1.5k citations · 6.4k across the 117 of their papers we have counts for
68 papers · 1 filter
QED-enhanced PDF implications for the Higgs sector
Amanda M. Cooper-Sarkar, Thomas Cridge, T. J. Hobbs +4
In this work, we examine the implications of electroweak corrections beyond leading order for processes of special interest in the Higgs sector. We especially explore the role of t…
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…
Precision QCD, Hadronic Structure & Forward QCD, Heavy Ions: Report of Energy Frontier Topical Groups 5, 6, 7 submitted to Snowmass 2021
M. Begel, S. Hoeche, M. Schmitt +47
This report was prepared on behalf of three Energy Frontier Topical Groups of the Snowmass 2021 Community Planning Exercise. It summarizes the status and implications of studies of…
xFitter: An Open Source QCD Analysis Framework. A resource and reference document for the Snowmass study
The xFitter Developers' Team, :, H. Abdolmaleki +21
We provide an overview of the xFitter open-source software package, review the general capabilities of the program, and highlight applications relevant to the Snowmass study. An up…
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…
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…
The strong coupling constant: State of the art and the decade ahead
D. d'Enterria, S. Kluth, G. Zanderighi +55
Theoretical predictions for particle production cross sections and decays at colliders rely heavily on perturbative Quantum Chromodynamics (QCD) calculations, expressed as an expan…
Simultaneous extraction of and from LHC differential distributions
Amanda M. Cooper-Sarkar, Michal Czakon, Matthew A. Lim +2
We present a joint extraction of the strong coupling and the top-quark pole mass from measurements of top-quark pair production performed by the ATLAS and CMS experimen…
Parton Distribution Functions of the Charged Pion Within The xFitter Framework
Ivan Novikov, Hamed Abdolmaleki, Daniel Britzger +9
We present the first open-source analysis of parton distribution functions (PDFs) of charged pions using xFitter, an open-source QCD fit framework to facilitate PDF extraction and…
Improved constraints on parton distributions using LHCb, ALICE and HERA heavy-flavour measurements and implications for the predictions for prompt atmospheric-neutrino fluxes
O. Zenaiev, M. V. Garzelli, K. Lipka +5
The impact of measurements of heavy-flavour production in deep inelastic scattering and in collisions on parton distribution functions is studied in a QCD analysis at nex…
Recent QCD results from the xFitter project: Probing the strange content of the proton with charm production in charged current at LHeC
xFitter Developers Team, Hamed Abdolmaleki, Valerio Bertone +11
We investigate charm production in charged-current deep-inelastic scattering (DIS) using the xFitter program. xFitter is an open-source software framework for the determination of…
Probing the strange content of the proton with charm production in charged current at LHeC
xFitter Developers' team, :, Hamed Abdolmaleki +12
We study charm production in charged-current deep-inelastic scattering (DIS) using the xFitter framework. Recent results from the LHC have focused renewed attention on the determin…
xFitter 2.0.0: Heavy quark matching scales: Unifying the FFNS and VFNS
The xFitter Developers' Team, :, V. Bertone +15
xFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton for many different kinds of analyses in…
Impact of low- resummation on QCD analysis of HERA data
xFitter Developers' team, :, Hamed Abdolmaleki +14
Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low and low . A reso…
Parton distributions and lattice QCD calculations: a community white paper
Huey-Wen Lin, Emanuele R. Nocera, Fred Olness +29
In the framework of quantum chromodynamics (QCD), parton distribution functions (PDFs) quantify how the momentum and spin of a hadron are divided among its quark and gluon constitu…
xFitter 2.0.0: An Open Source QCD Fit Framework
V. Bertone, M. Botje, D. Britzger +10
xFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton for many different kinds of analyses in…
The photon PDF determination within the xFitter framework
Francesco Giuli
The xFitter project (former HERAFitter project) is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton…
Impact of the heavy quark matching scales in PDF fits
The xFitter Developers Team, V. Bertone, D. Britzger +14
We investigate the impact of displaced heavy quark matching scales in a global fit. The heavy quark matching scale determines at which energy scale the QCD theory trans…
Running of the Charm-Quark Mass from HERA Deep-Inelastic Scattering Data
A. Gizhko, A. Geiser, S. Moch +47
Combined HERA data on charm production in deep-inelastic scattering have previously been used to determine the charm-quark running mass in the MSbar renormalisation sche…
The photon PDF from high-mass Drell Yan data at the LHC using xFitter
Francesco Giuli
In this contribution, we review the results of the recent paper "The photon PDF from high-mass Drell Yan data at the LHC" (arXiv:1701.08553), where a determination of the photon PD…
The photon PDF from high-mass Drell Yan data at the LHC
F. Giuli, xFitter Developers' team, : +15
Achieving the highest precision for theoretical predictions at the LHC requires the calculation of hard-scattering cross-sections that include perturbative QCD corrections up to (N…
Prompt neutrino fluxes in the atmosphere with PROSA parton distribution functions
PROSA Collaboration, M. V. Garzelli, S. Moch +6
Effects on atmospheric prompt neutrino fluxes of present uncertainties affecting the nucleon composition are studied by using the PROSA fit to parton distribution functions (PDFs).…
Study of HERA data at Low Q^2 and Low x
A. M Cooper-Sarkar, I. Abt, B. Foster +3
In the HERAPDF2.0 PDF analysis it was noted that the fit worsens significantly at low for both NLO and NNLO fits. The turn over of the reduced cross section at low-…
A determination of mc(mc) from HERA data using a matched heavy-flavor scheme
xFitter Developers' team, :, Valerio Bertone +12
The charm quark mass is one of the fundamental parameters of the Standard Model Lagrangian. In this work we present a determination of the MSbar charm mass from a fit to the inclus…