The interplay between spectator and participant matter in heavy-ion collisions is investigated in the context of a microscopic transport model. Transport simulations show that flow patterns for the participant matter are strongly influenced by the presence of the nearby spectator matter. However, the influence is mutual. During the explosion of the participant zone, the spectator matter acquire...

Various quasipotential two-body scattering equations are studied at the one-loop level for the case of tand u-channel exchange potentials. We find that the quasipotential equations devised to satisfy the one-body limit for the t-channel exchange potential can be in large disagreement with the fieldtheoretical prediction in the case of u-channel exchange interactions. Within the spectator model,...

The production of slow nucleons in semi-inclusive deep inelastic electron scattering off the deuteron is investigated in the region x > 0.3. It is shown that within the spectator mechanism the semi-inclusive cross section exhibits a scaling property even at moderate values of Q2 (∼ few (GeV/c)2) accessible at present facilities, like CEBAF . Such a scaling property can be used as a model-indepe...

Recently there has been important progress1-3 in understanding particle production mechanisms and coherent effects in QCD involving the =active” quark and gluons which participate in high momentum transfer reactions. However, the soft gluon radiation and hadronieation of the ‘spectator” constituents produced at low momentum transfer has not been discussed in detail. Since the hard scattering su...

Various quasipotential two-body scattering equations are studied at the one-loop level for the case of tand u-channel exchange potentials. We find that the quasipotential equations devised to satisfy the one-body limit for the t-channel exchange potential can be in large disagreement with the fieldtheoretical prediction in the case of u-channel exchange interactions. Within the spectator model,...

In his comprehensive overview of moral philosophy, The Theory of Moral Sentiments (1759), Adam Smith made a key contribution through the concept of the “impartial spectator”—an imagined third party who allows an individual to objectively judge the ethical status of his or her actions. Also called the “man within the breast,” the impartial spectator is a tool through which individuals divide the...