Measurements of $K^{0}_{s}$, \PgL\ + \PagL, and $\Xi^{+}+\Xi^{-}$ production in pp, pPb, and PbPb collisions with CMS

We present measurements of strange hadron ($K^{0}_{s}$, \PgL\ + \PagL, and $\Xi^{+} + \Xi^{-}$) transverse momentum ($p^{}_{T}$) spectra in pp, pPb, and PbPb collisions over a wide range in charge-particle multiplicity and particle rapidity. The data were taken with the CMS detector at the LHC for pp collisions at $\sqrt{s}$ = 7 TeV, pPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV, and PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV. We find the average transverse kinetic energy ($KE^{}_{T}$) increases with event multiplicity, with a faster rate for heavier particle species. At similar multiplicities, we observe the separation in the $\left\langle KE^{}_{T} \right\rangle$, which is defined as $\left\langle KE^{}_{T} \right\rangle = \left\langle m_{T}\right\rangle - m$, where $m_T = \sqrt{m^{2} + p_{T}^{2}}$, between different particle species is larger for pp and pPb systems than PbPb system. In pPb collisions, $\left\langle KE^{}_{T} \right\rangle$ is found to be larger in the Pb-going direction than in the p-going direction. This trend of asymmetry becomes more evident for heavier particle species as event multiplicity increases. We also compare the data to models motivated by hydrodynamics.