193 citations · 293 across the 27 of their papers we have counts for
27 papers · 1 filter
A consistent NRQCD description of decays and high- prompt production of charmonia
Valerio Bertone, Jean-Philippe Lansberg, Kate Lynch +1
We present a global determination of the six long-distance matrix elements (LDMEs) within non-relativistic QCD (NRQCD) appearing in the production of prompt up to $\mathcal{O…
PineAPPLv1: fast and flexible theory predictions for present and future colliders
Tomáš Ježo, Emanuele R. Nocera, Tanjona R. Rabemananjara +3
We present PineAPPLv1, a library designed to provide accurate and flexible interpolation tables of partonic cross sections that can be convolved with parton distribution functions…
Hyperoptimisation algorithm for the next generation of PDF determinations: ensemble regression with an unbiased selection model
Juan M. Cruz-Martinez, Tommaso Giani, Tanjona R. Rabemananjara
We present a new automated procedure for selecting fitting methodologies in the determination of parton distribution functions (PDFs), based on a hyperoptimisation algorithm using…
Parton distribution functions and theory parameters: an NNPDF perspective
Richard D. Ball, Tommaso Giani, Felix Hekhorn +5
Parton Distribution Functions (PDFs) are a key ingredient in theoretical predictions for Large Hadron Collider (LHC) observables and play a central role in the extraction of precis…
Parametrisation scale invariance of Parton Distribution Function fits
Ivan A. Godino, Eva D. Z. Groenendijk, Tanjona R. Rabemananjara
In global PDF analyses, parton distribution functions (PDFs) are parametrised at a fixed input scale and evolved to higher scales using the DGLAP equations. Since QCD evoluti…
NeoPDF: A fast interpolation library for collinear and transverse momentum-dependent parton distributions
Tanjona R. Rabemananjara
We present NeoPDF, an interpolation library that supports both collinear and transverse momentum-dependent parton distribution functions. NeoPDF is designed to be fast and reliable…
NNPDFpol2.0: a global determination of polarised PDFs and their uncertainties at next-to-next-to-leading order
Juan Cruz-Martinez, Toon Hasenack, Felix Hekhorn +6
We present NNPDFpol2.0, a new set of collinear helicity parton distribution functions (PDFs) of the proton based on legacy measurements of structure functions in inclusive neutral-…
Parton distributions confront LHC Run II data: a quantitative appraisal
Amedeo Chiefa, Mark N. Costantini, Juan Cruz-Martinez +6
We present a systematic comparison of theoretical predictions and various high-precision experimental measurements, specifically of differential cross sections performed by the LHC…
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…
Hyperparameter Optimisation in Deep Learning from Ensemble Methods: Applications to Proton Structure
Juan Cruz-Martinez, Aaron Jansen, Gijs van Oord +4
Deep learning models are defined in terms of a large number of hyperparameters, such as network architectures and optimiser settings. These hyperparameters must be determined separ…
FPF@FCC: Neutrino, QCD, and BSM Physics Opportunities with Far-Forward Experiments at a 100 TeV Proton Collider
Roshan Mammen Abraham, Jyotismita Adhikary, Jonathan L. Feng +7
Proton-proton collisions at energy-frontier facilities produce an intense flux of high-energy light particles, including neutrinos, in the forward direction. At the LHC, these part…
LO, NLO, and NNLO Parton Distributions for LHC Event Generators
Juan Cruz-Martinez, Stefano Forte, Niccolo Laurenti +2
We present NNPDF4.0MC, a variant of the NNPDF4.0 set of parton distributions (PDFs) at LO, NLO and NNLO, with and without inclusion of the photon PDF, suitable for use with Monte C…
Heavy Quarks in Polarised Deep-Inelastic Scattering at the Electron-Ion Collider
Felix Hekhorn, Giacomo Magni, Emanuele R. Nocera +4
We extend the FONLL general-mass variable-flavour-number scheme to the case of longitudinally polarised DIS structure functions, accounting for perturbative corrections up to $\mat…
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 LHC as a Neutrino-Ion Collider
Juan M. Cruz-Martinez, Max Fieg, Tommaso Giani +4
Proton-proton collisions at the LHC generate a high-intensity collimated beam of neutrinos in the forward (beam) direction, characterised by energies of up to several TeV. The rece…
QCD effective charges from low-energy neutrino structure functions
Tanjona Rabemananjara
We present a new perspective on the study of the behavior of the strong coupling -- the fundamental coupling underlying the interactions between quarks and gluons as des…
Towards an integrated determination of proton, deuteron and nuclear PDFs
Tanjona Rabemananjara
We present progress towards a unified framework enabling the simultaneous determination of the parton distribution functions (PDFs) of the proton, deuteron, and nuclei up to lead $…
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…
Approximating missing higher-orders in transverse momentum distributions using resummations
Niccolò Laurenti, Tanjona R. Rabemananjara, Roy Stegeman
We present a more reliable approach to approximate the unknown next-to-next-to-next-to-leading order (N3LO) transverse momentum distribution of colourless final states, namely the…
The PDF4LHC21 combination of global PDF fits for the LHC Run III
Richard D. Ball, Jon Butterworth, Amanda M. Cooper-Sarkar +19
A precise knowledge of the quark and gluon structure of the proton, encoded by the parton distribution functions (PDFs), is of paramount importance for the interpretation of high-e…
NNNPDF3.0: Evidence for a modified partonic structure in heavy nuclei
Rabah Abdul Khalek, Rhorry Gauld, Tommaso Giani +3
We present an updated determination of nuclear parton distributions (nPDFs) from a global NLO QCD analysis of hard processes in fixed-target lepton-nucleus and proton-nucleus toget…