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We present a method to include colour-suppressed effects in the Mueller dipole picture. The model consistently includes saturation effects both in the evolution of dipoles and in the interactions of dipoles with a target in a…

高能物理 - 唯象学 · 物理学 2010-10-27 Emil Avsar , Gosta Gustafson , Leif Lonnblad

Using the dipole framework for QCD at small x in the 1/N_c limit, we derive the expression of the 1 -> p dipole multiplicity density in momentum space. This gives an analytical expression for the 1 -> p QCD Pomeron amplitudes in terms of…

高能物理 - 唯象学 · 物理学 2008-11-26 R. A. Janik , R. Peschanski

We explore possible extensions of the $t$-channel and $s$-channel unitary model of high energy evolution in zero transverse dimensions appropriate to very high energy/atomic number where the dipole density in a toy hadron is parametrically…

高能物理 - 唯象学 · 物理学 2022-05-18 A. Kovner , E. Levin , M. Lublinsky

We have studied the color dipole picture for the description of the deep inelastic process, mainly the structure functions which are driven directly by the gluon distribution. Estimates for those functions are obtained using the effective…

高能物理 - 唯象学 · 物理学 2009-11-07 M. B. Gay Ducati , M. V. T. Machado

We propose a stochastic particle model in (1+1)-dimensions, with one dimension corresponding to rapidity and the other one to the transverse size of a dipole in QCD, which mimics high-energy evolution and scattering in QCD in the presence…

高能物理 - 唯象学 · 物理学 2008-11-26 E. Iancu , J. T. de Santana Amaral , G. Soyez , D. N. Triantafyllopoulos

We have in earlier papers presented an extension of Mueller's dipole cascade model, which includes subleading effects from energy conservation and running coupling as well as colour suppressed effects from pomeron loops via a ``dipole…

高能物理 - 唯象学 · 物理学 2011-03-23 Emil Avsar , Gosta Gustafson , Leif Lonnblad

The small-$x_B$ deep inelastic scattering in the saturation region is governed by the non-linear evolution of Wilson-line operators. In the leading logarithmic approximation it is given by the BK equation for the evolution of color dipoles.…

高能物理 - 唯象学 · 物理学 2014-11-18 Giovanni A. Chirilli

We study some structural aspects of the evolution equations with Pomeron loops recently derived in QCD at high energy and for a large number of colors, with the purpose of clarifying their probabilistic interpretation. We show that, in…

高能物理 - 唯象学 · 物理学 2009-11-11 E. Iancu , G. Soyez , D. N. Triantafyllopoulos

We show the role played by QCD evolution and skewedness effects in the DVCS cross section at large $Q^2$ within the color dipole description of the process at photon level. The dipole cross section is given by the saturation model, which…

高能物理 - 唯象学 · 物理学 2014-11-17 L. Favart , M. V. T. Machado

This paper is concerned with the dynamics and interactions of Q-balls in (1+1)-dimensions. The asymptotic force between well-separated Q-balls is calculated to show that Q-balls can be attractive or repulsive depending upon their relative…

高能物理 - 理论 · 物理学 2009-02-09 Peter Bowcock , David Foster , Paul Sutcliffe

DIS data from HERA show a striking regularity as \sigma^{\gamma^* p} is a function of the ratio \tau=Q^2/Q_s^2(x) only. The scaling function shows a break at \tau ~ 1, which has been taken as an indication for saturation. However, besides…

高能物理 - 唯象学 · 物理学 2014-11-18 Emil Avsar , Gosta Gustafson

Deep inelastic scattering at small x can be described very effectively using saturation inspired dipole models. We investigate whether such models are compatible with the numerical solutions of the Balitsky-Kovchegov (BK) equation which is…

高能物理 - 唯象学 · 物理学 2007-06-13 Daniel Boer , Andre Utermann , Erik Wessels

We discuss the description of the proton structure function within the dipole factorisation framework. We parametrise the forward dipole amplitude to account for saturation as predicted by the small-x QCD evolution equations. Contrarily to…

高能物理 - 唯象学 · 物理学 2008-07-02 Gregory Soyez

A review of some theoretical aspects of small x QCD physics is given, with a particular emphasis to the relation between the BFKL and the colour dipole approaches. The nonlinear evolution equations one may construct, as a better…

高能物理 - 唯象学 · 物理学 2007-05-23 G. P. Vacca

In this paper we study the description of saturation in Balitsky, Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov and Kovner (B-JIMWLK) picture when restricted to observables made up only from dipole operators. We derive a functional…

高能物理 - 唯象学 · 物理学 2009-11-10 Romuald A. Janik

Transverse momentum integrated multiplicities in the central region of pp collisions at LHC energies satisfy Koba-Nielsen-Olesen scaling. We attempt to relate this finding to multiplicity distributions of soft gluons. KNO scaling emerges if…

高能物理 - 唯象学 · 物理学 2012-09-20 Adrian Dumitru , Elena Petreska

The small-$x$ deep inelastic scattering in the saturation region is governed by the non-linear evolution of Wilson-line operators. In the leading logarithmic approximation it is given by the BK equation for the evolution of color dipoles.…

高能物理 - 唯象学 · 物理学 2008-11-26 Ian Balitsky , Giovanni A. Chirilli

Using Laplace transform techniques, we describe the evolution of the color dipole cross section, at the leading-order and next-to-leading order approximations, from the Bartels-Golec-Biernat-Kowalski model in a kinematical region of low…

高能物理 - 唯象学 · 物理学 2024-10-01 G. R. Boroun

This talk discusses recent progress in some topics relevant for deep inelastic scattering at small x. We discuss first differences and similarities between conventional collinear factorization and the dipole picture of deep inelastic…

高能物理 - 唯象学 · 物理学 2016-01-19 T. Lappi

Being reformulated in the color dipole basis of small-x QCD Adler's theorem establishes a connection between perturbative and non-perturbative descriptions of DIS and quantifies the effect of non-perturbative dynamics on…

高能物理 - 唯象学 · 物理学 2008-11-26 R. Fiore , V. R. Zoller
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