112 citations · 986 across the 26 of their papers we have counts for
26 papers
X(3872) revisited: the roles of OPEP and the quark degrees of freedom
Sachiko Takeuchi, Yasuhiro Yamaguchi, Atsushi Hosaka +1
The is investigated by employing the quark-hadron hybrid model, that consists of the core, , , and two-meson states. Due to the…
Open charm and bottom meson-nucleon potentials à la nuclear force
Yasuhiro Yamaguchi, Shigehiro Yasui, Atsushi Hosaka
We discuss the interaction of an open heavy meson ( and for charm or and for bottom) and a nucleon () by considering the , , ,…
Substructure of Multiquark Hadrons (Snowmass 2021 White Paper)
Nora Brambilla, Hua-Xing Chen, Angelo Esposito +27
In recent years there has been a rapidly growing body of experimental evidence for existence of exotic, multiquark hadrons, i.e. mesons which contain additional quarks, beyond the…
Large long-distance contributions to the electric dipole moments of charged leptons in the standard model
Yasuhiro Yamaguchi, Nodoka Yamanaka
We reevaluate the electric dipole moment (EDM) of charged leptons in the standard model using hadron effective models. We find unexpectedly large EDM generated by the hadron level…
Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
Yasuhiro Yamaguchi, Atsushi Hosaka, Sachiko Takeuchi +1
We discuss selected and important features of hadronic molecules as one of promising forms of exotic hadrons near thresholds. Using examples of systems such as $X(3872…
pentaquarks with chiral tensor and quark dynamics
Yasuhiro Yamaguchi, Hugo Garcia-Tecocoatzi, Alessandro Giachino +4
We investigate the hidden-charm pentaquarks as superpositions of and (isospin ) meson-baryon channels coupled to a $uudc\bar{…
Heavy quark spin multiplet structure of , , and
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
Very recently, the LHCb collaboration has reported the new result about the hidden-charm pentaquarks: near the threshold, and and n…
Heavy quark spin multiplet structure of -like pentaquark as P-wave hadronic molecular state
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
We study the heavy quark spin (HQS) multiplet structure of P-wave -type pentaquarks treated as molecules of a heavy meson and a heavy baryon. We define the light-cloud…
Heavy quark spin multiplet structure of molecular states
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
We study the structure of heavy quark spin (HQS) multiplets for heavy meson-baryon molecular states in a coupled system of , with constructing the one-pio…
Hidden-charm and bottom meson-baryon molecules coupled with five-quark states
Yasuhiro Yamaguchi, Alessandro Giachino, Atsushi Hosaka +3
In this paper, we investigate the hidden-charm pentaquarks as and molecules coupled to the five-quark states. Furth…
Mesic nuclei with a heavy antiquark
Yasuhiro Yamaguchi, Shigehiro Yasui
The binding system of a hadron and a nucleus is a topic of great interest for investigating the hadron properties. In the heavy-flavor region, the attraction between a $P(=\bar{D},…
Quark mass dependence of H-dibaryon
Yasuhiro Yamaguchi, Tetsuo Hyodo
The H-dibaryon is the exotic multiquark state with baryon number 2 and strangeness . The existence of the deeply bound H-dibaryon is excluded by the observation of the double h…
Hidden-charm pentaquarks as a meson-baryon molecule with coupled channels for and
Yasuhiro Yamaguchi, Elena Santopinto
The recent observation of two hidden-charm pentaquark states by LHCb collaborations prompted us to investigate the exotic states close to the , $\bar{D}^{\ast}Λ_{…
Quark mass dependence of H-dibaryon in scattering
Yasuhiro Yamaguchi, Tetsuo Hyodo
We study the quark mass dependence of the H-dibaryon in the strangeness baryon-baryon scattering. A low-energy effective field theory is used to describe the coupled-channel…
Heavy Hadrons in Nuclear Matter
Atsushi Hosaka, Tetsuo Hyodo, Kazutaka Sudoh +2
Current studies on heavy hadrons in nuclear medium are reviewed with a summary of the basic theoretical concepts of QCD, namely chiral symmetry, heavy quark spin symmetry, and the…
Holographic Heavy Quark Symmetry
Koji Hashimoto, Noriaki Ogawa, Yasuhiro Yamaguchi
We investigate the heavy quark spin symmetry, i.e. the mass degeneracy of pseudo-scalar and vector quarkonia at heavy quark limit, by using the gauge/gravity correspondence. We all…
Exotic dibaryons with a heavy antiquark
Yasuhiro Yamaguchi, Shigehiro Yasui, Atsushi Hosaka
We discuss the possible existence of exotic dibaryons with a heavy antiquark, being realized three-body systems, Dbar^(*)NN and B^(*)NN. These are genuinely exotic states with no q…
Hadronic molecules for charmed and bottom baryons near thresholds
Yasuhiro Yamaguchi, Shunsuke Ohkoda, Shigehiro Yasui +1
We study hadronic molecules formed by a heavy meson and a nucleon, DN and D*N (BbarN and Bbar*N) systems. Respecting the heavy quark symmetry and chiral symmetry, we consider the D…
Decays and productions via bottomonium for Z_b resonances and other B anti-B molecules
Shunsuke Ohkoda, Yasuhiro Yamaguchi, Shigehiro Yasui +1
We discuss decays and productions for the possible molecular states formed by bottom mesons B (B*) and anti-B (anti-B*). The twin resonances found by Belle, Zb(10610) and Zb(10650)…
Exotic baryons from a heavy meson and a nucleon
Yasuhiro Yamaguchi, Shunsuke Ohkoda, Shigehiro Yasui +1
We evaluate a hadronic molecule formed by a heavy meson and a nucleon respecting heavy quark symmetry. The tensor force of pion exchange potential plays a dominate role to produce…
Exotic mesons with double charm and bottom flavor
Shunsuke Ohkoda, Yasuhiro Yamaguchi, Shigehiro Yasui +2
We study exotic mesons with double charm and bottom flavor, whose quark configuration is \bar{Q}\bar{Q}qq. This quark configuration has no annihilation process of quark and antiqua…
Exotic baryons from a heavy meson and a nucleon - Positive parity states -
Yasuhiro Yamaguchi, Shunsuke Ohkoda, Shigehiro Yasui +1
We study heavy baryons with exotic flavor quantum numbers formed by a heavy meson and a nucleon (DbarN and BN) with positive parity. One pion exchange interaction, providing a tens…
Hadron resonances with coexistence of different natures
Atsushi Hosaka, Tetsuo Hyodo, Daisuke Jido +6
We discuss coexistence/mixing of different natures of hadronic composite (molecule) and elementary (quark-intrinsic) ones in hadron resonances. The discussions here are based on ou…
Exotic baryons from a heavy meson and a nucleon -- Negative parity states --
Yasuhiro Yamaguchi, Shunsuke Ohkoda, Shigehiro Yasui +1
We study heavy baryons with an exotic flavor quantum number formed by a heavy meson and a nucleon (Dbar-N and B-N) through a long range one pion exchange interaction. The bound sta…