Theoretical Particle Physics
Prof. Lorenzo Tancredi
Research Field
Our main research interest is at the interface between new mathematical methods in quantum field theory and high-energy particle physics phenomenology. We study the mathematical structures which hide behind scattering amplitudes and Feynman diagrams, with the goal of developing new methods to study the dynamics of the Standard Model of particle physics. This will help us, among the others, to understand the details of the spontaneous symmetry breaking mechanism and the properties of the Higgs boson and, possibly, it will pave the way to discover signs of New Physics.
Members of the Research Group
Professor
Photo | Degree | Firstname | Lastname | Room | Phone | |
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Prof. Dr. | Lorenzo | Tancredi | 3248 | +49 89 289-12355 |
Office
Photo | Degree | Firstname | Lastname | Room | Phone | |
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Viktoriia | Orlova | – | +49 89 35831-7100 |
Scientists
Photo | Degree | Firstname | Lastname | Room | Phone | |
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Dr. | Federico | Buccioni | – | – | |
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M.Sc. | Maximilian | Delto | – | – | |
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M.Sc. | Philipp | Kreer | – | – | |
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Cesare Carlo | Mella | – | – | ||
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M.Sc. | Nikolaos | Syrrakos | – | – |
Teaching
Course with Participations of Group Members
Titel und Modulzuordnung | |||
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Art | SWS | Dozent(en) | Termine |
Theoretical Methods for QCD at Colliders
Zuordnung zu Modulen: |
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VO | 2 | Tancredi, L. |
Do, 08:30–10:00, PH 3344 |
Exercise to Theoretical Methods for QCD at Colliders
Zuordnung zu Modulen: |
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UE | 1 |
Leitung/Koordination: Tancredi, L. |
Termine in Gruppen |
Moderne Ideen in der theoretischen Teilchenphysik Zuordnung zu Modulen: |
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SE | 2 | Tancredi, L. |
Mo, 16:00–18:00, PH 1121 Mi, 14:00–16:00, PH-Cont. C.3201 Mi, 12:00–14:00, PH 3343 |
Seminar über Theoretische Elementarteilchenphysik aktuelle Informationen Zuordnung zu Modulen: |
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SE | 2 | Beneke, M. Garbrecht, B. Ibarra, A. Recksiegel, S. Tancredi, L. … (insgesamt 6) |
Do, 14:00–16:00, PH HS3 |
Offers for Theses in the Group
- One-jettiness soft function at NNLO in QCD
Computation of QCD corrections to LHC cross-sections usually requires to understand the structure of infra-red divergences. These obstructions appear both in so-called virtual and real corrections and require dedicated methods (e.g. “slicing methods”) to handle them and obtain finite expressions for numerical simulations. Infra-red divergences can be shown to factorise universally and the goal of the project is to analytically compute one of the ingredients which enter these general factorisation formulas, the so-called one-jettiness soft function. This function describes the contributions of soft radiation to cross sections at hadron colliders for processes with one jet and is an important ingredient for the jettiness slicing method. Technically, the computation of the required integrals can be tackled using advanced multi-loop techniques such as integration-by-parts and the method of differential equations.
- suitable as
- Master’s Thesis Nuclear, Particle, and Astrophysics
- Supervisor: Lorenzo Tancredi
- Two-loop Feynman integrals for single top production at NNLO
Providing higher order QCD corrections to the hadronic production of top quarks at the LHC is an important step towards obtaining a more detailed understanding of electroweak symmetry breaking, due to the fact that top quarks receive their mass through interactions with the Higgs background field. Single top production is one of the most prominent top quark production channels at the LHC, with the t-channel process, which involves the production of a single top quark mediated by an exchange of a W boson, accounting for 70% of all single top quarks produced at LHC collisions. Recently, NNLO corrections to the so-called non-factorisable contributions to the single top t-channel were computed. The calculation was performed by calculating all the relevant 2-loop Feynman integrals numerically. It will be the aim of this project to provide an efficient analytic representation of these integrals in terms of special functions (e.g. multiple polylogarithms), by employing modern methods of multiloop calculations such as integration-by-part identities, canonical differential equations and the study of the relevant special functions.
- suitable as
- Master’s Thesis Nuclear, Particle, and Astrophysics
- Supervisor: Lorenzo Tancredi
Current and Finished Theses in the Group
- Algorithms for Iterated Elliptic Integrals
- Abschlussarbeit im Bachelorstudiengang Physik
- Themensteller(in): Lorenzo Tancredi
- Canonical bases and leading singularities for polylogarithms and beyond
- Abschlussarbeit im Masterstudiengang Physik (Kern-, Teilchen- und Astrophysik)
- Themensteller(in): Lorenzo Tancredi