ALCPG11 - Linear Collider Workshop of the Americas

ABSTRACTS

Number of abstracts: 6

Calorimeters

First test beam experience with the CALICE tungsten A-HCAL prototype

• Speaker: Dominik Dannheim (CERN) on behalf of the CALICE collaboration

• Status: submitted to CALICE

• Abstract:
  The CALICE collaboration carries out a research and development program of calorimeter systems for a future high-energy electron-positron collider experiment. A prototype for a highly segmented hadronic sampling calorimeter using tungsten as absorber material, and scintillator tiles (read out by silicon photomultipliers) as active material, has been exposed to a mixed beam of pions, protons and electrons with energies from 2 to 10 GeV at the CERN PS. We describe the experimental setup and recorded data sets and present preliminary results of particle-identification, calibration and data-quality studies.

Interaction Region Background and Forward Detectors

Update on CLIC detector forward region studies

• Speaker: Konrad Elsener (CERN)

• Status: submitted 2-Mar-2011

• Abstract:
  The evolution since IWLC2010 of the CLIC detector concepts in the forward region is summarized. A number of layout and engineering issues are discussed. Consequences of the recent changes for the backgrounds in a CLIC detector are described.

Simulation and Reconstruction

Beam-induced backgrounds in the CLIC detector models

• Authors: Dominik Dannheim (CERN), Andre Sailer (CERN and Humboldt-Universität zu Berlin)

• Speaker: Dominik Dannheim (CERN)

• Status: submitted 2-Mar-2011

• Abstract:
  The beam parameters of the proposed CLIC concept for a linear electron-positron collider with a centre-of-mass energy of up to 3 TeV will lead to high rates of beam-induced background events in the tracking and forward regions of the detectors. Simulation studies of incoherent electron-positron pairs and gamma gamma --> hadrons events are presented. The simulation methods and the CLIC_ILD_CDR and CLIC_SiD_CDR detector models are introduced. The characteristics of the events are described and resulting occupancies as well as expected levels of both total ionizing dose and displacement damage in the detectors are discussed.

CLIC Benchmark Analysis of Mass and Cross Section for Chargino and Neutralino Production

• Speaker: Tim Barklow (SLAC)

• Status: submitted 7-Mar-2011

• Abstract:
  The status of the chargino and neutralino benchmark analysis for the CLIC CDR is reviewed. Generator level and fast Monte Carlo results are presented for the production cross sections and for the masses of the chargino and the lightest and next-to-lightest neutralinos. Preparations for analysis with full simulation are also discussed.

Higgs/SUSY/BSM/Dark Matter

Light-flavored Squark Production at CLIC

• Speaker: Frank Simon (MPI Munich)

• Status: submitted 2-Mar-2011

• Abstract:
  A multi-TeV linear e+e- collider is an ideal tool for precise studies of the masses of squarks. In scenarios where the gluino is heavier than the squarks, light-flavored right-squarks will decay almost exclusively into the corresponding quark and the lightest neutralino, leading to simple event topologies which offer excellent possibilities for clean mass measurements. We discuss different techniques for the squark mass measurement and the performance of different jet finder in the presence of hadronic background from two-photon processes.

The CLIC benchmarking process and a status report of h -> mu mu

• Speaker: Jan Strube (Rutherford Appleton Laboratory)

• Status: submitted 2-Mar-2011

• Abstract:
  The CLIC benchmark channels were selected to give comprehensive coverage of the detector performance at different energies. The process of generating the signal and background channels presents a test of the reconstruction software and production system. We present improvements to the simulations tools that allow us to carry out these studies. The second part of this talk will be a status report of the analysis of a light higgs decaying to a pair of muons.

-- Main.MichaelHauschild - 17-Feb-2011