Choose timezone
Your profile timezone:
Description
Recently, there has been an increased interest in possible tests of locality via Bell’s inequality or tests of entanglement at colliders, in particular at the LHC. These have involved various physical processes, such as tt¯, or τ+τ− production, or the decay of a Higgs boson to two vector bosons H→VV*. In this talk, we argue that none of these proposals constitutes a test of locality via Bell’s inequality or a test of quantum entanglement without assuming an underlying quantum field theory, such as the Standard Model. In all cases, what is measured is the momenta of the final state particles. Using the construction proposed by Kasday (1971) in a different context, and adapted to collider scenarios by Abel, Dittmar, and Dreiner (1992), it is straightforward to construct a local hidden variable theory (LHVT) which exactly reproduces the data. This construction is only possible as the final state momenta all commute. It is also by construction local with all correlations being separably generated. Thus, an LHVT cannot yet be excluded at colliders.