Dante Amidei

This plot shows the forward-backward asymmetry in bottom quark production at the Tevatron as a function of the mass of the bottom-antibottom system compared to predictions with and without axigluons. When a top-antitop quark pair is produced at the Tevatron, does the top quark go more often in the direction of the collision beam’s proton or antiproton? Early measures of the forward-backward asymmetry — the difference in direction between an outgoing pair of particles relative to the incoming colliding particles…