Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 307 / 3 / iii / Solution

Move $Q_{\alpha }$ through the two odd supercharges and use $\{Q_{\alpha },Q_{\beta }\}=0$:Consequently,This unsimplified form keeps all signs transparent; changing the placement convention for the conjugate supercharge changes the displayed intermediate sign consistently with the definition of $B_{\mu }$.