# Baryon-baryon interactions and the H dibaryon from lattice QCD

#### Baryon-baryon interactions and the H dibaryon from lattice QCD

- Event time: 2:00pm until 3:00pm
- Event date: 2nd March 2022
- Speaker: Jeremy Green (Trinity College Dublin)
- 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

Using lattice QCD, one can study hadrons and their interactions starting

from quantum chromodynamics. In the baryon-baryon sector, this offers

the prospect of a first-principles basis for nuclear physics. I will

discuss the methodology and challenges of these calculations and present

a study of the conjectured H dibaryon, a bound state of hyperons with

quark content uuddss, at a single SU(3)-flavour-symmetric quark mass

point. For the first time, an extrapolation to zero lattice spacing was

performed, which had an unexpectedly large effect on the binding energy.

I will also review the status of calculations in the nucleon-nucleon sector.

#### 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..