 2017

Source paper: www.whatdotheyknow.com/request/oxford_physics_past_papers_2/response/2340696/attach/5/Physics%20Papers%202016.pdf?cookie_passthrough=1. The held cover dates this paper to 19 April 2017; the bundle filename does not determine the year. We use the stated mostly-plus spacetime metric, $d=4-ϵ$, and the source's loop-insertion convention $i\Pi$. Several printed formulas need corrections, justified where they occur below.