27 2 v 3 2 0 M ar 2 00 2 Weak Scale Quantum Gravity Effects for γγ → ZZ in the TeV region

We consider the effect of massive spin-2 gravitons that occur as Kaluza-Klein excitations of the graviton in a Weak scale Quantum Gravity scenario on the process γγ → ZZ, which in the Standard Model can proceed through loop diagrams. For a wide range of parameters, we show that the massive gravitons leave behind signatures that should be verifiable in a TeV… CONTINUE READING