Photon production from anisotropic quark-gluon-plasma

We calculate the medium photon production due to Compton and annihilation processes by taking into account the (3+1)-dimensional anisotropic hydrodynamics of the quark gluon plasma (QGP) expected to be formed in relativistic heavy ion collisions. We have taken the momentum-space anisotropy into account in the computation of the photon production rate finally. We present the predictions for high-energy photon yields as a function of transverse momentum and rapidity. We conclude that high energy photon production is extremely sensitive to the assumed level of initial momentum-space anisotropy of the quark-gluon plasma.