14 July 2017
Universidade de Coimbra
Europe/Lisbon timezone

Tetraquark resonances computed with static lattice QCD potentials and scattering theory

14 Jul 2017, 15:00
30m
Universidade de Coimbra

Universidade de Coimbra

Sala de Conferências (sala F42 no 3º andar) Departamento de Física Faculdade de Ciências e Tecnologia Universidade de Coimbra Rua Larga P-3004 516 Coimbra

Speaker

Pedro Bicudo (IST Lisboa)

Description

We study tetraquark resonances with lattice QCD potentials computed for two static quarks and two dynamical quarks, the Born-Oppenheimer approximation and the emergent wave method of scattering theory. As a proof of concept we focus on systems with isospin I = 0, but consider different relative angular momenta l of the heavy b quarks. We compute
the phase shifts and search for S and T matrix poles in the second Riemann sheet. We predict a new tetraquark resonance for l =1, decaying into two B mesons, with quantum numbers I(JP) = 0(1-), mass m= 10576 (+4 -4) MeV and decay width Gamma = 112 (+90 -103) MeV.

Primary author

Pedro Bicudo (IST Lisboa)

Co-authors

Marco Cardoso (Instituto Superior Técnico) Antje Petersen (DESY) Martin Pflaumer (Goethe-Universität Frankfurt am Main) Marc Wagner (Goethe University Frankfurt)

Presentation Materials