Publications (9)
Proposal for the validation of Monte Carlo implementations of the standard model effective field theory
Gauthier Durieux, Ilaria Brivio, Fabio Maltoni +38
We propose a procedure to cross-validate Monte Carlo implementations of the standard model effective field theory. It is based on the numerical comparison of squared amplitudes com…
Results from TopFitter
Andy Buckley, Christoph Englert, James Ferrando +5
We discuss a global fit of top quark BSM couplings, phrased in the model-independent language of higher-dimensional effective operators, to the currently available data from the LH…
TopFitter: Fitting top-quark Wilson Coefficients to Run II data
Stephen Brown, Andy Buckley, Christoph Englert +7
We describe the latest TopFitter analysis, which uses top quark observables to fit the Wilson Coefficients of the SM augmented with dimension-6 operators. In particular, we discuss…
Reconstructing singly produced top partners in decays to
Nicolas Gutierrez Ortiz, James Ferrando, Deepak Kar +1
Fermionic top partners are a feature of many models of physics beyond the Standard Model. We propose a search strategy for single production of top partners focussing specifically…
Constraining new resonant physics with top spin polarisation information
Christoph Englert, James Ferrando, Karl Nordström
We provide a comprehensive analysis of the power of including top quark-polarisation information to kinematically challenging resonance searches, for which ATLAS and CMS…
The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II
Juan Rojo, Alberto Accardi, Richard D. Ball +20
The accurate determination of the Parton Distribution Functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact…
A global fit of top quark effective theory to data
Andy Buckley, Christoph Englert, James Ferrando +4
In this paper we present a global fit of beyond the Standard Model (BSM) dimension six operators relevant to the top quark sector to currently available data. Experimental measurem…
Constraining top quark effective theory in the LHC Run II era
Andy Buckley, Christoph Englert, James Ferrando +4
We perform an up-to-date global fit of top quark effective theory to experimental data from the Tevatron, and from LHC Runs I and II. Experimental data includes total cross-section…
LHAPDF6: parton density access in the LHC precision era
Andy Buckley, James Ferrando, Stephen Lloyd +5
The Fortran LHAPDF library has been a long-term workhorse in particle physics, providing standardised access to parton density functions for experimental and phenomenological purpo…