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Statut |
Confirmé |
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Série |
LPTHE-PPH |
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Domaines |
hep-ph |
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Date |
Mardi 29 Avril 2025 |
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Heure |
14:00 |
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Institut |
LPTHE |
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Salle |
library and zoom link below |
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Nom de l'orateur |
Capatti |
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Prenom de l'orateur |
Zeno |
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Addresse email de l'orateur |
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Institution de l'orateur |
University of Bern |
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Titre |
Multi-partonic interactions and the twist expansion in deep inelastic scattering |
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Résumé |
The KLN theorem establishes that infrared divergences in parton-model diagrams cancel when summed alongside diagrams that account for the simultaneous hard interaction of multiple partons within the same hadron. In this talk, I will present a perturbative model that naturally accounts for these additional diagrams, as well as a realistic notion of twist expansion for observables computed within it. I will explore its equivalence with the parton model on general grounds and via a direct next-to-leading-order calculation of the inclusive deep-inelastic-scattering cross-section. Additionally, I will discuss the analytic tools essential for this calculation, and in particular those relating to the evaluation of iterated discontinuities of Feynman diagrams. I will conclude by outlining how to extend the model to hadronic collisions. |
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Numéro de preprint arXiv |
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Commentaires |
Join Zoom Meeting
https://cern.zoom.us/j/61244417639?pwd=VPdQpFZQHjfG6Y0uAbRg4HJ667A7bT.1
Meeting ID: 612 4441 7639
Passcode: 048748 |
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Fichiers attachés |
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