The 39th International Symposium on Lattice Field Theory (Lattice 2022)

Three particle resonance in lattice ϕ4 theory

8 Aug 2022, 14:40

20m

CP1-HSZ/0.010 (CP1-HSZ) - HS2 (CP1-HSZ)

Oral Presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Marco Garofalo (Helmholtz-Institut für Strahlen- und Kernphysik)

Description

We study a three-particle resonance in Euclidean Lattice ${\varphi }^4$ theory with two fields, having different masses and an interaction that makes the heavy field decay into three light. We observe the avoided-level crossings characteristic of a resonance and analyse the data with two formalisms FVU and RFT with an aim to determine the mass and the width of the resonance.

Presentation materials

scattering_phi4_lattice2022.pdf