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

Investigating excited N states via the measurement of $\rho^0$–p final-state interaction with ALICE

Not scheduled
20m
Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Poster Light and strange flavor physics & nuclei Poster session 2

Speaker

Maximilian Korwieser (Technische Universitaet Muenchen (DE))

Description

Experimental data on the interaction between vector mesons and nucleons are a crucial input for understanding the pattern of in-medium chiral symmetry restoration (CSR) and dynamically generated excited nucleon states. However, accessing these interactions is hampered by the short lived nature of the vector mesons, making traditional scattering experiments unfeasible. In recent years the ALICE Collaboration performed femtoscopy studies with particle pairs produced in nucleus nucleus collisions to investigate the interactions on challenging systems like ϕ—p.
Leveraging the excellent PID capabilities of the ALICE experiment, coupled with the copious production of $\rho^0$ mesons and protons at the LHC in pp collisions, ALICE presents the first-ever measurement of the $\rho^0$–p correlation function as a function of the relative momentum. The data are interpreted employing calculations within the framework of unitarised chiral perturbation theory in a coupled-channel ansatz. This measurement represents an unprecedented opportunity to study the nature of the excited N, in particular N(1700) and N(1900), unveiling if these states are molecular in nature and shedding light on possible signatures of CSR at LHC energies.

Category Experiment
Collaboration (if applicable) ALICE

Authors

ALICE Collaboration Maximilian Korwieser (Technische Universitaet Muenchen (DE))

Presentation materials