# The 34th International Symposium on Lattice Field Theory (Lattice 2016)

24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

## Including heavy spin effects in a lattice QCD study of static-static-light-light tetraquarks

25 Jul 2016, 15:15
20m
Building B2a Room 2065 (Highfield Campus, University of Southampton)

### Speaker

Prof. Pedro Bicudo (Universidade de Lisboa)

### Description

In previous works we predicted the existence of a $\bar{b} \bar{b} u d$ tetraquark with quantum numbers $I(J^P) = 0(1^+)$ using the static approximation for the $\bar{b}$ quarks and neglecting heavy spin effects. Since the binding energy is of the same order as expected for these heavy spin effects, it is essential to include them in the computation. Here we present a corresponding method and show evidence that binding is only slightly weakened and that the $\bar{b} \bar{b} u d$ tetraquark persists.

### Primary authors

Mr Jonas Scheunert (Goethe University Frankfurt) Prof. Marc Wagner (Goethe University Frankfurt) Prof. Pedro Bicudo (Universidade de Lisboa)

 Slides