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Implications of the $$Z_{cs}$$(3985) and $$Z_{cs}$$(4000) as two different states

$$Z_{cs}$$(3985)と$$Z_{cs}$$(4000)は2つの違う状態である

Meng, L.*; Wang, B.*; Wang, G.-J.*; Zhu, S.-L.*

Meng, L.*; Wang, B.*; Wang, G.-J.*; Zhu, S.-L.*

最近発見された2つのテトラクォーク状態$$Z_{cs}$$(3985)と$$Z_{cs}$$(4000)の崩壊を有効理論を用いて調べた結果、崩壊の分岐比からこれらが同じ状態か異なる状態かを判断できることがわかった。

Two recently found tetraquark resonances $$Z_{cs}$$(3985) and $$Z_{cs}$$(4000) are studied in a solvable nonrelativistic effective field theory. We include the possible violations of heavy quark spin symmetry and SU(3) flavor symmetry in a comprehensive approach. Our results show that the decay rates can be used to judge whether these resonances can be different states or not.

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