Topological Effects in the Standard Model: Instantons, Sphalerons and Beyond at LHC

Europe/Zurich
Zoom Only (CERN)

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CERN

Chiara Caprini (APC Paris), Matthew Philip Mccullough (CERN), Matthias Schott (CERN / University of Mainz), Tancredi Carli (CERN)
Description

This workshop will explore possibilities to probe rare topological effects within the Standard Model, such as QCD instantons or Electroweak Sphaleron signatures at the LHC. While signatures of QCD instanton processes have been sought already at the HERA collider and significant theoretical work was done in the 1990s, electroweak sphalerons received recently some more attention, also in the view of possible future high energy colliders. The work-shop will also cover the experimental challenges in searches for instantons and sphalerons as well as the discovery potential at the LHC. 

It will be an entirely virtual workshop over three afternoons to review the current theoretical status and also the potential pitfalls in the underlying theoretical calculations. The workshop will be discussion-oriented with only two talks and one discussion session per day. 

Conference Picture: Taken from https://arxiv.org/abs/2003.02070 (Thanks to Yu Hamada)

Organizers: Chiara Caprini (APC-Paris), Tancredi Carli (CERN), Matthias Schott (Gutenberg University Mainz), Matthew McCullough (CERN).

Application deadline : December 11, 2020 h23:59

 

TH workshop secretariat
Participants
    • 1
      Theory Colloquium: Instantons and sphalerons of electroweak theory and QCD

      Connection Details and the actual talk can be found on the Theory Colloquium Page.

      Speaker: Edward Shuryak
    • 2
      Introduction and Goals of the Workshop
      Speaker: Matthias Schott (CERN / University of Mainz)
    • 15:10
      Virtual Workshop Photo - Part I
    • QCD Instantons: Overview Talks
      Convener: Tancredi Carli (CERN)
      • 3
        Calculations of QCD Instanton Processes at Hera (30+10)
        Speaker: Andreas Ringwald (Deutsches Elektronen-Synchrotron DESY)
      • 4
        New Calculations of QCD Instanton Processes at LHC (30+15)
        Speaker: Valentin V Khoze (Durham University)
    • 16:35
      Virtual Coffee Break
    • QCD Instantons: Round Table Discussion
      Conveners: Michelangelo Mangano (CERN), S. Moch (UHH)
      • 5
        Introduction to the discussion
      • 6
        Submitted Discussion Material
        Speakers: Michelangelo Mangano (CERN), S. Moch (UHH)
        • a) Remarks on the systematics for QCD instanton cross sections at LHC
          Speaker: Michelangelo Mangano (CERN)
        • b) An Inherent Uncertainty of the Instanton Cross Section Calculation for DIS
          Speaker: Fridger Schrempp (DESY)
        • c) Main sources of theoretical systematics
          Speaker: Valentin V Khoze (Durham University)
    • EW Sphalerons: Overview Talks
      Convener: Matthew Philip Mccullough (CERN)
    • 16:10
      Virtual Coffee Break
    • EW Sphalerons: Overview Talks
      • 9
        Gravitational Waves (25+5)
        Speaker: Pedro Klaus Schwaller (Mainz University)
    • EW Sphalerons: Round Table Discussion
      Conveners: Felix Yu (Johannes Gutenberg University Mainz), Germano Nardini (University of Stavanger)
      • 10
        Introduction to the discussion
      • 11
        Submitted Discussion Material
        Speakers: Felix Yu (Johannes Gutenberg University Mainz), Germano Nardini (University of Stavanger)
    • Collider Signatures: Overview Talks
      Convener: Matthias Schott (CERN / University of Mainz)
      • 12
        Simulation and phenomenlogy of Instanton- and sphaleron-induced processes (20+5))
        Speakers: Simon Plaetzer (ITP, Universitaet Karlsruhe), Simon Platzer (University of Vienna (AT))
      • 13
        Searches for QCD Instantons at Hera and EW Sphalerons limits at LHC (20+5)
        Speaker: Achim Geiser (Deutsches Elektronen-Synchrotron (DE))
      • 14
        Signatures of QCD and Electroweak Instantons at LHC (20+5)
        Speaker: Simone Amoroso (Deutsches Elektronen-Synchrotron (DE))
    • Collider Signatures: Round Table Discussion
      Conveners: Andreas Papaefstathiou (The University of Edinburgh (GB)), Stefan Gieseke (Karlsruhe Institute of Technology)
      • 15
        Introduction to the discussion
        Speakers: Andreas Papaefstathiou (The University of Edinburgh (GB)), Stefan Gieseke (Karlsruhe Institute of Technology)
      • 16
        Submitted Discussion Material
        Speakers: Andreas Papaefstathiou (The University of Edinburgh (GB)), Stefan Gieseke (Karlsruhe Institute of Technology)
    • 17:00
      Virtual Workshop Photo - Part II
    • 17:05
      Virtual Coffee Break
    • General Discussion
      Conveners: Edward Shuryak, Jonathan R. Ellis (University of London (GB))
      • 17
        Introduction to the discussion