#### $\rho {}^{2}$ (form factor slope)

VALUE DOCUMENT ID TECN  COMMENT
 $\bf{ 1.17 \pm0.08}$ OUR AVERAGE
$1.16$ $\pm0.05$ $\pm0.07$ 1
 2020 AW
LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$1.23$ $\pm0.17$ $\pm0.05$ 2
 2020 E
LHCB ${{\mathit p}}{{\mathit p}}$ at 7,8 TeV
 1 The ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{*-}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ decay is reconstructed through the decays of ${{\mathit D}_{{s}}^{*-}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit \gamma}}$ , ${{\mathit D}_{{s}}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$ .
 2 The ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{*-}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ decay is reconstructed inclusively without ${{\mathit \gamma}}$ from the decays of ${{\mathit D}_{{s}}^{*-}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit \gamma}}$ , ${{\mathit D}_{{s}}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$ .
References:
 AAIJ 2020AW
JHEP 2012 144 Measurement of the shape of the ${B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu }$ differential decay rate
 AAIJ 2020E
PR D101 072004 Measurement of $|V_{cb}|$ with $B_s^0 \to D_s^{(*)-} \mu^+ \nu_{\mu}$ decays