Wilson renormalization group for low<b><i>x</i></b>physics: Towards the high density regime

Jalilian‐Marian, Jamal; Kovner, Alex; Leonidov, A.; Weigert, Heribert

doi:10.1103/physrevd.59.014014

Cited by 906 publications

(582 citation statements)

References 16 publications

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“…In the opposite regime, where the projectile is dense, but the target is dilute the relevant evolution is given by JIMWLK Hamiltonian [39][40][41][42][43][44][45][46][47]. It is obtained from H KLW M IJ by the dense-dilute duality (DDD) transformation [50,51] …”

Section: Jhep04(2014)075mentioning

confidence: 99%

“…Nevertheless, the H RFT derived in [1] reduces to the two known limits -JIMWLK [39][40][41][42][43][44][45][46][47] and KLWMIJ [48] -in the approximation of a dilute target or dilute projectile respectively. We have argued that it adequately takes into account the Pomeron loops in the situation of scattering of two dilute objects at very high energy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reggeon field theory for large Pomeron loops

Altinoluk

Kovner

Levin

et al. 2014

J. High Energ. Phys.

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Abstract:We analyze the range of applicability of the high energy Reggeon Field Theory H RFT derived in [1]. We show that this theory is valid as long as at any intermediate value of rapidity η throughout the evolution at least one of the colliding objects is dilute. Importantly, at some values of η the dilute object could be the projectile, while at others it could be the target, so that H RFT does not reduce to either H JIM W LK or H KLW M IJ . When both objects are dense, corrections to the evolution not accounted for in [1] become important. The same limitation applies to other approaches to high energy evolution available today, such as for example [2,3] and [4][5][6]. We also show that, in its regime of applicability H RFT can be simplified. We derive the simpler version of H RFT and in the large N c limit rewrite it in terms of the Reggeon creation and annihilation operators. The resulting H RFT is explicitly self dual and provides the generalization of the Pomeron calculus developed in [4-6] by including higher Reggeons in the evolution. It is applicable for description of 'large' Pomeron loops, namely Reggeon graphs where all the splittings occur close in rapidity to one dilute object (projectile), while all the merging close to the other one (target). Additionally we derive, in the same regime expressions for single and double inclusive gluon production (where the gluons are not separated by a large rapidity interval) in terms of the Reggeon degrees of freedom.

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Section: Jhep04(2014)075mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reggeon field theory for large Pomeron loops

Altinoluk

Kovner

Levin

et al. 2014

J. High Energ. Phys.

Self Cite

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“…Non-linear small-x evolution resumming powers of α s Y ∼ α s ln s can be included into the correlators of the Wilson lines through the Balitsky-Kovchegov (BK) [49][50][51][52][53] and Jalilian-Marian-Iancu-McLerran-Weigert-Leonidov-Kovner (JIMWLK) [40][41][42][43][44][45][46][47][48] evolution equations. Thus expressing the interaction with the target in terms of the Wilson lines (16) allows for several different levels of approximation for this interaction.…”

Section: B Spin Asymmetry and C-parity In Quark Productionmentioning

confidence: 99%

A New Mechanism for Generating a Single Transverse Spin Asymmetry

Sievert

2013

Nuclear Physics A

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We propose a new mechanism for generating a single transverse spin asymmetry (STSA) in polarized proton-proton and proton-nucleus collisions in the high-energy scattering approximation. In this framework the STSA originates from the q → q G splitting in the projectile (proton) light-cone wave function followed by a perturbative (C-odd) odderon interaction, together with a C-even interaction, between the projectile and the target. We show that some aspects of the obtained expression for the STSA of the produced quarks are in qualitative agreement with experiment: STSA decreases with decreasing projectile xF and is a non-monotonic function of the transverse momentum kT . In our framework the STSA peaks at kT near the saturation scale Qs. Our mechanism predicts that the quark STSA in proton-nucleus collisions should be much smaller than in proton-proton collisions. We also observe that in our formalism the STSA for prompt photons is zero.

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“…At high virtualities Q 2 and moderately low x, such evolution is described by linear DGLAP [18][19][20] or BFKL [21][22][23] equations, suitable for a dilute parton regime. At x 10 −2 , and for Q values below an energy-dependent saturation momentum Q s , hadrons are however more appropriately described as dense, saturated parton systems in the context of the "Colour-Glass Condensate" (CGC) [24] effective theory with the corresponding non-linear JIMWLK [25][26][27] [13]. Bottom: Sequence of significant events in the early Universe until the Big Bang Nucleosynthesis epoch: electroweak and QCD transitions, decoupling of several SM and hypothetical particles, e ± annihilation, etc.…”

Section: Parton Structure and Evolution At Small-xmentioning

confidence: 99%

CMS Physics Technical Design Report: Addendum on High Density QCD with Heavy Ions

d’Enterria¹,

Ballintijn²,

Bedjidian³

et al. 2007

J. Phys. G: Nucl. Part. Phys.

150

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This report presents the capabilities of the CMS experiment to explore the rich heavy-ion physics programme offered by the CERN Large Hadron Collider (LHC). The collisions of lead nuclei at energies √ s N N = 5.5 TeV, will probe quark and gluon matter at unprecedented values of energy density. The prime goal of this research is to study the fundamental theory of the strong interaction -Quantum Chromodynamics (QCD) -in extreme conditions of temperature, density and parton momentum fraction (low-x).This report covers in detail the potential of CMS to carry out a series of representative Pb-Pb measurements. These include "bulk" observables, (charged hadron multiplicity, low p T inclusive hadron identified spectra and elliptic flow) which provide information on the collective properties of the system, as well as perturbative probes such as quarkonia, heavy-quarks, jets and high p T hadrons which yield "tomographic" information of the hottest and densest phases of the reaction.

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Wilson renormalization group for lowxphysics: Towards the high density regime

Cited by 906 publications

References 16 publications

Reggeon field theory for large Pomeron loops

Reggeon field theory for large Pomeron loops

A New Mechanism for Generating a Single Transverse Spin Asymmetry

CMS Physics Technical Design Report: Addendum on High Density QCD with Heavy Ions

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