Combined exclusive |V_ub| and |V_cb|

LHCb published a measurement of |V_ub/V_cb|= from the partial rate for Λ_b→pμν normalized to Λ_b→Λ_cμν, [arXiv:1504.01568].
The published value, |V_ub/V_cb|=0.083±0.004_exp.±0.004_th. updated to the PDG2018 average for the Branching Fraction BF(Λ_c→p K π)=(6.28 ± 0.32)%, is

|V_ub/V_cb|=0.079±0.004_exp.±0.004_th.

The result of a combined fit using as input only the exclusive |V_ub| and |V_cb| measurements, with the |V_ub/V_cb| measurement from LHCb gives the following results

|V_ub|=(3.49 ±0.13)x10^-3
|V_cb|=(39.25 ±0.56)x10^-3

the correlation is ρ=0.14, with a fit P(χ²)=7.7%. In this combination the uncertainties are considered uncorrelated.
The result of the fit is shown here .C, .pdf, .png.