Research Results on Physics and Detector at Linear Collider
Main Contributions to OPAL Physics Results
- Made precise measurements of hadronic cross sections to determine the number of generations to be exactly three.
- Combined analyses of Z^0 lineshape and electroweak measurements to test the standard model down to quantum corrections; Correctly predicted the top quark mass; Now predicts the Higgs boson mass to be below 200GeV; Also hints at supersymmetric grand unification at an extremely high energy.
- Made unbiased searches for new particles such as Higgs bosons and heavy leptons in the initial phase of the experiment.
- Measured forward-backward asymmetry of hadronic events by using quark charge technique; Made a pioneering study of B meson oscillation by applying the same technique.
- Lead the initial studies to measure the W boson mass; Studied four-fermion final states to constrain the triple gauge boson couplings.
- Only those I made major contributions to are listed here. See this page for all the OPAL publications.
- "Measurement of the Z^0 Mass and Width with the
OPAL Detector at LEP"
M.Z.Akrawy, et al.
(OPAL Collaboration)
Physics Letters B231, 530 (1989).
- "Mass Limits for a Standard Model Higgs Boson in
e^+e^- Collisions at LEP"
M.Z.Akrawy, et al.
(OPAL Collaboration)
Physics Letters B236, 224 (1990).
- "A Combined Analysis of the Hadronic and Leptonic Decays of
the Z^0"
M.Z.Akrawy, et al.
(OPAL Collaboration)
Physics Letters B240, 497 (1990).
- "Analysis of Z^0 Couplings to Charged Leptons"
M.Z.Akrawy, et al.
(OPAL Collaboration)
Physics Letters B247, 458 (1990).
- "Measurement of the Z^0 Line Shape Parameters
and the Electroweak Couplings of Charged Leptons"
G.Alexander, et al.
(OPAL Collaboration)
Zeitschrift fuer Physik C52, 175 (1991).
- "Electroweak Parameters of the Z^0 Resonance and
the Standard Model'"
The LEP Collaborations : ALEPH, DELPHI, L3 and OPAL
Physics Letters B276, 247 (1992).
- "A Measurement of the Forward-Backward Charge Asymmetry in
Hadronic Decays of the Z^0"
P.Acton, et al.
(OPAL Collaboration)
Physics Letters B294, 436 (1992).
- "Precision Measurements of the Neutral Current from
Hadron and Lepton Production at LEP"
P.Acton, et al.
(OPAL Collaboration)
Zeitschrift fuer Physik C58, 219 (1993).
- "Measurement of the Mass of the Z Boson and
the Energy Calibration of LEP"
LEP Energy Group, ALEPH, DELPHI, L3, OPAL
Physics Letters B307, 187 (1993).
- "Search for Anomalous Production of High Mass
Photon Pairs in e^+e^- Collisions at LEP"
P.Acton, et al.
(OPAL Collaboration)
Physics Letters B311, 391 (1993).
- "Improved Measurements of the Neutral Current
from Hadron and Lepton Production at LEP"
R.Akers, et al.
(OPAL Collaboration)
Zeitschrift fuer Physik C61, 19 (1994).
- "A Study of B Meson Oscillations Using Dilepton Events"
R.Akers, et al.
(OPAL Collaboration)
Zeitschrift fuer Physik C66, 555 (1995).
- "A Combination of Preliminary Electroweak Measurements and Constraints
on the Standard Model"
ALEPH, DELPHI, L3 and OPAL
CERN Preprint CERN-PPE/96-183 (1996).
- "A Study of Four-Fermion Final States with High Multiplicity at LEP"
G.Alexander et al.
(OPAL Collaboration)
Physics Letters B376, 315 (1996).
- "Measurement of the W Boson Mass and W^+W^- Production and Decay
Properties in e^+e^- Collisions at sqrt(s)=172 GeV"
K.Ackerstaff et al.
(OPAL Collaboration)
European Physical Journal C1, 395 (1998).
- "W^+W^- production and triple gauge boson couplings at LEP energies
up to 183 GeV"
G.Abbiendi et al.
(OPAL Collaboration)
European Physical Journal C8, 191 (1999).
- "Precise Determination of the Z Resonance Parameters at LEP : Zedometry"
G.Abbiendi et al.
(OPAL Collaboration)
European Physical Journal C19, 587 (2001).
- "Precision electroweak measurements on the Z resonance"
ALEPH, DELPHI, L3, OPAL, SLD, LEP EW WG, SLD EW and HFG
Physics Reports 427, 257-454 (2006).
- "電弱理論とその検証"
森 俊則
現代物理最前線4、共立出版、ISBN4-320-03389-2 (2001).
- Presentations at conferences and workshops:
- "The First Year of OPAL on Z^0"
T.Mori
The XXV International Conference
on High Energy Physics, Singapore (1990).
- "Searches for Standard Model Higgs Boson at LEP"
T.Mori
The XXVI International Conference
on High Energy Physics, Dallas, U.S.A. (1992).
- "QCD at LEP"
T.Mori
An Invited Talk at the 1992 Autumn Meeting of
Japan Physical Society (1992).
- "LEP Precision Measurements and Top Quark"
T.Mori
An Invited Talk at the 1994 Autumn Meeting of
Japan Physical Society (1994).
- "TRISTAN from LEP's Point of View"
T.Mori
The Third Workshop on TRISTAN Physics at High
Luminosities, KEK, Tsukuba (1994).
- "Recent Results from LEP"
T.Mori
The INS Workshop
``Physics of ee, e-gamma, gamma-gamma Collisions
at Linear Accelerators", Institute for Nuclear Study,
University of Tokyo, Tanashi (1994).
- "Five Years of LEP Experiments"
T.Mori
An Invited Talk at the YITP Workshop
``Particle Physics and its Future Perspective'',
Yukawa Institute for Theoretical Physics,
Kyoto University, Kyoto (1995).
- "Results from LEP2"
T.Mori
The International Symposium on Physics in e-p Collisions,
Institute for Nuclear Study, University of Tokyo, Tanashi (1996).
- "Dark Matter: Implications from LEP Experiments" (slide)
T.Mori
The Second RESCEU International Symposium on Dark Matter
in Universe and its Direct Detection, University of Tokyo, Tokyo (1996).
- "LEP1 through LEP2 beyond Standard Model"
T.Mori
APCTP: Pacific Particle Physics Phenomenology `97,
Seoul, South Korea (1997).
- "B Physics at LEP"
T.Mori
An Invited Talk at the B Physics Symposium, the Autumn Meeting
of Japan Physical Society, Niigata University (2000).
- "Standard Model Higgs Search at LEP-II"
T.Mori
KEK Theory Workshop on Physics at Linear Collider, KEK,
Tsukuba (2001).
- "LEP Higgs" (slide 55MB)
T.Mori
LEP Symposium 2001 ``Beyond the Electroweak Scale,"
ICEPP, University of Tokyo (2001).
- "電弱理論の基礎定数測定" (slide 15MB)
T.Mori
日本物理学会シンポジウム「物理定数の最新値と究極への挑戦」、東京理科大、2005年3月.
Main Contributions to AMY Physics Results
- Measured total hadronic cross section and determined the mass of Z^0 and the strong coupling constant.
- Searched for heavy quarks (top or 4th down quarks) using event shape variables.
- Construction, calibration, and operation of the Central Drift Chamber. Developed track reconstruction programs.
- "Measurement of R and a Search for Heavy Quark Production
in e^+e^- Annihilation
at sqrt s=50 and 52 GeV"
H.Sagawa, T.Mori, et al.
(AMY Collaboration)
Physical Review Letters 60, 93 (1988).
- "ACE -- AMY CDC Fast Track Finder"
T.Mori
Particle Physics with
High Resolution Tracking Detector,
Tokyo Metropolitan University (1988);
University of Rochester Preprint UR 1050B, April (1988).
- "The First Year of AMY at the TRISTAN
e^+e^- Collider"
T.Mori
Lake Louise Winter Institute
-- Quantum Chromodynamics;
Theory and Experiment, Chateau Lake Louise, Canada (1988).
- "Total Hadronic Cross Section in Electron-Positron Annihilation
at Center-of-Mass Energies from 50 to 57 GeV"
T.Mori
A Dissertation Submitted in Partial Fulfillment of the Requirements of Degree
Doctor of Philosophy, Department of Physics and Astronomy,
University of Rochester (1988).
- "Measurements of the e^+e^- Total Hadronic Cross-Section
and a Determination of M_Z and Lambda_MS\bar"
T.Mori, et al.
(AMY Collaboration)
Physics Letters B218, 499 (1989).
- "The design of the AMY central drift chamber and performance
in a 3 T magnetic field"
K.Ueno, T.Mori, H.W.Zheng, C.Back, D.Blanis, S.Eno, T.Haelen,
Y.H.Ho, Y.K.Kim, S.L.Olsen, N.M.Shaw, E.H.Thorndike,
J.Edwards, S.Lusin, C.Rosenfeld, Y.Higashi and Y.Kobayashi
Nuclear Instruments and Methods in Physics Research
A323, 601 (1992).
Nuclear Physics Studies at 12GeV PS, KEK
- "Readout System for a Cylindrical Drift Chamber MICHIE"
K.Ichimaru, Y.Takahata, F.Suekane,
T.Mori, T.Katsumi, H.Yokota, R.Chiba,
K.Tokushuku, I.Arai, H.En'yo, S.Sasaki, T.Nagae,
M.Sano, M.Sekimoto, J.C.Faivre,
J.Chiba, K.Nakai
Nuclear Instruments and Methods in Physics Research A237, 559 (1985).
- "Analyses of Particle Production in Hadron-Nucleus Reactions
at Several GeV
with a Two-Moving-Source Model"
H.En'yo, S.Sasaki, T.Nagae, K.Tokushuku,
M.Sano, M.Sekimoto, J.Chiba, K.Ichimaru, T.Mori, T.Katsumi,
H.Yokota, R.Chiba, K.Nakai
Physics Letters 159B, 1 (1985).
- "Pion Absorption on T=1 Nucleon Pairs at T_pi=70 MeV"
H.Yokota, K.Nakayama, K.Ichimaru,
T.Katsumi, T.Mori, S.Igarashi, K.Hama, R.Chiba, K.Nakai,
J.Chiba, H.En'yo, S.Sasaki, T.Nagae, M.Sekimoto
Physical Review Letters 57, 807 (1986).
- "Direct Observation on Multiple-Scattering Processes in Pion Absorption"
H.Yokota, T.Mori, T.Katsumi, S.Igarashi,
K.Hama, R.Chiba, K.Nakai, J.Chiba, H.En'yo,
S.Sasaki, T.Nagae, M.Sekimoto
Physical Review Letters 58, 191 (1987).
- "Direct (pi^+, pd) Cross-sections for Light Nuclei"
H.Yokota, S.Igarashi, K.Hama,
T.Mori, T.Katsumi, R.Chiba,
K.Nakai, J.Chiba, H.En'yo, S.Sasaki, T.Nagae, M.Sekimoto
Physical Review C39, 2090 (1989).
- "Inclusive (pi^+, p) and (pi^+, pp) Cross-sections
for Light Nuclei in the Resonance Energy Region"
H.Yokota, S.Igarashi, K.Hama,
T.Mori, T.Katsumi, R.Chiba,
K.Nakai, J.Chiba, H.En'yo, S.Sasaki, T.Nagae, M.Sekimoto
Physical Review C40, 270 (1989).
- "Broad Component of the (pi^+, pp)
Angular Correlation"
H.Yokota, S.Igarashi, K.Hama,
T.Mori, T.Katsumi, R.Chiba,
K.Nakai, J.Chiba, H.En'yo, S.Sasaki, T.Nagae, M.Sekimoto
Physical Review C40, 1069 (1989).
- "Analysis of Deuteron Spectra from Hadron-Nucleus Reactions
at Several GeV/c with the Coalescence Model"
K.Tokushuku, H.En'yo, T.Nagae, M.Sano, S.Sasaki,
M.Sekimoto, J.Chiba, K.Ichimaru, T.Mori, T.Katsumi,
H.Yokota, R.Chiba, K.Nakai
Physics Letters B235, 245 (1990).
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