Strong decays of nonstrangeq3baryons

Abstract

We study strong decays of nonstrange baryons by making use of the algebraic approach to hadron structure. Within this framework we derive closed expressions for decay widths in an elementary-meson emission model and use these to analyze the experimental data for

Theories of Electromagnetic Productions of Pions

“…(2) indicates that it could be misleading to compare the branching ratios predicted by the constituent quark models [7,8] with the values extracted from the amplitude analyses. This can be seen by comparing in The dynamical model of Ref.…”

Structure of the nucleon in the unquenched quark model

“…Nevertheless, there is compelling evidence for the existence of exotic degrees of freedom (other than valence quarks) in hadrons, in particular for the need to include the effects of quark-antiquark pair creation. The importance of quarkantiquark configurations (or higher Fock components in baryon wave functions) is evident from measurements of thed/ū asymmetry in the nucleon sea [2], parity-violating electron scattering experiments [3,4], the proton spin crisis [5], as well as analysis of helicity amplitudes [6] and strong couplings of baryon resonances [7,8].…”

“…Nevertheless, there is compelling evidence for the existence of exotic degrees of freedom (other than valence quarks) in hadrons, in particular for the need to include the effects of quark-antiquark pair creation. The importance of quarkantiquark configurations (or higher Fock components in baryon wave functions) is evident from measurements of thed/ū asymmetry in the nucleon sea [2], parity-violating electron scattering experiments [3,4], the proton spin crisis [5], as well as analysis of helicity amplitudes [6] and strong couplings of baryon resonances [7,8].The aim of this contribution is to study the flavor asymmetry and the spin of the proton in an unquenched quark model in which the effects of quark-antiquark pair creation (uū, dd and ss) are taken into account in an explicit form via a 3 P 0 coupling mechanism [9]. In addition, we show some predictions for the other octet baryons.…”

Open Flavor Strong Decays

“…Several phenomenological models have been developed in order to carry out strong decay studies, including paircreation models [10][11][12][13][14][15][16][17], elementary meson emission models [18][19][20][21][22][23] and effective Lagrangian approaches (for example, see Ref. [24]).…”