Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

The Lüscher scattering formalism on the t-channel cut

Aug 8, 2022, 5:30 PM
20m
CP1-HSZ/Ground-0.010 - HS2 (CP1-HSZ)

CP1-HSZ/Ground-0.010 - HS2

CP1-HSZ

450
Oral Presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Mr Andre Baiao Raposo (University of Edinburgh)

Description

The Lüscher scattering formalism, the standard approach for relating the discrete finite-volume energy spectrum to two-to-two scattering amplitudes, fails when analytically continued so far below the infinite-volume two-particle threshold that one encounters the t-channel cut. This is relevant, especially in baryon-baryon scattering applications, as finite-volume energies can be observed in this below-threshold regime, and it is not clear how to make use of them. In this talk we present a generalisation of the scattering formalism that resolves this issue, allowing one to also constrain scattering amplitudes on the t-channel cut.

Primary authors

Mr Andre Baiao Raposo (University of Edinburgh) Max Hansen (University of Edinburgh)

Presentation materials