Updated on 2022/05/17

写真a

 
KOMAMIYA, Sachio
 
Affiliation
Faculty of Science and Engineering, Waseda Research Institute for Science and Engineering
Job title
Senior Researcher(Professor)

Concurrent Post

  • Faculty of Science and Engineering   School of Fundamental Science and Engineering

Education

  •  
    -
    1979

    The University of Tokyo  

  •  
    -
    1979

    The University of Tokyo   Graduate School, Division of Science  

  •  
    -
    1976

    The University of Tokyo   Faculty of Science   Department of Physics  

  •  
    -
    1976

    The University of Tokyo   Faculty of Science  

Degree

  • Master of Scinece

  • Doctor of Science

Research Experience

  • 2000
    -
     

    - 東京大学素粒子物理国際研究センターセンター長(併任)

  • 2000
    -
     

    - serve concurrently as Director, ICEPP, The University of Tokyo

  • 1999
    -
     

    - 東京大学大学院理学系研究科物理学専攻教授

  • 1999
    -
     

    - Professor, Physics Department, Graduate School of Science, The University of Tokyo

  • 1995
    -
    1999

    The University of Tokyo   International Center for Elementary Particle Physics

  • 1995
    -
    1999

    Professor, ICEPP, The University of Tokyo

  • 1990
    -
    1995

    The University of Tokyo   International Center for Elementary Particle Physics

  • 1990
    -
    1995

    Associate Professor, ICEPP, The University of Tokyo

  • 1986
    -
    1990

    米国・スタンフォード大学SLAC研究職員

  • 1986
    -
    1990

    Staff Scientist, SLAC, Stanford University

  • 1982
    -
    1986

    ドイツ・ハイデルベルク大学物理学研究所研究員

  • 1982
    -
    1986

    Research Associate, Physikalisches Institut, Universitat Heidelberg

  • 1979
    -
    1982

    The University of Tokyo   Faculty of Science

  • 1979
    -
    1982

    Research Associate, LICEPP, Faculty of Sceince, The University of Tokyo

  •  
     
     

    The University of Tokyo Graduate School of Science, Department of Physics   Physicist

▼display all

Professional Memberships

  •  
     
     

    高エネルギー物理学研究者会議

  •  
     
     

    日本物理学会

 

Research Areas

  • Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

Research Interests

  • 素粒子実験

  • Experimental Elementary Particle Physics

Books and Other Publications

  • e+e-コライダーに於ける新粒子の探索「高エルルギー電子-陽電子物理学」(第13章)(共著)

    1988

  • Search for New Particles at e+e- Collider"High Energy Electron Positron Physics(Chap ter-13)"

    World Scientific  1988

Misc

  • LEPにおいて┣D8s┫D8=183GeVでのスカラートップクォークスカラーボトムクォークの探索

      C6   225  1999

  • Search for Scalar Top and Scalar Bottom Quarks at ┣D8s┫D8=183GeV at LEP

    European Physics Journal   6 ( 2 ) 225 - 238  1999

    DOI

  • LEPにおける┣D8s┫D8=170 GeV-172GeVでのチャージーノ及びニュートラリーノの探索

      C2   213  1998

  • Search for Chargino and Neutralino Production at ┣D8s┫D8=170 GeV-172GeV

    European Physics Journal   2 ( 2 ) 213 - 236  1998

    DOI

  • Search for Chargino and Neutralino Production at sqrt(s) = 170 and 172GeV at LEP(共著)

    European Physical Journal   2 ( 2 ) 213 - 236  1998

    DOI

  • Search for scalar top and scalar bottom quarks using the OPAL detector at LEP

    K Ackerstaff, G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, Bobinski, I, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, RM Brown, HJ Burckharth, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, DG Charlton, D Chrisman, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, S DeJonge, LA delPozo, K Desch, MS Dixit, ED Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, A Furtjes, P Gagnon, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, W Gibson, DM Gingrich, D Glenzinski, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, J Grunhaus, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, RJ Hemingway, M Herndon, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, K Ishii, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, CR Jones, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, TR Junk, D Karlen, K Kawagoe, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, BJ King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, M Kolrep, S Komamiya, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, R Lahmann, WP Lai, D Lanske, J Lauber, Lautenschlager, SR, JG Layter, D Lazic, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, MJ Losty, J Ludwig, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, RA McPherson, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, K Nagai, Nakamura, I, HA Neal, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, NJ Oldershaw, T Omori, MJ Oreglia, S Orito, J Palinkas, G Pasztor, Pater, JR, GN Patrick, J Patt, MJ Pearce, S Petzold, P Pfeifenschneider, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, S Robertson, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, U Ruppel, DR Rust, R Rylko, K Sachs, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, S Schmitt, M Schroder, HC SchultzCoulon, M Schulz, M Schumacher, P Schutz, WG Scott, TG Shears, BC Shen, CH ShephardThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Steiert, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, SD Talbot, S Tanaka, P Taras, S Tarem, M Thiergen, MA Thomson, E vonTorne, S Towers, Trigger, I, T Tsukamoto, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, G Wolf, S Wotton, TR Wyatt, S Yamashita, G Yekutieli, Zacek, V

    PHYSICS LETTERS B   389 ( 1 ) 197 - 210  1996.12

     View Summary

    The scalar top quark can be the Lightest charged supersymmetric particle and it can be lighter than the top quark itself in supersymmetric extensions of the Standard Model. A search for a scalar top quark has been performed using a total data sample of 15.2 pb(-1) at centre-of-mass energies of root s=130, 136, and 161 GeV collected with the OPAL detector at LEP. No evidence was found above the background level expected from the Standard Model, The 95% C.L. lower limit on the scalar top quark mass is 58.7 GeV, if the mixing angle between the supersymmetric partners of the left- and right-handed states of the top quark is smaller than pi/4. If the mixing angle is zero, the limit is 65.4 GeV, These limits were obtained on the condition that the scalar top quark decays into a charm quark and the lightest neutralino, and that the mass difference between the scalar top quark and the lightest neutralino is larger than 10 GeV. Assuming a relatively light scalar neutrino, we also studied the complementary decay mode of the scalar top quark in which it decays into a bottom quark, a charged lepton, and a scalar neutrino, A mass limit on the light scalar bottom quark was also set in this study.

    DOI

  • Search for chargino and neutralino production in e+e- collisions at ECM=161 GeV

    Physics Letters   B ( 389 ) 161  1996

    DOI

  • Search for chargino and neutralino production using the OPAL detector at ECM=130-136 GeV at LEP

    Physics Letters   B ( 389 ) 161  1996

  • 2レプトン事像を用いたBメソン振動の研究

      C66   555  1995

  • A Study of B Meson Oscillations Using Dilepton Events

    Zeitshrift Fiir Physilc   66 ( 4 ) 555 - 565  1995

    DOI

  • Z0崩壊におけるbハドロンの平均寿命の測定(共著)

      60,217-228  1993

  • B0sの寿命の測定(共著)

      312,501-510  1993

  • Z0のハドロン崩壊におけるB0-┣DAB0(/)-┫DA混合、Γ(Z0→bb┣D4-┫D4)/Γ(Z0→hadrons)、およびbフレイバーを持つハドロンのレプトンを含む崩壊分岐比の測定(共著)

      60,199-216  1993

  • 5つのフレイバーに関する強い相互作用のフレイバー独立性のテスト(共著)

      60,397-420  1993

  • Z0のハドロン崩壊におけるK0sK0sボーズ・アインシュタイン相関の研究(共著)

      298,456-468  1993

  • Z0のハドロン崩壊中のK(892)生成の測定(共著)

      305,407-414  1993

  • Z0のハドロン崩壊中のクォークおよびグルーオンジェットの電荷分布の研究(共著)

      302,523-532  1993

  • Z0のハドロン崩壊中の終状態光子放出による強い相互作用と電弱相互作用の研究(共著)

      58,405-418  1993

  • 2粒子角相関によるQCDコヒーレンスの研究(共著)

      58,207-217  1993

  • クォークジェットのバーテックス検出を用いたクォークとグルーオンジェットの違いの研究(共著)

      58,387-403  1993

  • LEPでのハドロンおよびレプトン生成による中性カレントの精密測定(共著)

      58,219-237  1993

  • タウ粒子の寿命の測定(共著)

      59,183-194  1993

  • ジェット中でのストレンジバリオン対の鎖状生成の証拠(共著)

      305,415-427  1993

  • B0とB+の寿命の測定(共著)

      307,247-261  1993

  • 再加算QCD計算を用いたLEPでのαs(MZ0)の決定(共著)

      59,1-19  1993

  • レプトンを用いたΓ(Z0→bb┣D4-┫D4/Γ(Z0→hadrons)の測定(共著)

      58,523-539  1993

  • Zボゾンの質量の測定とLEPのエネルギー較正(共著)

      307,187-193  1993

  • LEPにおけるe+e-衝突中の大質量光子対の異常生成の探索(共著)

      311,391-407  1993

  • Z0のハドロン崩壊中のレプトンを用いたe+e-→bb┣D4-┫D4とe+e-→cc┣D4-┫D4の前後方非対称性(共著)

      60,19-35  1993

  • インパクト・パラメータ法を用いたΓ(Z0→bb┣D4-┫D4)/Γ(Z0→hadrons)の測定(共著)

      60,579-592  1993

  • Rパリティを破るような、大質量、不安定フォティーノの探索(共著)

      313,333-340  1993

  • bフレイバーを持つバリオンの平均寿命の測定(共著)

      316,435-447  1993

  • D中間子を用いたZ0共鳴近傍におけるe+e-→cc┣D4-┫D4およびe+e-→bb┣D4-┫D4の前後方非対称性の測定(共著)

      60,601-612  1993

  • LEPにおける光子-光子衝突によるミュー粒子対生成の研究とタウ粒子対生成の証拠(共著)

      60,593-600  1993

  • LEPに於けるe+e-対消滅による重い質量をもつ光子対の異常発生の探索(共著)

      B311,391  1993

  • Measurement of the Average b Hadron Lifetime in Z0 Decays

    Zeitschrift f(]J1168[)r Physik C   60,217-228  1993

    DOI

  • Measurement of the B0s Lifetime

    Physics Letters B   312,501-510  1993

    DOI

  • Measurements of B0-┣DAB0(/)-┫DA Mixing, Γ(Z0→bb┣D4-┫D4)/Γ(Z0→ hadrons)and Semileptonic Branching Ratios for b-flavoured Hodrons in Hadronic Z0 Decays

    Zeitschrift f(]J1168[)r Physik C   60,199-216  1993

  • A Test of the Flavour Independence of the Strong Interaction for Five Flavours

    Zeitschrft f(]J1168[)r Physik C   60,397-420  1993

    DOI

  • A Study of K0sK0s Bose-Einstein Correlations in Hadronic Z0 Decays

    Physics Letters B   298,456-468  1993

  • A Measurement of K(892) Production in Hadronic Z0 Decays

    Physics Letters B   305,407-414  1993

    DOI

  • A Study of the Electric Charge Distributions of Quark and Gluon Jets in Hadromic Z0 Decays

    Physics Letters B   302,523-532  1993

    DOI

  • Studies of Strong and Electroweak Interactions Using Final State Photon Emission in Hadronic Z0 Decays

    Zeitschrift f(]J1168[)r Physik C   58,405-418  1993

    DOI

  • QCD Coherence Studies Using Two Paricle Azimuthal Correlations

    Zeitschrift f(]J1168[)r Physik C   58,207-217  1993

    DOI

  • A Study of Differences Between Quark and Gluon Jets Using Vertex Tagging of Quark Jets

    Zeitschrift f(]J1168[)r Physik C   58,387-403  1993

    DOI

  • Precision Measurements of the Neutral Current from Hadron and Lepton Production at LEP

    Zeitschrift f(]J1168[)r Physik C   58,219-237  1993

    DOI

  • Measurement of the τ Lifetime

    Zeitschrift f(]J1168[)r Physik C   59,183-194  1993

  • Evidence for Chain-Like Production of Strange Baryon Pairs in Jets

    Physics Letters B   305,415-427  1993

    DOI

  • Measurement of the B0 and B+ Lifetimes

    Physics Letters B   307,247-261  1993

    DOI

  • A Determination of αs(MZ0)at LEP Using Resummed QCD Calculations

    Zeitschrift f(]J1168[)r Physik C   59,1-19  1993

  • Measurement of Γ(Z0→bb┣D4-┫D4)/Γ(Z0→hadrons)Using Leptons

    Zeitschrift f(]J1168[)r Physik C   58,523-539  1993

  • Measurement of the Mass of the Z Boson and the Energy Calibration of LEP

    Physics Letters B   307,187-193  1993

    DOI

  • Search for Anomalous Production of High Mass Photon Pairs in e+e- Collisions at LEP

    Physics Letters B   311,391-407  1993

    DOI

  • The Forward-Backward Asymmetry of e+e-→bb┣D4-┫D4 and e+e-→cc┣D4-┫D4 Using Leptons in Hadronic Z0 Decays

    Zeitschrift f(]J1168[)r Physik C   60,19-35  1993

  • A Measurement of Γ(Z0→bb┣D4-┫D4)/Γ(Z0→ hadrons)Using an Impact Parameter Technique

    Zeitschrift f(]J1168[)r Physik C   60,579-592  1993

  • Search for Massive, Unstable Photinos that Violates R Parity

    Physics Letters B   313,333-340  1993

    DOI

  • A Measurement of the Average Lifetime of b-flavored Baryons

    Physics Letters B   316,435-447  1993

    DOI

  • A Measurement of the Forward-Backward Asymmetry of e+e-→cc┣D4-┫D4 and e+e-→bb┣D4-┫D4 at Centre of Mass Energies on and near the Z0 Peak Using D Mesons

    Zeitschrift f(]J1168[)r Physik C   60,601-612  1993

  • A Study of Muon Pair Production and Evidence for Tau Pair Production in Photon-Photon Collisions at LEP

    Zeitschrift f(]J1168[)r Physik C   60,593-600  1993

    DOI

  • Search for Anomalous Production of High Mass photon pairs in e+e- Annihilation at LEP

    Physics Letters   B311,391  1993

    DOI

  • αs(Mz°)のLEPに於けるグローバルな決定(共著)

      C55,1  1992

  • A Global Determination of αs(Mz°)at LEP

    Zeitschrift f(]J1168[)r Physik   C55,1  1992

  • Zボソン崩壊からのノンミニマルヒッグスボソンの探索

      64   2881  1990

  • SLC及びPEPにおける 微分ジェット数分布を用いたαsの決定

      64   987  1990

  • 29GeVと91GeVでのe+e-対消滅に於て、微分ジュットマルティプリシティーを用たαsの決定(共著)

      64,987  1990

  • ノンミニマル中性ヒッグスボソンのZボソン粒子崩壊に於ける探索(共著)

      64,2881  1990

  • Search for Nonminimal Higgs Bosons from Z Boson Decay

    Physical Review Letters   64 ( 24 ) 2881 - 2884  1990

    DOI PubMed CiNii

  • Determination of αs from Differential Jet Multiplicity Distribution at SLC and PEP

    Physical Review Letters   64   987  1990

  • Determination of alpha-s from a differential Jet multiplicity Distribution at SLC and PEP(共著)

    Physical Review Letters   64   987  1990

  • Determination of αs from Differential Jet Multiplicity Distributions in e+e- Annihilation at 29GeV and 91GeV

    Physical Review Letters   64,987  1990

  • Search for Non-minimal Neutral Higgs Bosons from Z Boson Decay

    Physical Review Letters   64,2881  1990

  • Zポソンのハドロン崩壊の初観側

      63   1558  1989

  • e+e-対消滅に於て、Zボソンパラメータの初の決定(共著)

      63,724  1989

  • First Measurement of Hadronic Decays of the Z Boson

    Physical Review Letters   63 ( 15 ) 1558 - 1561  1989

    DOI PubMed CiNii

  • Initial Measurement of Z Boson Parameters in e+e- Annihilation

    Physical Review Letters   63,724  1989

  • PETRAにおけるe+e-対消滅により仮想Z゜ボソンから生成されたモノジェット事象の探索

      155B   288  1985

  • PETRAに於けるe+e-対消滅に於ける超対称性チャージーノの探索(共著)

      C29,505  1985

  • Search for monojet Events Produced by Virtual Z゜Boson in e+e- Annihilation

    Physical Review Letters   155B   288  1985

  • Search for monojet events in e+e- annihilation

    Physics Letters   155 ( B ) 288  1985

    DOI

  • A Search for Supersymmetric chargino in e+e- Annihilation at PETRA

    Zeitschrift f(]J1168[)r Physik   C29,505  1985

▼display all

Awards

  • 国際協同実験JADEの一員として European Physical Society Prize

    1995  

Research Projects

  • 超冷中性子を用いた重力場中での量子効果の検証

  • BESIII実験

  • LEP実験

  • 将来計画のための測定器の開発研究

  • 国際リニアコライダー(ILC)

  • Research and development of particle detectors for future projects

  • Experimental Studies on Gauge Interactions

  • Search for New Particles and New Phenomena

▼display all

 

Committee Memberships

  • 2000
    -
    2004

    高エネルギー物理学研究者会議  高エネルギー委員長