The spin structure of the nucleon

CA Aidala, SD Bass, D Hasch, GK Mallot - Reviews of Modern Physics, 2013 - APS
This article reviews our present understanding of QCD spin physics: the proton spin puzzle
and new developments aimed at understanding the transverse structure of the nucleon …

Polarized positrons and electrons at the linear collider

G Moortgat-Pick, T Abe, G Alexander… - Physics Reports, 2008 - Elsevier
The proposed International Linear Collider (ILC) is well-suited for discovering physics
beyond the Standard Model and for precisely unraveling the structure of the underlying …

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 …

Precise determination of the spin structure function of the proton, deuteron, and neutron

A Airapetian, N Akopov, Z Akopov, A Andrus… - Physical Review D …, 2007 - APS
Precise measurements of the spin structure functions of the proton g 1 p (x, Q 2) and
deuteron g 1 d (x, Q 2) are presented over the kinematic range 0.0041≤ x≤ 0.9 and 0.18 …

Observation of the Naive--Odd Sivers Effect in Deep-Inelastic Scattering

A Airapetian, N Akopov, Z Akopov, EC Aschenauer… - Physical review …, 2009 - APS
Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were
measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd …

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 …

[HTML][HTML] Effects of transversity in deep-inelastic scattering by polarized protons

A Airapetian, N Akopov, Z Akopov, EC Aschenauer… - Physics Letters B, 2010 - Elsevier
Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-
inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen …

Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering<? format?> by the proton and the deuteron

A Airapetian, N Akopov, Z Akopov, EC Aschenauer… - Physical Review D …, 2013 - APS
Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state
of π±and K±mesons. The data were collected by the HERMES experiment at the HERA …

A fixed-target programme at the LHC: Physics case and projected performances for heavy-ion, hadron, spin and astroparticle studies

C Hadjidakis, D Kikoła, JP Lansberg, L Massacrier… - Physics Reports, 2021 - Elsevier
We review the context, the motivations and the expected performances of a comprehensive
and ambitious fixed-target programme using the multi-TeV proton and ion LHC beams. We …

[HTML][HTML] Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron

A Airapetian, N Akopov, Z Akopov, A Andrus… - Physics Letters B, 2008 - Elsevier
The momentum and helicity density distributions of the strange quark sea in the nucleon are
obtained in leading order from charged-kaon production in deep-inelastic scattering on the …