Search for exotic states with $c \bar{c} s \bar{s}$ content at Belle

Sumitted to PubDB: 2024-03-11

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Authors	Dmytro Meleshko, Elisabetta Prencipe
Non-Belle II authors	Sören Lange
Date	2024-03-05
Belle II Number	BELLE2-TALK-CONF-2024-022
Abstract	We present results for an analysis of $e^{+} e^{-} t o D_{s}^{+} D_{s J}^{-} A$ + c.c. processes in the continuum ( $A$ = anything else) using the whole Belle dataset (980.1 fb $^{- 1}$ ). The goal of the analysis is the study of $D_{s}^{+} D_{s 0}^{*} (2317)^{-} a n d D_{s}^{+} D_{s 1} (2460)^{-}$ invariant mass systems to search for possible exotic, resonant states with $c \bar{c} s \bar{s}$ quark content. As the Ds0 and Ds1 are often considered themselves as 4-quark candidates, the combined states may contain admixtures of a 6-quark state in the wave function. In addition, precise mass resolution and mass splitting measurements are presented as a test of the chiral perturbation theory. This research is supported by BMBF (05H21RGKB1) and Horizon2020 European Union Marie Slodowska Curie Action in the RISE program (n.822070).
Conference	DPG-Frühjahrstagung 2024

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