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B-meson semileptonic form factors on (2+1+1)-flavor HISQ ensembles

Gelzer, Z. ; DeTar, C. ; El-Khadra, A.X. ; Gámiz, E. ; Gottlieb, S. ; Kronfeld, A. ; Liu, Y. ; Meurice, Y. ; Simone, J.N. ; Toussaint, D. ; et al ( May 2020 , 37th International Symposium on Lattice Field Theory (Lattice 2019))

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B- and D-meson leptonic decay constants and quark masses from four-flavor lattice QCD

TUMQCD and Fermilab Lattice and MILC Collaborations: Bazavov, A. ; Bernard, C ; Brambilla, N. ; Brown, N. ; DeTar, C. ; El Khadra, A.X. ; Gámiz, E. ; Gottlieb, S. ; Heller, U.M. ; Komijani, J. ; et al ( January 2019 , 13th Conference on the Intersections of Particle and Nuclear Physics)

We describe a recent lattice-QCD calculation of the leptonic decay con- stants of heavy-light pseudoscalar mesons containing charm and bottom quarks and of the masses of the up, down, strange, charm, and bottom quarks. Results for these quantities are of the highest precision to date. Calculations use 24 isospin-symmetric ensembles of gauge-field configura- tions with six different lattice spacings as small as approximately 0.03 fm and several values of the light quark masses down to physical values of the average up- and down-sea-quark masses. We use the highly-improved staggered quark (HISQ) formulation for valence and sea quarks, includ- ing the bottom quark. The analysis employs heavy-quark effective theory (HQET). A novel HQET method is used in the determination of the quark masses.
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Semileptonic B -meson decays to light pseudoscalar mesons on the HISQ ensembles

https://doi.org/10.1051/epjconf/201817513024

Gelzer, Zechariah ; Bernard, C. ; Tar, C. De ; El-Khadra, AX ; Gámiz, E. ; Gottlieb, Steven ; Kronfeld, Andreas S. ; Liu, Yuzhi ; Meurice, Y. ; Simone, J.N. ; et al ( January 2018 , EPJ Web of Conferences)

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