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Yamaguchi, Yasuhiro; Garc
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：1 Percentile：0(Physics, Multidisciplinary)We investigate the hidden-charm pentaquarks as hadronic molecules of 
and 
coupled to a 
compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of 
, 
and 
with spin parity assignments 
, 
and 
, 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.
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 
or 
heavy quarks are very much interesting. We analyze the strange pentaquark with or in the coupled-channel quark cluster model. We find bound, resonance and cusp like states.
Yamaguchi, Yasuhiro*; Hosaka, Atsushi; Takeuchi, Sachiko*; Takizawa, Makoto*
Journal of Physics G; Nuclear and Particle Physics, 47(5), p.053001_1 - 053001_67, 2020/05
Times Cited Count：43 Percentile：88.76(Physics, Nuclear)
pentaquarks with chiral tensor and quark dynamicsYamaguchi, Yasuhiro; Garca-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：46 Percentile：95.34(Astronomy & Astrophysics)We investigate the hidden-charm pentaquarks as hadronic molecules of and coupled to a compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of , and with spin parity assignments , and , 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.
Giachino, A.*; Hosaka, Atsushi; Santopinto, E.*; Takeuchi, Sachiko*; Takizawa, Makoto*; Yamaguchi, Yasuhiro*
Recent Progress in Few-Body Physics; Springer Proceedings in Physics, Vol.238, p.621 - 627, 2020/01
Times Cited Count：3 Percentile：94.26(Quantum Science & Technology)Yamaguchi, Yasuhiro*; Giachino, A.*; Hosaka, Atsushi; Santopinto, E.*; Takeuchi, Sachiko*; Takizawa, Makoto*
Physical Review D, 96(11), p.114031_1 - 114031_25, 2017/12
Times Cited Count：52 Percentile：91.2(Astronomy & Astrophysics) pentaquarks as a hadronic molecule coupling to five-quark statesYamaguchi, Yasuhiro; Hosaka, Atsushi; Takeuchi, Sachiko*; Takizawa, Makoto*
no journal, ,
We study the 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.
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 
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.
in the hybrid model of charmonium and hadronic moleculeYamaguchi, Yasuhiro; Takeuchi, Sachiko*; Takizawa, Makoto*; Hosaka, Atsushi
no journal, ,
has been known as a candidate of the exotic hadron, while the nature has not been understood yet. The mass spectrum of , near the 
threshold, indicates the composite structure, so called a hadronic molecule. On the other hand, measurements of the production ratio prefer the compact 
structure. To understand the nature of , we employ the hybrid model with the charmonium 
and hadronic molecular components, and study a mass spectrum and decay properties. The model reasonably reproduces the spectrum, where the 
coupling plays an important role. We also introduce the 
and 
molecular components and find that the finite width of 
and 
is important to explain the pole position appearing above the threshold.
