sezione di Pisa, Pisa, ItalyJ. M. RoneyUniversity of Victoria, Victoria, BC, CanadaM. RotondoLaboratori Nazionali dell'INFN di Frascati, Frascati, ItalyO. SchneiderInstitute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandC. SchwandaInstitute of High Energy Physics, Vienna, AustriaA. J. SchwartzUniversity of Cincinnati, Cincinnati, OH, USAB. ShwartzBudker Institute of Nuclear Physics (SB RAS), Novosibirsk, RussiaJ. SerranoAix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, FranceA. SofferTel Aviv University, Tel Aviv, IsraelD. TonelliINFN Sezione di Trieste, Trieste, ItalyP. UrquijoSchool of Physics, University of Melbourne, Melbourne, VIC, AustraliaR. Van KootenIndiana University, Bloomington, IN, USAJ. YeltonUniversity of Florida, Gainesville, FL, USA

2021en

ABI

Abstract

Abstract This paper reports world averages of measurements of b -hadron, c -hadron, and $$\tau $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>τ</mml:mi> </mml:math> -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, $$C\!P$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>C</mml:mi> <mml:mspace/> <mml:mi>P</mml:mi> </mml:mrow> </mml:math> violation parameters, parameters of semileptonic decays, and Cabibbo–Kobayashi–Maskawa matrix elements.

Identifiers

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

Citations and references

Cited by 10 references

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