Talks

Year:

• Niccolò Laurenti.The inclusion of QED corrections in the NNPDF4.0 fitting framework. ICHEP 2024, Prague, Czech Republic, 2024 Talk
  [ Indico, Slides, Abstract ]
  The need of percent precision in high energy physics requires the inclusion of QED effects in theoretical predictions, for example like the contributions coming from photon initiated processes. It is trivial then, to correctly determine the photon content of the proton. In this work, we extend the NNPDF4.0 NNLO determination of parton distribution functions (PDFs) with a photon PDF, determined within the LuxQED formalism, which evolves with the gluon and quark PDFs via DGLAP equations that contain NLO QED corrections. We study the impact of the QED effects to the NNPDF4.0 methodology, we compare our results with NNPDF3.1QED and other recent QED PDF fits and we asses the impact of the photon PDF for photon-initiated processes for LHC processes.

  @misc{ICHEP2024,
    author = {Niccolò Laurenti},
    title = { {The inclusion of QED corrections in the NNPDF4.0 fitting framework} },
    series = {ICHEP 2024, Prague, Czech Republic},
    year = {2024}
  }

• Niccolò Laurenti.The inclusion of QED corrections in the NNPDF4.0 fitting framework. IRN Terascale @ LNF, National Laboratory of Frascati, Italy, 2024 Talk
  [ Indico, Slides, Abstract ]
  The need of percent precision in high energy physics requires the inclusion of QED effects in theoretical predictions, for example like the contributions coming from photon initiated processes. It is trivial then, to correctly determine the photon content of the proton. In this work, we extend the NNPDF4.0 NNLO determination of parton distribution functions (PDFs) with a photon PDF, determined within the LuxQED formalism, which evolves with the gluon and quark PDFs via DGLAP equations that contain NLO QED corrections. We study the impact of the QED effects to the NNPDF4.0 methodology, we compare our results with NNPDF3.1QED and other recent QED PDF fits and we asses the impact of the photon PDF for photon-initiated processes for LHC processes.

  @misc{TerascaleLNF,
    author = {Niccolò Laurenti},
    title = { {The inclusion of QED corrections in the NNPDF4.0 fitting framework} },
    series = {IRN Terascale @ LNF, National Laboratory of Frascati, Italy},
    year = {2024}
  }

• Niccolò Laurenti.Evidence of intrinsic charm quark in the proton. MENU23, Mainz, Germany, 2023 Talk
  [ Indico, Slides, Abstract ]
  Quantum Chromodynamics describes the proton as a bound state of quarks and gluons. However, it is un- clear whether the heavy quarks, i.e. quarks whose mass is larger than the proton mass, take part to the non perturbative dynamics of the proton. They are the so-called intrinsic heavy quarks. It has been discussed for a long time that the charm quark, that is the lightest heavy quark and its mass sits slightly above the proton mass, could have a non negligible intrinsic component. However, so far all the efforts to establish the presence of an intrinsic charm remained inconclusive. Here, disentangling the non perturbative component from charm-anticharm pairs arising from high-energy radiation, we provide evidence of intrinsic charm in the proton by exploiting a high-precision determination of the quark-gluon content of the proton based on machine learning and a large experimental dataset. We confirm these findings by comparing to very recent data on Z-boson production with charm jets from the LHCb experiment.

  @misc{MENU23,
    author = {Niccolò Laurenti},
    title = { {Evidence of intrinsic charm quark in the proton} },
    series = {MENU23, Mainz, Germany},
    year = {2023}
  }

• Niccolò Laurenti.Including QED corrections to PDFs: the NNPDF4.0QED set. QCD@LHC23, Durham, UK, 2023 Talk
  [ Indico, Slides, Abstract ]
  The need of percent precision in high energy physics requires the inclusion of QED effects in theoretical predictions, including the contribution of photon initiated processes. We extend the NNPDF4.0 NNLO determination of parton distribution functions (PDFs) with a photon PDF, determined within the LuxQED formalism, which evolves with the gluon and quark PDFs via DGLAP equations that contain NLO QED corrections. We study the impact of the QED effects to the NNPDF4.0 methodology, we compare our results with NNPDF3.1QED and other recent QED PDF fits and we asses the impact of the photon PDF for photon-initiated processes for LHC processes.

  @misc{QCDatLHC23,
    author = {Niccolò Laurenti},
    title = { {Including QED corrections to PDFs: the NNPDF4.0QED set} },
    series = {QCD@LHC23, Durham, UK},
    year = {2023}
  }

• Niccolò Laurenti.Including QED corrections to PDFs: the NNPDF4.0QED set. QCD23, Montpellier, France, 2023 Talk
  [ Slides, Abstract ]
  The need of percent precision in high energy physics requires the inclusion of QED effects in theoretical predictions, including the contribution of photon initiated processes. We extend the NNPDF4.0 NNLO determination of parton distribution functions (PDFs) with a photon PDF, determined within the LuxQED formalism, which evolves with the gluon and quark PDFs via DGLAP equations that contain NLO QED corrections. We study the impact of the QED effects to the NNPDF4.0 methodology, we compare our results with NNPDF3.1QED and other recent QED PDF fits and we asses the impact of the photon PDF for photon-initiated processes for LHC processes.

  @misc{QCD23,
    author = {Niccolò Laurenti},
    title = { {Including QED corrections to PDFs: the NNPDF4.0QED set} },
    series = {QCD23, Montpellier, France},
    year = {2023}
  }

• Niccolò Laurenti.Construction of a third order approximation for heavy flavour production in deep inelastic scattering. Milan Chrismas Meeting 2021, 2021 Talk
  [ Indico, Slides, Abstract ]

  @misc{MCM21,
    author = {Niccolò Laurenti},
    title = { {Construction of a third order approximation for heavy flavour production in deep inelastic scattering} },
    series = {Milan Chrismas Meeting 2021},
    year = {2021}
  }