We present a model–independent study of the effects of a neutral Higgs boson without definite CP–parity in the process γγ → tt̄ around the mass pole of the Higgs boson. Near the resonance pole, the interference between the Higgs–exchange and the continuum amplitudes can be sizable if the photon beams are polarized and helicities of the top and anti–top quarks are measured. Study of these interfe...

In this paper we define a property for multi-party protocols called exclusion-freeness. In multi-party protocols respecting the strongest definition of this property, participants are sure that they will not be excluded from a protocol’s execution and, consequently, they do not have to trust each other any more. We study this property on a wellknown multi-party fair exchange protocol with an on...

We study …rms’preferences towards intellectual property rights (IPR) regimes in a North-South context, using a simple duopoly model where a ’North’ and a ’South’ …rm compete in a third market. Unlike other contributions in this …eld, we explicitly introduce the South’s capability to undertake cost-reducing R&D, but maintain the South’s inferiority in utilizing and managing its R&D. In contrast ...

information is the most valuable property in stock exchange market in such a way that the more investors are informed, the better they can succeed in the market. sometimes, in such circumstances, because of a great gap between the management and the ownership in the big public companies, administrators of these companies find themseleves in a better informational situation in comparison with th...

cation exchange capacity and specific surface area are among some of the important soil characteristics the direct measurement of which is laborious, costly and time consuming. therefore, fractal dimension of particle size distribution has been widely studied in relation with many such dynamic and static processes as transmission of water and solutes, water holding capacity, heat storage and co...

This paper compares the social networks that are mobilised through claims of ownership in property regimes and transaction regimes.1 I use the categories of ‘property’ and ‘transaction’ to denote the differences between exchange practices that emphasise relationships between persons and things (property) in contrast to relationships created between persons through the circulation of things (tra...