Single inclusive hadron production at RHIC and the LHC from the color glass condensate

Albacete, Javier L.; Marquet, Cyrille

doi:10.1016/j.physletb.2010.02.073

Cited by 189 publications

(296 citation statements)

References 58 publications

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“…The main purpose of this paper is to explore to what extent this disagreement stems from the framework itself, and how much is due to approximations concerning nuclear geometry that are necessary for relating the CGC description of the proton to that of the nucleus. Indeed, in the case of single inclusive light hadron production [8], the disagreement with early CGC nuclear suppression calculations [26] and LHC data turned out to be mostly due to the nuclear geometry effects. We will in this paper calculate cross sections for inclusive (prompt) forward J/ψ production in proton-proton and proton-nucleus collisions using the collinear "hybrid" framework also used in Ref.…”

Section: Introductionmentioning

confidence: 96%

ForwardJ/ψproduction in proton-nucleus collisions at high energy

2015

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Inclusive production of J/ψ mesons, especially at forward rapidities, is an important probe of small-x gluons in protons and nuclei. In this paper we re-evaluate the production cross sections in the Color Glass Condensate framework, where the process is described by a large x gluon from the probe splitting into a quark pair and eikonally interacting with the target proton or nucleus. Using a standard collinear gluon distribution for the probe and an up to date dipole cross section fitted to HERA data to describe the target we achieve a rather good description of the cross section in proton-proton collisions, although with a rather large normalization uncertainty. More importantly, we show that generalizing the dipole cross section to nuclei in the Glauber approach results in a nuclear suppression of J/ψ production that is much closer to the experimental data than claimed in previous literature.

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Section: Introductionmentioning

confidence: 96%

ForwardJ/ψproduction in proton-nucleus collisions at high energy

2015

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“…This normalization uncertainty cancels out in R pA , the ratio of proton-nucleus and proton-proton cross sections, corrected by the nuclear geometry. Since other uncertainties in R pA are rather small, it is important to treat the nuclear geometry correctly also in the theory calculations, indeed the largest difference between earlier [15] and more recent [14] calculations is precisely here. In a similar way the importance of treating carefully the nuclear geometry has been seen in calculations of J/Ψ production at forward rapidity [18,19].…”

Section: Control Measurementsmentioning

confidence: 95%

“…Here the particle production cross section is proportional to the nuclear unintegrated gluon distribution, which is given simply by a Fourier-transform of the dipole cross section. Leading order calculations with up-to-date dipole cross sections now give a relatively good description of the spectra, albeit with the normalization corrected by a "K-factor" [14][15][16][17]. This normalization uncertainty cancels out in R pA , the ratio of proton-nucleus and proton-proton cross sections, corrected by the nuclear geometry.…”

Section: Control Measurementsmentioning

confidence: 98%

Initial conditions in AA and pA collisions

Lappi

2017

EPJ Web Conf.

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Abstract. A full understanding of the spacetime evolution of the QCD matter created in a heavy ion collision requires understanding the properties of the initial stages. In the weak coupling picture these are dominated by classical gluon fields, whose properties can also be studied via the scattering of dilute probes off a high energy hadron or nucleus. A particular challenge is understanding small systems, where LHC data is also showing signs of collective behavior. We discuss some recent results of on the initial matter production and thermalization in heavy ion collisions, in particular in the gluon saturation framework.

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“…The LO contribution together with some running coupling effects has been studied quite extensively [20][21][22][23][24].…”

Section: Inclusive Forward Hadron Productions In Pa Collisionsmentioning

confidence: 99%

The search for gluon saturation in pA collisions

Xiao

2014

Nuclear Physics A

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In this talk, I reviewed the recent theoretical progress towards the exploration of the gluon saturation phenomenon in pA collisions at both RHIC and the LHC. Two important pillars of this exploration are the single inclusive forward hadron productions and forward dihadron correlations, which have both been computed up to one-loop order within the small-x factorization formalism. Furthermore, detailed numerical study for the single inclusive hadron production at next-to-leading order provides us good description of the low transverse momentum data measured in dAu collisions at RHIC with significantly reduced uncertainty. In addition, the one-loop calculation for dihadron productions in pA collisions shows that there is a new type of large logarithm, which is known as the Sudakov factor, arising in the back-to-back correlation limit.

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Single inclusive hadron production at RHIC and the LHC from the color glass condensate

Cited by 189 publications

References 58 publications

ForwardJ/ψproduction in proton-nucleus collisions at high energy

ForwardJ/ψproduction in proton-nucleus collisions at high energy

Initial conditions in AA and pA collisions

The search for gluon saturation in pA collisions

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