"Vector Leptoquark (t-channel) upper cross section limit" of "Search for new physics in the $\tau$ lepton plus missing transverse momentum final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Bayesian upper limits at 95% CL on the cross section of the process $pp\rightarrow\tau\nu$ mediated
via LQ exchange in the t-channel. The inner (green) band and the outer (yellow) band indicate
the regions containing 68 and 95%, respectively, of the distribution of limits expected under
the background-only hypothesis. The predicted LQ cross section at LO in the three coupling
benchmark scenarios is depicted in different colors for $g_{U}=1$. The uncertainty bandy correspond
to the sum in quadrature of PDF and scale variations. The first benchmark scenario considers
only couplings to left-handed SM fermions (i.e. $\beta_{\text{R}}^{ij}=0$) and is referred to as
"best fit LH". The second benchmark, referred to as "best fit LH+RH", considers $|\beta_{\text{R}}^{\text{b}\tau}|=1$
and all other $\beta_{\text{R}}^{ij}=0$. In the third "democratic" benchmark, equal couplings only to LH fermions are
assumed, i.e. $\beta_{\text{L}}^{ij}=1$ and $\beta_{\text{R}}^{ij}=0$ for all $i$ and $j$.