Speaker
Description
We present the elliptic azimuthal anisotropy coefficient ($v_2$) of the identified strange hadrons $K_{S}^{0}$ and $\Lambda$ using the scalar product and multi-particle cumulant methods in pPb collisions at 8.16 TeV and PbPb collisions at 5.02 TeV at mid-rapidity (|y|<1). The data samples were collected by the CMS experiment at the LHC. The scalar product and multi-particle $v_2$ values are measured as a function of $p_{T}$ for different centralities in PbPb and event multiplicities in pPb collisions. The $v_2$ results are compared to the inclusive charged hadrons as well as the hydrodynamic model calculations with different initial state conditions. The identified multi-particle $v_2$ in such a small collision system is measured for the first time. The results shed light on the initial state effects of the strange quark in large and small collision systems.
| Collaboration | CMS |
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