A5033300693- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Advanced Data Storage Technologies
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Neutrino Physics Research
University of Zurich
2019-2024
A bstract The theoretical description of photon production at particle colliders combines direct radiation and fragmentation processes, which can not be separated from each other for definitions isolation used in experimental measurements. these processes must account collinear parton-photon configurations, retaining the dependence on momentum fraction, includes parton-to-photon functions. We extend antenna subtraction method to include up next-to-next-to-leading order (NNLO) QCD. Collinear...
A bstract Collider processes with identified hadrons in the final state are widely studied view of determining details proton structure and understanding hadronization. Their theory description requires introduction fragmentation functions, which parametrise transition a produced parton into hadron. To compute higher-order perturbative corrections to these subtraction method for infrared singular configurations. We extend antenna hadron hadronic collisions up next-to-next-to-leading order...
A bstract Isolated photons at hadron colliders are defined by permitting only a limited amount of hadronic energy inside fixed-size cone around the candidate photon direction. This isolation criterion admits contributions from collinear radiation off QCD partons and parton-to-photon fragmentation processes. We compute NNLO corrections to isolated photon-plus-jet production, including these two contributions. Our newly derived results allow us reproduce prescription used in experimental...
Collider processes with identified hadrons in the final state are widely studied view of determining details proton structure and understanding hadronization. Their theory description requires introduction fragmentation functions, which parametrise transition a produced parton into hadron. To compute higher-order perturbative corrections to these subtraction method for infrared singular configurations. We extend antenna hadron hadronic collisions up next-to-next-to-leading order (NNLO) QCD...
We derive precision predictions for the production of dark-matter particles recoiling against a jet with large transverse momentum at LHC. The fermions are described within simplified model and couple to Standard Model via vector mediator. Our mono-jet signature include resummation leading next-to-leading threshold logarithms. corresponding matching coefficient is evaluated NLO. resummed result matched fixed-order NLO cross section obtained from MadGraph framework. discuss numerical results...
We report on our recent progress towards including the photon fragmentation contribution in next-to-next-to-leading order (NNLO) QCD predictions for production cross sections. This extension to previous NNLO calculations requires identification of singular parton-photon collinear limits. discuss how these limits can be subtracted within antenna subtraction using functions and we outline their integration.