Photon decay in strong magnetic field in heavy-ion collisions

Details Photon decay in strong magnetic field in heavy-ion collisions Photon decay in strong magnetic field in heavy-ion collisions

2010-08-09

arxiv.org/abs/1008.1604v2

Phys.Rev.C83:017901,2011

Physics

Nuclear Physics

Nuclear Theory

6 pages, 3 figures

Scientific paper

10.1103/PhysRevC.83.017901

We calculate the photon pair production rate in strong magnetic field created in off-central heavy-ion collisions. Photon decay leads to depletion of the photon yield by a few percent at RHIC and by as much as 20% at the LHC. It also generates a substantial azimuthal asymmetry ("elliptic flow") of the final photon distribution. We estimate v_2~2% at RHIC and v_2~14% at LHC. Photon decay measurements is an important tool for studying the magnetic fields in early stages of heavy-ion collisions.

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