Ramos Gómez, ÀngelsLlorens Giralt, Quim2019-09-172019-09-172019-01https://hdl.handle.net/2445/140280Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2019, Tutora: Àngels Ramos GómezIn this work we present predictions for meson-baryon molecules in the Ecc sector. The states are modelled as either pseudoscalar or vector mesons interacting with ground state baryons in s-wave, through a t-channel vector exchange picture described by effective Lagrangians. Unitarization is implemented using the Bethe-Salpeter equation, from which the molecules emerge as poles of the resulting scattering amplitude. As a result, we get a total of eight states. Four pseudoscalar-baryon states, with JP = 1=2-, at 3862, 4135, 4239, and 4240 MeV; and four vectorbaryon states, degenerate with JP = 1=2-; 3=2-, with masses of 4380, 4353, 4387 and 4523 MeV.5 p.application/pdfengcc-by-nc-nd (c) Llorens Giralt, Quim, 2016http://creativecommons.org/licenses/by-nc-nd/3.0/es/Mesons (Física nuclear)BarionsMolèculesTreballs de fi de grauMesonsBaryonsMoleculesBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess