Workshop on high-precision alpha_s measurements: from LHC to FCC-ee

Name: Workshop on high-precision alpha_s measurements: from LHC to FCC-ee
Start: 2015-10-12T08:00:00+02:00
End: 2015-10-13T19:25:00+02:00
Location: CERN

Oct 12, 2015, 8:00 AM → Oct 13, 2015, 7:25 PM Europe/Zurich

4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

110

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David d'Enterria (CERN), Peter Skands (Monash University (AU))

Description

The workshop is part of the FCC-ee "QCD & gamma-gamma physics" working group activities (aiming at a Yellow Report in 2016), and aims at addressing the following issues:

What is the current state-of-the-art of all alpha_s determination methods from the theoretical & experimental point of view ?
What is the current size of the theoretical uncertainties: missing higher orders, electroweak corrections, power corrections, hadronization corrections,... ?
What is the expected alpha_s uncertainty in ~10 years from now: theoretical developments, plus O(1 ab^-1) p-p at 14 TeV at the LHC ?
What are the expected improvements brought about by the FCC-ee: 10¹² Z's at sqrt(s)=m_Z; 10⁸ W's at sqrt(s)=m_WW; similar orders-of-magnitude for tau, jets,...? What are the systematic errors that the FCC-ee detectors should target in order to match the expected statistical precision, or where that is not possible, what are the important theoretical targets that should be met or exceeded?

Participants

43 View full list

Mon, October 12
- Mon, Oct 12
- Tue, Oct 13
- 1
  
  Presentation / Goals of the workshop
  
  Speakers: David d'Enterria (CERN), Peter Skands (Monash University (AU))
  
  dde_alphas_workshop_intro_cern_oct15.pdf
- 2
  
  World Summary of alpha_s (2015)
  
  Speaker: Siegfried Bethke (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
  
  alphas-CERN2015.pdf
- 3
  
  alpha_s and physics beyond the Standard Model
  
  Speaker: francesco Sannino (CP3-Origins)
  
  Sannino-alpha_s-CERN-2015.pdf
- 4
  
  Impact of alpha_s on Higgs prod. & decay uncertainties
  
  Speaker: Luminita Mihaila
  
  mihaila_fcee15.pdf
- 3:40 PM
  
  Coffee break
- alpha_s at low scales
  - 5
    
    alpha_s from lattice QCD
    
    Speaker: paul mackenzie (Fermilab)
    
    15CERNalphas.pdf
  - 6
    
    Determination of αs from the QCD static energy
    
    Speaker: Xavier Garcia Tormo
    
    xavier_alphas_CERN_FCC.pdf
  - 7
    
    alpha_s from pion decay factor
    
    Speaker: Jean-Loic Kneur (Univ. Montpellier 2)
    
    kneur_alphas.pdf
  - 8
    
    alpha_s from hadronic tau decays
    
    Speakers: Antonio Pich (University of Valencia), Antonio Pich (Unknown)
    
    alphas-tau_CERN-2015.pdf
  - 9
    
    alpha_s from hadronic quarkonia decays
    
    Speaker: Soto i Riera Joan (UB)
    
    joan_0cern15.pdf
  - 10
    
    alpha_s from soft parton-to-hadron FFs
    
    Speakers: David d'Enterria (CERN), Redamy Perez-Ramos
    
    dde_alphas_FFs_nnlo_cern_oct15.pdf
Tue, October 13
- Mon, Oct 12
- Tue, Oct 13
- alpha_s at high scales
  - 11
    
    alpha_s from DIS (PDFs) :
    
    Speaker: Johannes Bluemlein (DESY)
    
    JB_dis_alpha.pdf
  - 12
    
    alpha_s from DIS (jets, photoproduction)
    
    Speaker: Michael Klasen
    
    klasen.pdf
  - 13
    
    alpha_s from scaling violations of hard parton-to-hadron FFs
    
    Speaker: Prof. Bernd Kniehl (II. Institut für Theoretische Physik Universität Hamburg)
    
    kniehl.pdf
  - 14
    
    alpha_s from e+e- event shapes
    
    Speaker: Stefan Kluth (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
    
    fcceewstalk.pdf
  - 11:10 AM
    
    Coffee break
  - 15
    
    alpha_s from e+e- C-parameter event shape
    
    Speaker: Andre Hoang (U)
    
    C_param_Hoang.pdf
  - 16
    
    alpha_s from e+e- jet cross sections
    
    Speaker: Andrea Banfi (University of Sussex)
    
    banfi_fccee_15.pdf
  - 17
    
    alpha_s from hadronic Z decays and from the full electroweak fit
    
    Speaker: Klaus Monig (Deutsches Elektronen-Synchrotron (DE))
    
    moenig_alphas_globalfit.pdf
  - 18
    
    alpha_s from sigma(e+e--->hadrons)
    
    Speaker: Johann Kuehn (KIT, Karlsruhe, Germany)
    
    Kuehn_CERN_Oct_2015.pdf
  - 19
    
    alpha_s from hadronic W decays
    
    Speakers: David d'Enterria (CERN), Matej Srebre (CERN)
    
    w_alphas_v11.pdf
    
    w_alphas_v12.pdf
    
    w_alphas_v14.pdf
- 1:30 PM
  
  Lunch break
- alpha_s at hadron colliders
  - 20
    
    alpha_s from sigma(ttbar) at the LHC
    
    Speaker: Alexander Dimitrov Mitov (University of Cambridge (GB))
    
    AlexanderMitov-alpha_s-2015.pdf
  - 21
    
    alpha_s from sigma(ttbar): latest developments
    
    Speaker: Gavin Salam (CERN)
    
    ttbar-alphas.pdf
  - 22
    
    Future prospects of alpha_s from jets at the LHC at NNLO
    
    Speaker: Joao Pires (Milano Bicocca)
    
    pires.pdf
  - 4:25 PM
    
    Coffee break
  - 23
    
    alpha_s determinations from ATLAS (status & plans)
    
    Speaker: Bogdan Malaescu (Centre National de la Recherche Scientifique (FR))
    
    alphas_ATLAS_Malaescu.pdf
  - 24
    
    alpha_s determinations from CMS (status & plans)
    
    Speaker: Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE))
    
    alpha-s-at-CMS_FCC-ee_KRabbertz.pdf
- 25
  
  Conclusions (FCC-ee Yellow Report preparation)
  
  dde_alphas_workshop_conclusion_cern_oct15.pdf
  
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Workshop on high-precision alpha_s measurements: from LHC to FCC-ee

4/3-006 - TH Conference Room

CERN