We present the first azimuthally differential measurements of the pion source size relative to the second harmonic event plane in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of root(NN)-N-s = 2.76 TeV. The measurements have been performed in the centrality range 0%-50% and for pion pair transverse momenta 0.2 < k(T) < 0.7 GeV/c. We find that the R-side and R-out radii, which characterize the pion source size in the directions perpendicular and parallel to the pion transverse momentum, oscillate out of phase, similar to what was observed at the Relativistic Heavy Ion Collider. The final-state source eccentricity, estimated via R-side oscillations, is found to be significantly smaller than the initial-state source ecc...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the ...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the ...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...
We present the first azimuthally differential measurements of the pion source size relative to the s...