Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session D09: Meson Electro- and Photo-production
3:30 PM–5:18 PM,
Saturday, April 13, 2019
Sheraton
Room: Governor's Square 11
Sponsoring
Units:
DNP GHP
Chair: Latifa Elouadrhiri, Jefferson Lab
Abstract: D09.00006 : Equivalency of Isospin and Particle Representations for NN{\bar K} Kaonic Clusters*
4:30 PM–4:42 PM
Presenter:
Roman Ya Kezerashvili
(New York City College of Technology)
Authors:
Igor Filikhine
(North Carolina Central University)
Roman Ya Kezerashvili
(New York City College of Technology)
Vladimir M Suslov
(North Carolina Central University)
Branislav Vlahovic
(North Carolina Central University)
In the framework of the Faddeev equations in configuration space the quasi-bound states of the kaonic cluster NN{\bar K} are considered using both the isospin and particle representations. Within the isospin formalism, the '' ppK- '' cluster is determined as NN{\bar K}(sNN=0) system (the other possible cluster is " dK- ''). The alternative consideration of the kaonic clusters which was recently proposed (PRC 94, 054001-7 (2016)) is the isospinless ''particle model''. In this model, the system is presented as superposition of the ppK- and pnK0 states which are possible due to a particle transition. We show the equivalency of isospin and particle representations using an unitary transformation of isospin basis. Such equivalency is possible under the assumption that the probabilities to find the system in the ppK- or pnK0 state are equal. Numerical calculations using phenomenological potentials are presented for the case of weak coupling of the channels. The relation of the particle representation to the theory of two-level system is addressed and discussed.
*This work is supported by the National Science Foundation grant HRD-1345219
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