Studies of B and B_s Meson Leptonic Decays with NRQCD Bottom and HISQ Light/Strange Quarks

2011/10/26 by J. Shigemitsu, Junko Shigemitsu, Heechang Na +12
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph

paper · pdf · doi:10.48550/arxiv.1110.5783

7 pages and 5 figures. Contribution to the XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 2011, Squaw Valley, Lake Tahoe, California

arxiv created 2011/10/26 · openalex publication_date 2011/10/26 · arxiv updated 2011/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a progress report on new calculations of B and B_s meson decay constants employing NRQCD heavy and HISQ light valence quarks and using MILC N_f = 2+1 AsqTad lattices. Bare quark masses have been retuned in accord with HPQCD's new r₁ scale. We find significant reductions in discretization effects compared to previous calculations with AsqTad light valence quarks. Matching of the NRQCD/HISQ heavy-light axial vector current is carried out at one-loop order including all relevant dimension 4 current corrections.

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