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 1995Show all

58 papers · 1 filter

hep-ex1995★ 2 cited

Observation of Highly Virtual Photon-Photon Collisions to Hadrons at TRISTAN

Ryoji Enomoto

We have observed highly virtual ( $Q^{2} > 1.05 G e V^{2}$ ) photon-photon collisions to hadronic final states at $s_{e^{+} e^{-}} = 58 G e V$ . The integrated luminosity of the data sample was…

hep-lat1995★ 2 cited

On the Definition of the Partition Function in Quantum Regge Calculus

Jun Nishimura

We argue that the definition of the partition function used recently to demonstrate the failure of Regge calculus is wrong. In fact, in the one-dimensional case, we show that there…

hep-ph1995★ 6 cited

Probing the heavy Higgs mass by the measurement of the Higgs decay branching ratios in the minimal supersymmetric standard model

J. Kamoshita, Y. Okada, M. Tanaka

We examine whether the parameters in the Higgs sector of the minimal supersymmetric standard model can be determined by detailed study of production cross section and decay branchi…

hep-lat1995★ 10 cited

Phases and fractal structures of three-dimensional simplicial gravity

Hiroyuki Hagura, Noritsugu Tsuda, Tetsuyuki Yukawa

We study phases and fractal structures of three-dimensional simplicial quantum gravity by the Monte-Carlo method. After measuring the surface area distribution (SAD) which is the t…

hep-lat1995★ 2 cited

The Complex Structure of 2D Surfaces

H. Kawai, N. Tsuda, T. Yukawa

The complex structure of a surface generated by the two-dimensional dynamical triangulation(DT) is determined by measuring the resistivity of the surface. It is found that surfaces…

hep-ph1995★ 29 cited

QCD corrections to the decay $H^{+} \to t b ˉ$ in the Minimal Supersymmetric Standard Model

A. Bartl, H. Eberl, K. Hidaka +3

We present a complete calculation of the QCD corrections (of the order $α_{s}$ ) to the width of the decay $H^{+} \to t b ˉ$ within the Minimal Supersymmetric Standard Model. We fin…

hep-ph1995★ 5 cited

Electroweak Precision Measurements and the Minimal Supersymmetric Standard Model

Youichi Yamada, Kaoru Hagiwara, Seiji Matsumoto

We discuss supersymmetric contributions to the electroweak precision measurements in the Minimal Supersymmetric Standard Model for two cases: the quark-lepton universality violatio…

hep-th1995★ 74 cited

Renormalizability of Quantum Gravity near Two Dimensions

H. Kawai, Y. Kitazawa, M. Ninomiya

We study the renormalizability of quantum gravity near two dimensions. Our formalism starts with the tree action which is invariant under the volume preserving diffeomorphism. We i…

hep-lat1995★ 31 cited

Lattice Heavy Quark Effective Theory and the Isgur-Wise function

S. Hashimoto, H. Matsufuru

We compute the Isgur-Wise function using heavy quark effective theory formulated on the lattice. The non-relativistic kinetic energy term of the heavy quark is included to the acti…

hep-ph1995★ 16 cited

Formulations of spin 1 resonances in the chiral lagrangian

Masaharu Tanabashi

Equivalence of the hidden local symmetry formulation with non-minimal interactions and the anti-symmetric tensor field method of $ρ$ and $a_{1}$ mesons in the chiral lagrangian is sh…

hep-ph1995★ 1 cited

Precision Study of MSSM at future $e^{+} e^{-}$ linear colliders

Keisuke Fujii, Mihoko M. Nojiri, Toshifumi Tsukamoto

The lighter scalar tau lepton $\sti$ may be the lightest scalar lepton and therefore would be found earlier in future collider experiments. We point out the impact of the measureme…

hep-lat1995★ 3 cited

New Developments in Lattice QCD: Calculation of Flavor Singlet Nucleon Matrix Elements and Hadron Scattering Lengths

Masanori Okawa

Recent developments in lattice QCD calculation of flavor singlet nucleon matrix elements are reviewed. Substantial sea quark contributions are found in the $π$ - $N σ$ term and the…

hep-ph1995★ 2 cited

On the Solution to the Polonyi Problem with No-Scale Type Supergravity

T. Moroi

We study the solution to the Polonyi problem in the framework of no-scale type supergravity. In such a model, Polonyi field can weigh as $O (10 TeV)$ and decay just before the…

hep-lat1995★ 8 cited

Lattice QCD Calculation of Flavor Singlet Matrix Elements and N-N Scattering Lengths

Yoshinobu Kuramashi

We report on our recent study of flavor singlet matrix elements calculated with the wall source method without gauge fixing. Results are presented for the mass difference between $…

hep-ph1995★ 679 cited

Lepton-Flavor Violation via Right-Handed Neutrino Yukawa Couplings in Supersymmetric Standard Model

J. Hisano, T. Moroi, K. Tobe +1

Various lepton-flavor violating (LFV) processes in the supersymmetric standard model with right-handed neutrino supermultiplets are investigated in detail. It is shown that large L…

hep-ph1995★ 32 cited

$B^{0}$ -- $B^{0}$ mixing and $ε_{K}$ parameter in the minimal supergravity model

Toru Goto, Takeshi Nihei, Yasuhiro Okada

\bb mixing and a CP violation parameter in \kk mixing $ε_{K}$ are studied in the minimal supergravity model. We solve the one-loop renormalization group equations for the minimal sup…

hep-lat1995★ 11 cited

Analysis of Hadron Propagators with One Thousand Configurations on a $2 4^{3} \times 64$ Lattice at $β = 6.0$

JLQCD Collaboration

Statistical properties of effective mass are analyzed. We show from a general ground that effective mass as a function of time should not exhibit long plateaux whatever high statis…

hep-lat1995★ 2 cited

Toward Precision Measurement of $B_{K}$ with Quenched Kogut-Susskind Quarks

JLQCD Collaboration

We present a status report of our ongoing effort toward a precision determination of the kaon $B$ parameter with the Kogut-Susskind quark action in quenched QCD. Results for $B_{K}$ …

hep-ex1995★ 61 cited

Measurement of $σ \cdot B (W \to e ν)$ and $σ \cdot B (Z^{0} \to e^{+} e^{-})$ in $p p ˉ$ collisions at $s = 1.8$ TeV

F. Abe

We present a measurement of $σ \cdot B (W \to e ν)$ and $σ \cdot B (Z^{0} \to e^{+} e^{-})$ in proton - antiproton collisions at $s = 1.8$ TeV using a significantly improved understandi…

hep-th1995

Ward Identities of W_{\infty} Symmetry and Higher Genus Amplitudes in 2D String Theory

Ken-ji Hamada

The Ward identities of the $W_{\infty}$ symmetry in two dimensional string theory in the tachyon background are studied in the continuum approach. We consider amplitudes different…

hep-ex1995★ 44 cited

Measurement of correlated $μ - o v er l in e b$ jet cross sections in $p p ˉ$ collisions at $s = 1.8$ TeV

F. Abe

We report on measurements of differential $μ - b ˉ$ cross sections, where the muon is from a semi-leptonic $b$ decay and the $b ˉ$ is identified using precision track reco…

hep-ph1995★ 7 cited

QCD corrections to the decay $H^+ \to \st \bar{\sb}$ in the Minimal Supersymmetric Standard Model

A. Bartl, H. Eberl, K. Hidaka +3

We calculate the supersymmetric $O (α_{s})$ QCD corrections to the width of the decay $H^+ \rightarrow \st\bar{\sb}$ within the Minimal Supersymmetric Standard Model. We find t…

hep-th1995★ 4 cited

MINBU Distribution of Two Dimensional Quantum Gravity: Simulation Result and Semiclassical Analysis

S. Ichinose, N. Tsuda, T. Yukawa

We analyse MINBU distribution of 2 dimensional quantum gravity. New data of R $^{2}$ -gravity by the Monte Carlo simulation and its theoretical analysis by the semiclassical approach a…

hep-ex1995★ 10 cited

The Cherenkov Correlated Timing Detector: Beam Test Results from Quartz and Acrylic Bars

H. Kichimi, Y. Sugaya, H. Yamaguchi +23

Several prototypes of a Cherenkov Correlated Timing (CCT) Detector have been tested at the KEK-PS test beam line. We describe the results for Cherenkov light yields and timing char…

Observation of Highly Virtual Photon-Photon Collisions to Hadrons at TRISTAN

On the Definition of the Partition Function in Quantum Regge Calculus

Probing the heavy Higgs mass by the measurement of the Higgs decay branching ratios in the minimal supersymmetric standard model

Phases and fractal structures of three-dimensional simplicial gravity

The Complex Structure of 2D Surfaces

QCD corrections to the decay H+→tbˉ in the Minimal Supersymmetric Standard Model

Electroweak Precision Measurements and the Minimal Supersymmetric Standard Model

Renormalizability of Quantum Gravity near Two Dimensions

Lattice Heavy Quark Effective Theory and the Isgur-Wise function

Formulations of spin 1 resonances in the chiral lagrangian

Precision Study of MSSM at future e+e− linear colliders

New Developments in Lattice QCD: Calculation of Flavor Singlet Nucleon Matrix Elements and Hadron Scattering Lengths

On the Solution to the Polonyi Problem with No-Scale Type Supergravity

Lattice QCD Calculation of Flavor Singlet Matrix Elements and N-N Scattering Lengths

Lepton-Flavor Violation via Right-Handed Neutrino Yukawa Couplings in Supersymmetric Standard Model

B0--B0 mixing and εK​ parameter in the minimal supergravity model

Analysis of Hadron Propagators with One Thousand Configurations on a 243×64 Lattice at β=6.0

Toward Precision Measurement of BK​ with Quenched Kogut-Susskind Quarks

Measurement of σ⋅B(W→eν) and σ⋅B(Z0→e+e−) in ppˉ​ collisions at s​=1.8 TeV

Ward Identities of W_{\infty} Symmetry and Higher Genus Amplitudes in 2D String Theory

Measurement of correlated μ−overlineb jet cross sections in ppˉ​ collisions at s​=1.8 TeV

QCD corrections to the decay $H^+ \to \st \bar{\sb}$ in the Minimal Supersymmetric Standard Model

MINBU Distribution of Two Dimensional Quantum Gravity: Simulation Result and Semiclassical Analysis

The Cherenkov Correlated Timing Detector: Beam Test Results from Quartz and Acrylic Bars

QCD corrections to the decay $H^{+} \to t b ˉ$ in the Minimal Supersymmetric Standard Model

Precision Study of MSSM at future $e^{+} e^{-}$ linear colliders

$B^{0}$ -- $B^{0}$ mixing and $ε_{K}$ parameter in the minimal supergravity model

Analysis of Hadron Propagators with One Thousand Configurations on a $2 4^{3} \times 64$ Lattice at $β = 6.0$

Toward Precision Measurement of $B_{K}$ with Quenched Kogut-Susskind Quarks

Measurement of $σ \cdot B (W \to e ν)$ and $σ \cdot B (Z^{0} \to e^{+} e^{-})$ in $p p ˉ$ collisions at $s = 1.8$ TeV

Measurement of correlated $μ - o v er l in e b$ jet cross sections in $p p ˉ$ collisions at $s = 1.8$ TeV