Photon decay in a strong magnetic field in heavy-ion collisions
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2011-01-01
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Tuchin, Kirill
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Physics and Astronomy
Physics and astronomy are basic natural sciences which attempt to describe and provide an understanding of both our world and our universe. Physics serves as the underpinning of many different disciplines including the other natural sciences and technological areas.
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Physics and Astronomy
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We calculate the photon pair production rate in a 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 v2 ≈ 2% at RHIC and v2 ≈ 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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This article is from Physical Review C 83 (2011): 017901, doi: 10.1103/PhysRevC.83.017901. Posted with permission.
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Sat Jan 01 00:00:00 UTC 2011