# The a1(1260) resonance from Lattice QCD

#### The a1(1260) resonance from Lattice QCD

- Event time: 2:00pm until 3:00pm
- Event date: 16th February 2022
- Speaker: Christopher Culver (University of Liverpool)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

We report the first determination of universal parameters of the axial a1(1260) resonance from lattice QCD. The finite-volume energy levels are obtained in this channel using two and three particle operators. The energies are then fed through a three-body quantization condition (FVU) which then determines the infinite-volume scattering amplitude. Subsequently, pole position and residua of the three-body resonance are extracted on the second Riemann sheet and compared to the phenomenological ones.

#### Event resources

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..