M. Oka

activity

19932023

most citedScaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV

360 citations · 6.1k across the 180 of their papers we have counts for

collaborators

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26 papers · 1 filter

hep-lat2022★ 13 cited

The investigations of the $P$ -wave $B_{s}$ states combining quark model and lattice QCD in the coupled channel framework

Zhi Yang, Guang-Juan Wang, Jia-Jun Wu +2

Combining the quark model, the quark-pair-creation mechanism and $B^{(*)} K ˉ$ interaction, we have investigated the near-threshold $P$ -wave $B_{s}$ states in the framework of the…

hep-lat2020★ 11 cited

The negative-parity spin-1/2 $Λ$ baryon spectrum from lattice QCD and effective theory

Rafael Pavao, Philipp Gubler, Pedro Fernandez-Soler +3

The spectrum of the negative-parity spin-1/2 $Λ$ baryons is studied using lattice QCD and hadronic effective theory in a unitarized coupled-channel framework. A direct comparison b…

hep-lat2020★ 54 cited

Charmed baryon spectrum from lattice QCD near the physical point

Huseyin Bahtiyar, Kadir Utku Can, Guray Erkol +3

We calculate the low-lying spectrum of charmed baryons in lattice QCD on the $3 2^{3} \times 64$ , $N_{f} = 2 + 1$ PACS-CS gauge configurations at the almost physical pion mass of $\sim 156$ M…

hep-lat2018★ 41 cited

Radiative transitions of doubly charmed baryons in lattice QCD

H. Bahtiyar, K. U. Can, G. Erkol +2

We evaluate the spin- $3/2 \to$ spin- $1/2$ electromagnetic transitions of the doubly charmed baryons on 2+1 flavor, $3 2^{3} \times 64$ PACS-CS lattices with a pion mass of $156 (9)$ Me…

hep-lat2018

Non-perturbative evaluation for anomalous dimension in 2-dimensional O(3) sigma model

Sergio Calle Jimenez, Makoto Oka, Kiyoshi Sasaki

We calculate the wave-function renormalization in 2-dimensional O(3) sigma model, non- perturbatively. It is evaluated in a box with a finite spatial extent. We determine the anoma…

hep-lat2016★ 18 cited

Flavor structure of $Λ$ baryons from lattice QCD: From strange to charm quarks

Philipp Gubler, Toru T. Takahashi, Makoto Oka

We study $Λ$ baryons of spin-parity $\frac{1}{2}^{\pm}$ with either a strange or charm valence quark in full 2+1 flavor lattice QCD. Multiple $S U (3)$ singlet and octet operators ar…

hep-lat2013★ 59 cited

Scattering lengths for two pseudoscalar meson systems

Kiyoshi Sasaki, Naruhito Ishizuka, Makoto Oka +1

Scattering lengths for two pseudoscalar meson systems, $π π (I = 2)$ , $K K (I = 1)$ and $π K (I = 3/2, 1/2)$ , are calculated from lattice QCD by using the finite size formula. We perform the…

hep-lat2012★ 80 cited

Vector and axial-vector couplings of D and D* mesons in 2+1 flavor Lattice QCD

K. U. Can, G. Erkol, M. Oka +2

Using the axial-vector coupling and the electromagnetic form factors of the D and D* mesons in 2+1 flavor Lattice QCD, we compute the D*Dπ, DDρand D*D*ρcoupling constants, which pl…

hep-lat2010★ 5 cited

$Λ (1405)$ from lattice QCD

Toru T. Takahashi, Makoto Oka

Low-lying $Λ$ baryons with spin 1/2 are analyzed in two-flavor lattice QCD. In order to extract two low-lying states for each parity, we construct $2 \times 2$ cross correlators fr…

hep-lat2009

Two-flavor lattice QCD study of $Λ$ (1405)

Toru T. Takahashi, Makoto Oka

Low-lying $Λ$ baryons with spin 1/2 are analyzed in two-flavor unquenched lattice QCD. We construct $2 \times 2$ cross correlators from flavor SU(3) ``octet'' and ``singlet'' baryo…

hep-lat2009★ 1 cited

S-wave pi-K scattering length from lattice QCD

Kiyoshi Sasaki, Naruhito Ishizuka, Takeshi Yamazaki +2

The $S$ -wave $π K$ scattering lengths are calculated for both the isospin 1/2 and 3/2 channels in the lattice QCD by using the finite size formula. We perform the calculation with $…

hep-lat2009★ 20 cited

Low-lying $Λ$ Baryons with spin 1/2 in Two-flavor Lattice QCD

Toru T. Takahashi, Makoto Oka

Low-lying $Λ$ baryons with spin 1/2 are analyzed in full (unquenched) lattice QCD. We construct $2 \times 2$ cross correlators from flavor SU(3) "octet" and "singlet" baryon operat…

hep-lat2008★ 18 cited

Pseudoscalar-meson--octet-baryon coupling constants in two-flavor lattice QCD

G. Erkol, M. Oka, T. T. Takahashi

We evaluate the $π N! N$ , $π ΣΣ$ , $π ΛΣ$ , $K Λ N$ and $K Σ N$ coupling constants and the corresponding monopole masses in lattice QCD with two flavors of dynamical quarks. The parameters…

hep-lat2007★ 13 cited

Five-quark picture of Lambda(1405) in anisotropic lattice QCD

Noriyoshi Ishii, Takumi Doi, Makoto Oka +1

Five-quark (5Q) picture of Lambda(1405) is studied using quenched lattice QCD with an exotic 5Q operator of N\bar{K} type. To discreminate mere N\bar{K} and Σπscattering states, Hy…

hep-lat2006★ 2 cited

Anisotropic lattice QCD studies of penta-quarks and tetra-quarks

N. Ishii, T. Doi, H. Iida +4

Anisotropic lattice QCD studies of penta-quarks(5Q) with J^P=1/2^\pm and 3/2^{\pm} are presented at the quenched level together with tetra-quarks(4Q). The standard gauge action at…

hep-lat2005

Anisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel

Takumi Doi, Noriyoshi Ishii, Yukio Nemoto +2

We perform the comprehensive analysis of the pentaquark (5Q) in J^P=3/2^{\pm} channel using anisotropic quenched lattice QCD. We employ the standard Wilson gauge action at β=5.75 a…

hep-lat2005★ 20 cited

Spin 3/2 Penta-quarks in anisotropic lattice QCD

N. Ishii, T. Doi, Y. Nemoto +2

A high-precision mass measurement for the pentaquark (5Q) Theta^+ in J^P=3/2^{\pm} channel is performed in anisotropic quenched lattice QCD using a large number of gauge configurat…

hep-lat2004

Penta-Quark Anti-Decuplet in Anisotropic Lattice QCD

N. Ishii, T. Doi, H. Iida +3

The penta-quark(5Q) Theta^+(1540) is studied in anisotropic lattice QCD with renormalized anisotropy a_s/a_t=4 for a high-precision measurement. Both the positive and the negative…

hep-lat2004★ 8 cited