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Estimation of isotropization time (τiso) of QGP from direct photons

✍ Scribed by Lusaka Bhattacharya

Book ID
103868043
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
141 KB
Volume
855
Category
Article
ISSN
0375-9474

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✦ Synopsis

We calculate transverse momentum distribution of direct photons from various sources by taking into account the initial state momentum anisotropy of quark gluon plasma (QGP). The total photon yield is then compared with the recent measurement of photon transverse momentum distribution by the PHENIX collaboration. It is also demonstrated that the presence of such an anisotropy can describe the PHENIX photon data better than the isotropic case in the present model. We show that the isotropization time thus extracted lies within the range 1.5 ≥ τ iso ≥ 0.5 fm/c for the initial condition used here.

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