Echoes of the Quark-Gluon Plasma: Resonances Reveal Extreme Matter
![Nuclear modification factors for φ, [latex]K^{\*0}[/latex], and [latex]\rho^{0}[/latex] mesons-measured in proton-lead collisions at [latex]\sqrt{s\_{\mathrm{NN}}}=5.02[/latex] TeV by the ALICE Collaboration and in gold-gold collisions at [latex]\sqrt{s\_{\mathrm{NN}}}=200[/latex] GeV by the STAR and PHENIX Collaborations-demonstrate resonance-dependent suppression patterns when compared to pion measurements within each collision system, as indicated by statistical and systematic uncertainties.](https://arxiv.org/html/2601.03991v1/x17.png)
Hadronic resonances produced in high-energy heavy-ion collisions offer a unique window into the properties of the quark-gluon plasma, providing insights into its temperature, density, and evolution.






![The study demonstrates how variations in cutoff values-ranging from 1.2 to 3.0 GeV-systematically shift the pole positions of the [latex]Z_b[/latex] resonances-specifically the [latex]Z_b(10610)[/latex] and [latex]Z_b(10650)[/latex]-relative to the [latex]B\bar{B}^<i>[/latex] and [latex]B^</i>\bar{B}^*[/latex] thresholds, revealing a sensitivity in the underlying dynamics to energy scale adjustments.](https://arxiv.org/html/2601.03697v1/x23.png)