Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10724802 | Physics Letters B | 2008 | 5 Pages |
Abstract
Hard photon emitted from energetic heavy ion collisions is of very interesting since it does not experience the late-stage nuclear interaction, therefore it is useful to explore the early-stage information of matter phase. In this work, we have presented a first calculation of azimuthal asymmetry, characterized by directed transverse flow parameter F and elliptic asymmetry coefficient v2, for proton-neutron bremsstrahlung hard photons in intermediate energy heavy-ion collisions. The positive F and negative v2 of direct photons are illustrated and they seem to be anti-correlated to the corresponding free proton's flow.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
G.H. Liu, Y.G. Ma, X.Z. Cai, D.Q. Fang, W.Q. Shen, W.D. Tian, K. Wang,