High Energy Accelerator Research Organization

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19912026

most citedEvidence for oscillation of atmospheric neutrinos

5.1k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1997Show all

106 papers · 1 filter

hep-ph1997★ 26 cited

Quark Mass Matrices in Superstring Models

T. Kobayashi, Z. Z. Xing

Four simple but realistic patterns of quark mass matrices are derived from orbifold models of superstring theory in the absence of gauge symmetries. Two of them correspond to the R…

hep-ex1997★ 13 cited

Observation of Hadronic W Decays in t-tbar Events with the Collider Detector at Fermilab

F. Abe

We observe hadronic W decays in t-tbar -> W (-> l nu) + >= 4 jet events using a 109 pb-1 data sample of p-pbar collisions at sqrt{s} = 1.8 TeV collected with the Collider Detector…

hep-lat1997★ 6 cited

Quenched staggered light hadron spectroscopy from $4 8^{3} \times 64$ at $β = 6.5$

Seyong Kim, Shigemi Ohta

We report our light hadron mass calculation based on an increased statistics of 250 quenched gauge configurations on a (48^3 \times 64) lattice at (β= 6.5). Quark propagators are c…

hep-th1997★ 3 cited

BPS Saturation from Null Reduction

Reinhold W. Gebert, Shun'ya Mizoguchi

We show that any $d$ -dimensional strictly stationary, asymptotically Minkowskian solution $(d \geq 4)$ of a null reduction of $d + 1$ -dimensional pure gravity must saturate the BPS bou…

hep-ph1997★ 1 cited

Closing the light gluino window

Ferenc Csikor, Zoltan Fodor

The running of the strong coupling constant, $R_{e^{+} e^{-}}, R_{Z}$ and $R_{τ}$ is studied on the three-loop level. Based on experimental data of $R_{e^{+} e^{-}}, R_{Z}$ and $R_{τ}$ and the LEP mul…

hep-ex1997★ 44 cited

Measurement of the B0 B0-bar oscillation frequency using pi-B meson charge-flavor correlations in p p-bar collisions at sqrt{s} = 1.8 TeV

CDF Collaboration, F. Abe et. al

We present a measurement of the B0 B0-bar oscillation frequency using a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in…

hep-ph1997★ 1 cited

Relation between Scattering and Production Amplitude - Case of Intermediate σ-Particle in ππ-System

Muneyuki Ishida, Shin Ishida, Taku Ishida

The relation between scattering and production amplitudes are investigated, using a simple field theoretical model, from the general viewpoint of unitarity and the applicability of…

hep-ph1997

σ-Particle in Production Processes

Kunio Takamatsu, Muneyuki Ishida, Shin Ishida +2

A S-wave ππresonance below 1 GeV/c^2, sigma has been observed in analyses of the phase shift data of ππscatterings. It is important to observe it in production processes. A huge ev…

hep-ph1997

Re-analysis of ππ/ KπPhase Shift and Existence of σ$(600) / κ(900)-Particle

Taku Ishida, Muneyuki Ishida, Shin Ishida +2

Re-analyzing the old phase shift data of I=0, ππ(I=1/2, Kπ) scattering, we show an evidence for existence of the σ-particle (κ-particle) with a comparatively light mass, which has…

hep-ph1997★ 4 cited

Constraints on Non-Standard Contributions to the Charged-Current Interactions

Kaoru Hagiwara, Seiji Matsumoto

The success of the quantum level predictions of the Standard Model on the $Z$ boson properties, on $\mw$ and on $\mt$, which makes use of the muon lifetime as an input, implies a s…

hep-ph1997★ 6 cited

Direct CP violation in three-body decays of the $B$ meson by resonance effects

Ryoji Enomoto, Yasuhiro Okada, Yasuhiro Shimizu

We discuss direct CP violation in three-body decays of $B$ meson such as $B^{\pm} \to K^{\pm} π^{+} π^{-}$ , which involves various intermediate resonance states, such as $B^\pm \to K^*_i π^\…

chao-dyn1997

Spontaneous Decoherence in Coupled Quantum Kicked Rotators

N. Tsuda, T. Yukawa

Quantum mechanical behavior of coupled N-kicked rotators is studied. In the large N limit each rotator evolves under influence of the mean-field generated by surrounding rotators.…

hep-ph1997★ 4 cited

Domain wall solution for vector like model

Tomohiro Matsuda

Domain wall solution for $N_{c} = N_{f}$ supersymmetric QCD is constructed. Astrophysical implications of the domain wall configuration is also discussed.

hep-lat1997★ 3 cited

B meson decay constant with the Wilson and Clover heavy quark actions

JLQCD collaboration, S. Aoki, M. Fukugita +8

We present results of our quenched study of the B meson decay constant obtained with a parallel set of simulations with the Wilson and Clover actions at β=5.9, 6.1 and 6.3. Systema…

hep-ph1997★ 117 cited

Atmospheric Neutrino Oscillation and Large Lepton-Flavour Violation in the SUSY SU(5) GUT

J. Hisano, Daisuke Nomura, T. Yanagida

The atmospheric neutrino anomaly reported by the super-Kamiokande collaboration suggests existence of a large flavour violating Yukawa coupling in the lepton sector. We discuss lep…

hep-lat1997★ 5 cited

First study of $B \to π$ semileptonic decay form factors using NRQCD

H. Matsufuru, S. Hashimoto, K-I. Ishikawa +2

We present a quenched calculation of the form factors of the semileptonic weak decay $B \to π l ν ˉ$ with $O (1/ m_{Q})$ NRQCD heavy quark and Wilson light quark on a $1 6^{3} \times 32$ …

hep-lat1997★ 5 cited

Heavy quark mass dependence of semileptonic form factors for B decays

JLQCD Collaboration, S. Aoki, M. Fukugita +13

We present our study of the dependence of the heavy-to-light semileptonic B decay form factors on the heavy-light meson mass $M_{P S}$ . Simulations are made over a range of the heav…

hep-ph1997★ 7 cited

susy23 v2.0: an Event Generator for Supersymmetric Processes at $e^{+} e^{-}$ Colliders

J. Fujimoto, K. Hikasa, T. Ishikawa +11

\susy23 is a Monte-Carlo package for generating supersymmetric (SUSY) processes at $e^{+} e^{-}$ colliders. Twenty-three types of SUSY processes with 2 or 3 final state particles at tre…

hep-lat1997★ 1 cited

The Light Quark Masses with the Wilson Quark Action using Chiral Ward Identities

JLQCD Collaboration, S. Aoki, M. Fukugita +8

We present results for the light quark masses for the Wilson quark action obtained with the PCAC relation for the one-link extended axial vector current in quenched QCD at $β=5.9-6…

hep-lat1997★ 4 cited

Nucleon Spin Structures from Lattice QCD: Flavor Singlet Axial and Tensor Charges

Yoshinobu Kuramashi

The flavor singlet axial and tensor charges of the nucleon are calculated in lattice QCD. We find $ΔΣ = Δ u + Δ d + Δ s = + 0.638 (54) - 0.347 (46) - 0.109 (30) = + 0.18 (10)$ for the axial charge and…

hep-lat1997★ 5 cited

The Kaon B-parameter with the Wilson Quark Action using Chiral Ward Identities

JLQCD Collaboration, S. Aoki, M. Fukugita +8

We present a detailed description of the method and results of our calculation of the kaon B parameter using the Wilson quark action in quenched QCD at $β = 5.9 - 6.5$ . The mixing prob…

hep-lat1997

$K^{+} \to π^{+} π^{0}$ Decay Amplitude in Quenched Lattice QCD

JLQCD Collaboration, S. Aoki, M. Fukugita +8

A new study is reported of a lattice QCD calculation of the $K^{+} \to π^{+} π^{0}$ decay amplitude with the Wilson quark action in the quenched approximation at $β = 6.1$ . The amplitude is…

hep-lat1997★ 7 cited

Perturbative renormalization parameters for heavy quarks

K-I. Ishikawa, S. Aoki, S. Hashimoto +3

We study the heavy quark mass dependence of the perturbative renormalization factors for the heavy-light currents involving Wilson, Clover, and NRQCD heavy quarks. We find that the…

hep-lat1997

Two-Dimensional Dynamical Triangulation using the Grand-canonical Ensemble

S. Oda, N. Tsuda, T. Yukawa

The string susceptibility exponents of dynamically triangulated two dimensional surfaces with sphere and torus topology were calculated using the grand-canonical Monte Carlo method…

Quark Mass Matrices in Superstring Models

Observation of Hadronic W Decays in t-tbar Events with the Collider Detector at Fermilab

Quenched staggered light hadron spectroscopy from 483×64 at β=6.5

BPS Saturation from Null Reduction

Closing the light gluino window

Measurement of the B0 B0-bar oscillation frequency using pi-B meson charge-flavor correlations in p p-bar collisions at sqrt{s} = 1.8 TeV

Relation between Scattering and Production Amplitude - Case of Intermediate σ-Particle in ππ-System

σ-Particle in Production Processes

Re-analysis of ππ/ KπPhase Shift and Existence of σ$(600) / κ(900)-Particle

Constraints on Non-Standard Contributions to the Charged-Current Interactions

Direct CP violation in three-body decays of the B meson by resonance effects

Spontaneous Decoherence in Coupled Quantum Kicked Rotators

Domain wall solution for vector like model

B meson decay constant with the Wilson and Clover heavy quark actions

Atmospheric Neutrino Oscillation and Large Lepton-Flavour Violation in the SUSY SU(5) GUT

First study of B→π semileptonic decay form factors using NRQCD

Heavy quark mass dependence of semileptonic form factors for B decays

susy23 v2.0: an Event Generator for Supersymmetric Processes at e+e− Colliders

The Light Quark Masses with the Wilson Quark Action using Chiral Ward Identities

Nucleon Spin Structures from Lattice QCD: Flavor Singlet Axial and Tensor Charges

The Kaon B-parameter with the Wilson Quark Action using Chiral Ward Identities

K+→π+π0 Decay Amplitude in Quenched Lattice QCD

Perturbative renormalization parameters for heavy quarks

Two-Dimensional Dynamical Triangulation using the Grand-canonical Ensemble

Quenched staggered light hadron spectroscopy from $4 8^{3} \times 64$ at $β = 6.5$

Direct CP violation in three-body decays of the $B$ meson by resonance effects

First study of $B \to π$ semileptonic decay form factors using NRQCD

susy23 v2.0: an Event Generator for Supersymmetric Processes at $e^{+} e^{-}$ Colliders

$K^{+} \to π^{+} π^{0}$ Decay Amplitude in Quenched Lattice QCD