Masses and strong decays of open charm hexaquark states $$\Sigma _{c}^{(*)}{\Sigma }_{c}^{(*)}$$

Ling, Xi-Zhe; Liu, Ming-Zhu; Geng, Li-Sheng

doi:10.1140/epjc/s10052-021-09867-2

Cited by 15 publications

(9 citation statements)

References 108 publications

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“…The existence of the molecular states in the c c system is solid and supported by many literatures [83,85,102,104,105,108,109]. These literatures all suggested the existence of the molecular state [ c c ] 0 0 , while for the existence of [ c c ] 1 1 molecule, the conclusion still relied on the different treatments of theoretical models.…”

Section: T CC State and Other Heavy Flavor Molecular Statesmentioning

confidence: 88%

Systematics of the heavy flavor hadronic molecules

Chen

Meng

et al. 2022

Eur. Phys. J. C

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With a quark level interaction, we give a unified description of the loosely bound molecular systems composed of the heavy flavor hadrons $$({\bar{D}},{\bar{D}}^*)$$ ( D ¯ , D ¯ ∗ ) , $$(\Lambda _c, \Sigma _c, \Sigma _c^*)$$ ( Λ c , Σ c , Σ c ∗ ) , and $$(\Xi _c, \Xi _c^\prime ,\Xi _c^*)$$ ( Ξ c , Ξ c ′ , Ξ c ∗ ) . Using the $$P_c$$ P c states as inputs to fix the interaction strength of light quark-quark pairs, we reproduce the observed $$P_{cs}$$ P cs and $$T_{cc}^+$$ T cc + states and predict another narrow $$T_{cc}^{\prime +}$$ T cc ′ + state with quantum numbers $$[D^*D^*]_{J=1}^{I=0}$$ [ D ∗ D ∗ ] J = 1 I = 0 . If we require a satisfactory description of the $$T_{cc}^+$$ T cc + and $$P_c$$ P c states simultaneously, our framework prefers the assignments of the $$P_{c}(4440)$$ P c ( 4440 ) and $$P_{c}(4457)$$ P c ( 4457 ) as the $$[\Sigma _c{\bar{D}}^*]_{J=1/2}^{I=1/2}$$ [ Σ c D ¯ ∗ ] J = 1 / 2 I = 1 / 2 and $$[\Sigma _c{\bar{D}}^*]_{J=3/2}^{I=1/2}$$ [ Σ c D ¯ ∗ ] J = 3 / 2 I = 1 / 2 states, respectively. We propose the isospin criterion to explain naturally why the experimentally observed $$T_{cc}$$ T cc , $$P_c$$ P c , and $$P_{cs}$$ P cs molecular candidates prefer the lowest isospin numbers. We also predict the loosely bound states for the bottom di-hadrons.

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Section: T CC State and Other Heavy Flavor Molecular Statesmentioning

confidence: 88%

Systematics of the heavy flavor hadronic molecules

Chen

Meng

et al. 2022

Eur. Phys. J. C

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“…[1131], the authors found that the isoscalar Λ c Λc , Σ ( * ) c Σ( * ) c and isovector Λ c Σ( * ) c as well as their doubly charmed and doubly bottom counterparts are good candidates of the molecular hexaquarks. The calculations in various models [1132,581,1133,1134,1135,268,342,276,1136,1137,1138] In Ref. [393], the authors proposed an alternative way to determine the spins of the P c (4440) and P c (4457) from the spectrum of the Ξ ( * ) cc Σ ( * ) c systems with the help of lattice QCD [1140].…”

Section: Nξ ( * ) CC Systemsmentioning

confidence: 99%

Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

Li¹,

Wang²,

Wang³

et al. 2022

Preprint

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Chiral symmetry and its spontaneous breaking play an important role both in the light hadron and heavy hadron systems. In this work, we shall review the investigations on the chiral corrections to the properties of the heavy mesons and baryons within the framework of the chiral perturbation theory (χPT). We will also review the scatterings of the light pseudoscalar mesons and heavy hadrons. Moreover, the modern nuclear force was built upon the chiral effective field theory (χEFT). In the past decades many new hadron states were observed experimentally. A large group of these states are near-threshold resonances, such as the charged charmoniumlike Z c and Z cs states, bottomoniumlike Z b states, hidden-charm pentaquark P c and P cs states and the doubly charmed T cc state etc. They are very good candidates of the loosely bound molecular states composed of a pair of charmed hadrons. The same chiral dynamics not only governs the nuclei and forms the deuteron, but also dictates the above shallow bound states or resonances. We will perform an extensive review on the progress on the heavy hadronic molecular states within the framework of χEFT.

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“…The di-baryon systems that are composed of two charmed baryons are more likely to be bound, since the large reduced mass can facilitate the stabilization of such systems. As the heavy flavor siblings of the nucleon, the molecular states in the Σ c Σ c system have been investigated in a series of works [79][80][81][82][83][84][85]. In this work, we will mainly concentrate on the interactions of the Σ c Σ c system, and explore the relevance of intermediate states in the two-pion exchange (TPE) loops within the chiral effective field theory (χEFT).…”

Section: Introductionmentioning

confidence: 99%

$Σ_cΣ_c$ interactions in chiral effective field theory

Chen¹,

Huang²,

Wang³

et al. 2022

Preprint

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We study the interactions of the ΣcΣc system in the framework of chiral effective theory. We consider the contact, one-pion and two-pion exchange interactions and bridge the low energy constants of the ΣcΣc system to those of the Σ ( * ) c D( * ) systems through the quark-level ansatz for the contact interaction. We explore the influence of intermediate channels in the two-pion exchange diagrams of the ΣcΣc system. We obtain a deep bound state [ΣcΣc] I=0 J=0 and a shallow bound state [ΣcΣc] I=1 J=1 . As a byproduct, we further investigate the interactions of the ΛcΛc and ΛcΣc systems.

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Masses and strong decays of open charm hexaquark states $$\Sigma _{c}^{()}{\Sigma }_{c}^{()}$$

Abstract: Inspired by the recent discovery of the doubly charmed tetraquark state $$T_{cc}^{+}$$ T cc + by the LHCb Collaboration, we perform a systematic study of masses and strong decays of open charm hexaquark states $${\Sigma }_{c}^{()}\Sigma _{c}^{()}$$ Σ … Show more

Cited by 15 publications

References 108 publications

Systematics of the heavy flavor hadronic molecules

Systematics of the heavy flavor hadronic molecules

Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

$Σ_cΣ_c$ interactions in chiral effective field theory

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Masses and strong decays of open charm hexaquark states $$\Sigma _{c}^{(*)}{\Sigma }_{c}^{(*)}$$

Abstract: Inspired by the recent discovery of the doubly charmed tetraquark state $$T_{cc}^{+}$$ T cc + by the LHCb Collaboration, we perform a systematic study of masses and strong decays of open charm hexaquark states $${\Sigma }_{c}^{(*)}\Sigma _{c}^{(*)}$$ Σ … Show more

Cited by 15 publications

References 108 publications

Systematics of the heavy flavor hadronic molecules

Systematics of the heavy flavor hadronic molecules

Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

$Σ_cΣ_c$ interactions in chiral effective field theory

Contact Info

Product

Resources

About

Masses and strong decays of open charm hexaquark states $$\Sigma _{c}^{()}{\Sigma }_{c}^{()}$$

Abstract: Inspired by the recent discovery of the doubly charmed tetraquark state $$T_{cc}^{+}$$ T cc + by the LHCb Collaboration, we perform a systematic study of masses and strong decays of open charm hexaquark states $${\Sigma }_{c}^{()}\Sigma _{c}^{()}$$ Σ … Show more