A likelihood-level combined fit of LHCb- and Belle II-like B→D(*)τν data, with shared form-factor nuisance parameters, is more sensitive and less biased than post-fit combinations of independent fits.
Update of |Vcb| from the ¯B→ D∗ℓ ¯ν form factor at zero recoil with three-flavor lat- tice QCD
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Joint LHCb--Belle II Prospects to Constrain New Physics in $B\to D^{(*)}\tau\nu$
A likelihood-level combined fit of LHCb- and Belle II-like B→D(*)τν data, with shared form-factor nuisance parameters, is more sensitive and less biased than post-fit combinations of independent fits.