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Related papers: The hard to soft Pomeron transition in small x DIS…

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We show that it is possible to describe the effective Pomeron intercept using NLO BFKL evolution together with collinear improvements. In order to obtain a good description over the whole range of Q^2 we use a non-Abelian physical…

High Energy Physics - Phenomenology · Physics 2012-12-05 Clara Salas

We show that the next-to-leading-order renormalization-group-improved asymptotically-free BFKL Pomeron provides a good fit to HERA data on virtual photoproduction at small x and large Q^2. The leading discrete Pomeron pole reproduces…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Ellis , H. Kowalski , D. A. Ross

We discuss the small-x behaviour of the next-to-leading BFKL equation, depending on various smoothing out procedures of the running coupling constant at low momenta. While scaling violations (with resummed and calculable anomalous…

High Energy Physics - Phenomenology · Physics 2009-10-30 G. Camici , M. Ciafaloni

A method allowing for a direct comparison of data with theoretical predictions is proposed for forward jet production at HERA. It avoids the reconstruction of multi-parton contributions by expressing the experimental data directly as…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. G. Contreras , R. Peschanski , C. Royon

In this paper we developed approach based on the BFKL evolution in $\ln\Lb Q^2\Rb$. We show that the simplest diffusion approximation with running QCD coupling is able to describe the HERA experimental data on the deep inelastic structure…

High Energy Physics - Phenomenology · Physics 2015-06-16 Eugene Levin , Irina Potashnikova

We present a detailed description of the Q^2 and x dependence of the structure functions F2 and FL as extracted from the Deep Inelastic Scattering data at HERA in the small Bjorken x region. Making use of a collinearly-improved BFKL…

High Energy Physics - Phenomenology · Physics 2013-04-10 Martin Hentschinski , Agustin Sabio Vera , Clara Salas

We present a global fit to HERA data on the reduced cross section measured in electron-proton collisions in the region of small Bjorken-$x$: $x\le x_0=10^{-2}$ and moderate to high values of the virtuality $Q^2<Q^2_{max}=650$ GeV$^2$. The…

High Energy Physics - Phenomenology · Physics 2015-07-28 Javier L. Albacete

In the framework of semihard (k$_T$ factorization) QCD approach, we consider the differential cross sections of $D^{*\pm}$ meson production at HERA. The consideration is based on BFKL and CCFM gluon distributions. We find that in the case…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. P. Baranov , H. Jung , N. P. Zotov

We show that a resummation model for the evolution kernel at small x creates a bridge between the weak and strong couplings. The resummation model embodies DGLAP and BFKL anomalous dimensions at leading logarithmic orders, as well as a…

High Energy Physics - Phenomenology · Physics 2010-03-25 Anna M. Stasto

Within the framework of the dipole factorisation, we use a recent collinearly-improved version of the Balitsky-Kovchegov equation to fit the HERA data for inclusive deep inelastic scattering at small Bjorken $x$. The equation includes an…

High Energy Physics - Phenomenology · Physics 2020-02-19 B. Ducloué , E. Iancu , G. Soyez , D. N. Triantafyllopoulos

A brief review on the Dipole Pomeron model is given. The model not only describes data on hadron-hadron interactions, but also allows to describe data on the proton structure function with a $Q^2$ independent intercept. Moreover the chosen…

High Energy Physics - Phenomenology · Physics 2016-11-23 E. Martynov

A method allowing for a direct comparison of data with theoretical predictions is proposed for forward jet production at HERA and Mueller-Navelet jets at Tevatron and LHC. An application to the determination of the effective Pomeron…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Peschanski , C. Royon

We examine the process of Deep Inelastic Scattering (DIS) in the small-x limit, where Pomeron exchange dominates. Using the AdS/CFT correspondence, we study Pomeron exchange in the dual string theory in AdS space, which allows us to study…

High Energy Physics - Phenomenology · Physics 2012-04-03 Richard C. Brower , Marko Djurić , Ina Sarčević , Chung-I Tan

We present a global analysis of available data on inclusive structure functions measured in electron-proton scattering at small values of Bjorken-x, including the latest data from the combined HERA analysis on reduced cross sections. Our…

High Energy Physics - Phenomenology · Physics 2015-05-28 Paloma Quiroga-Arias , Javier L. Albacete , Nestor Armesto , Jose Guilherme Milhano , Carlos A. Salgado

We apply the tensor-pomeron model to small-$x$ deep-inelastic lepton-proton scattering and photoproduction. Our model includes a soft and a hard tensor pomeron as well as a reggeon contribution. Data with c.m. energies $6 < \sqrt{s} < 318$…

High Energy Physics - Phenomenology · Physics 2020-01-23 Daniel Britzger , Carlo Ewerz , Sasha Glazov , Otto Nachtmann , Stefan Schmitt

We present a preliminary report on the determination of the intercepts and couplings of the soft pomeron and of the rho/omega and f/a trajectories from the largest data set available for all total cross sections and real parts of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. R. Cudell , V. V. Ezhela , K. Kang , S. B. Lugovsky , N. P. Tkachenko

On the basis of a renormalization group analysis of the kernel and of the solutions of the BFKL equation with subleading corrections, we propose and calculate a novel expansion of a properly defined effective eigenvalue function. We argue…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. Ciafaloni , D. Colferai

We present a Monte Carlo based analysis of the combined world data on polarized lepton-nucleon deep-inelastic scattering at small Bjorken $x$ within the polarized quark dipole formalism. We show for the first time that double-spin…

High Energy Physics - Phenomenology · Physics 2021-08-11 Daniel Adamiak , Yuri V. Kovchegov , W. Melnitchouk , Daniel Pitonyak , Nobuo Sato , Matthew D. Sievert

We pose the question: how far can we push the QCD dipole model and the idea of QCD saturation to the kinematical regions traditionally associated with soft nonperturbative physics? The answer is that it works sufficiently well allowing a…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Lublinsky

We present a BFKL phenomenology of structure functions in the framework of the generalized BFKL equation for the dipole cross section proposed by us recently. We show that the HERA measurements of excitation of charm at $Q^{2} \lsim $10…

High Energy Physics - Phenomenology · Physics 2016-08-14 N. N. Nikolaev , B. G. Zakharov
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