Speaker
Petr Balek
(Weizmann Institute of Science (IL))
Description
Hanbury Brown and Twiss (HBT) radii with respect to the 2nd-order event plane are measured in central p+Pb collisions at √s_NN = 5.02 TeV with the ATLAS detector at the LHC. A total integrated luminosity of 28 nb^−1 is sampled. The radii and their relative modulation are presented as a function of the magnitude of the flow vector |q_2| measured at the side of the calorimeters that the Pb beam faces with pseudorapidity η < −2.5. Modulations of the transverse HBT radii are observed with the same orientation as in ion-ion collisions, in which they are attributed to hydrodynamic evolution from an elliptic initial geometry. This modulation is consistent with a hydrodynamic evolution of a short-lived medium.
Primary author
Petr Balek
(Weizmann Institute of Science (IL))
