Collectivity in ultra-peripheral heavy-ion collisions

We present full (3+1 )D dynamical simulations to study collective behavior in ultra-peripheral nucleus-nucleus collisions (UPC) at the Large Hadron Collider (LHC) with 3DGlauber+MUSIC+UrQMD framework [1, 2]. By extrapolating from asymmetric p+Pb collisions, we simulate a quasi-real photon γ* interacting Pb nucleus an collision LHC, assuming strong final-state effects. elliptic flow hierarchy between and γ*+Pb which is dominated by difference longitudinal decorrelations. Our theoretical provides quantitative tool collectivity small systems current future collider experiments.