18–22 Sept 2017
Polish Academy of Arts and Sciences
Europe/Warsaw timezone

Azimuthally-dependent femtoscopy in central p+Pb collisions at 5 TeV with ATLAS

19 Sept 2017, 15:10
20m
Main Lecture Hall (Główna Aula)

Main Lecture Hall (Główna Aula)

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))

Presentation materials