Possibility of measuring the magnetic moment of theWboson at heavy-ion colliders

Abstract

We consider the possibility of measuring the magnetic moment at the W boson at a heavy-ion collider. We find that the cross section for the process ~b +~b +~~ -e * v e p T v p is very sensitive to this pararneter and that a 3u measurement of 35% seems possible at the CERN Large Hadron Collider and a precision of 8% or so at the Superconducting Super Collider, given an integrated luminosity of 0.1 pb-'.

Towards a complete calculation of γγ → 4f

“…Nevertheless, it involves all topologies except one. Cross sections for this final state have been calculated earlier in [7]. Figure 6 shows the total cross section for CC13 with the canonical cuts for the DESY/ECFA Linear Collider study (our results agree with [7] in their cuts).…”

“…Cross sections for this final state have been calculated earlier in [7]. Figure 6 shows the total cross section for CC13 with the canonical cuts for the DESY/ECFA Linear Collider study (our results agree with [7] in their cuts). Since this final state includes two neutrinos, no invariant mass cut can be applied to suppress the "background".…”

“…Nevertheless, it involves all topologies except one. Cross sections for this final state have been calculated earlier in [7].…”

“…For some gauge invariant subsets of the diagrams contributing to γγ → 4f , first numerical results in the region above the W + W − threshold have been published recently [7,8]. These studies have focused on numerical calculations of cross sections for specific final states and have not attempted a complete investigation of γγ → 4f .…”

Phenomenological study of the processe+e−→μ+Couture1, Godfrey2 1994Phys. Rev. D4000View full textAdd to dashboardCite

“…Another possibility it to study single W production in e − γ collisions [5,8,20]. The process γγ → W + W − through heavy ion collisions also offers interesting possibilities [41]. However, one has to deal with an enormous background in the case of head-on collisions or a greatly reduced hard-photon rate for glancing collisions.…”