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CoLoRFul for hadron collisions: Integrating the counterterms
/ Van Thurenhout, S. (Wigner RCP, Budapest) ; Del Duca, V. (Zurich, ETH ; Zurich U. ; Frascati) ; Duhr, C. (U. Bonn, Phys. Inst., BCTP) ; Fekésházy, L. (Wigner RCP, Budapest ; Hamburg U., Inst. Theor. Phys. II ; Eotvos U.) ; Guadagni, F. (Zurich U.) ; Mukherjee, P. (Hamburg U., Inst. Theor. Phys. II) ; Somogyi, G. (Wigner RCP, Budapest) ; Tramontano, F. (CERN ; Naples U.)
In order to numerically compute scattering cross sections in QCD, one needs to deal with various kinematic divergences that appear at intermediate stages of the calculation. [...]
DESY-24-190 ; arXiv:2412.12750.
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Two-loop form factors for pseudo-scalar quarkonium production and decay
/ Abreu, Samuel (CERN ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Becchetti, Matteo (INFN, Turin) ; Duhr, Claude (U. Bonn, Phys. Inst., BCTP) ; Ozcelik, Melih A. (IJCLab, Orsay ; Karlsruhe U., TTP)
We present the analytic expressions for the two-loop form factors for the production or decay of pseudo-scalar quarkonia, in a scheme where the quarks are produced at threshold. We consider the two-loop amplitude for the process $\gamma \gamma \leftrightarrow {^1S_0^{[1]}}$, that was previously known only numerically, as well as for the processes $gg \leftrightarrow {^1S_0^{[1]}}$, $\gamma g \leftrightarrow {^1S_0^{[8]}}$ and $gg \leftrightarrow {^1S_0^{[8]}}$, which have not been computed before. [...]
arXiv:2211.08838; BONN-TH-2022-23; CERN-TH-2022-187; TTP22-068.-
2023-02-27 - 37 p.
- Published in : JHEP 2302 (2023) 250
Fulltext: document - PDF; 2211.08838 - PDF;
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TF07 Snowmass Report: Theory of Collider Phenomena
/ Maltoni, F. (Louvain U., CP3 ; INFN, Bologna ; U. Bologna, DIFA) ; Su, S. (Arizona U.) ; Thaler, J. (MIT, Cambridge, CTP ; IAIFI, Cambridge ; Harvard U.) ; Aarrestad, T.K. (CERN) ; Aboubrahim, A. (Munster U., ITP) ; Adhikari, S. (Kansas U. ; Johns Hopkins U.) ; Agapov, I. (DESY) ; Agashe, K. (Maryland U.) ; Agrawal, P. (Oxford U., Theor. Phys.) ; Airen, S. (Maryland U.) et al.
Theoretical research has long played an essential role in interpreting data from high-energy particle colliders and motivating new accelerators to advance the energy and precision frontiers. [...]
arXiv:2210.02591 ; FERMILAB-FN-1203-QIS.
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Fermilab Library Server - eConf - Fulltext - Fulltext
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The Diagrammatic Coaction
/ Gardi, Einan (Edinburgh U.) ; Abreu, Samuel (CERN ; Edinburgh U.) ; Britto, Ruth (Trinity Coll., Dublin) ; Duhr, Claude (Bonn U.) ; Matthew, James (Edinburgh U.)
The diagrammatic coaction underpins the analytic structure of Feynman integrals, their cuts and the differential equations they admit. The coaction maps any diagram into a tensor product of its pinches and cuts. [...]
arXiv:2207.07843; CERN-TH-2022-122; BONN-TH-2022-18.-
2022-10-20 - 19 p.
- Published in : PoS LL2022 (2022) 015
Fulltext: 2207.07843 - PDF; document - PDF;
In : 16th DESY Workshop on Elementary Particle Physics: Loops and Legs in Quantum Field Theory 2022, Ettal, Germany, 25 - 30 Apr 2022, pp.015
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The SAGEX review on scattering amplitudes
/ Travaglini, Gabriele (Queen Mary, U. of London) ; Brandhuber, Andreas (Queen Mary, U. of London) ; Dorey, Patrick (Durham U.) ; McLoughlin, Tristan (Trinity Coll., Dublin ; Humboldt U., Berlin) ; Abreu, Samuel (CERN ; Edinburgh U., Inst. Astron.) ; Bern, Zvi (UCLA) ; Bjerrum-Bohr, N. Emil J. (Bohr Inst.) ; Blümlein, Johannes (DESY, Zeuthen) ; Britto, Ruth (Trinity Coll., Dublin) ; Carrasco, John Joseph M. (Northwestern U. ; IPhT, Saclay) et al.
This is an introduction to, and invitation to read, a series of review articles on scattering amplitudes in gauge theory, gravity, and superstring theory. Our aim is to provide an overview of the field, from basic aspects to a selection of current (2022) research and developments..
arXiv:2203.13011; SAGEX-22-01.-
2022-11-30 - 15 p.
- Published in : J. Phys. A 55 (2022) 443001
Fulltext: document - PDF; 2203.13011 - PDF;
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The dawn of N3LO
/ Duhr, Claude (speaker)
Over the last 5 years there was tremendous progress in performing computations for hadron colliders at next-to-next-to-next-to-leading order (N3LO) in the strong coupling constant. In particular, the computation of fully-inclusive N3LO cross sections for color-singlet production is by now well understood. These results can serve as a template to assess the impact and the importance of N3LO corrections. I will review the state-of-the-art of these computations and what we have learned about hadron collider phenomenology at N3LO
2022 - 4264.
Theory Colloquia
External link: Event details
In : The dawn of N3LO
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Functions Beyond Multiple Polylogarithms for Precision Collider Physics
/ Bourjaily, Jacob L. (Penn State U., University Park, IGC ; Bohr Inst.) ; Broedel, Johannes (Zurich, ETH) ; Chaubey, Ekta (Turin U. ; INFN, Turin) ; Duhr, Claude (Bonn U.) ; Frellesvig, Hjalte (Bohr Inst.) ; Hidding, Martijn (Uppsala U.) ; Marzucca, Robin (Bohr Inst.) ; McLeod, Andrew J. (CERN ; UCLA) ; Spradlin, Marcus (Brown U.) ; Tancredi, Lorenzo (Munich, Tech. U.) et al.
Feynman diagrams constitute one of the essential ingredients for making precision predictions for collider experiments. [...]
arXiv:2203.07088 ; BONN-TH-2022-05 ; UUITP-11/22 ; CERN-TH-2022-029 ; TUM-HEP-1391/22,
HU-EP-22/08 ; MITP-22-022.
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eConf - Fulltext
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