Winter Meeting 2025

Hadron Spectroscopy and Finite Energy Sum Rules

4 Feb 2025, 10:25

25m

Aula Magna Enric Casassas (Facultat de Física)

Speaker

Nadine Hammoud (University of Barcelona, Faculty of Physics)

Description

Hadron spectroscopy plays an important role in understanding the strong interactions, from conventional hadrons to exotic states like hybrids with explicit gluonic components. Finite-Energy Sum Rules (FESR) link low-energy resonance dynamics with high-energy Regge behavior, providing a powerful theoretical framework to study these states. Building upon the JPAC's work on $\pi p\to \pi \eta p$ and COMPASS data on $\eta \pi$ production, we aim to extend the application of the FESR to this process.
Our approach simplifies the $2\to 3$ scattering process into a tractable $2\to 2$ reaction $f_2+\pi \to \pi +\eta$, preserving the essential physics while reducing computational complexity. To support this methodology, we analyze fundamental reactions such as $\eta \eta \to \eta \eta$, $\pi \pi \to \pi \pi$, and $\pi \eta \to \pi \eta$, establishing a foundation for exploring more intricate hadronic systems.

Presentation materials

Winter-Meeting.pdf