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Related papers: Small-x Structure Functions and QCD Pomeron

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Starting from a rewiev of DGLAP and BFKL evolution equations for small-x processes, a sistematic study is performed in order to understand the limits of both the formulations and to improve them in a unique framework, which aims to cover…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Colferai

The capabilities of the CMS experiment to study the low-x parton structure and QCD evolution in the proton and the nucleus at LHC energies are presented through four different measurements, to be carried out in Pb-Pb at sqrt(s_NN) = 5.5…

High Energy Physics - Experiment · Physics 2008-11-26 David d'Enterria

The analysis on nucleon structure functions at small Bjorken $x$ in the framework of holographic QCD is presented. In the model setup, the complicated nonperturbative interaction between the virtual photon and the target nucleon is…

High Energy Physics - Phenomenology · Physics 2016-06-22 Akira Watanabe , Katsuhiko Suzuki

We present our analysis on the photon structure functions at small Bjorken variable x in the framework of the holographic QCD. In the kinematic region, a photon can fluctuate into vector mesons and behaves like a hadron rather than a…

High Energy Physics - Phenomenology · Physics 2016-12-21 Akira Watanabe , Hsiang-nan Li

I present a short review of recent studies of quarkonium production in proton-proton and proton-nucleus collisions at collider energies in Small-$x$ formalism.

High Energy Physics - Phenomenology · Physics 2017-04-28 Kazuhiro Watanabe

Small-x DIS is described as the scattering of a partonic fluctuation of the photon off a superposition of target color fields. Diffraction occurs if the emerging partonic state is in a color singlet. Introducing a specific model for the…

High Energy Physics - Phenomenology · Physics 2010-03-25 W. Buchmuller , T. Gehrmann , A. Hebecker

In the framework of conventional Regge theory we present a common description of total photon-proton cross-section and proton structure functions in the region $0 \leq Q^2 \leq 5 \ {\rm GeV}^2$. Using it as an initial condition in the…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. Capella , A. Kaidalov , C. Merino , J. Tran Thanh Van

We consider scattering amplitudes in string models in the Regge limit of high energies and fixed momentum transfers with the use of the unitarity in direct channels. Intermediate states are taken in the multi-Regge kinematics corresponding…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. S. Danilov , L. N. Lipatov

Production of leading neutrons in DIS is usually considered as a tool to measure the pion structure function at small x accessible at HERA. The main obstacle is the lack of reliable evaluations of the absorption corrections, which…

High Energy Physics - Phenomenology · Physics 2013-05-30 B. Z. Kopeliovich , I. K. Potashnikova , B. Povh , Ivan Schmidt

We investigate the photon structure functions at small Bjorken variable $x$ in the framework of the holographic QCD, assuming dominance of the Pomeron exchange. The quasi-real photon structure functions are expressed as convolution of the…

High Energy Physics - Phenomenology · Physics 2015-11-04 Akira Watanabe , Hsiang-nan Li

We present some physics topics that can be studied at the LHC using proton tagging. We distinguish the QCD (Pomeron structure, BFKL analysis...) from the exploratory physics topics (HIggs boson, anomalous couplings between photons and $W/Z$…

High Energy Physics - Phenomenology · Physics 2013-05-16 C. Royon

We give a brief overview of the perturbative QCD description of the proton deep-inelastic structure function F2(x, Q2) at small x. We discuss GLAP and BFKL approaches, and then we review progress towards a more unified treatment.

High Energy Physics - Phenomenology · Physics 2008-02-03 A. D. Martin

Recent results by the authors on proton diffractive dissociation (single, double and central) in the low-mass resonance region with emphasis on the LHC kinematics are reviewed and updated. Based on the previous ideas that the contribution…

High Energy Physics - Phenomenology · Physics 2023-03-02 László Jenkovszky , Rainer Schicker , István Szanyi

Deep-inelastic scattering at small x is a new field of QCD phenomenology which HERA experiments started to explore. The data show the feature expected by the perturbative Regge asymptotics. We describe the parton picture of structure…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Kirschner

We summarize our recent results on small x resummation in full QCD with n_f quark flavours and discuss their phenomenological impact in the extraction of parton distributions from present day structure function data and their extrapolation…

High Energy Physics - Phenomenology · Physics 2009-04-14 Guido Altarelli , Richard D Ball , Stefano Forte

We discuss some recent developments in small x physics.

High Energy Physics - Phenomenology · Physics 2010-03-25 Raju Venugopalan

The Pomeron dynamics is investigated via deep inelastic scattering (DIS) at small x in the framework of holographic quantum chromodynamics. The small x DIS process is assumed to be described by the graviton exchange between external vector…

High Energy Physics - Phenomenology · Physics 2015-06-11 Akira Watanabe , Katsuhiko Suzuki

We summarize the state of the art of resummation techniques in the small-$x$ limit of perturbative QCD.

High Energy Physics - Phenomenology · Physics 2009-10-30 Vittorio Del Duca

We present a comprehensive review of the theoretical and experimental progress in the investigation of novel high-temperature quantum chromodynamics phenomena in small systems at both the Relativistic Heavy Ion Collider and the Large Hadron…

Nuclear Theory · Physics 2024-06-13 Jorge Noronha , Björn Schenke , Chun Shen , Wenbin Zhao

We explain why it is possible to formulate a wide variety of high energy (small-x) photon-proton processes in terms of a universal dipole cross section and compare and contrast various parameterizations of this function that exist in the…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. R. Kerley , M. McDermott