Figure 1

Generic Feynman diagrams for virtual and real super-QCD corrections to the decay $\tilde{q}\to q\tilde{\chi }$.Reuse & Permissions

Figure 2

(a) The differential decay rate for ${\tilde{q}}_L\to qg{\tilde{\chi }}_2^0$ as a function of the ${\tilde{\chi }}_2^0$ energy $x_{\tilde{\chi }}$ at the benchmark point $\mathrm{SPS}1{\mathrm{a}}^{\prime }$ ($M_{\tilde{\chi }}/M_{\tilde{q}}=0.329$). The curve labeled “resum” shows the damping near $x_{\tilde{\chi }}^{\max }$ from multiple gluon radiation according to Eq. (2.4). (b) The longitudinal and transverse polarization of the neutralino ${\tilde{\chi }}_2^0$.Reuse & Permissions

Figure 3

The $[\widehat{q}{l}^{\pm }]$ invariant mass distributions for positively (left panels) and negatively (right panels) charged leptons is shown at $\mathrm{SPS}1{\mathrm{a}}^{\prime }$ (specifically for ${\tilde{u}}_L$ masses and first and second generation leptons with vanishing masses). The upper panels include only near leptons while the lower panels display the sum of near and far leptons. The NLO predictions are represented by the solid lines for $y$-cut parameters $y_{\mathrm{c}}=0.01$ and 0.002, the Born result (approximately equivalent to NLO with $y_{\mathrm{c}}\gtrsim 0.05$) by the dashed line.Reuse & Permissions

Figure 4

The asymmetry Eq. (3.5) as a function of the $[\widehat{q}{l}^{\pm }]$ invariant mass at $\mathrm{SPS}1{\mathrm{a}}^{\prime }$ for ${\tilde{q}}_L$ decays (specifically for ${\tilde{u}}_L$ masses) into first and second generation lepton pairs (no antisquark decays included).Reuse & Permissions

Figure 5

Invariant $[\widehat{q}l]$ mass distributions, $y_{\mathrm{c}}=0.01$, for muons and electrons produced directly in the neutralino and slepton decay. For muon and electron pairs produced from tau decays in the decay chain, the reduction of the NLO cross sections for a transverse momentum cut of 10 GeV is indicated by the dotted lines.Reuse & Permissions