Speaker
Description
Exploring the properties of strongly interacting matter at extreme temperatures and densities is a fundamental goal of relativistic heavy-ion collisions. Short-lived resonances such as $K^{*0}(\bar K^{*0})$ ($\sim 4.16$ fm/c) are considered one of the best candidates to investigate the late-stage hadronic phase produced in heavy-ion collisions. Due to their short lifetimes, the decay daughters of these resonances can experience various in-medium effects such as rescattering and regeneration. As a result, studying the ratio of resonances to their corresponding stable particles with similar quark content ($(K^{*0} + \bar K^{*0})/(K^{+} + K^{-})$) can provide insights into the interplay of these in-medium processes.
Here, we present precise measurements of the $K^{*0}(\bar K^{*0})$ mesons in Au+Au collisions at $\sqrt{s_{NN}}$= 7.7, 11.5, 14.6, 19.6, and 27 GeV, using data from the STAR Beam Energy Scan II (BES-II) program at RHIC. We present transverse momentum ($p_{T}$) spectra at mid-rapidity ($|y| < 1.0$) using its hadronic decay channel ($K^{*0}(\bar{K}^{*0}) \xrightarrow{} K^{\pm} + \pi^{\mp}$), $p_{T}$ -integrated yields ($dN/dy$), mean transverse momentum ($\langle p_{T} \rangle$) and particle ratios across different collision centralities and center-of-mass energies. The results will be compared with various model predictions, and the underlying physics will be explored and discussed in detail.
Details
Pranjal Barik, PhD Student, Indian Institutes of Science Education and Research, Berhampur, India, https://www.iiserbpr.ac.in/
| Internet talk | Yes |
|---|---|
| Is this an abstract from experimental collaboration? | Yes |
| Name of experiment and experimental site | The Star Experiment https://www.star.bnl.gov/ |
| Is the speaker for that presentation defined? | Yes |
