title: Test of local realism with entangled kaon pairs and without inequalities.
abstract: We propose the use of entangled pairs of neutral kaons, considered as a promising tool to close the well known loopholes affecting generic Bell's inequality tests, in a specific Hardy-type experiment. Hardy's contradiction without inequalities between local realism and quantum mechanics can be translated into a feasible experiment by requiring ideal detection efficiencies for only one of the observables to be alternatively measured. Neutral kaons are near to fulfill this requirement and therefore to close the efficiency loophole.
authors.affiliation: Grup de Física Teòrica, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
authors.forename: Albert
authors.initials: A
authors.lastname: Bramon
authors.forename: Gianni
authors.initials: G
authors.lastname: Garbarino