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The absorption cross section of the Einstein?Maxwell Dilaton Axion (EMDA) black hole for Dirac particles is investigated. It is shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase, but it increases as the mass of the particle increases. It is also shown that the absorption cross section for the massless Dirac particles is 1/8 of the area of the horizon, which may be an universal property for minimally coupled massless Dirac particles.

The absorption cross section of the static Einstein–Maxwell dilaton axion (EMDA) black hole for scalar particles is investigated. It is shown that the ratio of the absorption cross section of the EMDA black hole to that of the Schwarzschild black hole decreases as the absolute value of the dilaton increases, and it becomes zero as the dilaton tends to its extremal value. It is also shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase, and it decreases as the mass of the particle decreases.

The low energy absorption cross section and the decay rate of the stationary Axisymmetric Einstein–Maxwell Dilaton Axion black hole for massless scalar particles is calculated analytically. It is shown that the partial absorption cross section increases as the rotating parameter a and the absolute value of the dilaton D decreases. It is also shown that the partial absorption cross section is not always positive due to superradiance factor ω–mΩ. However, the decay rate of this black hole is always positive.