Bottomonium self-energies due to the coupling to the meson-meson continuum

Higher bottomonia in the unquenched quark model

“…Continuum coupling effects, due to the creation of qq pairs, determine a shift of the physical mass of a hadron with respect to its bare mass, as already shown by several authors in the baryon [1] and meson [2][3][4][5][6] sectors. For example, the resonance (1405) is strongly influenced by the nearbyKN channel [7] and the f 0 (980) behaves remarkably as a KK molecule [8].…”

“…In this contribution, we show an application of the unquenched quark model (UQM) [4][5][6][17][18][19]] to the calculation of the bottomonium spectrum with self energy corrections [6]. We also discuss our results for the open bottom strong decay widths of higher bottomonia [6], computed within a modified version of the 3 P 0 pair-creation model [4][5][6].…”

Diquark Correlations in Baryons: The Interacting Quark Diquark Model

“…where T † stands for the 3 P 0 quark-antiquark pair-creation operator [75][76][77][78], A is the baryon/meson, B and C represent the intermediate state hadrons. E a , E b and E c are the corresponding energies, k and ℓ the relative radial momentum and orbital angular momentum between B and C and J = J b + J c + ℓ is the total angular momentum.…”

Open Flavor Strong Decays

“…The operator γ eff 0 of Eq. (13) is an effective pair-creation strength [28,30,33,45,46], defined as…”

“…Here, we present some our results for the two-body strong decay widths of nucleon resonances in the 3 P 0 paircreation model. The decay widths are computed as [10,11,17,27,28,30,33,45] …”