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1.
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Precise QCD predictions for W-boson production in association with a charm jet
/ Gehrmann-De Ridder, A. (Zurich, ETH ; U. Zurich (main)) ; Gehrmann, T. (U. Zurich (main)) ; Glover, E.W. N. (Durham U., IPPP ; Durham U.) ; Huss, A. (CERN) ; Garcia, A. Rodriguez (Zurich, ETH) ; Stagnitto, G. (U. Zurich (main) ; Milan Bicocca U. ; INFN, Milan Bicocca)
The production of a $W$-boson with a charm quark jet provides a highly sensitive probe of the strange quark distribution in the proton. Employing a novel flavour dressing procedure to define charm quark jets, we compute $W$+charm-jet production up to next-to-next-to-leading order (NNLO) in QCD. [...]
arXiv:2311.14991; ZU-TH 76/23; IPPP/23/69; CERN-TH-2023-217.-
2024-04-04 - 26 p.
- Published in : Eur. Phys. J. C 84 (2024) 361
Fulltext: document - PDF; 2311.14991 - PDF;
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2.
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NNLO Photon Production with Realistic Photon Isolation
/ Schuermann, Robin (Zurich U.) ; Chen, Xuan (Karlsruhe U., ITP ; KIT, Karlsruhe, IAP) ; Gehrmann, Thomas (Zurich U.) ; Glover, E.W.N. (Durham U., IPPP) ; Höfer, Marius (Munich U., ASC) ; Huss, Alexander (CERN)
Isolated photon production at hadron colliders proceeds via direct production and fragmentation processes. Theory predictions for the isolated photon and photon-plus-jet cross section often impose idealised photon isolation criteria, eliminating the fragmentation contribution and introducing a systematic uncertainty in the comparison to data. [...]
arXiv:2208.02669.-
2022-10-20 - 11 p.
- Published in : PoS LL2022 (2022) 034
Fulltext: Publication - PDF; 2208.02669 - PDF;
In : 16th DESY Workshop on Elementary Particle Physics: Loops and Legs in Quantum Field Theory 2022, Ettal, Germany, 25 - 30 Apr 2022, pp.034
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3.
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NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region
/ Gauld, R. (Munich, Max Planck Inst.) ; Gehrmann-De Ridder, A. (ETH, Zurich (main) ; Zurich U.) ; Glover, E.W. N. (Durham U., IPPP ; Durham U.) ; Huss, A. (CERN) ; Garcia, A. Rodriguez (ETH, Zurich (main)) ; Stagnitto, G. (Zurich U.)
We compute next-to-next-to-leading order (NNLO) QCD corrections to neutral vector boson production in association with a charm jet at the LHC. This process is studied in the forward kinematics at $\sqrt{s}=13$ TeV, which may provide valuable constraints on the intrinsic charm component of the proton. [...]
arXiv:2302.12844; MPP-2023-37; ZU-TH 12/23; IPPP/23/09; CERN-TH-2023-034.-
2023-04-27 - 22 p.
- Published in : Eur. Phys. J. C 83 (2023) 336
Fulltext: document - PDF; 2302.12844 - PDF;
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4.
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Precision phenomenology with fiducial cross sections in the triple-differential Drell-Yan process
/ Gehrmann-De Ridder, A. (Zurich, ETH ; Zurich U.) ; Gehrmann, T. (Zurich U.) ; Glover, E.W. N. (Durham U., IPPP) ; Huss, A. (CERN) ; Preuss, C.T. (Zurich, ETH) ; Walker, D.M. (Durham U., IPPP)
The production of lepton pairs (Drell-Yan process) at the LHC is being measured to high precision, enabling the extraction of distributions that are triply differential in the di-lepton mass and rapidity as well as in the scattering angle described by the leptons. The measurements are performed for a fiducial phase space, defined by cuts on the individual lepton momenta and rapidities. [...]
arXiv:2301.11827; CERN-TH-2023-011; IPPP/23/03; ZU-TH 03/23.-
2023-05-02 - 43 p.
- Published in : JHEP 2305 (2023) 002
Fulltext: document - PDF; 2301.11827 - PDF;
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5.
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NNLO interpolation grids for jet production at the LHC
/ Britzger, D. (Munich, Max Planck Inst.) ; Gehrmann-De Ridder, A. (Zurich, ETH ; Zurich U.) ; Gehrmann, T. (Zurich U.) ; Glover, E.W. N. (Durham U., IPPP) ; Gwenlan, C. (Oxford U.) ; Huss, A. (CERN) ; Pires, J. (LIP, Lisbon ; Lisbon U.) ; Rabbertz, K. (KIT, Karlsruhe, ETP ; CERN) ; Savoiu, D. (Hamburg U.) ; Sutton, M.R. (Sussex U.) et al.
Fast interpolation-grid frameworks facilitate an efficient and flexible evaluation of higher-order predictions for any choice of parton distribution functions or value of the strong coupling $\alpha_s$. They constitute an essential tool for the extraction of parton distribution functions and Standard Model parameters, as well as studies of the dependence of cross sections on the renormalisation and factorisation scales. [...]
arXiv:2207.13735; CERN-TH-2022-125; IPPP/22/53; MPP-2022-80; ZU-TH 34/22.-
2022-10-19 - 17 p.
- Published in : Eur. Phys. J. C 82 (2022) 930
Fulltext: 2207.13735 - PDF; document - PDF;
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6.
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Single Photon Production at Hadron Colliders at NNLO QCD with Realistic Photon Isolation
/ Chen, X. (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Gehrmann, T. (Zurich U.) ; Glover, E.W.N. (Durham U., IPPP) ; Höfer, M. (Munich U., ASC) ; Huss, A. (CERN) ; Schürmann, R. (Zurich U.)
Isolated photons at hadron colliders are defined by permitting only a limited amount of hadronic energy inside a fixed-size cone around the candidate photon direction. This isolation criterion admits contributions from collinear photon radiation off QCD partons and from parton-to-photon fragmentation processes. [...]
arXiv:2205.01516; ZU-TH 16/22; KA-TP-12-2022; P3H-22-044; IPPP/22/30; IPPP/22/30,
CERN-TH-2022-072; LMU-ASC 17/22; CERN-TH-2022-072.-
2022-08-05 - 43 p.
- Published in : JHEP 08 (2022) 094
Fulltext: 2205.01516 - PDF; document - PDF;
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7.
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NNLO QCD corrections in full colour for jet production observables at the LHC
/ Chen, X. (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Gehrmann, T. (Zurich U.) ; Glover, E.W. N. (Durham U., IPPP) ; Huss, A. (CERN) ; Mo, J. (Zurich U.)
Calculations for processes involving a high multiplicity of coloured particles often employ a leading colour approximation, where only the leading terms in the expansion of the number of colours $N_c$ and the number of flavours $n_f$ are retained. This approximation of the full colour result is motivated by the $1/N_c^2$ suppression of the first subleading terms and by the increasing complexity of including subleading colour contributions to the calculation. [...]
arXiv:2204.10173; ZU-TH 11/22; KA-TP-07-2022; IPPP/22/20; P3H-22-037; CERN-TH-2022-067.-
2022-09-05 - 31 p.
- Published in : JHEP 2209 (2022) 025
Fulltext: 2204.10173 - PDF; document - PDF;
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8.
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Event Generators for High-Energy Physics Experiments
/ Campbell, J.M. (Fermilab) ; Diefenthaler, M. (Jefferson Lab) ; Hobbs, T.J. (Fermilab ; IIT, Chicago) ; Höche, Stefan (Fermilab) ; Isaacson, Joshua (Fermilab) ; Kling, Felix (DESY) ; Mrenna, Stephen (Fermilab) ; Reuter, J. (DESY) ; Alioli, S. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Andersen, J.R. (Durham U., IPPP) et al.
We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of active development, and opportunities for future improvements. [...]
arXiv:2203.11110; CP3-22-12; DESY-22-042; FERMILAB-PUB-22-116-SCD-T; IPPP/21/51,
JLAB-PHY-22-3576; KA-TP-04-2022; LA-UR-22-22126; LU-TP-22-12; MCNET-22-04,
OUTP-22-03P; P3H-22-024; PITT-PACC 2207; UCI-TR-2022-02.-
2024-05-24 - 225 p.
- Published in : 10.21468/SciPostPhys.16.5.130
Fulltext: jt - PDF; 2203.11110 - PDF; Fulltext from Publisher: PDF; External links: JLab Document Server; Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.
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9.
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Automation of antenna subtraction in colour space: gluonic processes
/ Chen, Xuan (KIT, Karlsruhe ; KIT, Karlsruhe, IKP) ; Gehrmann, Thomas (Zurich U.) ; Glover, E.W. N. (Durham U., IPPP) ; Huss, Alexander (CERN) ; Marcoli, Matteo (Zurich U.)
We present the colourful antenna subtraction method, a reformulation of the antenna subtraction scheme for next-to-next-to-leading order (NNLO) calculations in QCD. The aim of this new approach is to achieve a general and process-independent construction of the subtraction infrastructure at NNLO. [...]
arXiv:2203.13531; CERN-TH-2022-047; IPPP/22/15; KA-TP-05-2022; P3H-22-030; ZU-TH 10/22.-
2022-10-14 - 55 p.
- Published in : JHEP 2210 (2022) 099
Fulltext: document - PDF; 2203.13531 - PDF;
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