360 citations · 6.1k across the 180 of their papers we have counts for
33 papers · 1 filter
Doubly heavy tetraquarks including one-pion exchange potential
Qi Meng, Emiko Hiyama, Makoto Oka +2
Spectrum of the doubly heavy tetraquarks is studied in a constituent quark model including one-pion exchange (OPE) potential. Central and tensor forces induced by OPE between two l…
Spin-Flavor SU(6) Symmetry for Baryon-Baryon Interactions
Makoto Oka
Short-range parts of the baryon-baryon () interactions are analyzed from the spin-flavor symmetry viewpoint. Due to the Pauli princip…
Weinberg operator contribution to the CP-odd nuclear force in the quark model
Nodoka Yamanaka, Makoto Oka
The contribution of the CP violating three-gluon interaction, proposed by Weinberg, to the short-range CP-odd nuclear force is evaluated in the nonrelativistic quark model. We firs…
Stable double-heavy tetraquarks: spectrum and structure
Q. Meng, E. Hiyama, A. Hosaka +5
Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(J^P ) = 0(1^+) in the bb\bar{u}\bar{d} c…
Signatures of the vortical quark-gluon plasma in hadron yields
P Collaboration, Hidetoshi Taya, Aaron Park +10
We investigate the hadron production from the vortical quark-gluon plasma created in heavy-ion collisions. Based on the quark-coalescence and statistical hadronization models, we s…
Compact pentaquark states predicted by a quark model
Qi Meng, Emiko Hiyama, Kadir Utku Can +4
Several compact pentaquark resonances are predicted in a potential quark model. The Hamiltonian is the best available one, which reproduces the masses of the low-lying…
Quark model estimate of hidden-charm pentaquark resonances
Emiko Hiyama, Atsushi Hosaka, Makoto Oka +1
A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the configurations, where is a light quark and~…
Resonance in the potential model
Saori Maeda, Makoto Oka, Yan-Rui Liu
We calculate two-body , and resonance states of (, , or ) and using the complex scaling method. We employ the $…
Properties of non-local wave function equivalent potential with generalized derivative expansion
Takuya Sugiura, Keiko Murano, Noriyoshi Ishii +1
We examine the properties of the wave-function-equivalent potentials which HAL QCD collaboration has introduced. We generalize the derivative expansion, and then apply it to energy…
Derivative Expansion of Wave Function Equivalent Potentials
Takuya Sugiura, Noriyoshi Ishii, Makoto Oka
Properties of the wave function equivalent potentials introduced by HAL QCD collaboration are studied in a non-relativistic coupled-channel model. The derivative expansion is gener…
Theoretical study of the Xi(1620) and Xi(1690) resonances in Xi_c -> pi^+ MB decays
Kenta Miyahara, Tetsuo Hyodo, Makoto Oka +2
Nonleptonic weak decays of Xi_c into pi^+ and a meson (M)-baryon (B) final state, MB, are analyzed from the viewpoint of probing S=-2 baryon resonances, i.e. Xi(1620) and Xi(1690),…
A model of charmed baryon-nucleon potential and 2- and 3-body bound states with charmed baryon
Saori Maeda, Makoto Oka, Akira Yokota +2
A potential model for the interaction between a charmed baryon (, , and ) and the nucleon () is constructed. The model contains a long-range meson ( and )…
The radiative capture reaction rate from to H dibaryon in the imaginary time method
E. Hikota, Y. Funaki, E. Hiyama +1
Radiative capture rates of thermal N states into H dibaryon are calculated in the novel imaginary time method. The H dibaryon is assumed to be a bound state of N with spi…
Possible Existence of Charmonium-Nucleus Bound States
Akira Yokota, Emiko Hiyama, Makoto Oka
Possible existence of nucleus bound states are examined. We adopt Gaussian potentials for the and interactions. The relations between the scattering…
Meson-induced pentaquark productions
Tetsuo Hyodo, Atsushi Hosaka, Makoto Oka
Production cross sections of the pentaquark Theta+ baryon in the meson-induced reactions are calculated for JP=1/2+- and 3/2+- cases. Through the comparison with the previous measu…
The Lambda* N interaction and two-body bound state based on chiral dynamics
Toshitaka Uchino, Tetsuo Hyodo, Makoto Oka
The interaction of Lambda*=Lambda(1405) with a nucleon is studied from the viewpoint of chiral dynamics. We construct the coordinate space Lambda* N potential in the meson-exchange…
Determination of the pi Sigma scattering lengths from the weak decays of Lambda_c
Tetsuo Hyodo, Makoto Oka
The scattering lengths of the pi Sigma systems are key quantities in understanding the structure of the Lambda(1405) resonance and the subthreshold extrapolation of the barK N inte…
Finite-width effects on Delta baryons in QCD Sum Rules
G. Erkol, M. Oka
The quantum chromodynamics (QCD) sum rules for the Delta baryons are analyzed by taking into account the finite-width effects, through explicit utilization of the Breit-Wigner shap…
Λ^{\ast}-hypernuclei in phenomenological nuclear forces
A. Arai, M. Oka, S. Yasui
The -hypernuclei, which are bound states of and nuclei, are discussed as a possible interpretation of the -nuclei. The Bonn and Nijmegen potentials are…
Scalar-Meson - Baryon Coupling Constants in QCD Sum Rules
G. Erkol, M. Oka, Th. A. Rijken +1
The external-field QCD Sum Rules method is used to evaluate the coupling constants of the light-isoscalar scalar meson (``σ'' or ε) to the Λ, Σ, and Ξbaryons. It is shown that thes…
Models of the Nonmesonic Weak Decay
Makoto Oka
I review the current status of understanding the mechanism of the nonmesonic weak decays (NMWD) of hypernuclei. Long standing problem on the Gamma_n/Gamma_p ratio has been solved b…
A quark model analysis of the charge symmetry breaking in nuclear force
Takashi Nasu, Makoto Oka, Sachiko Takeuchi
In order to investigate the charge symmetry breaking (CSB) in the short range part of the nuclear force, we calculate the difference of the masses of the neutron and the proton, $Δ…
The Weak Transition in Double- Hypernuclei
K. Sasaki, T. Inoue, M. Oka
We calculate the transition rate of He by the hybrid picture, the and exchanges plus the direct quark processes. It is found that the hyper…
Meson-baryon couplings and the ratio from QCD sum rules
Hungchong Kim, Takumi Doi, Makoto Oka +2
Motivated by the recent work on the calculation of the coupling constant using QCD sum rule beyond the chiral limit, we construct the corresponding sum rules for the coupling…