CLIC Detector and Physics Collaboration Meeting

Name: CLIC Detector and Physics Collaboration Meeting
Start: 2017-08-29T08:00:00+02:00
End: 2017-08-30T18:00:00+02:00
Location: CERN

29 Aug 2017, 08:00 → 30 Aug 2017, 18:00 Europe/Zurich

503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162

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Description

The 2-day meeting on the CLIC detector and physics study will start on Tuesday 29 August 08:30 and will end on Wednesday 30 August around 17:30. Most of the time will be devoted to topical sessions, providing an overview of ongoing activities and future plans. In order to allow the participants to get a good overview of the work in CLICdp, we try to avoid parallel sessions. The timetable presently proposed is tentative - sessions can be shortened/extended at a later stage, according to the proposed number of talks.

We foresee to have the following topical sessions (and conveners):

Physics and Analysis (Esteban Fullana, Juergen Reuter, Rickard Strom)
Software / Detector Validation (Matthias Weber, Andre Sailer)
Vertex / Tracker R&D (Mathieu Benoit, Andreas Nurnberg, Simon Spannagel)
FCAL / ECAL / HCAL R&D (Aharon Levy, Frank Simon)

A CLICdp Institute Board meeting is scheduled for Tuesday lunchtime, 29 August.

The workshop dinner is scheduled for Tuesday evening, 29 August, 19h30 at La Maison d'Asie in Geneva (cost: 50 CHF all included).

Support

antonella.vignes-magno@cern.ch

Participants

61 View full list

Tuesday 29 August
- Tue 29 Aug
- Wed 30 Aug
- Registration 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- CLICdp Plenary: Welcome 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 1
    
    Welcome and General News
    
    Speaker: Lucie Linssen (CERN)
    
    Linssen_CLICdp_News-August2017.pdf
    
    Linssen_CLICdp_News-August2017.pptx
  - 2
    
    Report from the CLIC Communication Initiative (CCI)
    
    Speaker: Lars Rickard Strom (CERN)
    
    CCI_CLICdp_coll_meeting_2017_stroem.pdf
  - 3
    
    Update on CLIC BDS tuning and luminosity performance
    
    Speaker: Fabien Plassard (Universite de Paris-Sud 11 (FR))
    
    clicdp-WS_BDS-optim-update.pdf
  - 4
    
    Beam-induced backgrounds at 380 GeV CLIC
    
    Speaker: Dominik Arominski (Warsaw University of Technology (PL))
    
    Beam-induced backgrounds at CLIC.pdf
  - 5
    
    Cooling of ECAL and HCAL
    
    Speaker: Katja Krueger (Deutsches Elektronen-Synchrotron (DE))
    
    Cooling_CLICdp_20170829.pdf
- 10:00
  
  Coffee Break 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- Registration 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- Physics/Analysis 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Esteban Fullana Torregrosa (Univ. of Valencia and CSIC (ES)), Jürgen Reuter (DESY Hamburg, Germany), Lars Rickard Strom (CERN)
  - 6
    
    Limits on top FCNC decay t->cH from CLIC at 380 GeV
    
    Prospects for measuring top FCNC decays at 380 GeV were studied with the full simulation samples including signal sample generated with the WHIZARD implementation of the 2HDM(III) model and the standard six-fermion event samples used for top pair production studies. Analysis was divided into three steps: event classification, kinematic reconstruction based on signal or background hypothesis and final signal vs background discrimination. To obtain optimal results, selection criteria based on the dedicated Boosted Decision Tree (BDT) responce were used at each step. Expected limits on BR(t->cH)*BR(H->bb) are presented.
    
    15 minutes presentation + 5 minutes discussion
    
    Speaker: Aleksander Filip Zarnecki (University of Warsaw)
    
    zarnecki_clicdp2017.pdf
  - 7
    
    Update on FCNC t->c gamma at 380 GeV
    
    In the Standard Model, FCNC top decays, are very strongly suppressed. Observing such a decay would be a direct signature of physics beyond the SM as large enhancements are possible in many "new physics" scenarios. A full simulation study for CLIC at 380 GeV based on a WHIZARD simulation of FCNC top decay t -> c gamma within the 2HDM(III) model is performed. An update on this analysis including background suppression of standard top decay channels (cut based and TMVA) is presented, including a first estimate of the discovery limit.
    
    15 minutes presentation + 5 minutes discussion
    
    Speaker: Naomi Van Der Kolk (Max-Planck-Institut fur Physik (DE))
    
    FCNC_20170829.pdf
  - 8
    
    Status of ee -> gamma gamma analysis
    
    The CLIC sensitivity to the QED process ee->gamma gamma
    at 3 TeV is studied using SiD geometry model.
    The estimated precision on total and differential
    cross-sections is converted into the exclusion limits
    on various New Physics models, including finite electron size,
    extra dimensions, contact interactions, excited electrons.
    
    Speaker: Igor Boyko (Joint Institute for Nuclear Research (RU))
    
    boyko_eegg_20170829.pdf
  - 9
    
    BSM Hidden valley searches
    
    Sensitivity studies of the BSM Hidden Valley particles have been performed for the e+e- collisions at the centre-of-mass energy of 3 TeV in the CLIC detector,
    corresponding to an integrated luminosity of 2 ab-1. Hidden Valley particles may be stable, providing dark matter candidates and missing energy signals,
    but others may decay into neutral combinations of Standard Model particles. Since the Higgs boson may also decay into two Hidden Valley particles, providing
    four b-jets in the final state which are away from the primary vertex and the beam axis, analysis relies on loosely reconstructed displaced vertices assigned to the b-jets.
    The final aim of the present analysis is to determine the upper limits of the cross sections for the Hidden Valley particle production for different masses and lifetimes.
    
    Speaker: Marcin Kucharczyk (Polish Academy of Sciences (PL))
    
    HiddenValley_MKucharczyk_2017.08.29.pdf
  - 10
    
    The Higgs couplings and self-coupling in the EFT framework
    
    We study the reach on the Higgs coupling constraints at future lepton colliders in a global effective-field-theory framework. The impact and complementarity of different measurements, at different center-of-mass energies and for several beam polarization configurations, are discussed in detail. This framework is also applied to study the constraints on the Higgs self-coupling. Based on arXiv:1704.02333 and current study.
    
    12 minutes presentation + 3 minutes discussion
    
    Speaker: Jiayin Gu (DESY)
    
    eex6.pdf
- 12:00
  
  Lunch 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- CLICdp Institute Board 1/1-025
  
  1/1-025
  
  CERN
  
  20
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  https://indico.cern.ch/event/656038/
  
  CLICdp Institute Board
- FCAL/ECAL/HCAL R&D 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Aharon Levy (Tel Aviv University (IL)), Frank Simon (Max-Planck-Institut fuer Physik)
  - 11
    
    FoCal: MAPS digital calorimetry
    
    Speaker: Naomi Van Der Kolk (Max-Planck-Institut fur Physik (DE))
    
    FoCal_20170829.pdf
  - 12
    
    The CALICE AHCAL: Progress with the Technical Prototype
    
    Speaker: Felix Sefkow (Deutsches Elektronen-Synchrotron (DE))
    
    HCAL-CLIC-Aug17.pdf
    
    wrapping_58sek_manual.mp4
  - 13
    
    The CMS HGCAL Testbeams
    
    Speaker: Thorben Quast (Rheinisch-Westfaelische Tech. Hoch. (DE))
    
    HGCALTestbeams_Quast_08_29.pdf
  - 14
    
    Beam test of a compact LumiCal prototype
    
    Speaker: Maryna Borysova (National Academy of Sciences of Ukraine (UA))
    
    CLICDP_mb.pdf
  - 15
    
    LumiCal performance in combination with a tracking detector
    
    Speaker: Oleksandr Borysov (Tel Aviv University (IL))
    
    lumical_tracking_clicdp2017.pdf
  - 16
    
    New developments of the BeamCal
    
    Speaker: Oleksandr Borysov (Tel Aviv University (IL))
    
    beamcal_clicdp2017.pdf
- 16:00
  
  Workshop Photo and Coffee break 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- Physics/Analysis 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Esteban Fullana Torregrosa (Univ. of Valencia and CSIC (ES)), Jürgen Reuter (DESY Hamburg, Germany), Lars Rickard Strom (CERN)
  - 17
    
    Top Yukawa coupling measurement at 1.4 TeV at CLIC
    
    The precision on the top Yuakwa coupling is measured in the e+e -->t ̄tH process at sqrt(s) = 1.4 TeV using Compact Linear Collider (CLIC). The analysis focuses on the 6 jets and 8 jets final states channels using particle flow technique. Leptons are identified first follow by clustering the remaining particles into jets and removing the beam jets. Particles that are not identified as leptons are reclustered into jets and performed flavour-tagging. Optimal selection are investigated to select leptons and to suppress the beam-induced backgrounds. Collection of variables are used as input to the BDT to select signals. The precision of the top Yukawa coupling in the semi-leptonic channel is determined to be 5.92% with no beam polarisation.
    
    12 minutes presentation + 3 minutes discussion
    
    Speaker: Mr Yixuan Zhang (University of Edinburgh (GB))
    
    clic_ppt.pdf
  - 18
    
    WW/ZZ separation and timing cut comparison for old and new CLIC detector model
    
    15 minutes presentation + 5 minutes discussion
    
    Speakers: Sascha Simon Dreyer, Lars Rickard Strom (CERN), Matthias Artur Weber (CERN)
    
    sdreyer_wwzz.pdf
  - 19
    
    Top forward-backward asymmetry with boosted reconstruction methods at multi-TeV CLIC
    
    In this contribution we outline the path towards studying top quark properties at the multi-TeV collisions of the CLIC physics programme. We discuss the jet reconstruction performance utilising a fat-jet approach and subsequent methods to identify the underlying top sub-structure in boosted topologies. We present results on the cross-section and forward-backward asymmetry as well as an interpretation of the results from the full CLIC programme in terms of EFT operators.
    
    15 minutes presentation + 5 minutes discussion
    
    Speaker: Lars Rickard Strom (CERN)
    
    boosted_top_clicdp_coll_meeting_2017_stroem.pdf
  - 20
    
    The top-antitop threshold in WHIZARD
    
    In this talk I will report on recent progress in the implementation of threshold resummation into the Monte Carlo event generator WHIZARD. This is crucial for reliable predictions of WWbb production close to the top-antitop threshold. As a key feature we establish a smooth transition between the threshold region and the relativistic (NLO) continuum. For the first time our code allows to study arbitrary differential observables involving the decay products of the tops and including interference with non-resonant background processes at threshold and beyond.
    
    15 minutes presentation + 5 minutes discussion
    
    Speaker: Maximilian Stahlhofen
    
    CLICdp_29Aug2017_v3.pdf
  - 21
    
    A Top Threshold Scan with with Luminosity Spectrum of the 380 GeV Machine
    
    I will present an update of the study of the top mass measurement and other top properties in a threshold scan, now using the luminosity spectrum of the new CLIC baseline machine. The optimisation of the machine for 380 GeV instead of 500 GeV leads to increased beamstrahlung when operated in the top threshold region, which may result in a degradation of the sensitivity of a threshold scan. The impact of this change will be discussed in the presentation.
    
    12 minutes presentation + 3 minutes discussion
    
    Speaker: Frank Simon (Max-Planck-Institut fuer Physik)
    
    TopThresholdNewSpectrum.pdf
- Workshop dinner at "La Maison d"Asie": Workshop dinner
  - 22
    
    Workshop Dinner: how to get to the restaurant - by tram
    
    workshop dinner.pdf
    
    workshop dinner.pptx
Wednesday 30 August
- Tue 29 Aug
- Wed 30 Aug
- Vertex / Tracker R&D 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 23
    
    The Allpix2 Simulation Framework
    
    Speaker: Koen Wolters (Eindhoven Technical University (NL))
    
    linear_propagation.gif
    
    tcad_propagation.gif
    
    Wolters_Allpix_30_08_2017.pdf
    
    Wolters_Allpix_30_08_2017.ppt
  - 24
    
    SOI test beam and irradiation studies
    
    Speakers: Roma Bugiel (AGH University of Science and Technology (PL)), Szymon Bugiel (AGH University of Science and Technology (PL))
    
    2017_CLIC_CollaborationMeeting.pdf
  - 25
    
    Analysis & Simulations of the Investigator Chip
    
    Speaker: Ruth Magdalena Munker (University of Bonn (DE))
    
    clicws_08_2017_munker.pdf
  - 26
    
    Simulations and Glue Studies for Capacitively Coupled Sensors
    
    Speaker: Mateus Vicente Barreto Pinto (Universite de Geneve (CH))
    
    ccpd_mvicente.pdf
- 10:00
  
  Coffee Break 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- Software / Detector Validation 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Andre Sailer (CERN), Matthias Artur Weber (CERN)
  - 27
    
    iLCDirac Status
    
    Speaker: Marko Petric (CERN)
    
    iLCDirac_Status_petric.pdf
  - 28
    
    Software Status
    
    Speaker: Andre Sailer (CERN)
    
    170830_sailer_softcomp.pdf
- Vertex / Tracker R&D 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Andreas Nürnberg (CERN), Mathieu Benoit (UNIGE), Simon Spannagel (CERN)
  - 29
    
    Analysis & Simulations of CLICpix+CCPDv3 Assemblies
    
    Speaker: Matthew Daniel Buckland (University of Liverpool (GB))
    
    MBuckland_30-08-2017.pdf
  - 30
    
    Characterization of Capacitively Coupled HR/HV-CMOS Sensor Chips
    
    Speaker: Iraklis Kremastiotis (KIT - Karlsruhe Institute of Technology (DE))
    
    C3PD_Measurements_20170830.pdf
  - 31
    
    Status of the CaRIBOu DAQ System
    
    Speaker: Adrian Fiergolski (CERN)
    
    A.Fiergolski_CaRIBOu.pdf
  - 32
    
    Lab & Test Beam Charactierization of the CLICpix2 Chip
    
    Speakers: Andreas Nürnberg (CERN), Simon Spannagel (CERN)
    
    20170830_clicdp_meeting.pdf
- 13:00
  
  Lunch 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- Software / Detector Validation 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 33
    
    Tracking Validation
    
    Speakers: Daniel Hynds (CERN), Emilia Leogrande (CERN)
    
    CLIC_CollaborationMeeting_30Aug2017.pdf
  - 34
    
    Impact Parameter Resolution
    
    Speaker: Peter Winkel Rasmussen (Summer Student)
    
    Presentation.pdf
  - 35
    
    Flavour Tagging
    
    Speaker: Mr Ignacio Garcia Garcia (Univ. of Valencia and CSIC (ES))
    
    Nacho_clicdp_collaboration_meeting_17.pdf
  - 36
    
    Calorimeters and Pandora Performance
    
    Speaker: Matthias Artur Weber (CERN)
    
    170830_Weber_CLIC_PFlow_Validation.pdf
- 15:30
  
  Coffee Break 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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- CLICdp Plenary 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 37
    
    Report from the CLIC physics potential WG
    
    Speaker: Jorge de Blas (Universita e INFN, Padova (IT))
    
    Phys_Pot_WG_Report.pdf
  - 38
    
    Analysis overview
    
    Speaker: Philipp Roloff (CERN)
    
    clicdp_collaboration_meeting_august_2017_roloff.pdf
  - 39
    
    Report from the Speakers Committee
    
    Speaker: Igor Boyko (Joint Institute for Nuclear Research (RU))
    
    SC_2017aug.pdf
  - 40
    
    Report from the Publication Committee
    
    Speakers: Aleksander Filip Zarnecki (University of Warsaw), TBC
    
    clicdp2017_pubcom.pdf
  - 41
    
    Report from the Institute Board meeting
    
    Speakers: Aidan Robson (University of Glasgow (GB)), Victoria Jane Martin (University of Edinburgh (GB))
    
    clicdp_IBreport170830.pdf

CLIC Detector and Physics Collaboration Meeting

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