96 citations · 394 across the 11 of their papers we have counts for
11 papers
Decays of Zb -> Upsilon + pi via triangle diagrams in heavy meson molecules
Shunsuke Ohkoda, Shigehiro Yasui, Atsushi Hosaka
Bottomonium-like resonances Zb(10610) and Zb'(10650) are good candidates of hadronic molecules composed of BBbar* (or B*Bbar) and B*Bbar*, respectively. Considering Zb (Zb') as hea…
Spin degeneracy in multi-hadron systems with a heavy quark
S. Yasui, K. Sudoh, Y. Yamaguchi +3
We study multi-hadron systems with a single heavy quark (charm or bottom) in the limit of heavy quark mass. The spin degeneracy of the states with quantum numbers and…
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 mesons with hidden charm and bottom near thresholds
Shunsuke Ohkoda, Y. Yamaguchi, S. Yasui +2
We study heavy hadron spectroscopy near heavy meson thresholds. We employ heavy pseudoscalar meson P and heavy vector meson P* as effective degrees of freedom and consider meson ex…
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…
Exotic mesons with hidden bottom near thresholds
Shunsuke Ohkoda, Yasuhiro Yamaguchi, Shigehiro Yasui +2
We study heavy hadron spectroscopy near open bottom thresholds. We employ B and B* mesons as effective degrees of freedom near the thresholds, and consider meson exchange potential…
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…