A tool for automated perturbative cross section computations of asymmetric hadronic collisions at next-to-leading order using the $\texttt{MadGraph5_aMC@NLO}$ framework

Safronov, A. N.; Flore, Carlo; Kikoła, D. P.; Kusina, A.; Lansberg, Jean-Philippe; Mattelaer, Olivier; Shao, Hua-Sheng

doi:10.22323/1.414.0494

Cited by 4 publications

(4 citation statements)

References 16 publications

(18 reference statements)

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“…This new extension empowers us to predict a wide range of observables, including rapidity and transverse momentum, for both charm-and bottom-quark production at any CM energy. While our current extension focuses on direct photoproduction, it offers the potential for expansion to include resolved processes, as it can use two distinct PDFs [8]. Furthermore, our versatile tool extends its applicability to explore exotic processes such as top quark and Higgs boson photoproduction.…”

Section: Discussionmentioning

confidence: 99%

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Asymmetric collisions in MadGraph5_aMC@NLO

Manna,

Safronov,

Flore

et al. 2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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We will gain unprecedented, high-accuracy insights into the internal structure of the atomic nucleus thanks to lepton-hadron collision studies in the coming years at the Electron-Ion-Collider (EIC) in the United States. A good control of radiative corrections is necessary for the EIC to be fully exploited and to extract valuable information from various measurements. We present our extension of photoproduction at fixed order in MadGraph5_aMC@NLO, a widely used framework for (next-to-)leading order calculations at the Large Hadron Collider (LHC). It applies to electronhadron collisions, in which the quasi-real photon comes from an electron as well as to protonnucleus and nucleus-nucleus collisions.

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Section: Discussionmentioning

confidence: 99%

“…More details about the implementation can be found in Ref. [8]. In the photoproduction1 case, one needs to replace one of the PDFs in Eq.…”

Section: Laboni Mannamentioning

confidence: 99%

Asymmetric collisions in MadGraph5_aMC@NLO

Manna,

Safronov,

Flore

et al. 2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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“…Preliminary results are presented in Ref. [29], and will be made available soon on NLOAccess. These results will allow one to automatically calculate at fixed-order the nuclear modification factors, that describes the nuclear effects affecting the PDFs of quarks and gluons inside a bound nucleon.…”

Section: Discussionmentioning

confidence: 99%

NLOAccess: automated online computations for heavy ions and quarkonia

Flore¹

2023

Preprint

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We present NLOAccess, an online platform acting as a virtual access to automated perturbative computations of physical observables related to hadronic physics, including heavy ions and quarkonium production. We discuss the design of the project and illustrate how, with few steps and without any need of pre-code or code compilation, a user can generate events and calculate cross sections related to quarkonium production and/or heavy ion collisions at leading and next-to-leading order in α s using MadGraph5 aMC-@NLO or HELAC-Onia. Finally, we report about the obtained results in terms of number of users and runs, and we illustrate the future plans of the project.Keywords Heavy ions • quarkonia • hadronic physics • event generators • online computation 1 A non exhaustive list of UFO models can be found at https://madgraph.mi.infn.it/models db.dat

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“…Another important development will be linking the JETHAD technology to fully automated codes devoted to the study of quarkonium production at NLO. We mainly refer to MadGraph5_aMC@NLO [522] and HELAC-Onia [116,117] as interfaced with the NLOAccess virtual platform [523,524]. In this appendix, we give the analytic formula for the NLO correction to the impact factor describing the production of a forward quarkonium Q at large transverse momentum (for the derivation, see Refs.…”

Section: Discussionmentioning

confidence: 99%

Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

Celiberto

2023

Universe

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In this review, we discuss and extend the study of the inclusive production of vector quarkonia, J/ψ and Υ, emitted with large transverse momenta and rapidities at the LHC. We adopt the novel ZCW19+ determination of fragmentation functions to depict the quarkonium production mechanism at the next-to-leading level of perturbative QCD. This approach is based on the nonrelativistic QCD formalism well adapted to describe the formation of a quarkonium state from the collinear fragmentation of a gluon or a constituent heavy quark at the lowest energy scale. We rely upon the NLL/NLO+ hybrid high-energy and collinear factorization for differential cross-sections, where the collinear formalism is enhanced by the BFKL resummation of next-to-leading energy logarithms arising in the t-channel. We employ the method to analyze the behavior of the rapidity distributions for double-inclusive vector quarkonium and inclusive vector quarkonium plus jet emissions. We discover that the natural stability of the high-energy series, previously seen in observables sensitive to the emission of hadrons with heavy flavor detected in the rapidity acceptance of LHC barrel calorimeters, becomes even more manifest when these particles are tagged in forward regions covered by endcaps. Our findings present the important message that vector quarkonia at the LHC via hybrid factorization offer a unique chance to perform precision studies of high-energy QCD, as well as an intriguing opportunity to shed light on the quarkonium production puzzle.

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A tool for automated perturbative cross section computations of asymmetric hadronic collisions at next-to-leading order using the $\texttt{MadGraph5_aMC@NLO}$ framework

Cited by 4 publications

References 16 publications

Asymmetric collisions in MadGraph5_aMC@NLO

Asymmetric collisions in MadGraph5_aMC@NLO

NLOAccess: automated online computations for heavy ions and quarkonia

Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

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