The pseudoscalar meson and baryon octet interaction with strangeness S=-2 in the unitary coupled-channel approximation
نویسندگان
چکیده
The interaction of the pseudoscalar meson and baryon octet is investigated by solving Bethe-Salpeter equation in infinite finite volume respectively. It found that there a resonance state generated dynamically, which owns mass about 1550MeV large decay width 120-200MeV. This couples strongly to $\pi \Xi$ channel. Therefore, it might not correspond $\Xi(1620)$ particle announced Belle collaboration. At same time, this problem studied volume, an energy level at 1570MeV obtained, between $\bar{K}\Lambda$ thresholds independent cubic box size.
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ژورنال
عنوان ژورنال: Communications in Theoretical Physics
سال: 2022
ISSN: ['0253-6102', '1572-9494']
DOI: https://doi.org/10.1088/1572-9494/ac738a