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LCWS 2004

→ Europe/Zurich
Le Carrรฉ des Sciences, Paris- France

Le Carrรฉ des Sciences, Paris- France
Description
This "Colloque" is the 7th in the Worldwide LCWS series which started at Saariselka, Finland in 1991, continuing in Waikoloa, Hawaii; Morioka-Appi, Japan; Sitges, Spain; Fermilab, USA; and Jeju, Korea. These workshop-style conferences have been the main international forum for developing the physics case and reviewing detector designs and techniques for a linear collider programme in the energy range up to ~1 TeV. LCWS 2004 takes place while the International Technology Recommendation Panel is meeting to decide between the "warm" and "cold" accelerator technologies. Following their recommendation a Global Design Team will be started and preparations will begin for the bid to governments for full funding.

Program Committee: Jim Brau, David Miller, Hitoshi Yamamoto(Co-chairs) Paul Grannis,John Jaros, Dean Karlen, Mark Oreglia, Ritchie Patterson, Akiya Miyamoto, Yoshiaki Fujii, JooSang Kang, ChangGen Yang, Wei-Shu Hou, Tiziano Camporesi, Michael Danilov,Rolf Heuer, Marcello Piccolo, Francois Richard, Ron Settles, Henri Videau.

Local Organizing Committee: Jean-Claude Brient, Pierre Lutz, Francois Richard, Aurore Savoy Navarro, Dominique Schiff , Henri Videau (chair)

  • Monday 19 April
    • Plenary Session Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 1
        Welcome address
      • 2
        Charge to the Colloque
        Speaker: Jim Brau (Univ. of Oregon)
        transparencies
      • 3
        Theoretical introduction
        Speaker: John Ellis (CERN)
        transparencies
      • 10:55
        coffee break
      • 4
        Experimental Introduction
        Speaker: Raymond Frey (Univ. of Oregon)
        transparencies
      • 5
        Detector technologies
        Speaker: Hitoshi Yamamoto (Tohoku Univ.)
        transparencies
      • 12:35
        LUNCH
    • Plenary session Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 6
        Synergy between LHC and LC
        Speaker: Rohini Godbole
        transparencies
      • 7
        Present Status of R&D for the warm linacs (X and C band)
        Speaker: Kiyoshi Kubo (KEK) & Tom Markiewicz (SLAC)
        transparencies
      • 8
        Present Status of R&D for the Superconducting linac
        Speaker: Carlo Pagani (INFN Milano and DESY)
        transparencies
      • 9
        Present Status of R&D for CLIC
        Speaker: Jean-Pierre Delahaye (CERN)
        transparencies
      • 16:40
        collation
      • 10
        Introduction to the US Technology Options Report
        click here for a full report
        Speaker: Gerald Dugan (Cornell Univ.)
        transparencies
      • 11
        Some European thoughts on technology options
        Speaker: A. Wagner (DESY)
        transparencies
      • 12
        Report from the International Linear Collider Steering committee
        Speaker: Maury Tigner (Cornell Univ.)
        transparencies
      • 19:00
        Welcome cocktail at the Palais de la Decouverte
  • Tuesday 20 April
    • Accelerator Physics topics Auditorium Poincare

      Auditorium Poincare

      Conveners:R. Patterson, G.Blair, T. Nakanishi

      • 13
        The EUROTeV Initiative
        More than 20 European laboratories have joined forces on a Design Study for the Linear Collider in the TeV range. In a bid submitted to the European Union the consortium tries to gain support to address some of the remaining high ranking issues identified in the report of the TRC. It is expected that these studies will be complemented by similar activies in Asia and in the Americas. The talk will give an overview of the topics tackled in this study.
        Speaker: Elsen, E. (DESY)
        transparencies
      • 14
        Reliability Evaluation for the US LC Study
        One charge to the US LC Technology Options Study was to evaluate the projected availability of the warm and cold LC designs and indicate the effort required to meet specified goals. A Monte Carlo simulation was developed which estimated availability based on device counts, frequency of failure (MTTF) and time to repair (MTTR). The simulation included device accessibility, tunnel access and beam recovery times, and time for machine development studies. The study also considered the impact of 1 vs 2 tunnels, and the benefit of a conventional positron source for either design.
        Speaker: Gerald Dugan (Cornell Univ.)
        transparencies
      • 15
        Risk Evaluation for the US LC Study
        As part of the US LC Technology Options Study, a risk analysis was performed to identify aspects of the warm and cold designs where there was significant risk that the LC might fail to achieve its energy, luminosity or availability goals. The study identified 42 items and assigned each of these a rank for likelihood, severity, time of discovery and impact. This pointed to which sub-systems of each design pose the greatest risk.
        Speaker: Gerald Dugan (Cornell Univ.)
        transparencies
      • 16
        GLCTA and C & X Options
        GLCTA (Global Linear Collider Test Accelerator) is a facility to demonstrate that we are ready to build a linear collider with a warm technology. It is a great and important step to realize the LC project. We have built the GLCTA at KEK and just started a high-power test of an X-band accelerating structure. In the near future,we will accelerate an ultra low-emittance beam from the ATF. It should be a good and direct demonstration of the GLC accelerator complex. C-band accelerator has succeeded in accelerating a beam at the injector of KEKB. In the early stage of the LC, C-band technology may be the best technology because of its simplicity and reliability. To reach 1TeV or higher energy, however, X-band technology is indispensable. We have studied to operate both C-band and X-band simultaneously in LC main linac. I will report on the status and future prospects of the GLCTA and C+X option.
        Speaker: Sanuki, T. (Univ. of Tokyo)
        transparencies
      • 17
        The Fermilab LC R&D Program
        Fermilab is the only laboratory in the US Laboratory that is collaborating on both warm (NLC) and SRF (TESLA) linear collider technology R&D. Fermilab's contributions and plans to these accelerator hardware R&D will be discussed. New initiatives in the accelerator physics, ground motion etc. at Fermilab will be presented. A proposal and scope of a next generation Linear Collider Engineering Test Facility will be discussed.
        Speaker: Mishra, S. (FNAL)
        transparencies
    • Higgs and EWSB Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners: Rick Van Kooten, Howard Haber, Klaus Desch, Satoru Yamashita

      • 18
        Higgs Theory Overview
        Speaker: Howard Haber (University of California, Santa Cruz)
        transparencies
      • 19
        Radiaitve Corrections to nu nu H and ttH
        Speaker: Stefan Dittmaier (MPI, Munich)
        transparencies
      • 21
        Hadronic Branching ratio of a SM-like Higgs boson at a future linerar collider
        Speaker: Thorsten Kuhl (DESY, Hamburg)
        transparencies
      • 10:00
        Coffee Break
      • 22
        Higgs Branching Fractions at 1 TeV
        Speaker: Timothy Barklow (SLAC)
        transparencies
      • 23
        The Importance of W-->qq Resolution
        Speaker: John Hauptman (Iowa State University)
        transparencies
      • 24
        Simulation of ttH and extraction of top Yukawa coupling
        Speaker: Auguste Besson (IReS - Strasbourg)
        transparencies
      • 25
        New Physics from Higgs self-coupling measurement
        Speaker: Yasuhiro Okada (KEK)
        transparencies
      • 26
        A study of self-coupling measurement at about 1 TeV
        Speaker: Satoru Yamashita (University of Tokyo, ICEPP)
        transparencies
    • New physics at TEV scale and precision EW studies Salle Stourdze

      Salle Stourdze

      Conveners:G. Wilson, J. Hewett, K. Moenig, K. Ruckl, K. Hikasa,S. Raychaudhuri

      • 27
        How to study weakly coupled neutral vector bosons
        Speaker: Ayres Freitas (Fermilab)
        transparencies
      • 28
        Aspects of new gauge boson searches at LHC/LC
        Speaker: Sabine Riemann (DESY Zeuthen)
        transparencies
      • 29
        The Non-Commutative Standard Model at a Photon Collider
        Speaker: Juergen Reuter (Karlsruhe)
        transparencies
      • 30
        Using radiated photons to tag new physics
        Speaker: Sreerup Raychaudhuri (Indian Inst. Tech., Kanpur)
      • 31
        Charge asymmetry in gg -> l+l-,neutr. with polarized photons
        Speaker: Ilya Ginzburg (Sobolev Inst)
        transparencies
    • Simulation: General Frameworks Salle B

      Salle B

      Conveners: M. Peskin, D. Ward, K. Fujii

      • 32
        LCIO - Persistency and Data Model for LC Simulation and Reconstruction
        Speaker: Dr Frank Gaede (DESY IT)
        transparencies
      • 33
        Software tools for GLC studies
        Speaker: Akiya Miyamoto (KEK)
        transparencies
      • 34
        A Hybrid MC system
        Speaker: Mike Ronan (Berkeley)
        transparencies
      • 35
        Status of Brahms and Simdet
        Speaker: Harald Vogt (DESY Zeuthen)
        transparencies
      • 36
        LELAPS: A fast simulation tool for LC studies
        Speaker: Michael Peskin (for Willy Langeveld) (SLAC)
        transparencies
    • Top and QCD Salle A

      Salle A

      Conveners:P. Burrows, A. Brandenburg, L. Orr, S. Rindani

      • 37
        Status of NNLO 3-jet Calculations
        The process e+ e- -> 3 jets offers the opportunity to measure the strong coupling constant. For an accurate determination, precise theoretical calculations are necessary. I will give an overview on the status of the next-to-next-to-leading order calculations.
        Speaker: Weinzierl,S. (MPI, Munich)
        more information
      • 38
        Luminosity Spectra and the Top Threshold
        Speaker: Boogert, S. (UCL)
        more information
        more information
      • 39
        Impacts of a Precise Top Mass Measurement
        Speaker: Weiglein, G. (IPPP, Durham)
        more information
      • 10:00
        coffee break
    • Global Detector Network Salle B

      Salle B

      Conveners: Joachim Mnich, Mike Hildreth, Rick van Kooten, Kejsuke Fujii, Vaclav Vrba

      • 40
        Summary of previous GDN workshops
        Speaker: Joachim Mnich (Deutsches Elektronen Synchrotron (DESY))
      • 41
        Data acquisition in the GDN
        Speaker: Eckerlin, G. (DESY)
      • 42
        Experience with D0 remote shifts
        Speaker: Le Du, P. (Saclay)
      • 43
        Discussion
    • Machine-Detector interface Auditorium Poincare

      Auditorium Poincare

      Conveners: T. Tauchi, M. Woods, P. Bambade

      • 44
        Welcome and presentation of agenda
        Speaker: Bambade, P. (LAL-Orsay)
        more information
        more information
      • 45
        Summary of crossing-angle January 19 workshop
        Including some updates and cross-references to relevant talks in SUSY session and by Lohmann, Drugakov and Hauptman
        Speaker: Bambade, P. (LAL-Orsay)
        more information
      • 46
        Alternative IR geometries for TESLA with small crossing angles (A. vertical, B. horizontal)
        Includes a few slides contributed by Bambade, Mouton and Napoly for point B
        Speaker: Appleby, R (Daresbury)
        more information
      • 47
        Study of beam background at GLC including estimation by the BDS simulation from the exit of the LINAC to the beam dump
        Includes contributions from Aihara and comments on the extraction line design
        Speaker: Aso, T. (Toyama National College)
        more information
      • 48
        Beam-induced background calculation in TESLA with l*=4.1m optics and description of new masking scheme with/without 2*10mrad crossing-angle
        Speaker: Stahl, A. (for Bรผsser, K.) (DESY)
        more information
        more information
      • 49
        IR Design (collimation, backgrounds, crossing angle)
        Includes some summarizing comments on the different crossing-angle schemes
        Speaker: Markiewicz, T. (SLAC)
        more information
    • Simulation :Reconstruction Salle Stourdze

      Salle Stourdze

      Conveners: M. Peskin, D. Ward, K. Fujii

      • 50
        Flavour Tagging performance analysis for vertex detectors
        Speaker: Sonja Hillert (Oxford)
        transparencies
      • 51
        Vertex Reconstruction Toolkit and Interface to Generic Objects (VERTIGO)
        Speaker: Dr Winfried Mitaroff (AUSTRIAN ACADEMY OF SCIENCES // INSTITUTE OF HIGH ENERGY PHYSICS)
        transparencies
      • 52
        Cluster finding in CALICE calorimeters
        Speaker: Chris Ainsley (Cambridge)
        transparencies
      • 53
        Calorimeter clustering with minimal spanning trees
        Speaker: Georgios Mavromanolakis (Cambridge)
        transparencies
      • 54
        Performance studies and particle flow algorithm using GEM HCAL
        Speaker: Andy White (p.p. Jae Yu) (Texas at Arlington)
        transparencies
      • 55
        Full Simulation and Reconstraction Analysis with Brahms (G3)
        Speaker: Valeri Saveliev (DESY)
        transparencies
      • 56
        GEANT4-based full-detector and Test Beam simulation
        Speaker: Dhiman Chakraborty (Northern Illinios)
        transparencies
      • 57
        Two particle separation using tile HCAL
        Speaker: Alexei Raspereza (DESY)
        transparencies
    • gamma-gamma, e-gamma Salle A

      Salle A

      Conveners: T. Takahashi, J. Gronberg, M. Krawcyk

      • 58
        Brief Report on Technology from Asia
        Speaker: Takahashi, T.
      • 59
        Status of the MERCURY laser
        Speaker: Gronberg, J.
        transparencies
      • 60
        Brief Report on Technology from Europe
        Speaker: Moenig, K.
        transparencies
      • 61
        Total cross-sections: cross-talk between HERA, LHC and LC
        Speaker: Pancheri, G.
        transparencies
      • 62
        New-Physics Search in gammagamma -> tbar{t}
        Speaker: Hioki, Z.
        transparencies
      • 63
        Some beyond SM physics at gamma-gamma colliders
        Speaker: Cheung, K.
        transparencies
      • 64
        Comparison of warm and cold photon colliders
        Speaker: Telnov, V.
        transparencies
      • 65
        Study of PLC Beam Dump
        Speaker: Telnov, V.
      • 12:00
        LUNCH
    • Calorimetry and muons Auditorium Poincare

      Auditorium Poincare

      Conveners: J.C.Brient , D.Chakraborty, K.Kawagoe, M.Piccolo

      • 66
        LC muon detector: An update of the ECFA studies
        Speaker: M. Piccolo (INFN-LNF)
        transparencies
      • 67
        R&D for RPC detector
        Speaker: T. Tabarelli de Fatis (Univ. Milano)
        transparencies
      • 68
        Muon and particle Id.
        Speaker: G. Fisk (FNAL)
        transparencies
      • 69
        Review of the forward calorimetry
        Speaker: L. Zawiejski (INP Cracow)
        transparencies
    • Loop calculations Salle Stourdze

      Salle Stourdze

      Conveners: J.Fujimoto, U.Baur, S.Dittmaier

      • 70
        Recent Results on Sudakov Logarithms in Electroweak Processes
        Speaker: Kuehn, J. (Karlsruhe)
        more information
        more information
      • 71
        Electroweak Logarithms at Two Loops
        Speaker: Pozzorini, S. (Karlsruhe)
        transparencies
      • 72
        Recursive Numerical Calculus of One-loop Tensor Integrals
        Speaker: Pittau, R. (INFN Torino)
        transparencies
      • 73
        Electroweak Corrections to Deep Inelastic Neutrino Scattering
        Speaker: Arbuzov, A. (Dubna)
        transparencies
    • Polarization Salle A

      Salle A

      Conveners: Gudrid Moortgat-Pick, Tsunehiko Omori, Mike Woods

      • 74
        Physics Motivation for polarised e- and e+ Beams
        Speaker: G. Moortgat-Pick (IPPP Durham)
        more information
      • 75
        Photocathode and Gun of highly polarized Electron Source for GLC
        Speaker: Hitoshi Yamamoto (Tohoku Univ.)
        more information
      • 76
        Polarized Positron Source
        Speaker: Tsunehiko Omori (KEK)
        more information
        more information
      • 77
        Status Report of the E166 Experiment: A polarized Positron Source for future Linear e+e- Colliders
        Speaker: Thomas Schweizer (Humboldt Univ., Berlin)
        more information
      • 78
        Discussion
    • Tracking and vertexing: Silicon R&D I Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners:M.Winter, HB. Park, D.Karlen, B.Schumm

      • 79
        Status of CCD-based vertex detector R&D for a linear collider
        Studies of CCD-based vertex detector for a linear collider are presented. In 2003 physical year, our work was focused on the aspects of radiation tolerance for the high energy electrons and charge diffusion time for faster readout operation. This talk gives an overviwe of our current results and future plans.
        Speaker: Aso, T. (Toyama National College)
        transparencies
      • 80
        LCFI Collaboration Status Report
        The LCFI collaboration is conducting a comprehensive research and development programme towards a silicon pixel-based vertex detector for the future LC. The latest results in the development and prototyping of column parallel CCDs, their associated readout electronics and ultra-low mass ladders will be discussed, along with future plans.
        Speaker: Joel Goldstein
        transparencies
      • 81
        Status Report on the MAPS Detectors for the Warm and the Superconductor Options of the FLC
        Very high granularity, very modest material budget, fast read-out and radiation hard sensors are required for construction of the Vertex Detector, providing the measurement precision asked by the physics programme at the Future e+e- Linear Collider (FLC). Various versions of MAPS detectors, searching for optimum operation under given experimental conditions, are being developed within the IReS-LEPSI collaboration in Strasbourg. The detectors are produced in the form of VLSI chips using standard CMOS processes. The active volume is a thin, moderately doped silicon layer, operated undepleted. The key is the use of an n-well-to-substrate diode to collect, mostly through thermal diffusion, the charge (electrons) generated in the active volume underneath the readout electronics.
        Speaker: Grzegorz Deptuch
        transparencies
      • 82
        Status and first results of the UK active pixel collaboration
        We are developing CMOS monolithic active pixel sensors for the vertex detector for the future Linear Collider. We have produced two working test structures designed in 0.25 CMOS which feature four different types of pixels: standard 3MOS, 4MOS allowing correlated double sampling, charge amplifier pixels and a Flexible APS. The FAPS has a 10 deep pipeline on each pixel specifically designed for the linear collider. A program to test our devices is well underway. We will report results of a radiation test including measurements and simulations. Also results of a source test will be presented.
        Speaker: Jaap Velthuis
        transparencies
      • 83
        Design and Technology of DEPFET Active Pixel Sensors for Future e+e- Linear Collider Experiments
        A new generation of DEPFET (DEPleted Field Effect Transistor) active pixel sensors with 25 micrometer pixel size has been developed and produced to meet the requirements of the future e+e- linear collider physics program in point measurement resolution and multiple track separation. A silicon technology is presented which allows the production of large sensor arrays consisting of linear DEPFET pixel cells. The DEPFET concept combines detection and amplification in one single device. The signal charge is stored underneath a MOSFET channel and allows a row-wise read out with only one row being electrically active at a time. The envisaged pixel array offers therefore low noise and low power operation. We will present the operation principles and the results of the first prototype production.
        Speaker: Gerhard Lutz
        transparencies
    • e- e- physics Salle B

      Salle B

      Conveners: C. Heusch, J. Gunion

      • 84
        e-e-: Introduction and brief overview
        Speaker: Heusch, C (U.C. Santa Cruz and SLAC)
      • 85
        Luminosity expectations
        Speaker: Raubenheimer, T. (SLAC)
      • 86
        IR and beam delivery, e+/e- compatibility
        Speaker: Markiewicz, T. (SLAC)
      • 87
        e-e- at TESLA -- where do we stand?
        Speaker: TESLA representative
      • 88
        Loop-level flavor and number violation in e-e- collisions
        We present a study of the loop-level lepton number violating signal e-e- ---> l- l- (l = \mu, \tau) in models with heavy Majorana neutrinos and of the reactions e- e- ---> l- e- (l = \mu, \tau) in the supersymmetric extension of the standard model with slepton mixing.
        Speaker: Cannoni, M. (LPNHE)
      • 89
        Physics motivations for e-e- collisions
        Some of the physics motivations for e-e- collisions are reviewed.
        Speaker: Gunion, J (U.C. Davis)
    • Data Acquisition Salle A

      Salle A

      Conveners: Usha Mallik, Takeshi Matsuda, Patrick Le Du, Guenter Eckerlin

      • 90
        LC DAQ Introduction and Overview
        Speaker: Eckerlin, G. (DESY)
        transparencies
      • 91
        Vertex Detector Readout at the Linear Collider
        Speaker: Joel Goldstein
        transparencies
      • 92
        LC TPC electronics
        Speaker: Colas, P. (Saclay)
        transparencies
      • 93
        Readout card for TPC prototypes
        Speaker: Martin, J-P. (Univ. of Montreal)
        transparencies
      • 94
        DAQ for ECAL and tile HCAL
        Speaker: Dauncey, P. (Imp. College London)
        transparencies
    • Machine-detector Interface Auditorium Poincare

      Auditorium Poincare

      Conveners: T. Tauchi, M. Woods, P. Bambade

      • 95
        Physics impact of beam-beam hadron background
        Includes results from Barklow, Murayama and Abe
        Speaker: Desch, K. (DESY)
        more information
        more information
      • 96
        Summary of Prague workshop on instrumentation in the very forward region
        Coordinating with J. Hauptman's talk in the same session.
        Speaker: Lohmann, W. (DESY)
        more information
      • 97
        Detection of very forward Bhabha events and electron ID algorithm
        Continuing the previous talk and including results by Murayama and Graf on the electron ID algorithm
        Speaker: Lohmann, W. (for Drugakov, V.) (DESY)
        more information
        more information
      • 98
        Detector technologies for forward calorimeters (quartz fiber-tungsten, Si-W, gas cherenkov-W, PbW04)
        Coordinating with W. Lohmann's talk in the same session
        Speaker: John Hauptman (Iowa State University)
        more information
      • 99
        Beamstrahlung monitor
        Includes a few slides contributed by Bonvicini on his proposal
        Speaker: Delerue, N. (KEK)
        more information
      • 100
        Pair (beam profile) monitor
        Includes analysis using pair profiles from the planned 7 mrad GLC crossing-angle (possibly also 20 mrad)
        Speaker: Yamamoto, H. (Tohoku University)
        more information
    • Simulation Salle Stourdze

      Salle Stourdze

      Conveners: M. Peskin, D. Ward, K. Fujii

      • 101
        Geant4 simulation for the FLC detector models with Mokka
        Speaker: Gabriel Musat (Ecole Polytechnique)
        transparencies
      • 102
        Mokka, main guidelines and future
        Speaker: Paulo Mora de Freitas (L.L.R. Ecole Polytechnique/IN2P3)
        transparencies
      • 103
        Adding electronics effects to the CALICE simulation
        Speaker: Catherine Fry (Imperial College)
        transparencies
      • 104
        Comparisons of hadronic shower packages
        Speaker: Georgios Mavromanolakis (Cambridge)
        transparencies
      • 105
        Simulation of CALICE using Fluka
        Speaker: Nigel Watson (Rutherford)
        transparencies
      • 106
        Hadronization with the event generator SHERPA
        Speaker: Stefan Schumann (Dresden)
        transparencies
      • 107
        New reconstruction technique developed for HCAL prototype
        Speaker: Behnke, T (for Morgunov, V (ITEP Moscow)) (DESY)
        transparencies
    • Susy studies Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners: J.Feng, U.Nauenberg, R.Godbole, U.Martyn

      • 108
        Programme SUSY@LCWS 04
        Speaker: A Convener
        transparencies
      • 109
        The SPA project and conventions - a proposal for a Supersymmetry Parameter Analysis
        Speaker: W. Majerotto (HEPHY Vienna)
        transparencies
      • 110
        Experimental tools for SPA
        Speaker: P. Wienemann (DESY)
        transparencies
      • 111
        Complete one-loop calculations in the chargino/neutralino sector of the MSSM and SPA conventions
        Speaker: T. Fritzsche (MPI Munich)
        transparencies
      • 112
        Sleptons: Masses, Mixings, Couplings
        Speaker: Ayres Freitas (Fermilab)
        transparencies
    • gamma-gamma, e-gamma (joint w/ Higgs) Salle B

      Salle B

      Conveners: T. Takahashi, J. Gronberg, M. Krawcyk

      • 113
        Tau polarisation in $\gamma \gamma \rightarrow \phi \rightarrow \tau \bar \tau$ as a probe of CP violation in the Higgs sector.
        Speaker: Godbole, R.
        transparencies
      • 114
        Determination of CP violating H-A mixing from h_2-> WW/ZZ decays in 2HDM: PLC and comparison with LHC and LC
        Speaker: Zarnecki, A.F.
        transparencies
      • 115
        Explicit CP Violation in the Higgs Sector at GammaGamma Colliders and other Future Colliders
        Speaker: Velasco, M.
        transparencies
      • 116
        Studying Higgs bosons by top pair production at photon colliders
        Speaker: Asakawa, E.
        transparencies
      • 117
        MSSM Higgs sector CP violation at photon colliders
        Speaker: Chung, B.
        transparencies
      • 118
        Symmetries in 2HDM, CP violation and heavy Higgs effects at PLC
        Speaker: Ginzburg, I.
      • 16:30
        collation
    • Late afternoon Plenary Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 119
        Report from ITRP
        Speaker: Barry Barish
        more information
        transparencies
      • 120
        Colloqium: The need for Precision Measurements
        Speaker: Ed Witten
        transparencies
  • Wednesday 21 April
    • Calorimetry and muons Auditorium Poincare

      Auditorium Poincare

      Conveners: J-C. Brient, D.Chakraborty , K.Kawagoe , M.Piccolo

      • 121
        Analog tile HCAL prototype
        Speaker: M. Danilov (ITEP)
        transparencies
      • 122
        Results from minical tile HCAL
        Speaker: E. Garutti (DESY)
        transparencies
      • 123
        APD studies for tile HCAL
        Speaker: J. Cvach (IOP-Prague)
        transparencies
      • 124
        Photosensors for scintillator strips
        Speaker: T. Takeshita (Shinshu Univ.)
        transparencies
      • 125
        Dual readout calorimeter
        Speaker: John Hauptman (Iowa State University)
        transparencies
    • Loop Calculations Salle A

      Salle A

      Conveners: J.Fujimoto, U.Baur, S.Dittmaier

      • 126
        Contributions to 2-loop QED Bhabha Scattering
        Speaker: Gluza, J. (DESY Zeuthen)
        transparencies
      • 127
        Comparison of Exact Results for the Virtual Correction to Bremsstrahlung in e+ e- Annihilation at High Energies
        Speaker: Yost, S. (Baylor)
        transparencies
      • 128
        Radiative Corrections to Neutrino Nucleon Scattering in the MSSM
        Speaker: Brein, O. (Aachen)
        transparencies
      • 129
        Two-loop SUSY corrections to the Anomalous Magnetic Momentof the Muon
        Speaker: Stockinger, D. (IPPP Durham)
        transparencies
    • Machine-Detector Interface Salle B

      Salle B

      Conveners: T. Tauchi, M. Woods, P. Bambade

      • 130
        Energy Spectrometers
        Includes 1-2 slides contributed by Schreiber on DESY design updates
        Speaker: Hildreth, M. (Notre Dame University)
        more information
      • 131
        Energy spread effects; energy precision
        Speaker: Timothy Barklow (SLAC)
        more information
        more information
      • 132
        Energy spectrum measurement at the extraction line
        Includes some comments on the GLC extraction line design
        Speaker: Kubo, K. (KEK)
        more information
        more information
      • 133
        Luminosity spectrum extraction from Bhabha events
        Includes a few slides on similar work by Kurihara
        Speaker: Boogert, S. (UCL)
        more information
        more information
      • 134
        Reserve time used for discussion on how we want to organize future MDI work and collaboration
        We would like to list the relevant topics where work and collaboration could be enhanced by organizing informal inter-regional working groups. The discussion needs some preparation. Among the topics are for instance issues to do with having 2 IRs with comparable luminosity and energy, one of which with a crossing-angle large enough to make possible the option of a future gg-collider upgrade
        Speaker: Convenors and All
        more information
        more information
    • Susy studies Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners: J.Feng, U.Nauenberg, R.Godbole, U.Martyn

      • 135
        SUSY dark matter and Linear Collider experiments
        Speaker: M. Peskin (SLAC)
        transparencies
      • 136
        Neutralino dark matter and the Linear Collider
        Speaker: H. Baer (Florida SU)
        transparencies
      • 137
        Studies of CDM-inspired cMSSM scenarios at a 1 TeV LC
        Speaker: M. Battaglia (LBL)
        transparencies
      • 138
        Experimental implication for a Linear Collider of the SUSY dark matter scenario
        Speaker: Z. Zhang (Orsay)
        transparencies
      • 139
        Uncertainties in the relic density calculations in mSUGRA
        Speaker: G. Belanger (LAPP Annecy)
        transparencies
      • 11:15
        break
      • 140
        SDECAY - a code for the decays of the supersymmetric particles in the MSSM
        Speaker: M. Muehlleitner (PSI)
        transparencies
      • 141
        Impact of combined analyses at the LHC and LC in Susy searches
        Speaker: G. Moortgat-Pick (IPPP Durham)
        transparencies
      • 142
        Reconstructing supersymmetric theories by coherent LHC/LC analyses
        Speaker: W. Porod (Uni Zurich)
        transparencies
    • Tracking and Vertexing: Silicon R&D II Salle Stourdze

      Salle Stourdze

      Conveners:M.Winter, HB. Park, D.Karlen, B.Schumm

      • 143
        Status of the SOI monolithic active pixel detector development
        The monolithic active pixel detector realized in the Silicon on Insulator technology (SOI) is a novel solution of ionising radiation detectors, which allows integration of the particle detector and readout electronics in one entity by the utilization of the both silicon layers (support and device layers) of a wafer-bonded SOI substrate. First test structures of the SOI detectors have been manufactured and preliminary characterized. The performed sensor tests with an infrared laser spot and radioactive sources proved the sensor sensitivity for the ionising radiation and validate the concept of the device. Following the positive results of the SOI detector test structures measurements the fully functional SOI detector, covering area of 2 cm x 2 cm have been designed. The resent results of the SOI detector measurements and the architecture the new SOI sensor will be presented.
        Speaker: Halina Niemiec
        transparencies
      • 144
        The Integrated Pixel Tracker
        We propose the Integrated Pixel Tracker (IPT), a device that is part of the vertex detector based on the MIMOSA CMOS pixel sensor. The IPT takes raw data from the pixel sensors, and applies real-time data reduction in two steps by means of hardware: cluster collection on a local level and track reconstruction on a global level. Only the track features are stored on disk. We also discuss our progress on the demonstrator of the IPT, which is a sample system that presents the functionality of the IPT but not the performance, and we give an outlook.
        Speaker: Miran Djordjevic
        transparencies
      • 145
        Processing of Ultra Thin Silicon Sensors for Future e+e- Linear Collider Experiments
        A new generation of DEPFET active pixel sensors with 25 um pixel size is currently being developed to meet the requirements in the point measurement resolution and multiple track separation. To minimize the influence of the multiple scattering on the impact parameter resolution, the sensors have to be made as thin as possible. We will present a technology based on direct wafer bonding and deep anisotropic etching for the production of ultra thin fully depleted sensors with electrically active back side. PiN diodes with 50 um thickness have been produced in this way and the results show the feasibility of this approach. A module concept for thin DEPFET arrays with an integrated support frame outside of the sensitive area will be presented.
        Speaker: Ladislav Andricek
        transparencies
      • 146
        Report of silicon R&D activities in Korea
        We will report on the silicon R&D activities in Korea for the future Linear Collider. The activities includes design, production and simulation of double-side silicon strip sensors. The charateristics of our first prototype sensors and the results of simulation will be presented.
        Speaker: Jik Lee
        transparencies
      • 147
        Irradiation tests of GaAs:Cr detectors in Protvino and prospects for LC tracking
        Expected properties of a resistive structure of gallium arsenide doped by Chromium, GaAs:Cr, are discussed. Pad GaAs:Cr detectors of the size 10mm*10mm are presented as an output of new technologies developed in Tomsk. Results of the recent tests of radiation hardness of these detectors in hadron and gamma beams are reported. Further plans for direct comparison of GaAs:Cr detectors and Si detectors are shown and prospects are discussed for using GaAs:Cr as a material for pixel vertex and tracking detectors at small angles.
        Speaker: Yuri Arestov
        transparencies
      • 148
        R&D Towards a Short-Shaping Time Silicon Tracker at Santa Cruz
        We present the progress of the hardware program on short-shaping time microstrip readout at UC Santa Cruz.
        Speaker: Bruce Schumm
        transparencies
      • 149
        Latest Progresses on the R&D on Silicon Tracking for the LC
        Latest results, within the SiLC R&D program, on the measurements achieved with a long ladder prototype with microstrips of length up to 2m24, on the design and simulation studies of a complete FE and readout electronics chain, on the CAD mechanical design of such a tracking system and related integration issues, on the thermo-mechanical studies are presented as well as the near future prospects.
        Speaker: Aurore Savoy-Navarro
        transparencies
    • Data Acquisition Salle A

      Salle A

      Conveners: Usha Mallik, Takeshi Matsuda, Patrick Le Du, Guenter Eckerlin

      • 150
        Performance and Occupancies in a CCD Vertex Detector with Endcaps
        Speaker: Abe, T. (SLAC)
        transparencies
      • 151
        Occupancy in the SiD Tracker
        Speaker: Jaros, J. (SLAC)
        transparencies
      • 152
        DAQ from present to future (from CDF/D0 to BTev and LHC)
        Speaker: Le Du, P. (Saclay)
        transparencies
      • 153
        Discussion
        Accelerator and detector DAQ interplay - Do we need joint MDI/DAQ sessions ? Detector R&D and DAQ interplay - Do we need joint tracking/Calorimetry/DAQ sessions? GND issues for the DAQ ?
        Speaker: All
    • New Physics at TeV scale and precision electroweak Auditorium Poincare

      Auditorium Poincare

      Conveners:G. Wilson, J. Hewett, K. Moenig, K. Ruckl, K. Hikasa, S. Raychaudhuri

      • 154
        Phenomenology of Higgsless Models
        Speaker: Tom Rizzo (SLAC)
        transparencies
      • 155
        How to do Electroweak Physics without a Higgs
        Speaker: Christophe Grojean (CEA-Saclay)
        transparencies
      • 156
        Little Higgs phenomonology
        Speaker: Wolfgang Kilian (DESY)
        transparencies
      • 157
        Search for extra gauge bosons in little Higgs models at a linear collider
        Speaker: Gi-Chol Cho (Ochanomizu University)
        transparencies
    • Top and QCD Salle Stourdze

      Salle Stourdze

      Conveners:P. Burrows, A. Brandenburg, L. Orr, S. Rindani

      • 158
        Signature of Perturbative Pomeron in Exclusive Production in gamma* gamma* Processes
        Speaker: Wallon, S. (LPT Orsay)
      • 159
        t tbar higgs Yukawa Coupling Measurement
        The (e+e- -> t tbar H) process has been extensively studied to determine the accuracy on the top-Higgs Yukawa coupling achievable with the TESLA collider at 800 GeV, for Higgs masses ranging from 120 GeV/c2 to 200 GeV/c2. The analysis of (H -> b bbar) and (H -> WW) channels has already shown that an accuracy on the top-Higgs Yukawa coupling better than about 10 % was achievable for most of the Higgs masses below 200 GeV/c2. Present work is going on in order to improve the precision on the coupling by including the Higgs decays into Z pairs. The analysis is also being extended to higgs bosons heavier than 200 GeV/c2. First results of these extensions of the analysis will be presented.
        Speaker: Auguste Besson (IReS - Strasbourg)
        more information
        more information
      • 160
        Heavy Quarks at Threshold: Recent Developments
        Recent developments in the treatment of a system of heavy quarks close to their production threshold are discussed. Particular emphasis is put on the next-to-next-to-next-to-leading order corrections to the energy levels and the wave function and their effect on the cross section sigma(e+e- -> t tbar). Furthermore, the resummation of logarithmic corrections within the framework of potential NRQCD are considered.
        Speaker: Steinhauser, M. (Hamburg)
        more information
    • gamma-gamma, e-gamma (joint w/ Higgs) Salle B

      Salle B

      Conveners: T. Takahashi, J. Gronberg, M. Krawcyk

      • 161
        NMSSM Scenarios with Higgs to Higgs decays in which e+e- and gam gam colliders will be essential for understanding the Higgs sector.
        Speaker: Gunion, J.
        transparencies
      • 162
        Improved analysis on gamma gamma -> H -> bb including overlaid events, vertex smearing and crab crossing for SM and MSSM
        Speaker: Niezurawski, P.
        transparencies
      • 163
        Determining tan(beta) in tau tau Fusion of SUSY Higgs Bosons at a Photon Collider
        Speaker: Zerwas, P.M.
        transparencies
      • 164
        Determination of h couplings from WW/ZZ decays in CP-conserving 2HDM: PLC and comparison with LC and LHC
        Speaker: Zarnecki, A.F.
        transparencies
      • 165
        Radion physics at a gamma-gamma collider
        Speaker: Gunion, J.
        transparencies
      • 166
        The Little Higgs boson at a photon collider
        Speaker: Gunion, J. ( for Heather Logan)
        transparencies
      • 12:30
        LUNCH
    • Accelerator Physics topics Salle A

      Salle A

      Conveners:R. Patterson, G.Blair, T. Nakanishi

      • 167
        Fourier series damping ring kicker for TESLA
        The large size of TESLA's damping rings is dictated by the performance of the kicker, which must eject every nth bunch while leaving adjacent bunches undisturbed. The speed with which the kicker fields can stabilize, then turn off, determines the minimum space between damping ring bunches, and therefore the minimum cirumference of the damping ring. Novel schemes which might permit a considerable reduction in damping ring circumference will be described.
        Speaker: Gollin, G. (Univ. of Illinois)
        transparencies
      • 168
        Laserwire system at PETRA
        Speaker: Boogert, S. (UCL)
        transparencies
      • 169
        Beam-based Intra Train Feedback Systems
        I will present the results of the FONT and FEATHER experiments on hardware prototyping and beam tests of the intra-train feedback system components.
        Speaker: Burrows, P. (Queen Mary, Univ of London)
        transparencies
      • 170
        DR to IP Simulations and feedback
        Speaker: White, G. (Queen Mary, Univ of London)
        transparencies
      • 171
        Permanent Final Focus Magnet
        A super strong magnet, which utilizes permanent magnet material and saturated iron, is considered as a candidate for the final focus quadrupole in a linear collider beamline. This modified Halbach magnet configuration can have a higher magnetic field gradient than a normal permanent magnet quadrupole (PMQ) or electromagnet. There are some issues to be solved if a PMQ is to be used as a final focus quadrupole: the variation of its strength with temperature and the need for the field strength to be deliberately changed. One can use special temperature compensation material to improve the temperature dependence with just a small decrease in field gradient compared to a magnet without temperature compensation. The required field variability can be obtained by slicing the magnet into pieces along the beamline direction and rotating these slices. The realization of the temperature compensation technique in a prototype magnet and a design with rotating slices will be discussed.
        Speaker: Dr Yoshihisa Iwashita (Kyoto University)
        transparencies
      • 172
        Final Focus at the IR (FFIR)
        Speaker: Tauchi, T. (KEK)
        transparencies
    • Calorimetry and muons Auditorium Poincare

      Auditorium Poincare

      Conveners: K.Kawagoe, D.Chakraborty, J.C.Brient , M.Piccolo

      • 173
        RPC DHCAL R&D at Protvino
        Speaker: V. Ammosov (IHEP-Protvino)
        transparencies
      • 174
        RPC R&D for DHCAL at ANL
        Speaker: D. Underwood (ANL)
        transparencies
      • 175
        GEM's HCAL R&D
        Speaker: A. White (Univ. Texas Arlington)
        transparencies
      • 176
        scintillator HCAL tail catcher
        Speaker: V. Zutshi (North Illinois Univ.)
        transparencies
      • 15:25
        small break 10mn
      • 177
        R&D for small tile ECAL
        Speaker: H. Miyata (Niigata Univ.)
        transparencies
      • 178
        R&D of strip-array ECAL
        Speaker: K.Kawagoe
        transparencies
      • 179
        LCcal: a hybrid technique for ECAL.Test beam results and perspectives
        Speaker: P. Checchia (INFN- Padova)
        transparencies
      • 180
        Status report on PFA development
        Speaker: Dhiman Chakraborty (Northern Illinios)
        transparencies
    • New Physics at TeV scale and precision electroweak Salle Stourdze

      Salle Stourdze

      Conveners:G. Wilson, J. Hewett, K. Moenig, K. Ruckl, K. Hikasa, S. Raychaudhuri

      • 181
        Triple gauge couplings in gamma gamma and egamma interactions
        Speaker: Jadranka Sekaric (DESY Zeuthen)
        transparencies
      • 182
        SUSY one-loop contribution to W pair production
        Speaker: Shinya Kanemura (Osaka University)
        transparencies
      • 183
        3 Gauge boson production
        Speaker: Michael Beyer (Rostock)
      • 184
        Role of transverse beam polarization in constraining new physics
        Speaker: Saurabh Rindani (Ahmedabad)
        transparencies
      • 185
        New Phyiscs with e+ polarization
        Speaker: G. Moortgat-Pick (IPPP Durham)
        transparencies
    • SUSY studies Salle B

      Salle B

      Conveners: J.Feng, U.Nauenberg, R.Godbole, U.Martyn

      • 186
        Study of neutralino production using tau identification
        Speaker: B. Sobloher (DESY)
        transparencies
      • 187
        CP Violation in SUSY
        Speaker: S. Hesselbach (Uni Wien)
        transparencies
      • 188
        Probing the Majorana nature and CP properties of neutralinos
        Speaker: S. Y. Choi (Chonbuk Univ)
        transparencies
      • 189
        Slepton-flavour violation
        Speaker: Reinhold Rueckl (Wurzburg)
        transparencies
      • 190
        Correlating LSP decay properties with neutrino mixing angles
        Speaker: W. Porod (Uni Zurich)
        transparencies
    • Tracking and Vertexing: Gas detector R&D Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners:M.Winter, HB. Park, D.Karlen, B.Schumm


      We will have a short break around 15:30.

      • 191
        GEM-TPC performance in a magnetic field
        A prototype TPC with GEM readout was operated in axial magnetic fields for the first time at TRIUMF and DESY in the summer of 2003. Results from an updated analysis of cosmic ray tracks recorded with this device will be shown. Plans for further tests with the prototype TPC will be presented.
        Speaker: Dean Karlen
        transparencies
      • 192
        High magnetic field performance of a GEM-TPC
        One possible option for the main tracking device of a detector at a future Linear Collider is a large Time Projection Chamber (TPC). To replace the traditional wire based gas amplification system of a TPC, so called Micro Pattern Gas Detectors (MPGDs) are considered a good choice. One example of such a MPGD is the Gas Electron Multiplier (GEM). At DESY a prototype TPC equipped with GEMs has been built and tested in cosmic muon runs in a superconducting 5 T magnet. The tracking performance of a GEM TPC in high magnetic fields will be reported and compared to results without B field.
        Speaker: P. Wienemann (DESY)
        transparencies
      • 193
        The Karlsruhe TPC Protype: Results of beam tests at CERN and of a magnetic field test at DESY
        In order to study whether a TPC in combination with a Micro Pattern Gas Amplification stage can meet the demands of future Linear Collider central tracking systems, a small cylindrical TPC Prototype was built in Karlsruhe and equipped with two GEMs and highly-integrated front-end electronics. The studies imply two beam tests at the Proton-Synchrotron (PS) at CERN as well as a test in a superconducting magnet with a magnetic field of up to 5T at DESY. Here the results concerning efficiency, diffusion and spatial resolution will be presented. In the hadronic beam single-row efficiencies of 99.3% for all different gas mixtures could be reached. The spatial resolution shows good agreement in all tests and reaches values of down to 60 microns.
        Speaker: Jochen Kaminski
        transparencies
      • 194
        TPC R&D Activities using the MPI-Munich Protoype
        The LC TPC prototype built and commissioned at MPI-Munich is equipped with wire gas amplification now and is foreseen to also be modified for the Gem and Micromegas (MPGD) technologies. The chamber was transferred to Desy for testing with cosmics and lasers in the 5T magnet and with the readout electronics there. It will then be shipped to KEK for continuation of this series of measurements with final testing in a beam in June. MPGD planes are in preparation for this chamber. Status and results from these activities will be presented at the LCWS2004 tracking session; collaborating institutes include Desy, IPN Orsay, KEK + members of the CDC group, and MPI-Munich.
        Speaker: Ron Settles
        more information
      • 195
        First Magnetic Field Tests of a Large-Area Micromegas TPC
        We present first results on magnetic field tests of a Micromegas TPC using cosmic rays. The large-area TPC prototype (1024 channels, 50 cm drift and 50 cm diameter) has been in operation since July 2003 at Saclay. Results from data taken in November 2003 for both Ar-Isobutane and Ar-CF4 mixtures at various magnetic field settings will be shown.
        Speaker: Vincent Lepeltier
        transparencies
      • 196
        10 minute break
      • 197
        Readout of a TPC by means of the MediPix CMOS pixel sensor
        An 'ideal' readout scheme of a TPC would consist of gas multiplication by either one or more GEM or Micromegas foils, followed by a charge collection device with a granularity corresponding to the primary ionisation cluster spread (and assuming sufficiently low diffusion). A readout channel with granularity similar to the 'grid' size in GEM and Micromegas foils has been realised, as a first step, based on the existing MediPix2 chip. Hit-pixel data show the expected patterns from the conversion of Fe55 quanta in gas mixtures like Argon-Methane (95/5) and Argon-Isobutane (95/5). Measurements of detection of single electrons from minimum ionising particles are at present under way.
        Speaker: Jan Timmermans
        transparencies
      • 198
        First Tracking Experience for the MPGD TPC readout with Charge Dispersion
        If a TPC will be used as central detector at a high energy linear collider the spatial resolution must be improved. Charge amplification with micro pattern gas detectors (MPGD), such as GEMs and Micromegas, will eliminate large systematic effects inherent in the conventional proportional wire cathode pad readout TPC. However, the transverse confinement of the spatial charge in a magnetic field will make it harder for the MPGD readout to achieve good spatial resolution unless the readout pad width is reduced. We have previously demonstrated that a resistive anode can be used to disperse the MPGD charge after amplification to achieve good resolution with wide pads for a point x-ray source. We present here our first results for tracking studies of cosmic-ray particles in a GEM-TPC with a resistive anode.
        Speaker: Kirsten Sachs
        transparencies
      • 199
        Studies of Charge Broadening in Multi GEM Structures and Developement of a TPC
        In the framework of our studies of a GEM readout for a TPC at a Future Linear Collider we present studies on charge broadening effects and the shape of the cluster charge as a function of the magnetic field. Results of measurements with a test chamber in fields up to 5 T will be shown. For further studies a TPC is being built which is designed to fit into the 5T magnet at DESY. Numerical simulations to optimize the design of the field cage have been performed. A status report on the construction of this TPC will be given.
        Speaker: Astrid Muennich
        transparencies
      • 200
        Optimization of the Ion Feedback in a GEM Setup for a TPC Readout
        A critical factor in the design of a TPC for a Linear Collider is the amount of ions drifting back into the sensitive volume. To reduce this ion feedback, multi-GEM-structures are used, which further improve the intrinsic ion feedback suppression of single GEM foils. To optimize the operational parameters of such a structure extensive simulations have been performed. The simulations have been verified by measurements with a small test chamber as well as a large TPC. In addition initial studies on the impact of the ion feedback on the spatial resolution will be presented.
        Speaker: Michael Weber
        transparencies
      • 201
        Triple-GEM performance in He-based mixtures
        The unique advantage of He-based mixtures is that the ion mobilities in He are almost by an order of magnitude higher than that in Ar. Accordingly, using the He-based mixtures could help to solve the problem of ion accumulation in the TPC volume. On the other hand, the unique advantage of GEMs is that they can operate at high gains in pure noble gases, in particular in He and its mixtures with other non-ageing gases, such as N2, Kr, Ne, etc. In this paper, we study the performance of triple-GEM detectors in pure He and its mixtures with N2 and Kr, in the range of 1-10 atm. Ion backdrift, ion feedback and photon feedback effects are observed. Ion mobilities in He and He/N2 are estimated: namely, the drift times of ions between the GEMs are measured analysing ion backdrift- and ion feedback-induced signals.
        Speaker: Alexander Vasiljev
        transparencies
      • 202
        Central Tracker R&D in Asia
        In the past 10 years, we have been developing a mini-jet cell type cylindrical drift chamber as a central tracker for a warm cavity future linear collider. This talk will summarize our activities including developments made since the Jeju meeting.
        Speaker: Norik Khalatyan
        transparencies
    • Higgs and EWSB Salle A

      Salle A

      Conveners: Rick Van Kooten, Howard Haber, Klaus Desch, Satoru Yamashita

      • 203
        High precision predictions for the MSSM Higgs sector
        Speaker: Sven Heinemeyer (CERN)
        transparencies
      • 204
        Simulation of heavy SUSY Higgs Bosons
        Speaker: Alexei Raspereza (DESY)
        transparencies
      • 205
        M_A determination from h branching ratios with full parametric uncertainties
        Speaker: Lidija Zivkovic (Weizmann Institute of Science)
        transparencies
      • 206
        Pair production of charged and neutral Higgs bosons at CLIC
        Speaker: Arnaud Ferrari (Uppsala University)
        transparencies
    • Polarization Salle B

      Salle B

      Conveners: Gudrid Moortgat-Pick, Tsunehiko Omori, Mike Woods

      • 207
        TESLA Polarimeter
        Speaker: Peter Schueler (DESY, Hamburg)
        more information
        more information
      • 208
        Polarization Studies: Comparison of e+e- and e-e- for NLC and TESLA
        Speaker: Mike Woods (SLAC)
        more information
      • 209
        Physics Measurements for Polarimetry
        Speaker: Klaus Moenig (DESY, Zeuthen)
        more information
      • 210
        Discussion
    • new Physics at TeV scale and precision electroweak (joint with Loopverein) Salle Stourdze

      Salle Stourdze

      Conveners:G. Wilson, J. Hewett, K. Moenig, K. Ruckl, K. Hikasa,S. Raychaudhuri

      • 211
        Experimental results on the muon g-2
        Speaker: Klaus Jungmann (KVI Groningen)
        transparencies
      • 212
        Next-to-next-to-leading order corrections to the effective weak mixing angle
        Speaker: Malgorzata Awramik (DESY Zeuthen; Cracow)
        transparencies
      • 213
        Automatized calculation of 2f production with aITALC
        Speaker: Tord Riemann (DESY Zeuthen)
      • 214
        The Running of the Electromagnetic Coupling Alpha in Small Angle Bhabha Scattering
        Speaker: Luca Trentadue (CERN)
        transparencies
      • 215
        Experimental Aspects of Precision Luminosity measurement
        Speaker: Leszek Suszycki (University of Science & Tech, Cracow)
        transparencies
    • Plenary colloqium Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 216
        Why does Cosmology needs results from a Linear Collider
        Speaker: Mark Trodden
        transparencies
  • Thursday 22 April
    • Higgs and EWSB Salle Stourdze

      Salle Stourdze

      Conveners: Rick Van Kooten, Howard Haber, Klaus Desch, Satoru Yamashita

      • 217
        Search for the MSSM Higgs bosons in the intense coupling regime at TESLA
        Speaker: Eduard Boos (SINP MSU)
        transparencies
      • 218
        Higgs decays into charginos and neutralinos including full one-loop corrections
        Speaker: Helmut Eberl (HEPHY Vienna)
        transparencies
      • 219
        NMSSM Higgs and Gaugino analysis
        Speaker: David J. Miller (University of Edinburgh)
        transparencies
      • 220
        Distinguishing non-minimal Higgs sectors via precise measurements of a light neutral Higgs boson.
        Speaker: Andrew Akeroyd (KEK)
        transparencies
    • Simulation (joint session with Loopverein) Salle A

      Salle A

      Conveners: M. Peskin, D. Ward, K. Fujii

      • 221
        Six-fermion (and more!) studies
        Speaker: Stefan Dittmaier (p.p. Stefano Moretti)
        transparencies
      • 222
        e+e- -> 6, 8 fermions with WHIZARD
        Speaker: Wolfgang Kilian (DESY)
        transparencies
      • 223
        Radiative Corrections to Higgs processes at LC with GRACE
        Speaker: Yoshiaki Yasui (Tokyo Management College)
        transparencies
      • 224
        Automization of loop calculations
        Speaker: Thomas Hahn (MPI Munich)
        transparencies
      • 225
        SUSY simulations for the LC with ISAJET
        Speaker: H. Baer (Florida SU)
        transparencies
      • 226
        Herwig++
        Speaker: Stefan Gieseke (Cambridge)
        transparencies
      • 227
        Efficient Constrained Markovian algorithm for ISR evolution of PDFs
        Speaker: Stanislaw Jadach (Krakow)
        transparencies
    • Test beams Salle B

      Salle B

      Conveners: J.Yu, Y.Fujii, G.Fisk, V.Vrba

      • 228
        Introduction
        Speaker: Dr vaclav vrba (Institute of Physics, Prague)
      • 229
        Facilities in Asia
        Speaker: Yasuhiro Sugimoto (KEK)
        more information
      • 230
        Fermilab Meson Test Beam Facility
        Speaker: Erik Ramberg (FNAL)
        more information
      • 231
        SLAC and other North American Facilities
        Speaker: Carsten Hast (SLAC)
        more information
      • 232
        TB Facilities at DESY, Serpukhov and Frascati
        Speaker: Volker Korbel (DESY)
        more information
      • 233
        CERN TB facilities
        Speaker: Michael Hauschild (CERN)
        more information
      • 10:00
        Coffee Break
      • 234
        IP&BI R&D
        Speaker: Mike Woods (SLAC)
        more information
      • 235
        Vertex R&D: CMOS Beam Tests
        Speaker: Damien Grandjean (IReS - Strasbourg)
        more information
        more information
      • 236
        Tracking R&D
        Speaker: Bruce Schumm
        more information
        more information
      • 237
        Calorimeter R&D
        Speaker: Felix Sefkow (DESY)
        more information
      • 238
        Muon R&D
        Speaker: M. Piccolo (INFN-LNF)
        more information
        more information
      • 239
        Discussion mediated by Erik Ramberg
        Speaker: Erik Ramberg (FNAL)
    • Tracking and vertexing: Simulation studies Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 240
        CCD output for full LC detector simulation
        I am working on the simulation of CCD output (signals from individual pixels), which should be included in the full detector simulation in the JAS. This can give the ideas about limits and optimization of the CCD based vertex detector in the spatial resolution, tracks separation, readout speed and so on. It also allows better understanding of the impact of vertex detector parameters on physics reach of LC detector. Details of the model of CCD operation and it's implementation in the software will be given. I will also present examples of results obtained with this code.
        Speaker: Nikolai Sinev
        transparencies
      • 241
        Strategies for pickup and noise suppression with different vertex detector technologies
        At the US LC workshop held at SLAC in January 2004, it became clear that the SLC experience with beam-related pickup could have important consequences for the vertex detector at the future LC. There are major differences for the warm and cold machine, and for different detector technologies. We review the current thinking in the light of these discussions, and consider pointers to architectures which would be tolerant of the levels of pickup likely to be encountered.
        Speaker: Chris Damerell
        transparencies
      • 242
        Pattern Recognition Studies for a Silicon Outer Tracker
        We have studied pattern recognition in a variant of the proposed SD detector where the outer 5 layers (r=20-125 cm) have axial-only strips. The purpose of these studies is to determine if this detector, combined with a fully 3D (CCD) inner tracker, is sufficient for the reconstruction of tracks in the dense core of jets. Using standard algorithms, track finding efficiencies are presented for various track pT as a function of the distance from the jet center, and failure modes are discussed. The change in response due to detector inefficiencies and event backgrounds (pair BG, other beam BGs, and BGs from overlapping 2-photon reactions) are also investigated, as is the gain from crude tiling in the longitudinal direction.
        Speaker: Steve Wagner
        transparencies
      • 243
        Design Study for a Detector with Continuous Tracking
        The concept of a large volume detector with continuous 3d tracking and granular calorimeters contained in a solenoidal magnetic field offers many desirable features for the linear collider. The design optimisation aims at reviewing its detailed design, assessing its physics performances for benchmark processes and identifing detector requirements to be supported by dedicated R&D activity. The activity ongoing within the American Linear Collider Physics Group is presented with some preliminary results and study perspectives discussed in detail.
        Speaker: M. Battaglia (LBL)
        transparencies
      • 244
        TPC Detector Response Simulation and Track Reconstruction
        Linear collider detector designs considered in the North American study include two technologies for the central tracking system: a TPC and an all-silicon tracker. These designs must be evaluated in terms of track reconstruction efficiency and resolution. Performance in these quantities determines the ability to successfully analyze complex events. In particular, superior tracking performance is required for energy flow analyses. This study concentrates on the track reconstruction efficiency of a TPC central tracking device. Current results in reconstruction efficiency as a function of TPC pad size will be presented.
        Speaker: Daniel Peterson
        transparencies
      • 245
        CCD Vertex Detector Charm-Tagging Performance in Studies of Heavy Scalar Quarks
        The influence of varying the vertex detector design on searches for scalar top quarks at the Linear Collider have been studied. The benchmark reaction depends on the c-quark tagging capabilities of the detector design. The influence of the material thickness of the detector layers, and the number of sensitive layers has been considered.
        Speaker: Andre Sopczak
        transparencies
    • calorimetry and muons Auditorium Poincare

      Auditorium Poincare

      Conveners: J-C. Brient , D.Chakraborty, K.Kawagoe, M.Piccolo

      • 246
        Si/W ECAL for SD
        Speaker: R. Frey (Oregon Univ.)
        transparencies
      • 247
        VFE for prototype, VFE for final detector
        Speaker: J. Fleury (LAL - Orsay)
        transparencies
      • 248
        Status of the CALICE ECAL
        Speaker: J-Ch. Vanel (LLR - Ecole polytechnique)
        transparencies
      • 249
        DAQ for CALICE ECAL and tile HCAL
        Speaker: Paul Dauncey (Imp. Coll. London)
        transparencies
      • 10:00
        Coffee break
    • Higgs and EWSB Auditorium Poincare

      Auditorium Poincare

      Conveners: Rick Van Kooten, Howard Haber, Klaus Desch, Satoru Yamashita

      • 250
        Neutral Higgs Boson Production and CP Violation at LC
        Speaker: Kang Young Lee (KAIST)
        transparencies
      • 251
        Search for the Lepton Flavor Violation in the Higgs Boson Decay at a Linear Collider
        Speaker: Toshihiko Ota (Osaka University)
        transparencies
      • 252
        The invisible Higgs decay in the ADD model at LHC and LC
        Speaker: Daniele Dominici (Universita di Firenze)
        transparencies
      • 253
        Future Directions for the Higgs Working Group--A General Discussion
        Speaker: Desch, K. (DESY)
    • New Physics at TeV scale and precision electroweak Salle Stourdze

      Salle Stourdze

      Conveners:G. Wilson, J. Hewett, K. Moenig, K. Ruckl, K. Hikasa, S. Raychaudhuri

      • 254
        Kaluza-Klein dark matter
        Speaker: Tim Tait (Fermilab)
        transparencies
      • 255
        Identifying Universal Extra Dimensions at CLIC
        Speaker: Albert DeRoeck (CERN)
        transparencies
      • 256
        Probing Minimal 5D Extensions of the SM
        Speaker: Reinhold Rueckl (Wurzburg)
        transparencies
      • 257
        Graviton-induced Bremsstrahlung at e^+e^- colliders
        Speaker: Per Osland (Bergen)
        transparencies
      • 258
        Higgs pair production in models with large extra
        Speaker: Nobuchika Okada (KEK)
    • SUSY studies Salle A

      Salle A

      Conveners: J.Feng, U.Nauenberg, R.Godbole, U.Martyn

      • 259
        Reconstructing sleptons in cascade decays at the LC
        Speaker: M. Berggren (LPNHE Paris VI & VII)
        transparencies
      • 260
        Sfermion production at a Linear Collider
        Speaker: K. Kovarik (HEPHY Vienna)
        transparencies
      • 261
        Precision Mass determination for stop quarks using charm tagging
        Speaker: A. Finch (Lancaster Univ)
        transparencies
      • 262
        Stop production in polarized photon-photon collisions
        Speaker: N. Skachkov (JINR)
        transparencies
      • 263
        NLO-MSSM corrections to squark pair production in photon-photon collisions
        Speaker: S. Berge (SMU)
      • 264
        Collider phenomenology of light strange-bottom squark
        Speaker: K. Cheung (Natl Tsing Hua Univ)
        transparencies
    • global detector geometry and design Auditorium Gay Lussac

      Auditorium Gay Lussac

      Conveners: T. Behnke

      Please note, that the times allocated are preliminary and will probably change.

      • 265
        Particle Flow and Detector Geometries
        Speaker: brient@poly.in2p3.fr
        transparencies
      • 266
        The small detector concept
        Speaker: A. White (Univ. Texas Arlington)
        transparencies
      • 267
        The large detector concept
        Speaker: P. Checchia (INFN- Padova)
        transparencies
      • 268
        Differences between the US large and the TESLA large detector
        Speaker: Mike Ronan (Berkeley)
        transparencies
      • 12:00
        LUNCH
    • Plenary discussions Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 269
        Chair: Sachio Komamiya - Questions and discussion on the accelerator technology option
        (following Monday's afternoon talks)
        Speaker: Panel:G. Dugan, A. Wagner
      • 270
        Short presentations on detector related warm/cold issues. Chair : J. Jaros - Energy Luminosity and polarization measurement
        Speaker: M. Woods
        transparencies
      • 271
        Timing and bunch structure
        Speaker: K. Desch
        transparencies
      • 272
        Forward Region Issues
        Speaker: T. Tauchi/ P. Bambade
        transparencies
      • 273
        Discussion
      • 274
        Chair: J. Brau - Draft response to ILCSC/ICFA request for a global experimental programme.
        Speaker: D. Miller
        transparencies
      • 275
        Discussion
      • 15:30
        collation
      • 276
        Chair: Rolf-Dieter Heuer - LC Outreach: to the public and to decision makers
        Speaker: P. Burrows
        transparencies
      • 277
        Draft answers to ITRP questions task force
        Speaker: JoAnne Hewett
        transparencies
      • 278
        Discussion
    • Colloquium Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 279
        Energy Flow and Particle Flow
        Speaker: Henri Videau
        transparencies
      • 19:30
        Social dinner at the Palais du Luxembourg (Senat)

        The social dinner will take place in the Palais which houses the French Upper House (Senat)

  • Friday 23 April
    • Plenary Session: summary talks Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 280
        Higgs and EWSB : Experiments
        Speaker: Timothy Barklow (SLAC)
        transparencies
      • 281
        Higgs and EWSB : Theory
        Speaker: Shinya Kanemura (Osaka University)
        transparencies
      • 282
        Susy Studies
        Speaker: G. Belanger (LAPP Annecy)
        transparencies
      • 283
        New Physics at TeV scale and precision Electroweak
        Speaker: Atul Gurtu (Tata Institute)
        transparencies
      • 284
        Top and QCD
        Speaker: Zenro Hioki (University of Tokushima)
        transparencies
      • 10:10
        coffee break
      • 285
        Gamma-Gamma e-gamma physics and technology
        Speaker: Mayda Velasco (Northwestern University)
        transparencies
      • 286
        Loop calculations
        Speaker: Sven Heinemeyer (CERN)
        transparencies
      • 287
        e- e-
        Speaker: K. Cheung (Natl Tsing Hua Univ)
        transparencies
      • 288
        Tracking and Vertexing
        Speaker: M. Battaglia (LBL)
        transparencies
      • 289
        Calorimetry and Muons
        Speaker: T. Takeshita (Shinshu Univ.)
        transparencies
      • 12:05
        LUNCH
    • Plenary Session: summary talks Auditorium Gay Lussac

      Auditorium Gay Lussac
      • 290
        Simulation
        Speaker: Ties Behnke (DESY)
        transparencies
      • 291
        Machine-Detector interface
        Speaker: Olivier Napoly (CEA/Saclay, DAPNIA/SACM)
        transparencies
      • 292
        Test Beams
        Speaker: Dr vaclav vrba (Institute of Physics, Prague)
        transparencies
      • 293
        accelerator Physics
        Speaker: George Gollin (University of Illinois)
        transparencies
      • 294
        Polarization
        Speaker: Achim Stahl (DESY Zeuthen)
        transparencies
      • 295
        Cosmology
        Speaker: H. Baer (Florida SU)
        transparencies
      • 15:00
        Collation
      • 296
        Summary Talk
        Speaker: Rolf Heuer (Hamburg University)
        transparencies
      • 16:00
        Conference closing
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