Speaker
Description
Resonances are useful tools to study the properties of the hadronic medium produced in high energy heavy-ion collisions, due to their short lifetime. In particular, the baryonic resonance $\Lambda(1520)$ is important because of its lifetime ($\tau \sim$ 12.6 fm/$\it c$), which lies in between the lifetimes of $ K^*$ and $\phi$ resonances.
Its study will indicate the dominance of re-scattering or regeneration in the yields and support results obtained for other resonances having different lifetimes. The reconstruction of $\Lambda(1520)$ as a function of multiplicity in pp collisions at $\sqrt{s}$ = 13 TeV has been performed via its hadronic decay channel. New measurements of the transverse momentum ($p_{\rm{T}}$) spectra, $p_{\rm{T}}$-integrated yield ($\langle dN/dy\rangle$), $\langle p_{\rm{T}}\rangle$ and $\Lambda(1520)/ \Lambda$ yield ratio in different multiplicity classes will be presented and discussed. The results obtained are expected to provide more information on strange resonance production and the system-size evolution of the hadronic phase in small systems. Furthermore, these results are important for studies of the multiplicity-dependent enhancement of multi-strange hadrons in small systems.
