Azimuthally-sensitive two-pion interferometry in U+U collisions at STAR

20 May 2014, 16:30
2h
spectrum (darmstadtium)

spectrum

darmstadtium

Board: I-08
Poster Correlations and Fluctuations Poster session

Speaker

John Campbell (The Ohio State University)

Description

Collisions between uranium nuclei have been produced in the Relativistic Heavy Ion Collider and measured in the STAR detector. Due to the prolate deformation of the nuclei, fully overlapping U+U collisions offer the opportunity to produce highly anisotropic participant zones, similar in shape to mid-central Au+Au collisions, but with twice the size. The larger fireball should be characterized by a long time over which it collectively evolves from its non-trivial initial shape to its final one. The final-state anisotropy of zero-spectator collisions in *momentum* space ($v_n$) is under active study. We will present a preliminary analysis of the *coordinate*-space anisotropy, measured via azimuthally-sensitive two-pion interferometry ("HBT") of full-overlap collisions, performed differentially in the reduced flow parameter $q_{2}$ in U+U collisions at$\sqrt{s_{NN}}$ = 193 GeV.
On behalf of collaboration: STAR

Author

John Campbell (The Ohio State University)

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