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FLAG Review 2019: Flavour Lattice Averaging Group (FLAG)

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  • S. Aoki
  • Y. Aoki
  • D. Becirevic
  • T. Blum
  • G. Colangelo
  • S. Collins
  • M. Della Morte
  • P. Dimopoulos
  • S. Dürr
  • H. Fukaya
  • M. Golterman
  • Steven Gottlieb
  • R. Gupta
  • S. Hashimoto
  • U. M. Heller
  • G. Herdoiza
  • A. Jüttner
  • T. Kaneko
  • C. -J. D. Lin
  • E. Lunghi
  • R. Mawhinney
  • A. Nicholson
  • T. Onogi
  • C. Pena
  • A. Ramos
  • S. R. Sharpe
  • J. N. Simone
  • S. Simula
  • R. Sommer
  • R. Van De Water
  • A. Vladikas
  • U. Wenger
  • H. Wittig

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https://link.springer.com/article/10.1140/epjc/s10052-019-7354-7#article-info
Original languageEnglish
Article number113
JournalEuropean Physical Journal C
Volume80
DOIs
Publication statusPublished - 11 Feb 2020

Abstract

We review lattice results related to pion, kaon, D-meson, B-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. More specifically, we report on the determination of the light-quark masses, the form factor f+(0) arising in the semileptonic K→π transition at zero momentum transfer, as well as the decay constant ratio fK/fπ and its consequences for the CKM matrix elements Vus and Vud. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of SU(2)L×SU(2)R and SU(3)L×SU(3)R Chiral Perturbation Theory. We review the determination of the BK parameter of neutral kaon mixing as well as the additional four B parameters that arise in theories of physics beyond the Standard Model. For the heavy-quark sector, we provide results for mc and mb as well as those for D- and B-meson decay constants, form factors, and mixing parameters. These are the heavy-quark quantities most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. We review the status of lattice determinations of the strong coupling constant αs. Finally, in this review we have added a new section reviewing results for nucleon matrix elements of the axial, scalar and tensor bilinears, both isovector and flavor diagonal.

    Research areas

  • hep-lat, hep-ph

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