6–12 Apr 2025
Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany
Europe/Berlin timezone

Recent femtoscopy and polarization studies with the CMS experiment

9 Apr 2025, 11:10
20m
HZ 4 (Goethe University Frankfurt, Campus Westend, Hörsaalzentrum)

HZ 4

Goethe University Frankfurt, Campus Westend, Hörsaalzentrum

Oral Correlations & fluctuations Parallel session 32

Speaker

Isabela Maietto Silverio (UNESP - Universidade Estadual Paulista (BR))

Description

This presentation discusses recent results on femtoscopic correlations involving $D^0$ ($\bar{D0}$) mesons and hyperon polarization in pPb collisions at $\sqrt{s_{NN}}=8.16$ TeV. The femtoscopic measurements investigate the strong interaction for pair combinations of particles, allowing to extract the scattering observables accessible through their correlation functions. The results may contribute to the search for new exotic bound states of matter, such as molecular states arising from strong interactions. The results for charged hadrons produced in PbPb collisions at $\sqrt{s_{NN}}=5.02$ TeV will also be discussed, in which the Levy-type of sources are employed to extract the correlation strength parameter \lambda, the Levy index \alpha, and the Levy scale parameter $R$, as a function of the pair transverse mass $m_T$, for various centrality ranges. In addition, the first measurements of $\Lambda$ and $\bar{\Lambda}$ particles’ local polarization in pPb collision at $\sqrt{s_{NN}}= 8.16$ will be presented. These results pose a challenge to the current theoretical implementation of spin polarization in heavy ion collisions and offer new insights into the origin of spin polarization in hadronic collisions at LHC energies.

Category Experiment
Collaboration (if applicable) CMS

Author

Isabela Maietto Silverio (UNESP - Universidade Estadual Paulista (BR))

Presentation materials