The new resonances Zcs(3985) and Zcs(4003) (almost) fill two tetraquark nonets of broken SU(3)f

Autor:	Antonio D. Polosa, Luciano Maiani, Veronica Riquer
Rok vydání:	2021
Předmět:	Physics Particle physics Multidisciplinary Quark model Tetraquark Strangeness 010502 geochemistry & geophysics 01 natural sciences Symmetry (physics) 0105 earth and related environmental sciences
Zdroj:	Science Bulletin.
ISSN:	2095-9273
DOI:	10.1016/j.scib.2021.04.040
Popis:	New data from BESIII and LHCb show the existence of resonances with strangeness filling multiplets of the broken SU(3)_f symmetry, with the pattern predicted by the quark model. This is the case of the newly discovered Z_{cs} (3985) and Z_{cs}(4003), which have a natural accommodation in the tetraquark picture, as shown in this note. The quasi-degeneracy between Z_{cs} (3985) and Z_{cs}(4003) reproduces, in the strange sector, the situation observed with X(3872) and Z_c(3900). This represents a significative score in favor of the tetraquark scheme.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b430e05f83a0d115629992c7cb5b0e1b https://doi.org/10.1016/j.scib.2021.04.040 Zobrazit plný text záznamu Full Text from ScienceDirect