Skip to main content

Research Repository

Advanced Search

Professor Daniel Maitre's Outputs (20)

Efficient negative-weight elimination in large high-multiplicity Monte Carlo event samples (2023)
Journal Article
Andersen, J. R., Maier, A., & Maître, D. (2023). Efficient negative-weight elimination in large high-multiplicity Monte Carlo event samples. The European Physical Journal C, 83(9), Article 835. https://doi.org/10.1140/epjc/s10052-023-11905-0

We demonstrate that cell resampling can eliminate the bulk of negative event weights in large event samples of high multiplicity processes without discernible loss of accuracy in the predicted observables. The application of cell resampling to much l... Read More about Efficient negative-weight elimination in large high-multiplicity Monte Carlo event samples.

Unweighting multijet event generation using factorisation-aware neural networks (2023)
Journal Article
Janßen, T., Maître, D., Schumann, S., Siegert, F., & Truong, H. (2023). Unweighting multijet event generation using factorisation-aware neural networks. SciPost Physics, 15(3), Article 107. https://doi.org/10.21468/scipostphys.15.3.107

In this article we combine a recently proposed method for factorisation-aware matrix element surrogates with an unbiased unweighting algorithm. We show that employing a sophisticated neural network emulation of QCD multijet matrix elements based on d... Read More about Unweighting multijet event generation using factorisation-aware neural networks.

One-loop matrix element emulation with factorisation awareness (2023)
Journal Article
Maître, D., & Truong, H. (2023). One-loop matrix element emulation with factorisation awareness. Journal of High Energy Physics, 2023(5), Article 159. https://doi.org/10.1007/jhep05%282023%29159

In this article we present an emulation strategy for one-loop matrix elements. This strategy is based on the factorisation properties of matrix elements and is an extension of the work presented in [1]. We show that a percent-level accuracy can be ac... Read More about One-loop matrix element emulation with factorisation awareness.

Machine learning and LHC event generation (2023)
Journal Article
Butter, A., Plehn, T., Schumann, S., Badger, S., Caron, S., Cranmer, K., …Zupan, J. (2023). Machine learning and LHC event generation. SciPost Physics, 14(4), Article 079. https://doi.org/10.21468/scipostphys.14.4.079

First-principle simulations are at the heart of the high-energy physics research program. They link the vast data output of multi-purpose detectors with fundamental theory predictions and interpretation. This review illustrates a wide range of applic... Read More about Machine learning and LHC event generation.

Multi-variable integration with a neural network (2023)
Journal Article
Maître, D., & Santos-Mateos, R. (2023). Multi-variable integration with a neural network. Journal of High Energy Physics, 2023(3), https://doi.org/10.1007/jhep03%282023%29221

In this article we present a method for automatic integration of parametric integrals over the unit hypercube using a neural network. The method fits a neural network to the primitive of the integrand using a loss function designed to minimize the di... Read More about Multi-variable integration with a neural network.

A factorisation-aware Matrix element emulator (2021)
Journal Article
Maître, D., & Truong, H. (2021). A factorisation-aware Matrix element emulator. Journal of High Energy Physics, 2021(11), Article 066. https://doi.org/10.1007/jhep11%282021%29066

In this article we present a neural network based model to emulate matrix elements. This model improves on existing methods by taking advantage of the known factorisation properties of matrix elements. In doing so we can control the behaviour of simu... Read More about A factorisation-aware Matrix element emulator.

Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism (2021)
Journal Article
De Laurentis, G., & Maître, D. (2021). Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism. Journal of High Energy Physics, 2021(1), Article 16. https://doi.org/10.1007/jhep02%282021%29016

We present all two-loop five-parton leading-colour finite remainders in the spinor-helicity formalism by analysing numerical evaluations of their known expressions in terms of Mandelstam invariants. Recasting them in terms of spinor-helicity variable... Read More about Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism.

Extracting analytical one-loop amplitudes from numerical evaluations (2019)
Journal Article
Laurentis, G. D., & Maitre, D. (2019). Extracting analytical one-loop amplitudes from numerical evaluations. Journal of High Energy Physics, 7, Article 123. https://doi.org/10.1007/jhep07%282019%29123

In this article we present a method to generate analytic expressions for the integral coefficients of loop amplitudes using numerical evaluations only. We use highprecision arithmetics to explore the singularity structure of the coefficients and deco... Read More about Extracting analytical one-loop amplitudes from numerical evaluations.

Weak vector boson production with many jets at the LHC s=13  TeV (2018)
Journal Article
Anger, F., Febres Cordero, F., Höche, S., & Maître, D. (2018). Weak vector boson production with many jets at the LHC s=13  TeV. Physical Review D, 97(9), Article 096010. https://doi.org/10.1103/physrevd.97.096010

Signatures with an electroweak vector boson and many jets play a crucial role at the Large Hadron Collider, both in the measurement of Standard-Model parameters and in searches for new physics. Precise predictions for these multiscale processes are t... Read More about Weak vector boson production with many jets at the LHC s=13  TeV.

Strong coupling constant extraction from high-multiplicity Z + jets observables (2018)
Journal Article
Johnson, M., & Maître, D. (2018). Strong coupling constant extraction from high-multiplicity Z + jets observables. Physical Review D, 97(5), Article 054013. https://doi.org/10.1103/physrevd.97.054013

We present a strong coupling constant extraction at next-to-leading order QCD accuracy using ATLAS Z + 2 ,3,4 jets data. This is the first extraction using processes with a dependency on high powers of the coupling constant. We obtain values of the s... Read More about Strong coupling constant extraction from high-multiplicity Z + jets observables.

N(N)LO event files: applications and prospects (2016)
Presentation / Conference Contribution
Maître, D., Heinrich, G., & Johnson, M. (2016, December). N(N)LO event files: applications and prospects. Presented at Loops and Legs in Quantum Field Theory, Leipzig, Germany

In this contribution we comment on the use of NLO n-Tuples and consider their extension to NNLO. As an application of n-Tuples we present preliminary results of a strong coupling extraction from a measurement of the production of Z +2,3,4 jets at the... Read More about N(N)LO event files: applications and prospects.

Extrapolating W-associated jet-production ratios at the LHC (2015)
Journal Article
Bern, B., Dixon, L., Febres Cordero, F., Hoeche, S., Ita, H., & Maitre, D. (2015). Extrapolating W-associated jet-production ratios at the LHC. Physical Review D, 92(1), Article 014008. https://doi.org/10.1103/physrevd.92.014008

Electroweak vector-boson production, accompanied by multiple jets, is an important background to searches for physics beyond the standard model. A precise and quantitative understanding of this process is helpful in constraining deviations from known... Read More about Extrapolating W-associated jet-production ratios at the LHC.

NLO high multiplicity processes (2015)
Journal Article
Maître, D. (2015). NLO high multiplicity processes. Journal of Physics: Conference Series, 608, Article 012075. https://doi.org/10.1088/1742-6596/608/1/012075

In this presentation some aspects of Next-to-Leading Order (NLO) calculations in QCD are presented. The focus is brought to aspects of such calculations for processes involving a high final-state particle multiplicity.

Next-to-leading orderγγ+2−jetproduction at the LHC (2014)
Journal Article
Bern, Z., Dixon, L., Febres Cordero, F., Höche, S., Ita, H., Kosower, D., …Maître, D. (2014). Next-to-leading orderγγ+2−jetproduction at the LHC. Physical Review D, 90(5), Article 054004. https://doi.org/10.1103/physrevd.90.054004

We present next-to-leading-order QCD predictions for cross sections and for a comprehensive set of distributions in γγ þ 2-jet production at the Large Hadron Collider. We consider the contributions from loop amplitudes for two photons and four gluons... Read More about Next-to-leading orderγγ+2−jetproduction at the LHC.

Ntuples for NLO events at hadron colliders (2014)
Journal Article
Bern, Z., Dixon, L., Febres Cordero, F., Höche, S., Ita, H., Kosower, D., & Maître, D. (2014). Ntuples for NLO events at hadron colliders. Computer Physics Communications, 185(5), 1443-1460. https://doi.org/10.1016/j.cpc.2014.01.011

We present an event-file format for the dissemination of next-to-leading-order (NLO) predictions for QCD processes at hadron colliders. The files contain all information required to compute generic jet-based infrared-safe observables at fixed order (... Read More about Ntuples for NLO events at hadron colliders.

Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron (2010)
Journal Article
Berger, C., Bern, Z., Dixon, L. J., Febres Cordero, F., Forde, D., Gleisberg, T., …Maitre, D. (2010). Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron. Physical Review D, 82(7), Article 074002. https://doi.org/10.1103/physrevd.82.074002

Using BlackHat in conjunction with SHERPA, we have computed next-to-leading order QCD predictions for a variety of distributions in Z,γ*+1, 2, 3-jet production at the Tevatron, where the Z boson or off-shell photon decays into an electron-positron pa... Read More about Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron.