Support for the SM from hadronic collider data

To lowest order accuracy a non-minimal mechanism would be signalled by finding po 1. We can, in principle, utilize the u e — Une and P e — P e reactions to test this. The formulae (5.1.39, 40) for these purely neutral current (NC) reactions utilized the relations (5.1.2) and (5.2.1). We can avoid use of these equations to write 

Either by comparing these with the experimental cross-sections, using the by now accurate value of Mz, or by taking the ratio of these cross-sections which is independent of Mz, one measures sin 9w in its essential role as the 7-Z mixing parameter linked to the electroweak unification. 

Let us call sin 9w measured this way (sin 9w)v,te- We can now check (5.2.1) by computing pQ using the measured boson masses and taking 

Results of the CHARM II collaboration at CERN (CHARM II, 1991) yield 

Historically, hadronic colliders have played a leading role in opening new territory. More precise exploration then follows with e e machines. The latter are considered in Chapter 8. Here, we study some of the major results that emerge from the CERN pp Collider and the FNAL pp Tevatron. The pioneering role of hadronic colliders in discovering the gauge vector mesons was mentioned in Section 4.3 and will be analysed in more detail here. 

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