Speaker
Sanshiro Mizuno for the PHENIX Collaboration
(University of Tsukuba (JP))
Description
Direct photons are emitted from various processes from all stages from the beginning to the end of the high energy heavy ion collisions.
Theoretical models tell that the angular emission patterns of the photons are different depending on their production mechanism.
Previous published PHENIX results indicate that the second order Fourier coefficient ($v_{2}$) is positive for $p_{T}$<4.0GeV/c, which is qualitatively explained by hydrodynamical model calculations, but not quantitatively.
The 3rd order Fourier coefficient ($v_{3}$) of photons has been proposed as a critical additional handle to understand photon emission.
Photons emitted under the presence of strong magnetic field created in the collision would have a significant influence on $v_{2}$ and very little on $v_{3}$.
In contrast, hydrodynamical models predict a sizable photon $v_{3}$.
We report the latest results on the direct photon $v_{2}$ and $v_{3}$ coefficients in Au+Au collisions at $\sqrt{s_{NN}}$=200GeV.
| On behalf of collaboration: | PHENIX |
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Primary author
Sanshiro Mizuno for the PHENIX Collaboration
(University of Tsukuba (JP))
