Squark loop corrections to the charged Higgs boson pair production in photon-photon collisions

We calculate the squark one-loop corrections to the cross sections of charged Higgs boson pair production in photon-photon collisions in the minimal supersymmetric extension of the standard model. In general, in the case of a large splitting in the masses of the left-top squark and the right-top squark and for tanβ near $1.5,$ the corrections can reduce the cross sections by more than $10%$ for a wide range of the charged Higgs boson mass, depending on the e⁺e^- center-of-mass energy. But in other cases, the corrections are at most only a few percent. Those corrections can be comparable to the O(αmₜ²/mW²) Yukawa corrections in the previous literature.