Refine your search:     
Report No.
 - 
Search Results: Records 1-6 displayed on this page of 6
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Heavy hadronic molecules coupled with multiquark states

Yamaguchi, Yasuhiro; Garc$'i$a-Tecocoatzi, H.*; Giachino, A.*; Hosaka, Atsushi; Santopinto, E.*; Takeuchi, Sachiko*; Takizawa, Makoto*

Few-Body Systems, 62(3), p.33_1 - 33_7, 2021/09

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

We investigate the hidden-charm pentaquarks as hadronic molecules of $$Lambda_cbar{D}^{(ast)}$$ and $$Sigma_c^{(ast)}bar{D}^{(ast)}$$ coupled to a $$uudcbar{c}$$ compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of $$P_c^+(4312)$$, $$P_c^+(4440)$$ and $$P_c^+(4457)$$ with spin parity assignments $$J^P=1/2^-$$, $$3/2^-$$ and $$1/2^-$$, respectively. We find that the mass ordering is dominantly determined by the short-range interaction given by coupling to the compact core, while the decay widths by the tensor force of the one-pion exchange.

Journal Articles

Strange pentaquarks with a hidden heavy quark-antiquark pair

Takeuchi, Sachiko*; Giachino, A.*; Takizawa, Makoto*; Santopinto, E.*; Oka, Makoto

Hadron Spectroscopy and Structure; Proceedings of the 18th International Conference (HADRON 2019), p.333 - 337, 2020/08

Pentaquarks with $$c bar{c}$$ or $$b bar{b}$$ heavy quarks are very much interesting. We analyze the strange pentaquark with $$c bar{c}$$ or $$b bar{b}$$ in the coupled-channel quark cluster model. We find bound, resonance and cusp like states.

Journal Articles

$$P_c$$ pentaquarks with chiral tensor and quark dynamics

Yamaguchi, Yasuhiro; Garc$'i$a-Tecocoatzi, H.*; Giachino, A.*; Hosaka, Atsushi; Santopinto, E.*; Takeuchi, Sachiko*; Takizawa, Makoto*

Physical Review D, 101(9), p.091502_1 - 091502_7, 2020/05

 Times Cited Count:19 Percentile:96.13(Astronomy & Astrophysics)

We investigate the hidden-charm pentaquarks as hadronic molecules of $$Lambda_cbar{D}^{(ast)}$$ and $$Sigma_c^{(ast)}bar{D}^{(ast)}$$ coupled to a $$uudcbar{c}$$ compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of $$P_c^+(4312)$$, $$P_c^+(4440)$$ and $$P_c^+(4457)$$ with spin parity assignments $$J^P=1/2^-$$, $$3/2^-$$ and $$1/2^-$$, respectively. We find that the mass ordering is dominantly determined by the short-range interaction given by coupling to the compact core, while the decay widths by the tensor force of the one-pion exchange.

Oral presentation

$$P_c$$ pentaquarks as a hadronic molecule coupling to five-quark states

Yamaguchi, Yasuhiro; Hosaka, Atsushi; Takeuchi, Sachiko*; Takizawa, Makoto*

no journal, , 

We study the $$P_c$$ pentaquarks that were reported by LHCb collaboration in 2019. We employ the hadronic molecular model where the one pion exchange potential is introduced as the long-range hadron interaction. As for the short-range interaction, we introduce coupling to the five-quark states in the hadronic molecule. By solving the Schrodinger equation by using the variational method and the complex scaling method, we obtain the energies and decay widths. We also discuss the role of the tensor force and the short-range interaction.

Oral presentation

Strange hidden-charm pentaquarks with the meson exchange potential and coupling to the five-quark states

Yamaguchi, Yasuhiro; Hosaka, Atsushi; Takeuchi, Sachiko*; Takizawa, Makoto*

no journal, , 

Recently, the exotic hadrons considered to be a pentaquark have been reported in the LHCb experiments. In this talk, we study the $$P_{cs}$$ states as the hadronic molecule of a heavy meson and heavy baryon, where the pseudoscalar-meson exchange potential and the coupling to the compact five-quark states are introduced. We compute an energy and a decay width, and discuss a role of the interactions introduced.

Oral presentation

$$X(3872)$$ in the hybrid model of charmonium and hadronic molecule

Yamaguchi, Yasuhiro; Takeuchi, Sachiko*; Takizawa, Makoto*; Hosaka, Atsushi

no journal, , 

$$X(3872)$$ has been known as a candidate of the exotic hadron, while the nature has not been understood yet. The mass spectrum of $$X(3872)$$, near the $$D^0bar{D}^{ast 0}$$ threshold, indicates the $$D^0bar{D}^{ast 0}$$ composite structure, so called a hadronic molecule. On the other hand, measurements of the production ratio prefer the compact $$cbar{c}$$ structure. To understand the nature of $$X(3872)$$, we employ the hybrid model with the charmonium $$(cbar{c})$$ and hadronic molecular components, and study a mass spectrum and decay properties. The model reasonably reproduces the $$X(3872)$$ spectrum, where the $$cbar{c}-D^0bar{D}^{ast 0}$$ coupling plays an important role. We also introduce the $$J/psirho$$ and $$J/psiomega$$ molecular components and find that the finite width of $$rho$$ and $$omega$$ is important to explain the pole position appearing above the $$D^0bar{D}^{ast 0}$$ threshold.

6 (Records 1-6 displayed on this page)
  • 1