Insights into the emergence of mass from studies of pion and kaon structure

CD Roberts, DG Richards, T Horn, L Chang - Progress in Particle and …, 2021 - Elsevier
There are two mass generating mechanisms in the standard model of particle physics (SM).
One is related to the Higgs boson and fairly well understood. The other is embedded in …

Emergence of hadron mass and structure

M Ding, CD Roberts, SM Schmidt - Particles, 2023 - mdpi.com
Visible matter is characterised by a single mass scale; namely, the proton mass. The
proton's existence and structure are supposed to be described by quantum chromodynamics …

The PDF4LHC21 combination of global PDF fits for the LHC Run III

RD Ball, J Butterworth, AM Cooper-Sarkar… - Journal of Physics G …, 2022 - iopscience.iop.org
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 …

Snowmass 2021 whitepaper: Proton structure at the precision frontier

S Amoroso, A Apyan, N Armesto, RD Ball… - arXiv preprint arXiv …, 2022 - arxiv.org
An overwhelming number of theoretical predictions for hadron colliders require parton
distribution functions (PDFs), which are an important ingredient of theory infrastructure for …

Global QCD analysis of pion parton distributions with threshold resummation

PC Barry, CR Ji, N Sato, W Melnitchouk… - Physical Review Letters, 2021 - APS
We perform the first global QCD analysis of pion valence, sea quark, and gluon distributions
within a Bayesian Monte Carlo framework with threshold resummation on Drell-Yan cross …

Concerning pion parton distributions

ZF Cui, M Ding, JM Morgado, K Raya, D Binosi… - The European Physical …, 2022 - Springer
Analyses of the pion valence-quark distribution function (DF),, which explicitly incorporate
the behaviour of the pion wave function prescribed by quantum chromodynamics (QCD) …

[HTML][HTML] Proton and pion distribution functions in counterpoint

Y Lu, L Chang, K Raya, CD Roberts… - Physics Letters B, 2022 - Elsevier
Working with proton and pion valence distribution functions (DFs) determined consistently at
the same, unique hadron scale and exploiting the possibility that there is an effective charge …

The case for an EIC Theory Alliance: Theoretical Challenges of the EIC

R Abir, I Akushevich, T Altinoluk, DP Anderle… - arXiv preprint arXiv …, 2023 - arxiv.org
We outline the physics opportunities provided by the Electron Ion Collider (EIC). These
include the study of the parton structure of the nucleon and nuclei, the onset of gluon …

Parton distributions need representative sampling

A Courtoy, J Huston, P Nadolsky, K Xie, M Yan… - Physical Review D, 2023 - APS
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 fitting …

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, HW Lin… - arXiv preprint arXiv …, 2022 - arxiv.org
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 …