1.1k citations · 2.1k across the 27 of their papers we have counts for
17 papers · 1 filter
Back to the Formula -- LHC Edition
Anja Butter, Tilman Plehn, Nathalie Soybelman +1
While neural networks offer an attractive way to numerically encode functions, actual formulas remain the language of theoretical particle physics. We show how symbolic regression…
Simulation-based inference methods for particle physics
Johann Brehmer, Kyle Cranmer
Our predictions for particle physics processes are realized in a chain of complex simulators. They allow us to generate high-fidelity simulated data, but they are not well-suited f…
Benchmarking simplified template cross sections in production
Johann Brehmer, Sally Dawson, Samuel Homiller +2
Simplified template cross sections define a framework for the measurement and dissemination of kinematic information in Higgs measurements. We benchmark the currently proposed setu…
MadMiner: Machine learning-based inference for particle physics
Johann Brehmer, Felix Kling, Irina Espejo +1
Precision measurements at the LHC often require analyzing high-dimensional event data for subtle kinematic signatures, which is challenging for established analysis methods. Recent…
Effective LHC measurements with matrix elements and machine learning
Johann Brehmer, Kyle Cranmer, Irina Espejo +3
One major challenge for the legacy measurements at the LHC is that the likelihood function is not tractable when the collected data is high-dimensional and the detector response ha…
A Guide to Constraining Effective Field Theories with Machine Learning
Johann Brehmer, Kyle Cranmer, Gilles Louppe +1
We develop, discuss, and compare several inference techniques to constrain theory parameters in collider experiments. By harnessing the latent-space structure of particle physics p…
Constraining Effective Field Theories with Machine Learning
Johann Brehmer, Kyle Cranmer, Gilles Louppe +1
We present powerful new analysis techniques to constrain effective field theories at the LHC. By leveraging the structure of particle physics processes, we extract extra informatio…
Better Higgs-CP Tests Through Information Geometry
Johann Brehmer, Felix Kling, Tilman Plehn +1
Measuring the CP symmetry in the Higgs sector is one of the key tasks of the LHC and a crucial ingredient for precision studies, for example in the language of effective Lagrangian…
Better Higgs Measurements Through Information Geometry
Johann Brehmer, Kyle Cranmer, Felix Kling +1
Information geometry can be used to understand and optimize Higgs measurements at the LHC. The Fisher information encodes the maximum sensitivity of observables to model parameters…
Les Houches 2015: Physics at TeV colliders - new physics working group report
G. Brooijmans, C. Delaunay, A. Delgado +78
We present the activities of the 'New Physics' working group for the 'Physics at TeV Colliders' workshop (Les Houches, France, 1-19 June, 2015). Our report includes new physics stu…
Pushing Higgs Effective Theory over the Edge
Anke Biekötter, Johann Brehmer, Tilman Plehn
Based on a vector triplet model we study a possible failure of dimension-6 operators in describing LHC Higgs kinematics. First, we illustrate that including dimension-6 contributio…
The Diboson Excess: Experimental Situation and Classification of Explanations; A Les Houches Pre-Proceeding
Johann Brehmer, Gustaaf Brooijmans, Giacomo Cacciapaglia +21
We examine the `diboson' excess at TeV seen by the LHC experiments in various channels. We provide a comparison of the excess significances as a function of the mass of th…
Pushing Higgs Effective Theory to its Limits
Johann Brehmer, Ayres Freitas, David Lopez-Val +1
At the LHC, an effective theory of the Higgs sector allows us to analyze kinematic distributions in addition to inclusive rates, although there is no clear hierarchy of scales. We…
Symmetry Restored in Dibosons at the LHC?
Johann Brehmer, JoAnne Hewett, Joachim Kopp +2
A number of LHC resonance search channels display an excess in the invariant mass region of 1.8 - 2.0 TeV. Among them is a excess in the fully hadronic decay of a pair of…
Polarized WW Scattering on the Higgs Pole
Johann Brehmer, Joerg Jaeckel, Tilman Plehn
The Higgs discovery has given us the Higgs-gauge sector as a new handle to search for physics beyond the Standard Model. This includes physics scenarios originally linked to massiv…
Towards testing a two-Higgs-doublet model with maximal CP symmetry at the LHC: construction of a Monte Carlo event generator
J. Brehmer, V. Lendermann, M. Maniatis +3
A Monte Carlo event generator is constructed for a two-Higgs-doublet model with maximal CP symmetry, the MCPM. The model contains five physical Higgs bosons; the , behaving sim…
Monte-Carlo event generation for a two-Higgs-doublet model with maximal CP symmetry
Johann Brehmer
Recently a two-Higgs-doublet model with maximal symmetry under generalised CP transformations, the MCPM, has been proposed. The theory features a unique fermion mass spectrum which…