INTERFEROMETRY IN CENTRAL p plus Pb COLLISIONS

We present the results of HBT radii calculations performed for the pion emission source created in central p+Pb collisions at root s(NN) = 5.02 TeV. Space-time expansion of the dense matter is simulated using hydrodynamic model with the Glauber Monte Carlo initial conditions. We present momentum and rapidity dependence of all interferometry parameters and their comparison to the experimental data reported by the ATLAS Collaboration. Overall, a fairly good agreement between the model and the data is achieved. The parameterization of the correlation function includes a cross term coupling the out and long directions, which is found to be nonzero. It is a first quantitative comparison of the model prediction of the cross term values with the experimental measurements and they appear to be well reproduced.