111 citations · 447 across the 21 of their papers we have counts for
19 papers · 1 filter
Combination of aNLO PDFs and implications for Higgs production cross-sections at the LHC
Thomas Cridge, Lucian A. Harland-Lang, Jamie McGowan +14
We discuss how the two existing approximate NLO (aNLO) sets of parton distributions (PDFs) from the MSHT20 and NNPDF4.0 series can be combined for LHC phenomenology, both i…
An FONLL prescription with coexisting flavor number PDFs
Andrea Barontini, Alessandro Candido, Felix Hekhorn +2
We present a new prescription to account for heavy quark mass effects in the determination of parton distribution functions (PDFs) based on the FONLL scheme. Our prescription makes…
Bayesian Inference with Gaussian Processes for the Determination of Parton Distribution Functions
Alessandro Candido, Luigi Del Debbio, Tommaso Giani +1
We discuss a Bayesian methodology for the solution of the inverse problem underlying the determination of parton distribution functions (PDFs). In our approach, Gaussian Processes…
The Path to NLO Parton Distributions
The NNPDF Collaboration, Richard D. Ball, Andrea Barontini +16
We extend the existing leading (LO), next-to-leading (NLO), and next-to-next-to-leading order (NNLO) NNPDF4.0 sets of parton distribution functions (PDFs) to approximate next-to-ne…
Yadism: Yet Another Deep-Inelastic Scattering Module
Alessandro Candido, Felix Hekhorn, Giacomo Magni +2
We present yadism, a library for the evaluation of both polarized and unpolarized deep-inelastic scattering (DIS) structure functions and cross sections up to NLO in perturbati…
Determination of the theory uncertainties from missing higher orders on NNLO parton distributions with percent accuracy
The NNPDF Collaboration, Richard D. Ball, Andrea Barontini +16
We include uncertainties due to missing higher order corrections to QCD computations (MHOU) used in the determination of parton distributions (PDFs) in the recent NNPDF4.0 set of P…
Photons in the proton: implications for the LHC
The NNPDF Collaboration, Richard D. Ball, Andrea Barontini +16
We construct a set of parton distribution functions (PDFs), based on the recent NNPDF4.0 PDF set, that also include a photon PDF. The photon PDF is constructed using the LuxQED for…
The intrinsic charm quark valence distribution of the proton
Richard D. Ball, Alessandro Candido, Juan Cruz-Martinez +7
We provide a first quantitative indication that the wave function of the proton contains unequal distributions of charm quarks and antiquarks, i.e. a nonvanishing intrinsic valence…
On the positivity of MSbar parton distributions
Alessandro Candido, Stefano Forte, Tommaso Giani +1
We revisit our argument that shows that parton distribution Functions (PDFs) in the MSbar{ scheme are non-negative in the perturbative region, with the main goals of elucidating it…
Theory prediction in PDF fitting
Andrea Barontini, Alessandro Candido, Juan M. Cruz-Martinez +2
Continuously comparing theory predictions to experimental data is a common task in analysis of particle physics such as fitting parton distribution functions (PDFs). However, typic…
Pineline: Industrialization of High-Energy Theory Predictions
Andrea Barontini, Alessandro Candido, Juan M. Cruz-Martinez +2
We present a collection of tools automating the efficient computation of large sets of theory predictions for high-energy physics. Calculating predictions for different processes o…
Neutrino Structure Functions from GeV to EeV Energies
Alessandro Candido, Alfonso Garcia, Giacomo Magni +3
The interpretation of present and future neutrino experiments requires accurate theoretical predictions for neutrino-nucleus scattering rates. Neutrino structure functions can be r…
Theory pipeline for PDF fitting
Andrea Barontini, Alessandro Candido, Juan Cruz-Martinez +3
Fitting PDFs requires the integration of a broad range of datasets, both from data and theory side, into a unique framework. While for data the integration mainly consists in the s…
Parton Distributions and New Physics Searches: the Drell-Yan Forward-Backward Asymmetry as a Case Study
Richard D. Ball, Alessandro Candido, Stefano Forte +4
We discuss the sensitivity of theoretical predictions of observables used in searches for new physics to parton distributions (PDFs) at large momentum fraction . Specifically, w…
Evidence for intrinsic charm quarks in the proton
Richard D. Ball, Alessandro Candido, Juan Cruz-Martinez +6
The theory of the strong force, quantum chromodynamics, describes the proton in terms of quarks and gluons. The proton is a state of two up quarks and one down quark bound by gluon…
Snowmass 2021 whitepaper: Proton structure at the precision frontier
S. Amoroso, A. Apyan, N. Armesto +54
An overwhelming number of theoretical predictions for hadron colliders require parton distribution functions (PDFs), which are an important ingredient of theory infrastructure for…
EKO: Evolution Kernel Operators
Alessandro Candido, Felix Hekhorn, Giacomo Magni
We present a new QCD evolution library for unpolarized parton distribution functions: EKO. The program solves DGLAP equations up to next-to-next-to-leading order. The unique featur…
Can parton distributions be negative?
Alessandro Candido, Stefano Forte, Felix Hekhorn
We review our recent paper, where we proved Parton distributions functions (PDFs) to be positive at NLO in the factorization scheme. We present some additional mate…
Can parton distributions be negative?
Alessandro Candido, Stefano Forte, Felix Hekhorn
It is common lore that Parton Distribution Functions (PDFs) in the factorization scheme can become negative beyond leading order due to the collinear subtrac…