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Workshop on 𝛾𝛾 physics at electron-hadron colliders

28 February 2025
AGH University of Kraków
Europe/Warsaw timezone

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  1. 1. Workshop introduction
    Hamzeh Khanpour (AGH University of Science and Technology), Krzysztof Piotrzkowski (AGH University (Kraków, PL)), Laurent Forthomme (AGH University of Krakow (PL))
    28/02/2025, 09:20
  2. 3. Exploring High Energy Photon-Photon Interactions at the LHeC
    Hamzeh Khanpour (AGH University of Science and Technology)
    28/02/2025, 09:30

    The future Large Hadron-Electron Collider (LHeC) provides a unique platform to explore high-energy photon-photon ($\gamma \gamma$) interactions in electron-proton collisions. This talk focuses on the exclusive production of lepton pairs and the potential to probe supersymmetric particles, such as higgsinos, through photon-induced processes. Utilizing the Equivalent Photon Approximation (EPA),...

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  3. 7. Production of exclusive dijets at electron-proton colliders
    Antoni Szczurek
    28/02/2025, 09:50
  4. 5. Photon transition form factors of C-even quarkonia for virtual photons
    Wolfgang Schaefer
    28/02/2025, 10:10
  5. 4. Virtual Compton scattering processes in upcoming experiments
    Paweł Sznajder (National Centre for Nuclear Research)
    28/02/2025, 11:00

    In my talk, I will describe recent progress in the study of a family of virtual Compton scattering (VCS) processes within the framework of generalized parton distributions (GPDs). This includes deeply virtual Compton scattering (DVCS), timelike Compton scattering (TCS), and double deeply virtual Compton scattering (DDVCS). I will also focus on the measurability of these processes in upcoming...

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  6. 8. 𝛾𝛾 → µ+µ-, 𝜏+𝜏- at EIC
    Krzysztof Piotrzkowski (AGH University (Kraków, PL))
    28/02/2025, 11:20

    The two-photon exclusive production of lepton pairs at the Electron–Ion Collider will open interesting research directions thanks to a very high luminosity and clean experimental conditions. A survey of the scientific potential of such studies is reported. In particular, we consider unique measurements of the proton elastic electromagnetic form-factors and a possibility of studying the...

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  7. 2. Two-photon physics with the CepGen event generator and 𝛾𝛾 → W+W-/ZZ at LHC and LHeC
    Laurent Forthomme (AGH University of Krakow (PL))
    28/02/2025, 11:40

    CepGen is a matrix element level Monte Carlo generator intended for the simulation of central exclusive processes (and in particular $\gamma\gamma$) at LHC. In the recent years, numerous extensions allowed it to simulate an even broader range, e.g. diffraction and UPC interactions.
    In this talk, the generator will be presented along its modular extensions capability, allowing e.g. the...

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  8. 9. Topical discussion
    28/02/2025, 13:00
    • Precise simulation of Bethe-Heitler two-photon production of lepton pairs at polarised EIC
    • Tau-tau production & decay at EIC
    • Nuclear effects in gamma-gamma to lepton pairs at eA@EIC
    • Tau-tau final state analysis at LHeC
    • Two-photon production of W, or Z pairs at LHeC (incl. 2-to-6 simulation)
    • Photoproduction of t-tbar at LHeC
    • Event generators developments
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  9. 6. TBA
    Marta Luszczak