Seminário

Meson resonances and S matrix unitarity from lattice QCD potentials

Sala de seminários do LIP, Lisboa

Por Pedro Bicudo (IST).

We discuss how to study I = 0 quarkonium resonances decaying into pairs of heavy-light mesons using static potentials from lattice QCD. These static potentials can be obtained from a set of correlation functions containing both static and light quarks. As a proof of concept we focus on bottomonium with relative orbital angular momentum L = 0 of the  bbbar pair corresponding to      J P C = 0 −+ and J P C = 1 −− . We use static potentials from an existing lattice QCD string breaking study and compute phase shifts and T matrix poles for the lightest heavy-light meson-meson decay channel. We discuss our results in the context of corresponding experimental results, in particular for Υ(10860) and Υ(11020).

 Work done with Marco Cardoso, Nuno Cardoso,  Marc Wagner.

11h30
LIP - Laboratório de Instrumentação e Física Experimental de Partículas