Okuyama, H., Nishijima, S., Okada, T., Iwasaki, Y., Yasuda, J.
The compressive tests have been carried out on three dimensional reinforced plastics (3DGFRP) at cryogenic temperature aiming at practical application in the cryogenic apparatus. The results were...
Compressive Strength Under Shear Stress on 3D-FRP at Cryogenic Temperature. (9999)
Yasuda, J., Hirokawa, T., Iwasaki, Y., Nishijima, S., Okada, T.
Compressive tests have been made on three dimensional fabric reinforced plastics (3D-FRP) under sheared conditions at cryogenic temperatures aiming at the practical application as the spacer and/or...
The Characteristics of 3-D Orthogonal Woven Fabric Reinforced Composites 3-D (CF/EP). (9999)
Hirokawa, T., Yasuda, J., Iwasaki, Y., Noguchi, Y.
Mechanical properties of composites reinforced by two types of 3-D orthogonal woven fabric were compared to a 2-D laminate. The tensile, compressive, flexural fatigue and impact behavior of...
Performance of Deep Excavation in Sandy Ground Based upon Field Monitoring (9999)
Murayama,S., Honda,S., Kamine,Y., Tsudaka,M., Iwasaki,Y.
The authors present a case history of a deep excavation in sandy ground and report a result of observational construction control methods employed to a subway construction site at Fukuoka city. Two...
Light quark masses from unquenched lattice QCD (2007)
Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We calculate the light meson spectrum and the light quark masses by lattice QCD simulation, treating all light quarks dynamically and employing the Iwasaki gluon action and the nonperturbatively...
Search for Invisible Decay of the Υ(1S) (2007)
Tajima, O., Hayashii, H., Hazumi, M., Inami, K., Iwasaki, Y., Uehara, S., ...
We report results of a search for the invisible decay of the Υ(1S) via the Υ(3S)→π+π-Υ(1S) transition using a data sample of 2.9 fb^{-1} at the Υ(3S) resonance. The data were collected with...
First Nonperturbative Test of a Relativistic Heavy Quark Action in Quenched Lattice QCD (2006)
Kayaba, Y., Aoki, S., Fukugita, M., Iwasaki, Y., Kanaya, K., Kuramashi, Y., ...
We perform a numerical test of a relativistic heavy quark(RHQ) action, recently proposed by Tsukuba group, in quenched lattice QCD at $a\simeq 0.1$ fm. With the use of the improvement parameters...
Search for Invisible Decay of the $\Upsilon(1S)$ (2006)
Hayashii, H., Hazumi, M., Inami, K., Iwasaki, Y., Uehara, S.
We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)->pi+pi-Upsilon(1S) transition using a data sample of 2.9 fb^{-1} at the Upsilon(3S) resonance. The data...
Observation of B^+ → Λ^+_c Λ^－_c K^+ and B^0 → Λ^+_c Λ^－_c K^0 Decays (2006)
Gabyshev, N., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., ...
We report the first measurements of the doubly charmed baryonic B decays B → Λ^+_c Λ^-_c K. The B+ → Λ^+_c Λ^-_c K+ decay is observed with a branching fraction of (6.5^{+1.0}_{-0.9}...
Kaon $B$-parameters for Generic $\Delta S=2$ Four-Quark Operators in Quenched Domain Wall QCD (2006)
Aoki, S., Fukugita, M., Ishizuka, N., Iwasaki, Y., Kanaya, K., ...
We present a study of $B$-parameters for generic $\Delta S=2$ four-quark operators in domain wall QCD. Our calculation covers all the $B$-parameters required to study the neutral kaon mixing in the...
Aoki, S., Fukugita, M., Hashimoto, S., Ishizuka, N., ...
We present a summary of results of the joint CP-PACS and JLQCD project toward a 2+1 flavor full QCD simulation with the O(a)-improved Wilson quark formalism and the Iwasaki gauge action....
An estimate of the eta and eta-prime meson masses in Nf=2+1 lattice QCD (2006)
Aoki, JLQCD Collaborations: S., Fukugita, M., Ishikawa, T., Ishizuka, N., ...
Masses of the eta and eta-prime mesons are estimated in Nf=2+1 lattice QCD with the non-perturbatively O(a) improved Wilson quark action and the Iwasaki RG-improved gluon action, using CP-PACS/JLQCD...
Precision Electroweak Measurements on the Z Resonance (2006)
Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...
Precision Electroweak Measurements on the Z Resonance (2006)
Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...
Pion form factors in two-flavor QCD (2005)
Hashimoto, JLQCD Collaboration: S., Aoki, S., Fukugita, M., Ishizuka, N., Iwasaki, Y., ...
We present a calculation of pion electromagnetic and scalar form factors in two-flavor QCD with the non-perturbatively O(a)-improved Wilson fermion. Chiral extrapolation of the corresponding charge...
Kaon semileptonic decay form factors in two-flavor QCD (2005)
Tsutsui, JLQCD Collaboration: N., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We present a calculation of the kaon form factors in two-flavor QCD with the non-perturbatively $O(a)$-improved Wilson quark action. In order to achieve a few percent accuracy in the study of SU(3)...
Light hadron spectrum and quark masses in 2+1 flavor QCD (2005)
Ishikawa, JLQCD Collaborations: T., Aoki, S., Bär, O., Fukugita, M., Hashimoto, S., ...
CP-PACS and JLQCD collaborations are carrying out a joint project of the 2+1 flavor full QCD simulation. Gauge configurations are generated for the non-perturbatively $O(a)$-improved Wilson quark...
Aoki, JLQCD Collaborations: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We perform a nonperturbative determination of the $O(a)$-improvement coefficient $c_{\rm SW}$ and the critical hopping parameter $\kappa_c$ for $N_f$=3, 2, 0 flavor QCD with the RG-improved gauge...
I=2 Pion Scattering Length from Two-Pion Wave Functions (2005)
Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., Kanaya, K., ...
We calculate the two-pion wave function in the ground state of the I=2 $S$-wave system and find the interaction range between two pions, which allows us to examine the validity of the necessary...
Light hadron spectrum in 2+1 flavor full QCD by CP-PACS and JLQCD Collaborations (2004)
Ishikawa, T., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
CP-PACS and JLQCD Collaborations are carrying out a joint project of the 2+1 flavor full QCD with the RG-improved gauge action and the non-perturbatively ${\cal O}(a)$-improved Wilson quark action....
A scaling study of the step scaling function of quenched QCD with improved gauge actions (2004)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We study the scaling behavior of the step scaling function for SU(3) gauge theory, employing the Iwasaki gauge action and the Luescher-Weisz gauge action. In particular, we test the choice of...
Kayaba, Y., Aoki, S., Fukugita, M., Ishikawa, K-I., Iwasaki, Y., Kanaya, K., ...
We calculate charmed meson spectra and decay constants in lattice QCD employing one-loop $O(a)$ improved heavy quark action and axial-vector currents. In quenched simulations at $a \sim 0.1$ fm with...
I=2 Pion Scattering Length from Two-Pion Wave Function (2004)
Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., Kanaya, K., ...
We present a report on a calculation of scattering length for I=2 $S$-wave two-pion system from two-pion wave function. Calculations are made with an RG-improved action for gluons and improved Wilson...
Chiral extrapolations with small sea quark mass data in two-flavor lattice QCD (2004)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present results on the light hadron spectrum and quark mass in two-flavor QCD calculated with small sea quark masses down to $m_{PS}/m_{V}=0.35$. The configurations are generated using the RG...
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
Three-flavor QCD simulation with the $O(a)$-improved Wilson fermion action is made employing an exact fermion algorithm developed for odd number of quark flavors. For the plaquette gauge action, an...
Takeda, S., Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We study the scaling behavior of the step scaling function for SU(3) gauge theory, employing the renormalization-group improved Iwasaki gauge action and the perturbatively improved L\"uscher-Weisz...
Yamada, JLQCD Collaborations: N., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., ...
We perform a non-perturbative determination of the O(a)-improvement coefficient c_SW for the Wilson quark action in three-flavor QCD with the plaquette gauge action. Numerical simulations are carried...
Aoki, S., Burkhalter, R., Fukugita, M., Hashimoto, S., ...
Renormalization constants ($Z$-factors) of vector and axial-vector currents are determined non-perturbatively in quenched QCD for a renormalization group improved gauge action and a tadpole improved...
Light hadron spectroscopy in two-flavor QCD with small sea quark masses (2004)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We extend the study of the light hadron spectrum and the quark mass in two-flavor QCD to smaller sea quark mass, corresponding to $m_{PS}/m_{V}=0.60$--0.35. Numerical simulations are carried out...
I=2 $\pi\pi$ Scattering Phase Shift with two Flavors of $O(a)$ Improved Dynamical Quarks (2004)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present a lattice QCD calculation of phase shift including the chiral and continuum extrapolations in two-flavor QCD. The calculation is carried out for I=2 S-wave $\pi\pi$ scattering. The phase...
Lattice QCD calculation of the proton decay matrix element in the continuum limit (2004)
Tsutsui, JLQCD Collaborations: N., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., ...
We present a quenched lattice QCD calculation of the \alpha and \beta parameters of the proton decay matrix element. The simulation is carried out using the Wilson quark action at three values of the...
Non-perturbative calculation of $Z_V$ and $Z_A$ in domain-wall QCD on a finite box (2003)
Fukugita, M., Ishizuka, N., Iwasaki, Y., Kanaya, K., Kaneko, T., ...
We report on a non-perturbative evaluation of the renormalization factors for the vector and axial-vector currents, $Z_V$ and $Z_A$, in the quenched domain-wall QCD (DWQCD) with plaquette and...
Lattice QCD on Earth Simulator (2003)
Aoki, S., Iwasaki, Y., Kanaya, K., Kaneko, T., Kuramashi, Y., ...
We report on coding and performance of our polynomial hybrid Monte Carlo program on the Earth Simulator. At present the entire program achieves 25--40% efficiency. An analysis of overheads shows that...
Aoki, S., Fukugita, M., Ishizuka, N., Iwasaki, Y., Kanaya, K., ...
Renormalization constants of vector ($Z_V$) and axial-vector ($Z_A$) currents are determined non-perturbatively in quenched QCD for an RG-improved gauge action and a tadpole-improved clover quark...
Phase structure of lattice QCD for general number of flavors (2003)
Iwasaki, Y., Kanaya, K., Kaya, S., Sakai, S., Yoshie, T.
We investigate the phase structure of lattice QCD for the general number of flavors in the parameter space of gauge coupling constant and quark mass, employing the one-plaquette gauge action and the...
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present a calculation of the scattering phase shift for the I=2 S-wave pion-pion system in the continuum limit with two-flavor full QCD. Calculations are made at three lattice spacings, using the...
Aoki, S., Fukugita, M., Hashimoto, S., Ishizuka, N., ...
The non-perturbative $\csw$ determined by the Schr\"{o}dinger functional (SF) method with the RG-improved gauge action in dynamical $N_f=3$ QCD shows a finite volume effect when the numerical...
Continuum limit of proton decay matrix elements in quenched lattice QCD (2003)
Tsutsui, JLQCD Collaborations: N., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., ...
We present a lattice QCD calculation of the parameters \alpha and \beta which are necessary in the theoretical estimation of the proton lifetime in grand unified theories (GUTs) using chiral...
Light hadron spectrum in three-flavor QCD with O(a)-improved Wilson quark action (2003)
Kaneko, JLQCD Collaboration: T., Aoki, S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., ...
We report on a calculation of the light hadron spectrum and quark masses in three-flavor dynamical QCD using the non-perturbatively O(a)-improved Wilson quark action and a renormalization-group...
B-Bbar mixing in unquenched lattice QCD (2003)
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present an unquenched lattice calculation for the $B^0-\bar{B}^0$ transition amplitude. The calculation, carried out at an inverse lattice spacing $1/a$ = 2.22(4) GeV, incorporates two flavors of...
Heavy quark expansion parameters from lattice NRQCD (2003)
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present a lattice QCD calculation of the heavy quark expansion parameters $\mu_{\pi}^2$ and $\mu_G^2$ for heavy-light mesons and heavy-light-light baryons. The calculation is carried out on a...
Two flavors of dynamical quarks on anisotropic lattices (2003)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We report on our study of two-flavor full QCD on anisotropic lattices using $O(a)$-improved Wilson quarks coupled with an RG-improved glue. The bare gauge and quark anisotropies corresponding to the...
Light hadron spectroscopy with two flavors of $O(a)$-improved dynamical quarks (2002)
Aoki, JLQCD Collaboration: S., Burkhalter, R., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We present a high statistics study of the light hadron spectrum and quark masses in QCD with two flavors of dynamical quarks. Numerical simulations are carried out using the plaquette gauge action...
Results for the Etaprime Mass from Two-Flavor Lattice QCD (2002)
Lesk, V. I., Burkhalter, R., Fukugita, M., Ishizuka, N., Iwasaki, Y., ...
We present results for the mass of the etaprime meson for two-flavor lattice QCD in the continuum limit, calculated on the CP-PACS computer, using an RG-improved gauge action and clover fermion...
Flavor Singlet Meson Mass in the Continuum Limit in Two-Flavor Lattice QCD (2002)
Aoki, S., Burkhalter, R., Fukugita, M., Ishizuka, N., ...
We present results for the mass of the eta-prime meson in the continuum limit for two-flavor lattice QCD, calculated on the CP-PACS computer, using a renormalization-group improved gauge action, and...
Non-Perturbative Determination of $c_{\rm SW}$ in Three-flavor Dynamical QCD (2002)
Aoki, JLQCD Collaborations: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We present a fully non-perturbative determination of the $O(a)$ improvement coefficient $c_{\rm SW}$ in three-flavor dynamical QCD for the RG improved as well as the plaquette gauge actions, using...
I=2 Pion Scattering Phase Shift with Wilson Fermions (2002)
Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present a lattice QCD calculation of the scattering phase shift for the I=2 $S$-wave two-pion system using the finite size method proposed by L\"uscher. We work in the quenched approximation...
Chiral extrapolation of light-light and heavy-light decay constants in unquenched QCD (2002)
Hashimoto, JLQCD Collaboration: S., Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We test the one-loop chiral perturbation theory formula on unquenched lattice data of pseudoscalar meson decay constants. The chiral extrapolation including the effect of the chiral logarithm is...
Exploring QCD at small sea quark masses with improved Wilson-type quarks (2002)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We explore the region of small sea quark masses below $m_{PS}/m_V=0.5$ in two-flavor QCD using a mean-field improved clover quark action and an RG-improved gauge action at $a \simeq 0.2$ fm on $12^3...
An exact Polynomial Hybrid Monte Carlo algorithm for dynamical Kogut-Susskind fermions (2002)
Fukugita, M., Hashimoto, S., Ishizuka, N., Iwasaki, Y., Kanaya, K., ...
We present a polynomial Hybrid Monte Carlo (PHMC) algorithm as an exact simulation algorithm with dynamical Kogut-Susskind fermions. The algorithm uses a Hermitian polynomial approximation for the...
Dynamical fermions on anisotropic lattices (2002)
Aoki, S., Fukugita, M., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We report on our study of two-flavor full QCD on anisotropic lattices using $O(a)$-improved Wilson quarks coupled with an RG-improved glue. The bare gauge and quark anisotropies corresponding to the...
I=2 Pion Scattering Phase Shift with Wilson Fermions (2002)
Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present results of phase shift for I=2 $S$-wave $\pi\pi$ system with the Wilson fermions in the quenched approximation. The finite size method proposed by L\"uscher is employed, and calculations...
Kaneko, JLQCD Collaboration: T., Aoki, S., Burkhalter, R., Fukugita, M., Hashimoto, S., Ishikawa, K-I., ...
We present the final results of the JLQCD calculation of the light hadron spectrum and quark masses with two flavors of dynamical quarks using the plaquette gauge action and fully $O(a)$-improved...
An Exact Algorithm for Any-flavor Lattice QCD with Kogut-Susskind Fermion (2002)
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We propose an exact simulation algorithm for lattice QCD with dynamical Kogut-Susskind fermion in which the N_f-flavor fermion operator is defined as the N_f/4-th root of the Kogut-Susskind (KS)...
$B^0-\bar{B}^0$ mixing in quenched lattice QCD (2002)
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
We present our results of lattice calculations of $B$ parameters, which parameterize $\Delta B$=2 transition amplitudes together with the leptonic decay constant. Calculations are made in the...
I=2 Pion Scattering Length with the Wilson Fermion (2002)
Aoki, JLQCD Collaboration: S., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., Iwasaki, Y., ...
The calculation of the I=2 pion scattering length in quenched lattice QCD is revisited. The calculation is carried out with the Wilson fermion action employing L\"uscher's finite size scaling method...
Light Hadron Spectrum and Quark Masses from Quenched Lattice QCD (2002)
Boyd, G., Burkhalter, R., Ejiri, S., Fukugita, M., Hashimoto, S., ...
We present details of simulations for the light hadron spectrum in quenched QCD carried out on the CP-PACS parallel computer. Simulations are made with the Wilson quark action and the plaquette gauge...
Polynomial Hybrid Monte Carlo algorithm for lattice QCD with an odd number of flavors (2001)
Aoki, JLQCD Collaboration: S., Burkhalter, R., Fukugita, M., Hashimoto, S., Ishikawa, K-I., Ishizuka, N., ...
We present a polynomial hybrid Monte Carlo (PHMC) algorithm for lattice QCD with odd numbers of flavors of O(a)-improved Wilson quark action. The algorithm makes use of the non-Hermitian Chebyshev...
Charmonium Spectrum from Quenched Anisotropic Lattice QCD (2001)
Aoki, S., Burkhalter, R., Ejiri, S., Fukugita, M., Hashimoto, S., ...
We present a detailed study of the charmonium spectrum using anisotropic lattice QCD. We first derive a tree-level improved clover quark action on the anisotropic lattice for arbitrary quark mass....