Speaker
Description
This talk presents an overview of recent measurements from the ATLAS and CMS collaborations that study collective behavior in $p$+Pb and $pp$ collisions.For $p$+Pb collisions, measurements of collective behavior involving strange, charm and bottom hadrons are presented. Measurements of elliptic anisotropy in Ultra-peripheral $p$+Pb collisions, which are
in fact $p$+$\gamma$ collisions, are presented and compared to corresponding measurements in hadronic $p$+Pb collisions. Several measurements that investigate the long-range correlations observed in $pp$ collisions, commonly called the ``ridge'', are presented. A study of the dependence of the ridge on the presence of a hard process in the event, namely a $Z$-boson, is presented, and its implications are discussed. Studies of the long-range correlations in $pp$ collisions involving heavy-flavor hadrons are presented. Finally, correlation measurements with an active rejection of particles associated with semi-hard processes, such as low-pT jets, are also discussed. These measurements can give further insight into the origin of the $pp$ ridge.
