IV Hot QCD Matter Conference 2026

Centrality- and $p_{\mathrm{T}}$-differential anisotropic ($v_{2}$, $v_{3}$) flow with (multi)strange hadrons in OO and NeNe collisions with the CMS detector

Not scheduled

20m

Indian institute of Science Education and Research (IISER), Tirupati

Poster Presentation Collectivity and Bulk Dynamics from Small to Large Collision Systems

Speaker

Bismita Behera (Indian Institute of Technology Madras (IN))

Description

(Multi)strange hadrons are expected to decouple from the system earlier than
non-strange hadrons and therefore experience reduced interactions during the
late-stage hadronic rescattering. In this measurement, we present the
centrality- and $p_{\mathrm{T}}$-differential elliptic ($v_{2}$) and triangular
($v_{3}$) flow of strange and multistrange hadrons, including
$K^{0}_{\mathrm{S}}$, $\Lambda$, $\Xi$, and $\Omega$, in OO and NeNe collisions
recorded with the CMS detector. We observe a clear mass ordering and
baryon--meson splitting in $v_{2}$ and $v_{3}$, highlighting the role of
hydrodynamic evolution and partonic coalescence in the systems produced in
these light-ion collisions. The observed number-of-constituent-quark (NCQ)
scaling of $v_{2}$ provides evidence for the relevance of partonic degrees of
freedom in these systems.