Objective This project will investigate the newly observed and poorly-understood `XYZ' resonances seen in the spectrum of charmonium resonances around the open-charm threshold. These states are difficult to explain in a simple quark model and a full understanding of their nature requires lattice quantum chromodynamics to provide an ab-initio framework. One important candidate to describe some of these states is a tetraquark configuration of a bound charm quark and anti-quark coupled non-trivially to a light quark and anti-quark. The technical expertise to perform these lattice calculations has only recently been developed and it will be tested and extended in this collaborative project by combining the expertise of the fellow and the PI. To understand the nature of unstable states at thresholds for strong decays requires the lattice calculation of multi-meson states interacting in finite volume and analysed using the Luescher method, extended to include coupled-channel scattering amplitudes. These new techniques, pioneered by the fellow will be applied for the first time to study charmed mesons in D-Dbar and Ds-Dsbar scattering in the energy range relevant for studies of the mysterious XYZ resonances. Fields of science engineering and technologymaterials engineeringcompositesnatural sciencesphysical sciencesquantum physicsquantum field theorynatural sciencesphysical sciencestheoretical physicsparticle physicsgluonsnatural sciencesphysical sciencestheoretical physicsparticle physicsquarks Keywords Hadron physics exotic mesons resonances Lattice QCD coupled-channel scattering Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2016 - Individual Fellowships Call for proposal H2020-MSCA-IF-2016 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN Net EU contribution € 175 866,00 Address COLLEGE GREEN TRINITY COLLEGE D02 CX56 DUBLIN 2 Ireland See on map Region Ireland Eastern and Midland Dublin Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 175 866,00
