Results 81 to 90 of about 22,127 (212)

Introduction to the Transverse‐Momentum‐Weighted Technique in the Twist‐3 Collinear Factorization Approach

open access: yesAdvances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019
The twist‐3 collinear factorization framework has drawn much attention in recent decades as a successful approach in describing the data for single spin asymmetries (SSAs). Many SSAs data have been experimentally accumulated in a variety of energies since the first measurement was done in the late 1970s and it is expected that the future experiments ...
Hongxi Xing   +2 more
wiley   +1 more source

Proceedings 33rd On‐line Symposium ESVN‐ECVN

open access: yes, 2022
Journal of Veterinary Internal Medicine, Volume 36, Issue 1, Page 300-352, January/February 2022.
wiley   +1 more source

π − N Drell‐Yan Process in TMD Factorization

open access: yesAdvances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019
This article presents the review of the current understanding on the pion‐nucleon Drell‐Yan process from the point of view of the TMD factorization. Using the evolution formalism for the unpolarized and polarized TMD distributions developed recently, we provide the theoretical expression of the relevant physical observables, namely, the unpolarized ...
Xiaoyu Wang, Zhun Lu, Zhongbo Kang
wiley   +1 more source

Semi-inclusive back-to-back production of a hadron pair and a single hadron in e + e − annihilation

open access: yesJournal of High Energy Physics, 2018
Inclusive hadron production in e + e − annihilation has long been used to study both single hadron fragmentation functions (FF) and dihadron fragmentation functions (DiFF).
Hrayr H. Matevosyan   +2 more
doaj   +1 more source

Determining the helicity structure of the nucleon at the Electron Ion Collider in China

open access: yesJournal of High Energy Physics, 2021
Understanding how sea quarks behave inside a nucleon is one of the most important physics goals of the proposed Electron-Ion Collider in China (EicC), which is designed to have a 3.5 GeV polarized electron beam (80% polarization) colliding with a 20 GeV ...
Daniele Paolo Anderle   +5 more
doaj   +1 more source

Towards small x resummed DIS phenomenology [PDF]

open access: yes, 2009
We report on recent progress towards quantitative phenomenology of small x resummation of deep-inelastic structure functions. We compute small x resummed K-factors with realistic PDFs and estimate their impact in the HERA kinematical region.
Altarelli, Guido   +3 more
core   +1 more source

DIS2015 Heavy Flavours Working Group Summary

open access: yes, 2015
Studies presented in the heavy flavours working group are summarized. Very recent results of measurements at the HERA, LHC, Tevatron, STAR, PHENIX, and BaBar experiments are reviewed and new developments in theory and phenomenology are discussed.
Geiser, Achim   +2 more
core   +1 more source

Proton spin structure and the axial U(1) problem [PDF]

open access: yes, 2001
We emphasise the relation between the spin structure of the proton and the axial U(1) problem. New experiments motivated by the proton spin problem which could shed light on the nature of U(1) symmetry breaking in QCD are discussed.Comment: Invited talk ...
Adler   +32 more
core   +2 more sources

Heavy-flavor parton distributions without heavy-flavor matching prescriptions

open access: yesJournal of High Energy Physics, 2018
We show that the well-known obstacle for working with the zero-mass variable flavor number scheme, namely, the omission of O1 $$ \mathcal{O}(1) $$ mass power corrections close to the conventional heavy flavor matching point (HFMP) μ b = m, can be easily ...
Valerio Bertone   +4 more
doaj   +1 more source

Matching of fracture functions for SIDIS in target fragmentation region

open access: yesJournal of High Energy Physics, 2021
In the target fragmentation region of Semi-Inclusive Deep Inelastic Scattering, the diffractively produced hadron has small transverse momentum. If it is at order of ΛQCD, it prevents to make predictions with the standard collinear factorization. However,
K.B. Chen, J.P. Ma, X.B. Tong
doaj   +1 more source

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