Kaon differential flow in relativistic heavy-ion collisions

Details Kaon differential flow in relativistic heavy-ion collisions Kaon differential flow in relativistic heavy-ion collisions

1999-06-14

arxiv.org/abs/nucl-th/9906040v1

Phys.Rev. C60 (1999) 034902

Physics

Nuclear Physics

Nuclear Theory

Phys. Rev. C in press

Scientific paper

10.1103/PhysRevC.60.034902

Using a relativistic transport model, we study the azimuthal momentum asymmetry of kaons with fixed transverse momentum, i.e., the differential flow, in heavy-ion collisions at beam momentum of 6 GeV/c per nucleon, available from the Alternating Gradient Synchrotron (AGS) at the Brookhaven National Laboratory (BNL). We find that in the absence of kaon potential the kaon differential flow is positive and increases with transverse momentum as that of nucleons. The repulsive kaon potential as predicted by theoretical models, however, reduces the kaon differetnial flow, changing it to negative for kaons with low momenta. Cancellation between the negative differential flow at low mementa and the positive one at high momenta is then responsible for the experimentally observed nearly vanishing in-plane transverse flow of kaons in heavy ion experiments.

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