193 citations · 469 across the 26 of their papers we have counts for
28 papers
CT25: the new generation of CTEQ-TEA PDFs
Alim Ablat, Daniel Adamiak, Aurore Courtoy +12
This contribution reviews CT25, a new generation of CTEQ--TEA parton distribution functions (PDFs) for precision QCD. With its first member sets released in 2025, the CT25 family a…
CT25: Progress toward next-generation PDFs for precision phenomenology at the LHC
A. Ablat, A. Courtoy, S. Dulat +10
We summarize recent progress toward the next generation of CTEQ-TEA parton distribution functions, CT25, based on a global NNLO analysis that incorporates a significant sample of n…
Fantômas: An analysis of parton distributions in a pion with Bézier parametrizations
Lucas Kotz, Aurore Courtoy, Pavel Nadolsky +2
We systematically explore the parametrization dependence of the Parton Distribution Functions (PDFs) to better quantify the true uncertainty from global QCD analyses. To achieve th…
Information Criteria for Selecting Parton Distribution Function Solutions
Aurore Courtoy, Arturo Ibsen
In data-driven determination of Parton Distribution Functions (PDFs) in global QCD analyses, uncovering the true underlying distributions is complicated by a highly convoluted inve…
Fantômas Unconfined: global QCD fits with Bézier parameterizations
Lucas Kotz, Aurore Courtoy, T. J. Hobbs +4
Fantômas is a C++ toolkit for exploring the parametrization dependence of parton distribution functions (PDFs) and other correlator functions in quantum chromodynamics (QCD). Fantô…
Fantômas: epistemic and nuclear uncertainties for the parton distributions of the pion
Lucas Kotz, Aurore Courtoy, Pavel Nadolsky +1
We present Fanto10, a new ensemble of NLO error parton distribution functions (PDFs) in a charged pion that provides the most detailed estimate of uncertainties from experimental,…
QCD factorization with multihadron fragmentation functions
T. C. Rogers, M. Radici, A. Courtoy +1
Important aspects of QCD factorization theorems are the properties of the objects involved that can be identified as universal. One example is that the definitions of parton densit…
The upcoming CTEQ-TEA parton distributions in a nutshell
A. Ablat, A. Courtoy, S. Dulat +8
We review recent studies by the CTEQ-TEA group toward the development of a new generation of precision parton distribution functions in the nucleon for advanced studies at the high…
Parametrization sampling and the pion PDF in a phenomenological analysis
Aurore Courtoy
In these proceedings, we extend the discussion of the pion PDF obtained by NLO QCD analysis in the Fantômas4QCD framework. Our pion analysis uses a state-of-the-art statistical met…
Fantômas4QCD: pion PDFs with epistemic uncertainties
Aurore Courtoy, Lucas Kotz, Pavel Nadolsky +2
In these proceedings, we reiterate and extend the discussion of the Next-to-Leading Order (NLO) QCD analysis of the charged pion Parton Distribution Function (PDF) obtained within…
New results in the CTEQ-TEA global analysis of parton distributions in the nucleon
A. Ablat, A. Courtoy, S. Dulat +11
This report summarizes the latest developments in the CTEQ-TEA global analysis of parton distribution functions (PDFs) in the nucleon. The focus is on recent NNLO fits to high-prec…
An analysis of parton distributions in a pion with Bézier parametrizations
Lucas Kotz, Aurore Courtoy, Pavel Nadolsky +2
We explore the role of parametrizations for nonperturbative QCD functions in global analyses, with a specific application to extending a phenomenological analysis of the parton dis…
Fantômas For QCD: parton distributions in a pion with Bézier parametrizations
Aurore Courtoy, Lucas Kotz, Pavel Nadolsky +3
We report on a new framework to parametrize parton distribution functions (PDFs) and other hadronic nonperturbative functions using polynomial functions realized by Bézier curves.…
Quantifying the interplay of experimental constraints in analyses of parton distributions
Xiaoxian Jing, Amanda Cooper-Sarkar, Aurore Courtoy +9
Parton distribution functions (PDFs) play a central role in calculations for the Large Hadron Collider (LHC). To gain a deeper understanding of the emergence and interplay of const…
Parton distributions need representative sampling
Aurore Courtoy, Joey Huston, Pavel Nadolsky +3
In global QCD fits of parton distribution functions (PDFs), a large part of the estimated uncertainty on the PDFs originates from the choices of parametric functional forms and fit…
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…
Large-x power laws of parton distributions remain inconclusive
Aurore Courtoy, Pavel M. Nadolsky
Focusing on hadron scattering at large partonic momentum fractions , we compare nonperturbative QCD predictions for the asymptotic behavior of DIS structure functions and parton…
Nucleon and pion PDFs: large-x asymptotics meets functional mimicry
Aurore Courtoy, Pavel M. Nadolsky
We review strategies to unveil the primordial large- structure of the nucleons as well as the pion from hard-scattering experiments. Ideas are presented for learning about the $…
Transversity through Dihadron: a constrained fit
A. Courtoy
We present a study of the valence transversity PDF obtained through a constrained fit. The effects of the constraints on the uncertainties of the PDF are explored. We show that the…
NNLO constraints on proton PDFs from the SeaQuest and STAR experiments and other developments in the CTEQ-TEA global analysis
Marco Guzzi, T. J. Hobbs, Tie-Jiun Hou +11
We review progress in the global QCD analysis by the CTEQ-TEA group since the publication of CT18 parton distribution functions (PDFs) in the proton. Specifically, we discuss compa…
Parton distributions and lattice QCD calculations: toward 3D structure
Martha Constantinou, Aurore Courtoy, Markus A. Ebert +24
The strong force which binds hadrons is described by the theory of Quantum Chromodynamics (QCD). Determining the character and manifestations of QCD is one of the most important an…
Two-current correlations in the pion in the Nambu and Jona-Lasinio model
A. ~Courtoy, Santiago Noguera, Sergio Scopetta
We present an analysis of two-current correlations for the pion in the Nambu--Jona-Lasinio model, with Pauli--Villars regularization. We provide explicit expressions in momentum sp…
Constrained fit of the valence transversity distributions from dihadron production
J. Benel, A. Courtoy, R. Ferro-Hernandez
We present a constrained analysis of the valence transversity Parton Distribution Functions from dihadron production in semi-inclusive DIS. While usual extractions of the transvers…
Pion nucleus Drell-Yan process and parton transverse momentum in the pion
A. Courtoy
During the INT-18-3 workshop, we presented an analysis of unpolarized Drell-Yan pair production in pion-nucleus scattering with a particular focus into the pion Transverse Momentum…