Results 11 to 20 of about 49,904 (199)

T-odd leading-twist quark TMDs at small x

open access: yesJournal of High Energy Physics, 2022
We study the small-x asymptotics of the flavor non-singlet T-odd leading-twist quark transverse momentum dependent parton distributions (TMDs), the Sivers and Boer-Mulders functions.
Yuri V. Kovchegov, M. Gabriel Santiago
doaj   +1 more source

Diffraction at HERA and the Confinement Problem [PDF]

open access: yes, 2000
We discuss HERA data on the high energy behavior of the total gamma*p cross section and on diffraction in deep inelastic scattering. We outline their novelty in comparison with diffraction in high energy hadron hadron scattering.
Bartels, J., Kowalski, H.
core   +2 more sources

Three Lectures on the Physics of Small x and High Gluon Density [PDF]

open access: yes, 1999
In these lectures, I shall discuss small x physics and the consequences of high gluon density which arises as x decreases. I argue that an understanding of this problem would lead to knowledge of the high energy asymptotics of hadronic processes.
McLerran, Larry
core   +2 more sources

Measuring Parton Densities in the Pomeron [PDF]

open access: yes, 1994
We present a program to measure the parton densities in the pomeron using diffractive deep inelastic scattering and diffractive photoproduction, and to test the resulting parton densities by applying them to other processes such as the diffractive ...
A. Berera   +54 more
core   +2 more sources

g_1 at low x and low Q^2 with Polarized ep Colliders [PDF]

open access: yes, 2000
Measurements of g_1 at low x and low Q^2 are expected to provide a sensitive probe of the transition from Regge to perturbative QCD dynamics, offering a new testing ground for models of small x physics. We discuss the potential of polarized ep colliders (
Bass, Steven D., De Roeck, Albert
core   +2 more sources

QCD and the Structure of the Nucleon in Electron Scattering [PDF]

open access: yes, 2000
The internal structure of the nucleon is discussed within the context of QCD. Recent progress in understanding the distribution of flavor and spin in the nucleon is reviewed, and prospects for extending our knowledge of nucleon structure in electron ...
Melnitchouk, W.
core   +3 more sources

A multi-channel U-Matrix model of hadron interaction at high energy

open access: yesJournal of High Energy Physics, 2023
The present phenomenological study investigates a multi-channel model of high-energy hadron interactions by considering a full parton configurations space and the U-matrix unitarisation scheme of the elastic amplitude, comparing it to the two-channel ...
Rami Oueslati
doaj   +1 more source

Energy Flow in the Hadronic Final State of Diffractive and Non-Diffractive Deep-Inelastic Scattering at HERA [PDF]

open access: yes, 1996
An investigation of the hadronic final state in diffractive and non--diffractive deep--inelastic electron--proton scattering at HERA is presented, where diffractive data are selected experimentally by demanding a large gap in pseudo --rapidity around the
Aid, S.   +426 more
core   +3 more sources

Shadowing in neutrino deep inelastic scattering and the determination of the strange quark distribution [PDF]

open access: yes, 1998
We discuss shadowing corrections to the structure function $F_2$ in neutrino deep-inelastic scattering on heavy nuclear targets. In particular, we examine the role played by shadowing in the comparison of the structure functions $F_2$ measured in ...
A. Brandt   +50 more
core   +2 more sources

Transverse momentum dependent shape function for J/ψ production in SIDIS

open access: yesJournal of High Energy Physics, 2023
It has been shown previously that the transverse momentum dependent (TMD) factorization of heavy quarkonium production requires a TMD shape function. Its perturbative tail can be extracted by matching the cross sections valid at low and high transverse ...
Daniël Boer   +4 more
doaj   +1 more source

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