Azimuthal asymmetry of direct photons in intermediate energy heavy-ion collisions

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dc.creatorLiu, G. H.
dc.creatorMa, Y. G.
dc.creatorCai, X. Z.
dc.creatorFang, D. Q.
dc.creatorShen, W. Q.
dc.creatorTian, W. D.
dc.creatorWang, K.
dc.date2007-12-03
dc.date2008-04-24
dc.date.accessioned2026-07-07T09:52:29Z
dc.date.available2026-07-07T09:52:29Z
dc.descriptionHard 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 $v_2$, for proton-neutron bremsstrahlung hard photons in intermediate energy heavy-ion collisions. The positive $F$ and negative $v_2$ of direct photons are illustrated and they seem to be anti-correlated to the corresponding free proton's flow.
dc.description7 pages, 4 figures; accepted by Physics Letters B
dc.identifierhttps://arxiv.org/abs/0712.0299
dc.identifierhttp://arxiv.org/abs/0712.0299
dc.identifierPhys. Lett. B 663 (2008) 312
dc.identifierdoi:10.1016/j.physletb.2008.04.037
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165611
dc.subjectNuclear Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleAzimuthal asymmetry of direct photons in intermediate energy heavy-ion collisions
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